Wall Mounted Multi-Split System Air Conditioning/Heat Pump

Wall MountedMulti-Split System

Air Conditioning/Heat Pump

Indoor Unit: B-MMC09FA-1B-MMH09FA-1B-MMC12FA-1B-MMH12FA-1

Outdoor Unit : A-MMH18FA-1A-MMC24FA-1A-MMH24FA-1A-MMC36FA-1A-MMH36FA-1

Before servicing the unit, read the“safety precautions” in this manual.

Only for authorized service personnel.

HEAT CONTROLLER, INC.

2 Multi type Air Conditioner

Multi type Air Conditioner Service Manual

TABLE OF CONTENTSCombination table.......................................................................................................................................3Safety Precautions......................................................................................................................................4Installation guide at the seaside..............................................................................................................10Dimensions................................................................................................................................................11

Indoor Unit..............................................................................................................................................11Outdoor Unit ...........................................................................................................................................12

Product Specifications .............................................................................................................................15Indoor Unit..............................................................................................................................................15Outdoor Unit ...........................................................................................................................................16

Installation .................................................................................................................................................19Installation Parts.....................................................................................................................................19Installation Tools.....................................................................................................................................19Select the best location .........................................................................................................................20Piping length and elevation ....................................................................................................................21Fixing Installation Plate(Standard Type).................................................................................................22Drill a hole in the wall ...........................................................................................................................22

Flaring Work and Connection of Piping..................................................................................................23Flaring work............................................................................................................................................24Connecting the Piping ............................................................................................................................24

Connecting the Cable between Indoor Unit and Outdoor Unit .............................................................31Connect the cable to the Indoor unit. .....................................................................................................31Connect the cable to the Outdoor unit....................................................................................................32Connection method of the connecting cable(Example) ..........................................................................33Connect the cable to the indoor unit.......................................................................................................34

Checking the Drainage, Forming the Pipings and Long Pipe Setting .................................................35Checking the drainage............................................................................................................................35Forming the piping..................................................................................................................................36

Air Purging and Evacuation .....................................................................................................................37Checking method ...................................................................................................................................37Evacuation..............................................................................................................................................38

Charging ....................................................................................................................................................39Test Running .............................................................................................................................................40Operation ...................................................................................................................................................41

Function of control..................................................................................................................................41Function of Indoor Unit ...........................................................................................................................46Function of Outdoor Unit ........................................................................................................................47Remote Control Operation .....................................................................................................................48

Disassembly ..............................................................................................................................................49Indoor Unit..............................................................................................................................................49

Schematic Diagram...................................................................................................................................52Electronic Control Device .......................................................................................................................52Wiring Diagram.......................................................................................................................................55Components Locations...........................................................................................................................57

Troubleshooting Guide .............................................................................................................................61Refrigeration Cycle Diagram ..................................................................................................................61Self-diagnosis Function ..........................................................................................................................64Cycle Troubleshooting Guide..................................................................................................................65Electronic Parts Troubleshooting Guide .................................................................................................66Error Code..............................................................................................................................................71

2-way, 3-way Valve ....................................................................................................................................75Exploded View & Replacement Parts List ..............................................................................................79

Indoor Unit .............................................................................................................................................79Outdoor Unit ...........................................................................................................................................81

Service Manual 3

Notes :1.Cooling Capacity is based on : indoor temp. 26.7°C(80.1°F)DB, 19.4°C(66.9°F)WB; outdoor temp. 35°C(95°F)DB, 23.9°C(75°F)WB

2.Heating Capacity is based on : indoor temp. 21.1°C(70°F)DB, 15.6°C(60.1°F)WB; outdoor temp. 8.3°C(46.9°F)DB, 6.1°C(43°F)WB

This symbol alerts you to the risk of electric shock.

This symbol alerts you to hazards that could cause harm to theair conditioner.

This symbol indicates special notes.NOTICE

Symbols Used in this Manual

Combination table

Combination table

18 kBtu( 2 rooms)

Combination

Unit-A Unit-B Total

1 UNIT 9 - 9

2 UNIT 9 9 18

24 kBtu( 2 rooms)

Combination

Unit-A Unit-B Total

1 UNIT9 - 9

12 - 12

9 9 18

2 UNIT 9 12 21

12 12 24

36 kBtu (3 rooms)

Combination

Unit-A Unit-B Unit-C Total

1 UNIT9 - - 9

12 - - 129 9 - 18

2 UNIT 9 12 - 21

12 12 - 24

9 9 9 27

3 UNIT9 9 12 30

9 12 12 33

12 12 12 36


Safety Precautions

Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions mustbe followed. Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is

classified by the following indications.

Meanings of symbols used in this manual are as shown below.

WARNING

CAUTION

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to properties only.

WARNING Installation

Be sure not to do.

Be sure to follow the instruction.

Do not use a defective or under-rated circuit breaker. Use thisappliance on a dedicated circuit.

• There is risk of fire or electricshock.

For electrical work, contact thedealer, seller, a qualified electrician,or an Authorized Service Center.

• Do not disassemble or repair theproduct. There is risk of fire orelectric shock.

Always ground the product.


Install the panel and the coverof control box securely.


Always install a dedicated cir-cuit and breaker.

• Improper wiring or installation maycause fire or electric shock

Use the correctly rated break-er or fuse.


Service Manual 5

Safety Precautions

Do not install, remove, or re-install the unit by yourself(customer).

• There is risk of fire, electric shock,explosion, or injury.

Be cautious when unpackingand installing the product.

• Sharp edges could cause injury.Be especially careful of the caseedges and the fins on the con-denser and evaporator.

For installation, always con-tact the dealer or anAuthorized Service Center.

• There is risk of fire, electric shock,explosion, or injury.

Do not install the product on adefective installation stand.

• It may cause injury, accident, ordamage to the product.

Be sure the installation areadoes not deteriorate with age.

• If the base collapses, the air condi-tioner could fall with it, causingproperty damage, product failure,and personal injury.

Do not let the air conditionerrun for a long time when thehumidity is very high and adoor or a window is left open.

• Moisture may condense and wet ordamage furniture.

Do not allow water to run intoelectric parts.

• It may cause There is risk of fire,failure of the product, or electricshock.

Do not store or use flammablegas or combustibles near theproduct.

• There is risk of fire or failure ofproduct.

Do not use the product in atightly closed space for a longtime.

• Oxygen deficiency could occur.

Gasolin


Safety Precautions

Do not open the inlet grill of the productduring operation. (Do not touch the elec-trostatic filter, if the unit is so equipped.)

• There is risk of physical injury,electric shock, or product failure.

When the product is soaked(flooded or submerged), contactan Authorized Service Center.


Be cautious that water couldnot enter the product.

• There is risk of fire, electric shock,or product damage.

Ventilate the product from time to time whenoperating it together with a stove, etc.

• There is risk of fire or electric shock.

Turn the main power off when cleaning ormaintaining the product.

• There is risk of electric shock.

When flammable gas leaks,turn off the gas and open awindow for ventilation beforeturn the product on.

• Do not use the telephone or turnswitches on or off. There is risk ofexplosion or fire

If strange sounds, or smokecomes from product. Turn thebreaker off.

• There is risk of electric shock orfire.

Stop operation and close thewindow in storm or hurricane.If possible, remove the prod-uct from the window beforethe hurricane arrives.

• There is risk of property damage,failure of product, or electric shock.

Service Manual 7

Safety Precautions

When the product is not to be used for a long time,disconnect the power by turning off the breaker.

• There is risk of product damage or failure, or unintend-ed operation.

Take care to ensure that nobody could step onor fall onto the outdoor unit.

• This could result in personal injury and product dam-age.

Always check for gas (refrigerant) leak-age after installation or repair of product.

• Low refrigerant levels may causefailure of product.

Install the drain hose to ensure thatwater is drained away properly.

• A bad connection may cause waterleakage.

Keep level even wheninstalling the product.

• To avoid vibration or water leak-age.

Do not install the productwhere the noise or hot airfrom the outdoor unit couldoftend neighbors.

• It may cause a problem for yourneighbors.

Use two or more people to liftand transport the product.

• Avoid personal injury.

Do not install the productwhere it will be exposed tosea wind (salt spray) directly.

• It may cause corrosion on theproduct. Corrosion, particularly onthe condenser and evaporator fins,could cause product malfunction orinefficient operation.

CAUTION Installation

90°


Safety Precautions

Do not expose the skin direct-ly to cool air for long periodsof time. (Don't sit in the draft.)

• This could harm to your health.

Do not use the product forspecial purposes, such aspreserving foods, works ofart, etc. It is a consumer airconditioner, not a precisionrefrigeration system.

• There is risk of damage or loss ofproperty.

Do not block the inlet or outletof air flow.

• It may cause product failure.

Use a soft cloth to clean. Donot use harsh detergents, sol-vents, etc.

• There is risk of fire, electric shock,or damage to the plastic parts ofthe product.

Do not touch the metal parts ofthe product when removing theair filter. They are very sharp!

• There is risk of personal injury.

Do not step on or put anytingon the product. (outdoorunits)

• There is risk of personal injury andfailure of product.

Always insert the filter secure-ly. Clean the filter every twoweeks or more often if neces-sary.

• A dirty filter reduces the efficiency ofthe air conditioner and could causeproduct malfunction or damage.

Do not insert hands or otherobjects through the air inlet oroutlet while the product isoperated.

• There are sharp and moving partsthat could cause personal injury.

Do not drink the water drainedfrom the product.

• It is not sanitary and could causeserious health issues.

Operational

Wax Thinner

Service Manual 9

Safety Precautions

Do not recharge or disassemble the batteries.Do not dispose of batteries in a fire.

• They may burn or explode.

If the liquid from the batteries gets onto yourskin or clothes, wash it well with clean water.Do not use the remote if the batteries haveleaked.

• The chemicals in batteries could cause burns or otherhealth hazards.

Use a firm stool or ladder when cleaning ormaintaining the product.

• Be careful and avoid personal injury.

Replace the all batteries in the remote controlwith new ones of the same type. Do not mixold and new batteries or different types of bat-teries.

• There is risk of fire or explosion

If you eat the liquid from the batteries, brushyour teeth and see doctor. Do not use theremote if the batteries have leaked.

• The chemicals in batteries could cause burns or otherhealth hazards.


Installation guide at the seaside

Installation guide at the seaside

1. Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced.2. Do not install the product where it could be exposed to sea wind (salty wind) directly. It can result corrosion

on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunc-tion or inefficient performance.

3. If outdoor unit is installed close to the seaside, it should avoid direct exposure to the sea wind. Otherwise itneeds additional anticorrosion treatment on the heat exchanger.

1. If you can’t meet above guide line in the seaside installation, please contact LG Electronics for the additional anticorrosion treatment.2. Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water

Selecting the location(Outdoor Unit)1) If the outdoor unit is to be installed close to the seaside, direct exposure to the sea wind should be avoided.

Install the outdoor unit on the opposite side of the sea wind direction.

2) In case, to install the outdoor unit on the seaside, set up a windbreak not to be exposed to the sea wind.

3) Select a well-drained place.

• It should be strong enough like concrete to preventthe sea wind from the sea.

• The height and width should be more than 150% ofthe outdoor unit.

• It should be keep more than 70 cm of spacebetween outdoor unit and the windbreak for easyair flow.

Sea wind Sea wind

Sea wind

Windbreak

Service Manual 11

Dimensions

Dimensions

Indoor Unit

Split Type Indoor

Installation plate

D

H

W

W mm(in) 840(33) 895(35.2)

H mm(in) 270(10.6) 282(11.1)

D mm(in) 153(6) 165(6.5)

Model

Dimension

Split Type

S49 kBtu/h

SE12 kBtu/h


Outdoor Unit

W

D L1

L2

L4L3

H

L7L5L6

W mm(in) 870(34.3)

H mm(in) 655(25.8)

D mm(in) 320(12.6)

L1 mm(in) 370(14.6)

L2 mm(in) 25(1.0)

L3 mm(in) 775(30.5)

L4 mm(in) 25(1.0)

L5 mm(in) 546(21.5)

L6 mm(in) 160(6.3)

L7 mm(in) 160(6.3)

UE18kBtu/h

MODEL

DIM

Dimensions

Service Manual 13

W

D L1

L2

L4L3

H

L7L5L6

W mm(in) 870(34.3)

H mm(in) 808(31.8)

D mm(in) 320(12.6)

L1 mm(in) 370(14.6)

L2 mm(in) 25(1.0)

L3 mm(in) 775(30.5)

L4 mm(in) 25(1.0)

L5 mm(in) 546(21.5)

L6 mm(in) 160(6.3)

L7 mm(in) 160(6.3)

UE 124kBtu/h

MODEL

DIM


Dimensions

L6L7 L8L9

L4

H

L5W

D L1

L3

L2

L10

L11L

11L1

1L1

1L1

1

Gas side3-way valve

Liquid side2-way valve

UE236kBtu/h

MODEL

DIM

W mm(in) 870(34.3)

H mm(in) 1038(40.7)

D mm(in) 320(12.6)

L1 mm(in) 360(14.2)

L2 mm(in) 340(13.4)

L3 mm(in) 25(1.0)

L4 mm(in) 1035(40.8)

L5 mm(in) 25(1.0)

L6 mm(in) 546(21.5)

L7 mm(in) 160(6.3)

L8 mm(in) 160(6.3)

L9 mm(in) 44(11.7)

L10 mm(in) 64.5(2.5)

L11 mm(in) 50(2.0)

Service Manual 15

Product Specifications


Indoor Unit

Nominal Cooling Capacity kcal/h(W)

Btu/h

Nominal Heating Capacity kcal/h(W)

Btu/h

Air Circulation H/M/L CMM(CFM)

Setting temperature range(cool/heat) °C

Fan motor Output W

Model

Input V

Running Current A

Fan Type

No. Used / Diameter EA/inch(mm)

Noise Level (Sound Press,1m) H/M/L dBA

Temperature controller

Coil Tube Size (OD) inch(mm)

Fins per inch

No. of Rows & Column

Dehumidification Rate l/h

Dimensions (W*H*D) inch(mm)

Net Weight kg(lbs)

Piping Connection Liquid inch(mm)

Gas inch(mm)

Drain hose (ID Ø) mm

Packing Dimension (W*H*D) inch(mm)

Stuffing Quantity With(Without) S/Parts 20/40ft(hi-c)

Wall MountedB-MMC09FA-1 B-MMH09FA-1 B-MMC12FA-1 B-MMH12FA-1

Indoor Unit TypeModel

Note : 1. See the page "Combination Table"2. Due to our policy of innovation some specifications may be changed without notification.

2,267(2,637) 2,267(2,637) 3,023(3,516) 3,023(3,516)

9,000 9,000 12,000 12,000

- 2,267(2,637) - 3,023(3,516)

- 9,000 - 12,000

8.2(289) 8.2(289) 9.4(332) 9.4(332)

18~30 18~30 18~30 18~30

15 15 15 15

DL-88430LGIF DL-88430LGIF DL-88430LGIF DL-88430LGIF

DC36 DC36 DC36 DC36

0.15 0.15 0.15 0.15

Cross Flow Fan Cross Flow Fan Cross Flow Fan Cross Flow Fan

1/3.74(95) 1/3.74(95) 1/3.74(95) 1/3.74(95)

31 / 29 / 22 31 / 29 / 22 36 / 32 / 29 36 / 32 / 29

Thermistor Thermistor Thermistor Thermistor

0.197(5.0) 0.197(5.0) 0.197(5.0) 0.197(5.0)

20 20 18 18

2R,15C 2R,15C 2R,15C 2R,15C

- 1.1 - 1.2

33.0*10.6*6.0(840*270*153) 33.0*10.6*6.0(840*270*153) 35.2*11.1*6.5(895*282*165) 35.2*11.1*6.5(895*282*165)

7(15.4) 7(15.4) 9.5(20.9) 9.5(20.9)

1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35)

3/8 (9.52) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52)

20 20 20 20

35.7*13.1*8.8(906*332*223) 35.7*13.1*8.8(906*332*223) 38.3*9.1*14.6(973*231*372) 38.3*9.1*14.6(973*231*372)

440/910 (1091) 440/910 (1091) 353/719 (792) 353/719 (792)


Model

Cooling Capacity Btu/hrW

kcal/hrHeating Capacity Btu/hr

Wkcal/hr

Input Cooling WHeating W

Running Current(208/230V) Cooling AHeating A

Power Supply Ø,V,HzMax. Number of Connectable Indoor UnitsCompressor Type(Constant) Model

Motor TypeQuantity EaMotor Input WOil Charge ccOil TypeCapacitor µF/VacO.L.P Type(model name)

Compressor Type(Constant) Model


Refrigerant charge Charge g(oz)TypeControl

Coil Tube Size (OD) inch(mm)Fins per inchNo. of Rows & Column/No.

Fan motor ModelOutput WCapacitor µF/Vac

Fan TypeNo. Used / Diameter EA/inch(mm)Discharge Side / Top

Air Circulation Outdoor CMM(CFM)Noise Level(H/L) at 230V Sound Press,1m dB(A) 1DefrostingSVC Valve Liquid inch(mm)

GasDimensions W*H*D inch(mm)Net Weight Outdoor kg(lbs)Max. Interunit Piping Length Total of Each Room m

For One Room mMax. Installation Indoor Unit~Outdoor Unit mHeight Difference Indoor Unit~Indoor Unit mPacking Dimension W*H*D inch(mm)Testing CombinationsStuffing Quantity 20/40ft

9,000~18,0002637~52752267~4536

9,000~18,0002637~52752267~45361070~19801040~1960

4.9~8.84.6~8.6

1,208/230,602

RotaryGK094KHermetic

1955

330±10 FVC68D 30 / 370

External Type(MRA98996-12026)Rotary

GK113KHermetic

11,120

330±10 FVC68D35 / 370

External Type(MRA12124-12026)1400(49)R410AEEV

0.276(7.0)18

2R,28CIC-1640LG GE

906/370

Propeller1 / 460Side

50(1765.7)51

Invertion Cycle1/4 (6.35) * 2EA3/8 (9.52) * 2EA

34.3*25.8*12.6 (870*655*320)57(125.7)

30157.57.5

40.2*28.2*17.2 (1020*716*437)S4 9k + S4 9k

81/171

A-MMH18FA-1


Outdoor Unit - Multiple piping models

Note:1. Capacities are based on the following conditions:

Cooling: - Indoor Temperature 26.7˚C(80˚F) DB/19.4˚C(67˚F) WB- Outdoor Temperature 35˚C(95˚F) DB/23.9˚C(75˚F) WB

Heating: - Indoor Temperature 21.1˚C(70˚F) DB/15.6˚C(60˚F) WB- Outdoor Temperature 8.3˚C(47˚F) DB/6.1˚C(43˚F) WB

Piping Length - Interconnecting Piping Length 7.5m- Level Difference of Zero

2. Wiring cable size must comply with the applicable local and national code.3. Capacities are Net Capacities.4. : See the page "Combination Table"5. The specification may be subject to change without prior notice for purposeof improvement.

Service Manual 17

Model



Wkcal/hr











Air Circulation Outdoor CMM(CFM)Noise Level(H/L) at 230V Sound Press,1m dB(A) 1DefrostingSVC Valve Liquid inch(mm)


For One Room mMax. Installation Indoor Unit~Outdoor Unit mHeight Difference Indoor Unit~Indoor Unit mPacking Dimension W*H*D inch(mm)Testing CombinationsStuffing Quantity 20/40ft

9,000~24,000 9,000~24,0002637~7033 2637~70332267~6037 2267~6037

- 9,000~24,000- 2637~7033- 2267~6037

1170~2390 1170~2390- 1220~2440

7.7~10.1 7.7~10.1- 7.4~9.8

1,208/230,60 1,208/230,602 2

Rotary RotaryGK094K GK094KHermetic Hermetic

1 1955 955

330±10 330±10 FVC68D FVC68D 30 / 370 30 / 370

External Type(MRA98996-12026) External Type(MRA98996-12026)Rotary Rotary

GK141K GK141KHermetic Hermetic

1 11430 1,430

350±10 350±10 FVE FVE

35 / 370 35 / 370External Type(MRA12105-12026) External Type(MRA12105-12026)

1600 1600R410A R410AEEV EEV

0.276(7.0) 0.276(7.0)18 18

2R,36C 2R,36CIC-1640LG GE IC-1640LG GE

90 906/370 6/370

Propeller Propeller1 / 460 1 / 460Side Side

53(1872) 53(1872)54 54- Invertion Cycle

1/4 (6.35) * 2EA 1/4 (6.35) * 2EA3/8 (9.52) * 2EA 3/8 (9.52) * 2EA

34.3*31.8*12.6 (870*808*320) 34.3*31.8*12.6 (870*808*320)64(141.1) 64(141.1)

30 3015 157.5 7.57.5 7.5

40.2*34.3*17.2 (1022*870*437) 40.2*34.3*17.2 (1022*870*437)SE 12K +SE 12K SE 12K +SE 12K

54/114 54/114

A-MMC24FA-1 A-MMH24FA-1









Model



Wkcal/hr











Air Circulation Outdoor CMM(CFM)Noise Level(H/L) at 230V Sound Press,1m dB(A) 1SVC Valve Liquid inch(mm)


For One Room mMax. Installation Indoor Unit~Outdoor Unit mHeight Difference Indoor Unit~Indoor Unit mPacking Dimension W*H*D inch(mm)Stuffing Quantity 20/40ft

9,000~36,000 9,000~36,0002637~10,550 2637~10,5502267~9071 2267~9071

- 9,000~36,000- 2637~10,550- 2267~9071

1320~3680 1320~3680- 1410~3340

5.9~16.6 5.9~16.6- 6.3~15.0

1,208/230,60 1,208/230,603 3

Rotary RotaryGK141K GK141K

2 Pole Induction(PSC) 2 Pole Induction(PSC)1 1

1430 1430350Å10 350Å10 FVC68D FVC68D 35 / 370 35 / 370

External Type External TypeRotary Rotary

GJ230K GJ230K2 Pole Induction(PSC) 2 Pole Induction(PSC)

1 12370 2370

700±10 7000±10 FVC68D FVC68D 50 / 400 50 / 400

Internal Type Internal Type2400 2400

R410A R410AEEV EEV

0.276(7.0) 0.276(7.0)18 18

2R,48C 2R,48CARC286B01 * 2 ARC286B01 * 2

102 1022/370 2/370

Propeller Propeller2 / 15.7(400) 2 / 15.7(400)

Side Side63(2225) 63(2225)

51 511/4 (6..35) * 3EA 1/4 (6..35) * 3EA3/8 (9.52) * 3EA 3/8 (9.52) * 3EA

34.3*40.7*12.6 (870*1038*320) 34.3*40.7*12.6 (870*1038*320)84(185.2) 84(185.2)

45 4515 157.5 7.57.5 7.5

41.3*44.9*17.3 (1048*1140*439) 41.3*44.9*17.3 (1048*1140*439)53/111 53/111







Service Manual 19

Installation

Installation

Type "A" screw and plastic anchor

Type "B" screw Remote Control Holder

Installation plate

Figure FigureName

Screw driver

Electric Drill

Measuring Tape, Knife

Hole Core Drill

Spanner

Torque wrench

Ohmmeter

Hexagonal wrench

Ammeter

Gas Leak Detector

Thermometer, Level

Flaring Tool Set

Name

Installation Parts

Installation Tools

Read carefully, and then follow step by step.


Installation

Select the best location

Indoor unit1. Do not have any heat or steam near the unit.

2. Select a place where there are no obstacles in frontof the unit.

3. Make sure that condensation drainage can be conve-niently routed away.

4. Do not install near a doorway.

5. Ensure the spaces indicated by arrows from the wall,ceiling, fence or other obstacles.

6. Use a Metal Detector or Metal Scanner to locatestuds to prevent unnecessary damage to the wall.

Outdoor unit1. If an awning is built over the unit to prevent direct

sunlight or rain exposure, make sure that heat radia-tion from the condenser is not restricted.

2. Ensure that the spaces indicated by arrows aroundfront, back and side of the unit.

3. Do not place animals and plants in the path of thewarm air.

4. Take the air conditioner weight into account andselect a place where noise and vibration are mini-mum.

5. Select a place so that the warm air and sound fromthe air conditioner do not disturb neighbors.

Rooftop Installations:If the outdoor unit is installed on a roof structure, besure to level the unit. Ensure the roof structure andanchoring method are adequate for the unit location.Consult local codes regarding rooftop mounting.

More than 20 cm(7.9 inch)



More than 2.4m(8 ft)

more than 70 cm(27.6 inch)








CAUTION: Install the indoor uniton the wall where the height fromthe floors more than 2.4 m (8 ft).

18 / 24 kBtu

36 kBtu

Service Manual 21

Installation

Piping length and elevation

CAUTION: Capacity is based on standard length and maximum allowance length is on thebasis of reliability.

Multi Piping Type

18 kBtu 30 m (100 ft) 15 m (50 ft) 3 m (10 ft) 7.5 m (25 ft) 7.5 m (25 ft)



CapacityMax total length

of all pipes(A+B/A+B+C)

Max length ofeach pipe(A/B/C)

Min length ofeach pipe(A/B/C)

Max Elevationbetween eachindoor unit and

outdoor unit (h1)

Max elevationbetween indoor

units (h2)

h2

h2h1

A

BB

C

h2

h1

A

B

h1

h1

h1

9 kBtu 9.52 mm (3/8") 6.35 mm (1/4") 7.5 m (25 ft) 20 g/m (0.22 oz/ft)

12 kBtu 9.52 mm (3/8") 6.35 mm (1/4") 7.5 m (25 ft) 20 g/m (0.22 oz/ft)

Gas Liquid Standard LengthAdditional

RefrigerantIndoor Capacity

Pipe Size

18 / 24 kBtu 36 kBtu


Installation

The wall you select should be strong and solid enough toprevent vibration

1. Mount the installation plate on the wall with type "A" screws. If mounting the unit on a concrete wall,use anchor bolts.

• Mount the installation plate horizontally by aligning thecenterline using a level.

2. Measure the wall and mark the centerline. It is alsoimportant to use caution concerning the location of theinstallation plate-routing of the wiring to power outlets isthrough the walls typically. Drilling the hole through thewall for piping connections must be done safely.

Fixing Installation Plate(Standard Type)

Installation Plate

Type "A" screw

ChassisHook

Installation plate

Left rear piping Right rear pipingØ70mm Ø70mm

D B

AC

• Drill the piping hole with a Ø 70 mm (Ø 2.75 inch) hole core drill. Drill the piping hole at either the right or the leftwith the hole slightly slanted to the outdoor side.

Drill a hole in the wall

5-7

mm

(0.2

"~0.

3")

Indoor

WALL

Outdoor

A B C D

S4 50 105 59 105

SE 65 110 85 110

CHASSIS(Grade)

Distance (mm)

Service Manual 23

Flaring Work and Connection of Piping

Flaring workMain cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure.

Cut the pipes 1. Use the piping kit accessory or the pipes purchased locally.

2. Measure the distance between the indoor and the outdoor unit.

3. Cut the pipes a little longer than measured distance.

4. Cut the cable 1.5m (5.0ft) longer than the pipe length.

Burrs removal1. Completely remove all burrs from the cut cross section of

pipe/tube.

2. Put the end of the copper tube/pipe in a downward directionas you remove burrs in order to avoid dropping burrs into thetubing.

Putting nut on• Remove flare nuts attached to indoor and outdoor unit, then

put them on pipe/tube having completed burr removal.(not possible to put them on after flaring work)

Flaring work• Carry out flaring work using flaring tool as shown below.• Firmly hold copper pipe in a Bar in the dimension shown in the

table Below.

Copperpipe 90° Slanted Uneven Rough

Pipe

Reamer

Point down

Flare nut

Copper tube

mm inch mmØ6.35 1/4 0~0.5Ø9.52 3/8 0~0.5

Outside diameter A

Bar

Copper pipe

Clamp handleRed arrow mark

Cone

Yoke

Handle

Bar"A"




Check1. Compare the flared work with the figure by.

2. If a flared section is defective, cut it off and do flaring workagain.

Indoor1. Prepare the indoor unit's piping and drain hose for installation through the wall.

2. Remove the plastic tubing retainer(see the illustration by)and pull the tubing and drain hose away from chassis.

3. Replace only the plastic tubing holder 1, not the holder 2 inthe original position.

1. Route the indoor tubing and the drain hose in the directionof rear right.

2. Insert the connecting cable into the indoor unit from the out-door unit through the piping hole.• Do not connect the cable to the indoor unit.• Make a small loop with the cable for easy connection later.

3. Tape the tubing, drain hose, and the connecting cable. Besure that the drain hose is located at the lowest side of thebundle. Locating at the Upper side can cause drain pan tooverflow inside the unit.

If the drain hose is routed inside the room, insulate the hosewith an insulation material* so that dripping from "sweat-ing"(condensation) will not damage furniture or floors.*Foamed polyethylene or equivalent is recommended.

Inclined

Inside is shiny without scratches

Smooth all round

Even lengthall round

Surfacedamaged

Cracked Uneventhickness

= Improper flaring =

Connecting the Piping

For right rear piping

Drain hose

Connecting pipe

Connecting cable

Tape

Drain hose

Service Manual 25


4. Indoor unit installationHook the indoor unit onto the upper portion of the installa-tion plate.(Engage the two hooks of the rear top of theindoor unit with the upper edge of the installation plate.)Ensure that the hooks are properly seated on the installa-tion plate by moving it left and right.

Press the lower left and right sides of the unit against theinstallation plate until the hooks engage into theirslots(clicking sound).

Connecting the piping to the indoor unit and drain hoseto drain pipe.

1. Align the center of the pipes and sufficiently tighten theflare nut by hand.

2. Tighten the flare nut with a wrench.

3. When extending the drain hose at the indoor unit, installthe drain pipe.

Wrap the insulation material around the connecting por-tion.

1. Overlap the connection pipe insulation material and theindoor unit pipe insulation material. Bind them togetherwith vinyl tape so that there may be no gap.

2. Wrap the area which accommodates the rear piping hous-ing section with vinyl tape.

3. Bundle the piping and drain hose together by wrappingthem with vinyl tape for enough to cover where they fit intothe rear piping housing section.

Drain hose

Connectingcable

Indoor unit tubing Flare nut Pipes

Wrench

Indoor unit tubing

Open-end wrench (fixed)

Connection pipe

Flare nut

Vinyl tape(narrow)Adhesive

Drain pipe

Indoor unit drain hose

Plastic bands Insulation material

Vinyl tape(narrow)

Connection pipe

Connecting cableVinyl tape (wide) Wrap with vinyl tape

Indoor unit pipe

Pipe

Wrap with vinyl tape

Drain hose

Pipe

Vinyl tape(wide)

mm inch kg.m lbf.inØ6.35 1/4 1.8 156.2Ø9.52 3/8 4.2 364.5

Outside diameter Torque



1. Route the indoor tubing and the drain hose to the requiredpiping hole position.

2. Insert the piping, drain hose, and the connecting cable intothe piping hole.

3. Insert the connecting cable into the indoor unit.• Don't connect the cable to the indoor unit.• Make a small loop with the cable for easy connection

later.

4. Tape the drain hose and the connecting cables.

5. Indoor unit installation• Hang the indoor unit from the hooks at the top of the

installation plate.• Insert the spacer etc. between the indoor unit and the

installation plate and separate the bottom of the indoorunit from the wall.

Connecting the piping to the indoor unit and the drainhose to drain pipe.1. Align the center of the pipes and sufficiently tighten the

flare nut by hand.

2. Tighten the flare nut with a wrench.

3. When extending the drain hose at the indoor unit, installthe drain pipe.

For left rear piping

Drain pipe

Connectingcable

Installation plate

SpacerIndoor unit

8cm

Indoor unit tubing Flare nut Pipes

Wrench

Indoor unit tubing

Connection pipe

Flare nut

Open-end wrench (fixed)

Vinyl tapeAdhesive

Drain hose

Indoor unit drain hose

(narrow)

mm inch kg.m lbf.inØ6.35 1/4 1.8 156.2Ø9.52 3/8 4.2 364.5

Outside diameter Torque

Service Manual 27

Wrap the insulation material around the connecting por-tion.1. Overlap the connection pipe heat insulation and the indoor

unit pipe heat insulation material. Bind them together withvinyl tape so that there may be no gap.

2. Wrap the area which accommodates the rear piping hous-ing section with vinyl tape.

3. Bundle the piping and drain hose together by wrappingthem with cloth tape over the range within which they fitinto the rear piping housing section.

Reroute the pipings and the drain hose across the backof the chassis.

Indoor unit installation 1. Remove the spacer.

2. Ensure that the hooks are properly seated on the installa-tion plate by moving it left and right.

3. Press the lower left and right sides of the unit against theinstallation plate until the hooks engage into theirslots(clicking sound).


Plastic bands Insulation material

Vinyl tape(narrow)

Connectionpipe

Connecting cable

Indoor unit piping

Pipe

Vinyl tape(wide)

Wrap with vinyl tape

Drain hoseVinyl tape(narrow)

Pipe

Wrap with vinyl tape(wide)

Piping forpassage throughpiping hole

Drain hose

Connectingcable



Installation Information. For left piping. Follow the instruction below.

Good case• Press on the upper side of clamp and unfold the tubing to downward slowly.

Bad case• Following bending type from right to left may cause damage to the tubing.

Service Manual 29


Remove the battery cover from the remote con-troller.• Slide the cover according to the arrow direction.

Insert the two batteries.• Be sure that the (+) and (-) directions are correct.• Be sure that both batteries are new.

Re-attach the cover.• Slide it back into position.

REMOTE CONTROL PREPARATION(OPTIONAL)

HOW TO MOUNT ONTO A WALL

HOW TO INSERT BATTERIES

• Do not use rechargeable batteries,such batteries differ from standard drycells in shape, dimensions, and per-formance.

• Romove the batteries from the remotecontroller if the air conditioner is notgoing to be used for some long time.

HOW TO INSERT BATTERIES



OutdoorAlign the center of the pipings and sufficiently tighten the flarenut by hand.

Finally, tighten the flare nut with torque wrench until thewrench clicks.

• When tightening the flare nut with torque wrench, ensurethe direction for tightening follows the arrow on the wrench.

Liquid side piping

Torque wrench

B-UNIT

A-UNITGas side piping

Outdoor unit

Outside diameter Torquemm inch kg.m lbf.in

Ø6.35 1/4 1.8 156.2Ø9.52 3/8 4.2 364.5

Service Manual 31

Connect the cable to the indoor unit by connecting the wires to the terminals on the control board individuallyaccording to the outdoor unit connection. (Ensure that the color of the wires of the outdoor unit and the terminal No. arethe same as those of the indoor unit.)The earth wire should be longer than the common wires.The circuit diagram is not subject to change without notice.When installing, refer to the electrical diagram behind the front panel of Indoor Unit. The wiring for the outdoor unit can be found on the inside of the Outdoor Unit control cover.

Connect the cable to the Indoor unit.

WARNING: • The circuit diagram is not subject to change without notice. • Be sure to connect wires according to the wiring diagram.• Connect the wires firmly, so that not to be pulled out easily.• Connect the wires according to color codes by referring to the wiring diagram.

WARNING: Provide a circuit breakerbetween power source and the outdoorunit as shown below.

WARNING: The power cord connected to the outdoor unit should be complied with the following speci-fications (ETL recognized and CSA certified).

The power connecting cable connected to the indoor and outdoor unit should be complied with the fol-lowing specifications (ETL recognized and CSA certified).

Air Conditioner

Main power source

Circuit BreakerUse a circuit breakeror time delay fuse.

GN/YL

20mm

AWG18

Low voltage (below 40V)

WARNING: When using the separate wire as the power cord, please fix the separate wire into the con-trol box panel by using tie wrap as the fixture.

Connecting the Cable between Indoor Unit and Outdoor Unit


GN/YL

20 mm(0.79 inch)

Line voltage (208~230V)

18 / 24 kBtu 36 kBtu

GN/YL

20 mm(0.79 inch)

Line voltage (208~230V)

AWG14AWG12 (Allowable temperature to the wire rated at least 90C˚)



Connect the cable to the Outdoor unit.1. Remove the cover control from the unit by loosening the

screw.Connect the wires to the terminals on the control boardindividually as the following.

2. Secure the cable onto the control board with the holder(clamper).

3. Refix the cover control to the original position with thescrew.

: 1. Separately wire the high and low voltage line.

2. Use heat-proof electrical wiring capable of withstanding temperature up to 75°C(167°F).

3. Use outdoor and waterproof connection cable rated more than 300V for the connection between indoor and outdoor unit.(For example, Type SJOW)

WARNING:

• Be sure to comply with local codes while running the wire from the indoor unit to the outdoor unit(size ofwire and wiring method, etc).

• Every wire must be connected firmly.• No wire should be allowed to touch refrigerant tubing, the compressor or any moving parts.

NOTICE

Outdoor unit

Over 5mm

Holder forpower supply

cord

Connectingcable

Cover control

Terminal block

Power supplycable

A-UNIT

A Indoor B Indoor

Teminal on the Indoor Unit

Teminal on the Outdoor Unit Teminal on the Outdoor Unit

43

43

21

21 4321L1 L2

B-UNITTeminal on the Indoor Unit

4321

Power Source208/230V AC(High voltage)

18 kBtu

24 kBtu

Connecting cable(Low voltage)

A-UNIT

B IndoorA Indoor


Teminal on the Outdoor UnitTeminal on the Outdoor Unit Teminal on the Outdoor Unit

43

43

21

21 4321


4321


L2L1Connecting cable(Low voltage)

36 kBtu

A-UNIT

B IndoorA Indoor


Teminal on the Outdoor UnitTeminal on the Outdoor Unit Teminal on the Outdoor Unit

43

43

21

21 4321


4321


L2L1

C IndoorTeminal on the Outdoor Unit

4321

C-UNITTeminal on the Indoor Unit

4321

Connecting cable(Low voltage)

Service Manual 33

(1) Remove two-caps on the conduit panel.(for low voltage line)

(2) Pull out connection cable through conduit.

(3) After conduit to the panel, fix nut to the oppositeside of panel.

(4) Pass the connection cabel through the hole.

(5) Properly connect the cable on the terminal block.

(6) Fix the connection cable with cord clamp providedon the unit not to have strain at the terminal whenthe connection cable is pulled outside up to a 35pound weight

WARNING: Loose wiring may cause the termi-nal to overheat or result in unit malfunction. Afire hazard may also exist. Therefore, be sureall wiring is tightly connected.

When connecting each power wire to the corresponding terminal,follow instructions "How to connect wiring to the terminals" andfasten the wire tightly with the fixing screw of the terminal plate.

How to connect wiring to the terminalsFor strand wiring

(1) Cut the wire end with a wire cutter or wire-cutting pliers,then strip the insulation to expose the strand wiring about10mm(3/8").

(2) Using a screwdriver, remove the terminal screw(s) on theterminal plate.

(3) Using a round terminal fastener or pliers, securely clampeach stripped wire end with a round terminal.

(4) Position the round terminal wire, and replace and tightenthe terminal screw using a screwdriver.

Connection method of the connecting cable(Example)

High voltage

Low voltage

Str

ip 1

0mm

(3/8

")

Roundterminal

Connecting cable

Loosening theterminal blockscrew

Fastening the wire tightly

Strand wire

G

Terminalblock

Lock nut

Power supply line(1ø, 230/208V)

Conduit panel

Cap(Reuse)

Cord clamp

Hole(for low voltage line)Cap(Remove)Taping(for sealing)

Low voltage line(connecting cable)




Connect the cable to the indoor unit

CAUTION: Provide a circuit breaker between power source and the unit as shownbelow.

AirConditioner Circuit Breaker

Use a circuitbreaker or timedelay fuse.

Main power source

Model Power source Fuse or breakerCapacity

1Ø, 230 / 208V 20 A1Ø, 230 / 208V 25 A1Ø, 230 / 208V 40 A

18 kBtu24 kBtu36 kBtu

1. Connect the wires to the terminals on the control boardindividually according to the outdoor unit connection.

• Ensure that the color of the wires of outdoor unit and theterminal No. are the same as those of indoor unit respec-tively.

2. Attach the Grille onto the cabinet.

• Grasp the lower left and right side of the Grille andengage four tabs on the top inside edge of the chassis.

• Press the Grille toward the chassis until it will be back intoplace.

Connecting cable

Service Manual 35

Checking the drainage

To check the drainage.1. Pour a glass of water on the evaporator.

2. Ensure the water flows through the drain hose of theindoor unit without any leakage and goes out the drain exit.

Drain piping1. The drain hose should point downward for easy drain flow.

2. Do not make drain piping.

Downward slope

Do not raiseAccumulateddrain water

Tip of drain hose dipped in water

Air

WavingWaterleakage

Waterleakage Ditch

Less than 50mm gap

Waterleakage

Checking the Drainage, Forming the Pipings and Long Pipe Setting




Forming the piping

Form the piping by wrapping the con-necting portion of the indoor unit withinsulation material and secure it withtwo kinds of vinyl tape.• If you want to connect an additional drain hose, the end

of the drain outlet should be routed above the ground.Secure the drain hose appropriately.

In cases where the outdoor unit isinstalled below the indoor unit performthe following.1. Tape the piping, drain hose and connecting cable from

down to up.2. Secure the tapped piping along the exterior wall using

saddle or equivalent.

In cases where the Outdoor unit isinstalled above the Indoor unit performthe following.1. Tape the piping and connecting cable from down to up.2. Secure the taped piping along the exterior wall. Form a

trap to prevent water entering the room.3. Fix the piping onto the wall by saddle or equivalent.

Seal a small opening around the pipings with gum type sealant.

Trap

Trap

• Trap is required to prevent water from enteringinto electrical parts.

Plasticband

Taping

Drain hose

Pipings

Connectingcable

Power supplycord

Seal a small opening around the pipings with gum type sealant.

Service Manual 37

Air and moisture remaining in the refrigerant system have undesirable effects as indicated below.1. Pressure in the system rises.2. Operating current rises.3. Cooling(or heating) efficiency drops.4. Moisture in the refrigerant circuit may freeze and block capillary tubing.5. Water may lead to corrosion of parts in the refrigeration system.Therefore, the indoor/outdoor unit and connecting tube must be checked for leak tight, and vacuumed to remove incondensi-ble gas and moisture in the system.

Preparation• Check that each tube(both liquid and gas side tubes) between

the indoor and outdoor units have been properly connected andall wiring for the test run has been completed. Remove the ser-vice valve caps from both the gas and the liquid side on the out-door unit. Check that both the liquid and the gas side servicevalves on the outdoor unit are kept closed at this stage.

Leakage test• Connect the manifold valve(with pressure gauges) and dry nitro-

gen gas cylinder to this service port with charge hoses.

CAUTION: Be sure to use a manifoldvalve for leak testing.

The high side manifold valve must alwaysbe kept closed.

• Pressurize the system to no more than 150 P.S.I.G. with drynitrogen gas and close the cylinder valve when the gaugereading reached 150 P.S.I.G. Next, test for leaks with liquidsoap.

CAUTION: To avoid nitrogen entering therefrigerant system in a liquid state, the top

of the cylinder must be higher than its bottomwhen you pressurize the system. Usually, thecylinder is used in a vertical standing position.

: Leakage test shoud be done for each indoorunit connection set, separately.

1. Do a leakage test of all joints of the tubing(both indoor andoutdoor) and both gas and liquid side service valves.Bubbles indicate a leak. Be sure to wipe off the soap with aclean cloth.

2. After the system is found to be free of leaks, relieve thenitrogen pressure by loosening the charge hose connectorat the nitrogen cylinder. When the system pressure isreduced to normal, disconnect the hose from the cylinder.

NOTICE

Checking method

Charge hose

Nitrogen gascylinder(in verticalstanding position)

Indoor unit

Outdoor unit

Lo Hi

Manifold valve

Pressure gauge

Air Purging and Evacuation




1. Connect the charge hose end described in the precedingsteps to the vacuum pump to evacuate the tubing andindoor unit.Confirm the "Lo" knob of the manifold valve is open. Then,run the vacuum pump.The operation time for evacuation varies with tubing lengthand capacity of the pump. The following table shows thetime required for evacuation.

2. When the desired vacuum is reached, close the "Lo" knobof the manifold valve and stop the vacuum pump.

Finishing the job1. With a service valve wrench, turn the valve stem of liquid

side valve counter-clockwise to fully open the valve.

2. Turn the valve stem of gas side valve counter-clockwise tofully open the valve.

3. Loosen the charge hose connected to the gas side serviceport slightly to release the pressure, then remove the hose.

4. Replace the flare nut and its bonnet on the gas side ser-vice port and fasten the flare nut securely with anadjustable wrench. This process is very important to pre-vent leakage from the system.

5. Replace the valve caps at both gas and liquid side servicevalves and fasten them tight.

This completes air purging with a vacuum pump.

The air conditioner is now ready for test running.

: Repeat evacuation procedure for each indoorunit.

NOTICE

Required time for evacuation when 4 CFM vacuumpump is used

10 min. or more 15 min. or more

If tubing length is lessthan 10m (33 ft)

If tubing length is longerthan 10m (33 ft)

Indoor unit

Outdoor unit

Lo Hi

Manifold valve

Vacuum pump

Pressure gauge

Open Close

Evacuation

Service Manual 39

Each outdoor unit is factory charged (nameplate charge) for the evaporator as well as a 7.5m(25ft) line set for each indoorline. Any time total line set is used either shorter or longer then the nominal 22.5m(75ft: for tri-zone) line set length the refrigerantcharge has to be adjusted.

Whether the line set is made shorter or longer you must adjust the charge based on how many ft of tubing are either addedor removed based on 20g(0.22oz) of R-410A per meter(foot).

Example: A 80ft line set is used for tril - zone 5 additional ft X 0.22 ounces per foot= add 1.1 ounces of R-410A

Important:If you are ever uncertain of the unit charge, reclaim, evacuate and weigh in the correct charge using the unit nameplate chargeadjusting for line sets longer or shorter than 7.5m(25ft) for each indoor unit. Unit is critically charged.

18k 30m(100ft) 15m(50ft) 5m(16ft) 7.5m(25ft) 7.5m(25ft) 20g/m(0.22oz/ft)


Capacity (Btu/h)Max total length

of all pipes(A+B)

Max length ofeach pipe (A/B)

Min length ofeach pipe (A/B)

Max Elevationbetween each indoorunit and outdoor unit

(h1)


units (h2)

AdditionalRefrigerant

Charging

Charging


Capacity (Btu/h)Max total length

of all pipes(A+B+C)

Max length ofeach pipe(A/B/C)

Min length ofeach pipe(A/B/C)

Max Elevationbetween each indoorunit and outdoor unit

(h1)


units (h2)

AdditionalRefrigerant


Test Running

1. Check that all tubing and wiring have been properly con-nected.

2. Check that the gas and liquid side service valves arefully open.

1) Prepare remote controller

Remove the battery cover by pulling it according tothe arrow direction.Insert new batteries making sure that the (+) and (–)of battery are installed correctly.Reattach the cover by pushing it back into position.

NOTE:• Use 2 AAA(1.5volt) batteries. Do not use rechargeable

batteries.• Remove the batteries from the remote controller if the sys-

tem is not going to be used for a long time.

2) Precautions in test run

The initial power supply must provide at least 90% ofthe rated voltage.Otherwise, the air conditioner should not be operated.

For test run, carry out the cooling operation firstlyeven during heating season. If heating operation iscarried out firstly, it leads to the trouble of compres-sor. Then attention must be paid.

Carry out the test run more than 5 minutes withoutfail. (Test run will be cancelled 18 minutes later auto-matically)

The test run is started by pressing timer cancel buttonfive times continuously. (Room type)

To cancel the test run, press any button.

3) Settlement of outdoor unit

Anchor the outdoor unit with a bolt and nut(ø10mm)tightly and horizontally on a concrete or rigid mount.

When installing on the wall, roof or rooftop, anchor themounting base securely with a nail or wire assuming theinfluence of wind and earthquake.

In the case when the vibration of the unit is conveyed tothe hose, secure the unit with an anti-vibration rubber.

4) Evaluation of the performance

Operate unit for 15~20 minutes, then check the systemrefrigerant charge:1. Measure the pressure of the gas side service valve.2. Measure the temperature of the intake and discharge of

air.3. Ensure the difference between the intake temperature

and the discharge is more than 8°C(14.4°F) (Cooling) orreversely (Heating).

Bolt

Tubing connection

Split Type

Discharge temperature

Discharge air

Intake temperature

R-410A 35°C (95°F) 8.5~9.5kg/cm2G(120~135 P.S.I.G.)

Outside ambientTEMP.Refrigerant The pressure of the gas side

service valve.

Test Running

Service Manual 41

1. MAIN UNIT FUNCTION • DISPLAYOperation Indicator

• On while in appliance operation, off while in appliance pause• Flashing while in disconnection or short in Thermistor (3 sec off / 0.5 sec on)

Sleep Timer Indicator• On while in sleep timer mode, off when sleep timer cancel or appliance operation pause

Timer Indicator• On while in timer mode (on/off), off when timer mode is completed or canceled

Defrost Indicator• Off except when hot start during heating mode operation or while in defrost control

Cooling Mode Operation• When the intake air temperature reaches 0.5°C(0.9°F) below the setting temp, the compressor and the outdoor

fan stop.• When it reaches 0.5°C(0.9°F) above the setting temp, they start to operate again.

Compressor ON Temp Setting Temp+0.5°C(0.9°F)Compressor OFF Temp Setting Temp-0.5°C(0.9°F)

• While in compressor running, operating with the airflow speed set by the remote control. While compressor isoff fan operates at low speed regardless of the setting.

Soft Dry Operation Mode• When the dehumidification operation input by the remote control is received, the intake air temperature is

detected and the setting temp is automatically set according to the intake air temperature.26°C(78.8°F) ≤ Intake Air Temp 25°C(77°F)24°C(75.2°F) ≤ Intake Intake Air Temp<26°C(78.8°F) Intake Air Temp-1°C(30.2°F)18°C(64.4°F) ≤ Intake Intake Air Temp<24°C(75.2°F) Intake Air Temp-0.5°C(31.1°F)Intake Air Temp<18°C(64.4°F) 18°C(64.4°F)

• While compressor off, the indoor fan repeats low airflow speed and stop.• While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidification

operation and 4-min compressor off repeat.Compressor ON Temp. Setting Temp+0.5°C(0.9°F)Compressor OFF Temp. Setting Temp-0.5°C(0.9°F)

• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.

Heating Mode Operation• When the intake air temp reaches +3°(37.4°F)…above the setting temp, the compressor is turned off. When

below the setting temp, the compressor is turned on.Compressor ON Temp. Setting Temp.Compressor OFF Temp. Setting Temp.+3°C(37.4°F)

• While compressor on, the indoor fan is off when the indoor pipe temp. is below 20°C(68°F), when above27°C(80.6°F) , it operates with the low or setting speed. When the indoor pipe temp is between 20°C(68°F) and

Function of control

Operation

Operation


Operation

27°C(80.6°F), it operates with Super-Low(while in sleep mode, with the medium airflow speed).• While compressor off, the indoor fan is off when the indoor pipe temp is below 33°C(91.4°F), when above

35°C(95°F) , it operates with the low airflow speed.• While in defrost control, the indoor is outdoor fans are turned off.

Defrost Control(Heating)• Defrost operation is controlled by timer and sensing temperature of outdoor pipe.• The first defrost starts only when the outdoor pipe temperature falls below -6°C(21.2°F) after 35 minutes

passed from starting of heating operation and more than 4 minutes operation of compressor.• Defrost ends after 12 minutes passed from starting of defrost operation when the outdoor pipe temperature

rises over 15°C(59°F) even before 12 minutes.• The second defrost starts only when the outdoor pipe temperature falls below -6°C(21.2°F) after 35 minutes

passed from ending of the first defrost and more than 4 minutes operation of compressor.

Fuzzy Operation• When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed since

the operation off, the operation mode is selected.• When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and only

the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake airtemp at that moment as follows.24°C(75.2°F) ≤ Intake Air Temp Fuzzy Operation for Cooling21°C(69.8°F) ≤ Intake Air Temp<24°C(75.2°F) Fuzzy Operation for DehumidificationIntake Air Temp<21°C(69.8°F) Fuzzy Operation for Heating

• If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for 10sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.

1) Fuzzy Operation for Cooling

• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C(0.9°F) or morebelow the setting temp, the compressor is turned off. When 0.5°C(0.9°F) or more above the setting temp, thecompressor is turned on.Compressor ON Temp Setting Temp +0.5°C(0.9°F)Compressor OFF Temp Setting Temp + 0.5°C(0.9°F)

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.26°C(78.8°F)≤ Intake Air Temp 25°C(77°F)24°C(75.2°F)≤ Intake Air Temp<26°C(78.8°F) Intake Air Temp + 1°C(1.8°F)22°C(71.6°F)≤ Intake Air Temp<24°C(75.2°F) Intake Air Temp + 0.5°C(0.9°F)18°C(64.4°F)≤ Intake Air Temp<22°C(71.6°F) Intake Air TempIntake Air Temp<18°C(64.4°F) 18°C(64.4°F)

• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.

• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temper-ature.

Service Manual 43

2) Fuzzy Operation for Dehumidification• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C(0.9°F) or more

below the setting temp, the compressor is turned off. When 0.5°C(0.9°F) or more above the setting temp, thecompressor is turned on.Compressor ON Temp Setting Temp + 0.5°C(0.9°F)Compressor OFF Temp Setting Temp+0.5°C(0.9°F)

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.26°C(78.8°F) ≤ Intake Air Temp 25°C(77°F)24°C(75.2°F) ≤ Intake Air Temp<26°C(78.8°F) Intake Air Temp+1°C(1.8°F)22°C(71.6°F) ≤ Intake Air Temp<24°C(75.2°F) Intake Air Temp+0.5°C(0.9°F)18°C(64.4°F) ≤ Intake Air Temp<22°C(71.6°F) Intake Air TempIntake Air Temp<18°C(64.4°F) 18°C(64.4°F)


• While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or pause as indehumidification operation.

3) Fuzzy Operation for Heating

• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3°C(37.4°F) or moreabove the setting temp, the compressor is turned off. When below the setting temp, the compressor is turnedon.Compressor ON Temp Setting TempCompressor OFF Temp Setting Temp + 3°C(5.4°F)

• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.20°C(68°F)≤Intake Air Temp Intake Air Temp + 0.5°C(0.9°F)Intake Air Temp<20°C(68°F) 20°C(68°F)


• While in Fuzzy operation, the airflow speed of the indoor fan is set to the high or the medium according to theintake air temperature and the setting temperature.

Airflow Speed Selection• The airflow speed of the indoor fan is set to high, medium, low, or power (auto) by the input of the airflow

speed selection key on the remote control.

On-Timer Operation• When the set time is reached after the time is input by the remote control, the appliance starts to operate.• The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached.• If the appliance is operating at the time set by the timer, the operation continues.While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.

Off-Timer Operation• When the set time is reached after the time is input by the remote control, the appliance stops operating.• The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached.

Operation


Operation

• If the appliance is on pause at the time set by the timer, the pause continues. Off-Timer <=> On-Timer Operation

• When the set time is reached after the on/off time is input by the remote control, the on/off-timer operation iscarried out according to the set time.

Sleep Timer Operation• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote control while in appli-

ance operation, the operation of the appliance stops.• While the appliance is on pause, the sleep timer mode cannot be input.• While in cooling mode operation, 30 min later since the start of the sleep timer, the setting temperature

increases by 1°C(33.8°F). After another 30 min elapse, it increases by 1°C(1.8°F) again.• When the sleep timer mode is input while in cooling cycle mode, the airflow speed of the indoor fan is set to

the low.• When the sleep timer mode is input while in heating cycle mode, the airflow speed of the indoor fan is set to

the medium.

Chaos Swing Mode• By the Chaos Swing key input, the upper/lower vane automatically operates with the Chaos Swing or they are

fixed to the desired direction.• While in Chaos Swing mode, the angles of cooling and heating cycle operations are different.

Chaos Natural Wind Mode• When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the air-

flow mode is operated for 2~15 sec. randomly by the Chaos Simulation.

Jet Cool Mode Operation • While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in theother mode operation (cooling, dehumidification, ventilation), the Jet Cool mode is operated.• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C(64.4°F).• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then

operated in order that the air outflow could reach further.

Auto Restarting Operation• When the power is restored after a sudden power failure while in appliance operation, the mode before the

power failure is kept on the memory and the appliance automatically operates in the mode on the memory.

Service Manual 45

Forced Operation • To operate the appliance by force in case that the remote control is lost, the forced operation selection switch

is on the main unit of the appliance to operate the appliance in the standard conditions.• When the power is supplied while the slide switch is on the forced operation position, or when the slide switch

position is switched to the Auto Restarting (or test operation) position or switched from the remote controlposition to the forced operation position while the power is on, the forced operation is carried out.

• When the slide switch position is switched from the forced operation position to the Auto Restarting position orthe remote control position, the forced operation is canceled and the appliance stops operating.

• In the forced operation mode, the indoor fan is operated at low speed for around 15 sec and then the opera-tion condition is set according to the intake air temperature as follows.24°C(43.2°F)≤Intake Air Temp Cooling Mode Operation, 22°C(39.6°F), High Speed21°C(37.8°F)≤Intake Air Temp<24°C(43.2°F) Dehumidification Operation, 23°C(41.4°F), High SpeedIntake Air Temp<21°C(37.8°F) Heating Mode Operation, 24°C(43.2°F), High Speed

Buzzer Sounding Operation• When the appliance-operation key is input by the remote control, the short "beep-beep-" sounds.• When the appliance-pause key is input by the remote control, the long "beep—" sounds.

Operation


Operation

"Wall Mounted Type is standard"* Functions is dependent on model type.

Function of Indoor Unit

On/Off : Lights up during the system operation.

Sleep Mode : Lights up during Sleep Mode Auto operation.

Timer : Lights up during Timer operation.

Defrost ModeOutdoor unit operation

: Lights up during Defrost Mode or Hot Start operation (Heat pump model only)

: Lights up during outdoor unit operation.(Cooling model only)

Desire temperature For cooling,dehumidification,heating modes it display Destired temperatureindicator • Cooling : 18°C~30°C(64°F~86°F) • AI : Auto Operation

• Dehumidification : 18°C~30°C(64°F~86°F) • Po : Jet Cool• Heating : 16~30°C(60°F~86°F) • Lo : Test Mode

• Room temperature sensor. (THERMISTOR)

• Maintains the room temperature in accordance with the Setting Temp.

• Indoor fan is delayed for 5 seconds at the starting.

• Restarting is delayed for approx. 3 minutes.

• High, Med, Low, Chaos, Jet Cool

• Intermittent operation of fan at low speed.

• The fan is switched to low(Cooling), med(Heating) speed.• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

• The fan is switched to intermittent or irregular operation• The fan speed is automatically switched from high to low speed.

• The louver can be set at the desired position or swing up and down automatically.(Model base)

Split Type Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

Room temperature control

Starting Current Control

Time Delay Safety Control

Indoor Fan Speed Control

Operation indication Lamps (LED)

Soft Dry Operation Mode

• Both the indoor and outdoor fanstops during deicing.

• Hot start after deice ends.

• The indoor fan stops until the evaporator piping temperature willbe reached at 27°C(80.6°F).

Sleep Mode Auto Control

Natural Air Control by CHAOS Logic

* Airflow Direction Control

Deice (defrost) control (Heating)

Hot-start Control (Heating)

Service Manual 47

Function of Outdoor Unit

Outdoor Unit

Operating Step

LEV Control

Out door Fan Control

• Compressor step varies considering condition such as room temp,outdoor temp, operating room number,Temp gap between room temp and set temp and so on.

• LEV pulse is modulated to keep constant superheat or subcooling.

• Outdoor fan operates at High or Off to respond to the load condition.

R/Valve Control(Heating Model Only)

• Convert R/Valve to change cooling to heating, heating to cooling.

Defrost Function

• After 45 min heating operation, check the defrost condition and if outdoor pipe temp is below -5°C(23°F) and released from deice operation in case outdoor pipe temp is over 12°C(53.6°F) or 9 min cooing mode.

• To deice outdoor heat exchanger in low temp condtion, convert operating mode from heating to cooling mode.

Oil Return System

• In single(one) comp operation duration, another comp will operate for 30 seconds every 1 hours.

Comp Overload Protection

• To protect comp from being overload, protector will turn off the comp.

High Pressure Protction

• If cycle pressure is too high(around 36.7 kgf/cm2), it will turn off comp A

Operation


Operation

Remote Control Operation

ON OFF

CANCEL

AUTO CLEANSET

1

3

5

4

9

10

12

14

16

72

8

13

11

6

Cooling Operation

Auto Operation or Auto Changeover

Healthy Dehumidification Operation

Flip-up door(opened)

Heating Operation

Signal transmitter

• Cooling Model( ), Heat Pump Model( )

15

Operation Mode

The Remote Controller transmits the signals to the system.

1. START/STOP BUTTONOperation starts when this button is pressed and stops when the button is pressed again.

2. OPERATION MODE SELECTION BUTTONUsed to select the operation mode.

3. ROOM TEMPERATURE SETTING BUTTONSUsed to select the room temperature.

4. INDOOR FAN SPEED SELECTORUsed to select fan speed in four stepslow, medium, high and CHAOS.

5. JET COOLUsed to start or stop the speed cooling/heating.(speed cooling/heating operates super high fan speed.)

6. CHAOS SWING BUTTONUsed to stop or start louver movement and set the desired up/down airflow direction.

7. ON/OFF TIMER BUTTONSUsed to set the time of starting and stopping operation.

8. TIME SETTING BUTTONSUsed to adjust the time.

9. TIMER SET/CANCEL BUTTONUsed to set the timer when the desired time is obtainedand to cancel the Timer operation.

10. SLEEP MODE AUTO BUTTONUsed to set Sleep Mode Auto operation.

11. AIR CIRCULATION BUTTONUsed to circulate the room air without cooling or heating.

12. ROOM TEMPERATURE CHECKING BUTTONUsed to check the room temperature.

13. RESET BUTTONUsed prior to resetting time.

14. 2nd F ButtonUsed prior to using modes printed in blue at the bottom ofbuttons.

15. AUTO CLEANUsed to set Auto Clean mode.

16. ˚C TO ˚F SWITCHING BUTTONUsed to switch temperature reading from Centigrade toFahrenheit.

(Heat Pump) (Cooling Only)

Service Manual 49

Disassembly

DisassemblyIndoor Unit

Split Type Indoor Unit

Disconnect the unit from power supply before mak-ing any checks.Be sure the power switch is set to “OFF”.

To remove the Grille from the Chassis. • Set the up-and-down air discharge louver to open

position (horizontally) by finger pressure.• Remove the securing screws.• To remove the Grille, pull the lower left and right

side of the grille toward you (slightly tilted) and lift itstraight upward.

1. Before removing the control box, be sure totake out the wire screwed at the other end.

EarthConductor


Disassembly

2. To remove the Control Box.• Remove securing screws. • Pull the control box out from the chassis

carefully.

3. To remove the Discharge Grille.• Unhook the discharge grille and pull the

discharge grille out from the chassis carefully.

4. To remove the Evaporator. • Remove 3 screws securing the evaporator(at the

left 2EA in the Eva Holder, at the right 1EA).

Screw

• When repair, do not damage the Caution label.

Service Manual 51

• Unhook the tab on the right inside of the chassisat the same time, slightly pull the evaporatortoward you until the tab is clear of the slot.

5. To remove the Motor Cover• Remove 2 securing screw.• Pull the motor cover out from the chassis

carefully.

6. To remove the Cross-Flow Fan• Loosen the screw securing the cross-flow fan to

the fan motor (do not remove).• Lift up the right side of the cross-flow fan and the

fan motor, separate the fan motor from thecross-flow fan.

• Remove the left end of the cross-flow fan fromthe self-aligning bearing.

Motor cover

Bearing

Cross-flow fan

Disassembly


Disassembly

Schematic DiagramElectronic Control Device

1. Indoor Unit1) Split Type

Service Manual 53

2. Outdoor Unit

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2K

10K

R16K

3 21

8 4

20

8 4

75 6

R10K 1K

C02K

102

21

4

IC03

K

4

75 6

8

COM

(C)

DC 1

5V

Vm

(C)

Vm

(B)

DC 1

5V

DC 0

V

BD01

MD1

5XB6

0

DC 3

10V

RX(A

)

DC 1

5V

TX

(A)

DC 5

V

R13K 1K

1KR0

1K1K

R09K

10K

R07K

R05K

R11K

10K

C01K1K

102

8 4

75 6

10K

R06K

IC02

K

10K

R08K

8

R02K

R04

K

10K

R03K

IC01

K 231

8 4

20

COM

(A)

Vm

(A)

DC 1

5V

LIQ

UID

1

NF0

5M

1

1 1

4W

AY

32 4

32 4

3 14

3 1

CN-C

OM

3

4

4 1 2

4 1 2

CN-C

OM

2

2 31

CN-C

OM

1

2 31

Service Manual 55

1. Indoor Unit

Wiring Diagram

2. Outdoor Unit

1)A-MMH18FA-1 2) A-MMC24FA-1

Schematic Diagram


Schematic Diagram

3) A-MMH24FA-1 4) A-MMC36FA-1

5) A-MMH36FA-1

Service Manual 57

Schematic Diagram

1. Indoor UnitMAIN P.C.B ASM1) Split Type

Components Locations

• TOP VIEW

• BOTTOM VIEW

PCB :6870A90409BASSY:6871A20771

6871A20782


Schematic Diagram

2. Display ASSEMBLY1) Split Type (6871A20680)

Service Manual 59

Schematic Diagram

3. Outdoor Unit1) Component side


Schematic Diagram

2) Solder side

Service Manual 61

Troubleshooting Guide


Refrigeration Cycle Diagram

Refrigerant Flow

Cooling

Heating

Th1: Discharge thermistorTh2: Discharge thermistorTh3: Outdoor temperature thermistorTh4: Defrost thermistor

Field PipingGas

Field PipingLiquid

Room A

EEV-B

EEV-A

HeatExchanger

Header

OUTDOOR UNIT

Room BØ9.52

Room A

Room BØ6.35

Ø6.35

Ø9.52

Th2

High pressure S/W

Th3

Th4

Th1

Con

stan

tC

ompr

esso

r

Con

stan

tC

ompr

esso

r

Acc

umul

ator

Strainer

1. A-MMH18FA-1

Field PipingGas

Field PipingLiquid

Refrigerant Flow

Th1: Discharge thermistorTh2: Discharge thermistorTh3: Outdoor temperature thermistor

Room A

Cooling

EEV-B

EEV-A

HeatExchanger

Header

OUTDOOR UNIT

Room BØ9.52

Room A

Room BØ6.35

Ø6.35

Ø9.52

Th2

High pressure S/W

Th3

Th4

Th1

Co

nst

ant

Co

mp

ress

or

Co

nst

ant

Co

mp

ress

or

Acc

um

ula

tor

Strainer

Strainer

2. A-MMC24FA-1



Refrigerant Flow

Cooling

Heating


Field PipingGas

Field PipingLiquid

Room A

EEV-B

EEV-A

HeatExchanger

Header

OUTDOOR UNIT

Room BØ9.52

Room A

Room BØ6.35

Ø6.35

Ø9.52

Th2

High pressure S/W

Th3

Th4

Th1

Con

stan

tC

ompr

esso

r

Con

stan

tC

ompr

esso

r

Acc

umul

ator

Strainer

Strainer

3. A-MMH24FA-1

Field PipingGas

Field PipingLiquid

Refrigerant Flow

Th1: Discharge thermistorTh2: Discharge thermistorTh3: Outdoor temperature thermistor

Room A

Cooling

EEV-B

EEV-A

HeatExchanger

Header

OUTDOOR UNIT

Room BØ9.52

Room A

Room BØ6.35

Ø6.35

Ø6.35

Ø9.52

Room CØ9.52

Th2

High pressure S/W

Th3

Th1

EEV-CRoom C

Con

stan

tC

ompr

esso

r

Con

stan

tC

ompr

esso

r

Acc

umul

ator

4. A-MMC36FA-1

Service Manual 63


Refrigerant Flow

Cooling

Heating


Field PipingGas

Field PipingLiquid

Room A

EEV-B

EEV-A

HeatExchanger

Header

OUTDOOR UNIT

Room BØ9.52

Room A

Room BØ6.35

Ø6.35

Ø9.52

Room CØ9.52

Th2

High pressure S/W

Th3

Th4

Th1

EEV-CRoom C

Ø6.35

Con

stan

tC

ompr

esso

r

Con

stan

tC

ompr

esso

r

Acc

umul

ator

5. A-MMH36FA-1



Error Indicator

• The function is to self-diagnoisis airconditioner and express the troubles identifically if there is any trouble.• Error mark is ON/OFF for the operation LED of evaporator body in the same manner as the following table.• If more than two troubles occur simultaneously, primarily the highest trouble fo error code is expressed.• After error occurrence, if error is released, error LED is also released simultaneously.• To operate again on the occurrence of error code, be sure to turn off the power and then turn on.• Having or not of error code is different from Model.

Self-diagnosis Function

00 No Error ON

01 Indoor Room Thermistor Error 1 time OFF

02 Indoor In-Piping Error 2 times OFF

05 Communication Error between In and Out 5 times OFF

06 Indoor Out-Piping Error 6 times OFF

07 Differnt mode operation 7 times OFF

10 Indoor fan motor locked error 1 times OFF

Error code Description MPS Variable LED1 LED2 Indoor Status

33 D-Pipe High(Normal) 3 times 3 times OFF

44 Outdoor Air Thermistor Error(Open/Short) 4 times 4 times OFF

45 Cond Pipe Thermistor Error(Open/Short) 4 times 5 times OFF

47 Const. D-Pipe Thermistor Error(Open/Short) 4 times 7 times OFF

51 Capcity Error(High/Low) 5 times 1 times OFF

Error code Description MPS Variable LED1(Red) LED2(Green) Indoor Status

Indoor Error

Outdoor Error

LED1 LED2

Service Manual 65


Trouble analysis1. Check temperature difference between intake and discharge air, and operating current.

All amount of refrigerant leaked out. Check refrigeration cycle.

Refrigerant leakageClog of refrigeration cycleDefective compressor

Excessive amount of refrigerant

Normal

Notice:Temperature difference between intake and discharge air depends on room air humidity. When the room airhumidity is relatively higher, temperature difference is smaller. When the room air humidity is relatively lowertemperature difference is larger.

2. Check temperature and pressure of refrigeration cycle.

Notice:1. The suction pressure is usually 4.5~6.0 kg/cm2G at normal condition.2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with

putty.

Temp. difference : approx. 0°C(0°F)Current : less than 80% of

rated current

Temp. difference : approx. 8°C(14.4°F)Current : less than 80% of

rated current

Temp. difference : less than 8°C(14.4°F)Current : near the rated cur-

rent

Temp. difference : over 8°C(14.4°F)

Temp. Difference

Operating Current

Suction pressure Temperature(Compared with (Compared with Cause of Trouble Description

the normal value) the normal value)

High Defective compressor Current is low.

Normal Excessive amount of High pressure does not quickly refrigerant rise at the beginning of operation.

Insufficient amount of Current is low.Lower Higher refrigerant(Leakage)

Clogging

Higher

Cycle Troubleshooting Guide



Electronic Parts Troubleshooting Guide

Refer to electronic contorol device drawing & schematic diagram.

The Product doesn’t operate at all.

Turn off the main power and wait until LED on outdoor PCB is off.

Turn on the main power again.

Does "Beeping" sound is made from the indoor unit?

• Primarily, the operating condi-tion of Micom is O.K.

• Check CN-DISP1

Check the voltage of power(AC208V/AC230V, 60Hz).

• The voltage of main power.• The voltage applied to the unit.• The connecting method of Indoor/Outdoor connecting cable (each color)• The P.W.B. Ass'y(Fuse, Noise Filter, Power Transformer, IC01D, IC02D, etc.)

Trouble 1

NO YES

The operation check of the P.C.B. Ass'y

Procedure

1) The input voltage of power trans-former.

2) The output voltage of powertransformer.

3) IC01D(7812)

4) IC02D(7805)

5) IC01A(KIA7036)

Specification

1) AC230V ± 30V: Check the rated voltage

2) 15V ± 1.5V

3) DC12V

4) DC5V

5) The voltage of micom pin 29 : DC4.5V↑

Remedy

1) Replace power transfomer.

2) Replace power transfomer.

3) Replace IC01D.

4) Replace IC02D.

5) Replace IC01A.

Service Manual 67


Turn on main power.

While the compressor has been stopped, the compressor does not operate owing to the delaying function for 3 minutes after stopped.

When the compressor stopped Indoor Fan is driven by a low speed.At this point the wind speed is not controlled by the remote controller.

(When operated in the Sleeping Mode, the wind speed is set to the low speed as force.)

Caused by the remote controller. Caused by other parts except the remote controller

When the mark ( ) is displayed in LCDscreen, replace battery.

Check the contact of CN-DISP 1 connector

When the detect switch (double key) inside theremote controller door is fault, it is impossible tooperate temperature regulating( / ) and wind

speed selecting.

Check DISP PWB Ass'y -Voltage between CN1 ➀ - ➆ : DC +5V

Check the Display PWB Ass'y • Check receiver ass'y

Product doesn't operate with the remote controller.Trouble 2



Turn on the main power.

When in air circulation mode, compressor/outdoor fan is stopped.

Turn off main power.

Check the electrical wiring diagram of Outdoor side.Check the open or short of connecting wires between Indoor and Outdoor.

Check the sensor for Indoor temperature is attatched as close as to be effected by thethemperature of Heat Exchange (EVA.)

When the sensor circuit for Indoor temperature and connector are in bad connection or arenot engaged, Compressor/Outdoor fan is stopped.

• Check the related circuit of R01H(1K), R02H(1K), R03H(1K), R04H(1K), Micom(pin No. 74 ,

75 , 76 , 77 ).• Check the Indoor temperature sensor is disconnected or not (about 10K at 25°C).

Check the Relay(RY-PWR, RY-START) for driving Compressor.

• Check the voltage between brown and blue cable of terminal to connect the Outdoor(About AC208V / 230V).

• Check the related circuit of relay in Outdoor PCB Ass'y.

Operate Cooling Mode by setting the disired temperature of the remote controller is lessthan one of the Indoor temperature by 1°C at least.

The Compressor/Outdoor Fan are don't operateTrouble 3

Check Point

Between Micom(No. 50,51) andGND

DC 5V DC 0V

DC 12VDC 1V↓Between IC01M(No. 10) andGND

Comp. ON Comp. OFF

Service Manual 69


When indoor Fan does not operate.

Check connecting condition of the CN-MOTOR CON-NECTOR

Does the voltage of terminal of CN-DC/DC CONNECTOR inIndoor unit corresponds to the values in the table of page 56

Do the voltage of terminal ofCN-DC/DC CONNECTOR inOutdoor unit corresponds to thevalues in the table of page 56

Check the patterns and theconditions of outdoor unitPWB Assy's.

Check the connecting condi-tion and disconnection ofconnecting wires betweenIndoor and Outdoor unit.

Check the pattern and thecondition of Indoor unit PWBAss'y.

Check the interference of Indoor Fan.

Does the voltage of each terminals of CN-MOTOR CONNECTOR inIndoor unit corresponds to values in the Table of page 69

Check the motor of Indoor Fan

Indoor Fan may be stopped in the Soft Dry Mode(change to the Cooling Operation Mode).

Indoor Fan is to be stopped when Indoor pipe(coil) termperature is lower than 79°F.

(At that times, Defrost indicator is turned on)

NO YES

When indoor Fan does not operate.Trouble 4



When the louver does not operate.Trouble 5

When Vertical Louver does not operate.

• Confirm that the Vertical Louver is normally geared with the shaft ofStepping Motor.

• If the regular torque is detected when rotating the Vertical Louver withhands Normal

• Check the connecting condition of CN-UP/DOWN Connector• Check the soldering condition(on PWB) of CN-UP/DOWN Connector

Check the operating circuit of the Vertical Louver

• Confirm that there is DC +12V between pin (RED) of CN-UP/DOWN andGND.

• Confirm that there is a soldering short at following terminals.- Between 60 , 61 , 62 and 63 of MICOM- Between 2 , 3 , 4 and 5 of IC01M- Between 12 , 13 , 14 , 15 of IC01M- Between 1 , 2 , 3 , 4 and 5 of CN-UP/DOWN

If there are no problems after above checks

• Confirm the assembly conditions that are catching and interfering parts inthe rotation radial of the Vertical Louver

Service Manual 71


Error Code

Trouble Shooting

ErrorTitle Cause of error Check point & Normal conditioncode

01 Indoor air sensor

02 Indoor inlet pipe sensor

06 Indoor outlet pipe sensor

• Open / Short• Soldered poorly• Internal circuit error



Normal resistor : 10KΩ / at 25°C(77°F) (Unplugged)Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged)

Normal resistor : 5KΩ/ at 25°C(77°F) (Unplugged)Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged)


Ω

10KΩ 2.5Vdc

Check the resistance / voltage

V

Check Point

1. Unplug the sensor on Indoor unit PCB.

2. Estimate the resistance of each sensor

3. If the resistance of the sensor is 10KΩ/5KΩ at 25°C(77°F), then sensor is normal

4. If the resistance of the sensor is 0 KΩ or ∞, then sensor is abnormal. Change the sensor.

5. Plug the sensor on Indoor unit PCB and Power ON.

6. Estimate the voltage of each sensor.

7. If the voltage of the sensor is 2.5Vdc / at 25°C(77°F), then sensor is normal.

8. If the resistance of the sensor is 0 or 5Vdc, then sensor is abnormal. Repair or Change the PCB




05 / 53Communication (Indoor Outdoor) • Communication poorly

• Power input AC 230V.(Outdoor, Indoor)• The connector for transmission is disconnected.• The connecting wires are misconnected.• The GND 1,2 is not connected at main GND.• The communication line is shorted at GND.• Transmission circuit of outdoor PCB is abnormal.• Transmission circuit of indoor PCB is abnormal.

Check Point

1. Check the input power AC 230V.(Outdoor, Indoor)

2. Check the communication wires are correctly connected.

Adjust the connection of wire

Confirm the wire of "Live", "Neutral".

3. Check the resistance between communication line and GND.(Normal : Over 2MΩ)

4. Check the connector for communication is correctly connected.

5. Check the connection of GND1, GND2, and main GND.

6. If one indoor unit is operated normally, outdoor PCB is no problem.

Check the another indoor unit.

* CH05 is displayed at indoor unit, CH53 is displayed at outdoor unit.

Service Manual 73



33 D-Pipe Temp. High • Discharge sensortemp. high

• Check the discharge pipe sensor.• Check the install condition for over load.• Check the leakage of refrigerent.• Check the SVC V/V open.


51 Capacitor error • Over Capacitor com-bination

• Check the indoor unit capacity.• Check the combination table

Check Point

1. Check the indoor unit capacity.

2. Check the combination table.

In the tropical model case

single cycle has no error for over capacity.

Check Point

1. Check the install condition for over load.

2. Check the SVC V/V open.

3. Check the leakage of refrigerent.

4. Check the constant compressor.

COMP OFF

LEV OPEN(16PULSE/MIN)

LEV OPEN(10PULSE/MIN)

NORMAL

115°C(239°F)

100°C(212°F)

95°C(203°F)




44 Outdoor air sensor

45 Condensor pipe sensor

47 D-Pipe sensor




Normal resistor : 10KΩ / at 25°C(77°F) (Unplugged)Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged)



Check Point

1. Estimate the resistance of each sensor.(Unplugged)

2. Estimate the voltage of each sensor.(Plugged)

3. If the resistance is 0V or 5Vdc, then sensor is abnormal

Check the resistance

Ω

Ω

Service Manual 75

2-way, 3-way Valve

2-way, 3-way Valve

2-way Valve (Liguid Side) 3-way Valve (Gas Side)

Works Shaft position Shaft position Service port

Shipping Closed Closed Closed(with valve cap) (with valve cap) (with cap)

Air purging Open Closed Open(Installation) (counter-clockwise) (clockwise) (push-pin or with

vacuum pump)

Operation Open Open Closed(with valve cap) (with valve cap) (with cap)

Pumping down Closed Open Open(Transfering) (clockwise) (counter-clockwise) (connected

manifold gauge)

Evacuation Open Open Open(Servicing) (with charging

cylinder)

Gas charging Open Open Open(Servicing) (with charging

cylinder)

Pressure check Open Open Open(Servicing) (with charging

cylinder)

Gas releasing Open Open Open(Servicing) (with charging

cylinder)

3.

2.

1.

4.

5.

6.

Flare nut

To piping connection

Open positionClosed position

Flare nut

Valve cap

To piping connection

Open positionClosed position

Hexagonal wrench(4mm)

To outdoor unit

Pin

Service port

Service port cap

To outdoor unit


2-way, 3-way Valve

• Be sure to short pressure S/W. otherwise Low pressure S/W detect low pressure skete and stops the compressor.

(1) Pumping down

• Procedure1. Confirm that both the gas side and liquid side

valves are set to the open position.- Remove the valve stem caps and confirm that the

valve stems are in the raised position.

- Be sure to use a hexagonal wrench to operatethe valve stems.

2. Operate the unit for 10 to 15 minutes.

3. Stop operation and wait for 3 minutes, then con-nect the manifold gauge to the service port of thegas side valve.- Connect the hose of the gauge with the push pin

to the service port.

4. Air purging of the charge hose.- Open the Low-handle valve on the gauge

slightly to air purge from the hose.

5. Set the liquid side valve to the closed position.

6. Operate the air conditioner at the cooling cycleand stop it when the gauge indicates 1kg/cm2g.

7. Immediately set the gas side valve to the closedposition.- Do this quickly so that the gauge ends up indicat-

ing 1kg/ g.

8. Disconnect the charge set, and mount the liquidside and gas side valve caps and the service portnut.- Use torque wrench to tighten the service port nut to

a torque of 1.8kg.m.(156.2 lbf·in) [4.2kg.m (364.5lbf·in)/5.5kg.m (477.4 lbf·in)]

- Be sure to check for gas leakage.

Indoor unit

Outdoor unit

Liquid side

Close

Gas side

2-Wayvalve

Open3-Wayvalve

manifold gauge

Indoor unit Liquid side

Close

Gas side

2-Wayvalve

Open3-Wayvalve

Hi- handle(CLOSE)

Low-handle(CLOSE)

Service Manual 77

2-way, 3-way Valve

(2) Evacuation(All amount of refrigerant leaked)

• Procedure1. Confirm that both the liguid side valve and gas

side valve are set to the opened position.

2. Connect the vaccum pump to the center hose ofthe manifold gauge.

3. Connect the service port of the gas side valve tothe low side of the gauge.

4. Evacuation for approximately one hour.- Confirm that the gauge needle has moved

toward-76 cmHg (vacuum of 4 mmHg or less).

5. Close the Low handle of the gauge turn off thevacuum pump, and confirm that the gauge needledoes not move(approximately 5 minutes afterturning off the vacuum pump).

6. Disconnect the charge hose from the vacuumpump.- Vacuum pump oil.

If the vacuum pump oil becomes dirty or deplet-ed,replenish as needed.

7. Mount the valve caps and the service port caps.

Indoor unit

Outdoor unit

Liquid side

Open

Gas side

2-Wayvalve

Open3-Wayvalve

manifold gauge


Open

Gas side

2-Wayvalve

Open3-Wayvalve

Vacuum pump

Hi- handle(OPEN)

Low-handle(OPEN)


2-way, 3-way Valve

(3) Gas Charging(After Evacuation)

• Procedure1. Connect the gauge to the charging cylinder.

- Connect the charge hose which you disconnect-ed from the vacuum pump to the valve at thebottom of the cylinder.

- If you are using a gas cylinder, also use a scaleand reverse the cylinder so that the system canbe charged with liquid.

2. Purge the air from the charge hose.- Open the valve at the bottom of the cylinder and

press the check valve on the charge set to purgethe air. (Be careful of the liquid refrigerant). Theprocedure is the same if using a gas cylinder.

3. Open the low handle on the gauge and chargethe system with liquid refrigerant.- If the system can not be charged with the speci-

fied amount of refrigerant, it can be chargedwith a little at a time (approximately 150g eachtime) while operating the air conditioner in thecooling cycle; however, one time is not suffi-cient, wait approximately 1 minute and thenrepeat the procedure(pumping down-pin).

4. Immediately disconnect the charge hose fromthe gas side valve's service port.

- Stopping partway will allow the gas to be dis-charged.

- If the system has been charged with liquidrefrigerant while operating the air conditionerturn off the air conditioner before disconnectingthe hose.

5. Mount the valve stem nuts and the service portnut.- Use torque wrench to tighten the service port

nut to a torque of 1.8 kg.m.(4.2kg.m/5.5kg.m.)- Be sure to check for gas leakage.

manifold gaugeChargingcylinder

Hi- handle(OPEN)

Low-handle(OPEN)Check valve

Indoor unit

Outdoor unit

Liquid side

Open

Gas side

2-Wayvalve

Open3-Wayvalve


Open

Gas side

2-Wayvalve

Open3-Wayvalve

This is different from previous procedures.Because you are charging with liquid refrigerantfrom the gas side, absolutely do not attempt tocharge with larger amounts of liquid refrigerantwhile operating the air conditioner.

Service Manual 79

135301

152302B152302A

342800

567480B

Air inlet +Eva in

Eva out567480A

359011

131410 733010

135312

135311

147581

268711A

146811

147582

346810

13551635211B

354210

249951

352150

268711B

268711C267110

135500

152313

Exploded View & Replacement Parts List

Exploded View & Replacement Parts ListIndoor Unit

Model : B-MMC09FA-1, B-MMH09FA-1, B-MMC12FA-1, B-MMH12FA-1



Parts List (B-MMC09FA-1, B-MMH09FA-1, B-MMC12FA-1, B-MMH12FA-1)

PART No.

B-MMC09FA-1 B-MMH09FA-1 B-MMC12FA-1 B-MMH12FA-1

131410 CHASSIS ASSEMBLY 3141A20019K 3141A20019K 3141A20034R 3141A20034R R

135301 GRILLE,FRONT AEB32239106 AEB32239106 AEB32239315 AEB32239315 R

135311 GRILLE ASSEMBLY,DISCHARGE(INDOOR) 3531A11307P 3531A11307Q 3531A10362Z 3531A10362N R

135312 GRILLE ASSEMBLY,FRONT(INDOOR) AEB32794524 AEB32794524 AEB32857415 AEB32857415 R

135500 COVER 3550A30262E 3550A30262E 3550A30315F 3550A30315F R

135516 COVER ASSEMBLY,MOTOR 3551A20156B 3551A20156B 3551A20156B 3551A20156B R

146811 MOTOR ASSEMBLY,DC,STEPPING 4681A20055A 4681A20055A 4681A20055A 4681A20055A R

147581 LOUVER,HORIZONTAL 5990A20069D 5990A20069D 5990A20068E 5990A20068E R

152302A FILTER,AIR 5230A20051B 5230A20051B 5230A20064A 5230A20064A R

152302B FILTER,AIR 5230A20051D 5230A20051D 5230A20064A 5230A20064A R

152313 FILTER ASSEMBLY,DEODORIZER 5231A20040A 5231A20040A 5231A20040K 5231A20040K R

249951 CASE ASSEMBLY,CONTROL(INDOOR) 4995A20831A 4995A20831A 4995A20831A 4995A20831A R

267110 REMOTE CONTROLLER ASSEMBLY 6711A20128K 6711A20128L 6711A20128K 6711A20128L R

268711A PCB ASSEMBLY,DISPLAY 6871A20680F 6871A20680D 6871A20680F 6871A20680D R

268711B PCB ASSEMBLY,MAIN 6871A20782A 6871A20782A 6871A20782A 6871A20782A R

268711C PCB ASSEMBLY,SUB 6871A20989D 6871A20989A 6871A20989C 6871A20989B R

342800 BEARING 4280A20004A 4280A20004A 4280A20004A 4280A20004A R

346810 MOTOR ASSEMBLY,AC,INDOOR 4681AR2295L 4681AR2295L 4681AR2295L 4681AR2295L R

35211B TUBE ASSEMBLY,TUBING 5211A21363E 5211A21363E 5211A15008A 5211A15008A R

352150 HOSE ASSEMBLY,DRAIN 5251A20011B 5251A20011B 5251A20011G 5251A20011G R

354210 EVAPORATOR ASSEMBLY,FINAL 5421A20222C 5421A20222C 5421A20282A 5421A20282A R

359011 FAN ASSEMBLY,CROSS FLOW 5901A20017F 5901A20017F 5901A20017H 5901A20017H R

567480A THERMISTOR,NTC 6323AQ3226T 6323AQ3226T 6323AQ3226T 6323AQ3226T R

567480B THERMISTOR,NTC 6323A20004A 6323A20004A 6323A20004A 6323A20004A R

733010 PLATE ASSEMBLY,INSTALLATION 3301A20020C 3301A20020C 3301A20020A 3301A20020A R

DESCRIPTIONSVC

CODELOCATION

No.

Service Manual 81


4355

12

4353

01

4372

11

4304

11

5590

10

4479

10

5468

10

3496

00

5540

3113

7213

-2

1372

13-1

4353

0056

7480

-455

2112

5521

13

5484

90

4355

11-1

5522

03-1

5522

03-2

5522

03-1

5522

03-2

5541

60-1

5541

60-2

5614

11-1

5660

00H/

P sw

itch

5521

13-1

5521

14

5522

01

5614

11-2

6499

50

W0C

ZZ-2

W0C

ZZ-1

2687

11-6

5614

10-1

5674

80-5

Disc

harg

e

5521

16

4355

11-2

2687

11-4

5522

02

Model : A-MMH18FA-1Outdoor Unit



437211 PANEL ASSEMBLY,FRONT 3721A23001A R

137213-1 PANEL ASSEMBLY,SIDE 1A00201D R

137213-2 PANEL ASSEMBLY,SIDE 3A02284M R

435300 GRILLE,REAR 1A00207B R

435301 GRILLE,DISCHARGE 3530A20007B R

435512 COVER ASSEMBLY, TOP 3H03266L R

430410 BASE ASSEMBLY,OUTDOOR 3041AP2741G R

554031 CONDENSER, ASSEMBLY, BENDING 5403A20072L R

546810 MOTOR,UNCLASSIFIED 4681A20008E R

559010 FAN ASSSEMBLY,PROPELLER 1A00195B R

554160-1 COMPRESSORSET,KOREA(LEFT) 2520UGAK2AA(GK113KAA) R

554160-2 COMPRESSORSET,KOREA(RIGHT) 2520UGJK2AA(GK094KAA) R

447910 BARRIER ASSEMBLY,OUTDOOR 4791A30004K R

649950 CASE ASSEMBLY,CONTROL(OUTDOOR) ABQ34008701 R

268711-4 PCB ASSEMBLY,SUB 6871A20500B R

268711-6 PCB ASSEMBLY,MAIN 6871A20479G R

435511-2 COVER ASSEMBLY,CONTROL 3550AR2886C R

435511-1 PANEL SIDE 3720AR7035C R

WOCZZ-1 CAPACITOR,FILM BOX 2A00986G R

W0CZZ-2 CAPACITOR,FILM BOX 6120AR2194F R

548490 ACCUMULATOR ASSEMBLY AAB33905201 R

561410-1 SOLENOID(COIL ASSEMBLY,REVERSE) 3A02028Z R

561411-1 DRAWING ASSEMBLY(EEV COIL) 6877A200050A R

561411-2 DRAWING ASSEMBLY(EEV COIL) 6877A20050B R

552203-1 VALVE SERVICE(Ø9.52) 5220A20001K R

552203-2 VALVE SERVICE(Ø6.35) 2H02479J R

566000 SWITHCH PRESSURE 6600L000013 R

567480-5 THEMISTOR,NTC 6323A20023A R

567480-4 THEMISTOR,NTC 6323A20001N R

552113 TUBE ASSEMBLY CONDENSER(OUT) AJR33485101 R

552112 TUBE ASSEMBLY CONDENSER(IN) AJR33484101 R

552116 TUBE ASSEMBLY,REVERSE AJR33477701 R

552114 TUBE ASSEMBLY,DISCHARGE(OUTDOOR) AJR33477801 R

349600 MOTOR BRACKET 4960AP1361A R

552113-1 TUBE ASSEMBLY, CONDENSER(OUT) 5211A20927F R

552201 CHECK VALVE 5220A30004A R

552202 REVERSING VALVE 5220AR3228R R

A-MMH18FA-1

LOCATIONNo.

DESCRIPTION

Part No.SVC

CODE

Part List (A-MMH18FA-1)

Solenoid(Coil Assempy, Reverse) is only for heat pump model.

Service Manual 83


5484

90

5522

02

5614

10-1

Heat

pum

p typ

e

Heat

pum

p typ

e

6499

50-2

2687

11-6

2687

11-4

4355

11

5522

03-1

5522

03-2

5522

03-1

5522

03-2

5541

60-3

5541

60-5

Inte

rnal

OLP

Type

Inte

rnal

OLP

Type

5614

11-1

5522

00

5522

00

5674

80-4

Inlet

air

+ pip

e

2632

30-5

Disc

harg

e

W0C

CZ-1

3496

00

W0C

CZ-2

5540

30

4355

12

5590

10

4353

01

3494

80

5468

10-2

4479

10

4372

10

4304

1043

7211

5522

01-1

1372

13-2

1372

13-1

4353

00

5660

00L/

P s

witc

h

5521

13-1

5521

14

5521

16

5521

13-2

5521

12

5614

11-2

Model : A-MMC24FA-1, A-MMH24FA-1



437211 PANEL ASSEMBLY,FRONT(OUTDOOR) AGL32105601 AGL32105601 R349480 ORIFICE 4948A20005A 4948A20005A R437210 PANEL ASSEMBLY, FRONT(SUB) 1A00197C 1A00197C R

137213-1 PANEL ASSEMBLY, SIDE 1A00202F 1A00202F R137213-2 PANEL ASSEMBLY, SIDE 3A02284R 3A02284R R435300 GRILLE, REAR 1A00208H 1A00208H R435301 GRILLE, DISCHARGE 3530A20007J 3530A20007J R435512 COVER ASSEMBLY, TOP(OUTDOOR) 3551A30113C 3551A30113C R430410 BASE ASSEMBLY, OUTDOOR 3041AP2741G 3041AP2741G R554030 CONDENSER ASSEMBLY, FIRST 5403A20256A 5403A20022S R

546810-2 MOTOR, UNCLASSIFIED 4681A20008E 4681A20008E R559010 FAN ASSEMBLY, PROPELLER 1A00195B 1A00195B R

554160-3 COMPRESSOR SET, KOREA(LEFT) 2520UGHK2AA(GK141KAA) 2520UGHK2AA(GK141KAA) R554160-5 COMPRESSOR SET, KOREA(RIGHT) 2520UGJK2AA(GK094KAA) 2520UGJK2AA(GK094KAA) R447910 BARRIER ASSEMBLY, OUTDOOR 4791A30004H 4791A30004H R

649950-2 CASE ASSEMBLY, CONTROL(OUTDOOR) 4995A00002L 4995A00002L R268711-4 PCB ASSEMBLY, SUB 6871A20500B 6871A20500B R268711-6 PCB ASSEMBLY, MAIN 6871A20479D 6871A20479D R435511 COVER ASSEMBLY, CONTROL(OUTDOOR) 3551A10044P 3551A10044N R

WOCZZ-1 CAPACITOR, FILM,BOX 2A00986G 2A00986G RWOCZZ-2 CAPACITOR, FILM,BOX 6120AR2194F 6120AR2194F R

548490 ACCUMULATOR ASSEMBLY 4849A20084A 4849A20084A R561410-1 SOLENOID(COIL ASSEMBLY, REVERSE) 3A02028Z - R561411-1 DRAWING, ASSEMBLY(EEV COIL) 6877A20050A 6877A20050A R561411-2 DRAWING, ASSEMBLY(EEV COIL) 6877A20050B 6877A20050B R552203-1 VALVE, SERVICE(Ø9.52) 5220A20001K 5220A20001K R552203-2 VALVE, SERVICE(Ø6.35) 2H02479J 2H02479J R552202 VALVE, REVERSE 5220AR3228E - R

552201-1 VALVE, CHECK 5220A30004A 5220A30004A R566000 SWITCH, PRESSURE 6600L000013 6600L000013 R

567480-4 THERMISTOR, NTC 6323A20026A 6323A20026A R263230-5 THERMISTOR, NTC 6323A20001N 6323A20001N R552113-1 TUBE ASSEMBLY, CONDENSER(OUT) 5211A20927F 5211A20927F R552112 TUBE ASSEMBLY, CONDENSER(IN) 5211A16012A 5211A16012A R

552113-2 TUBE ASSEMBLY, CONDENSER(OUT) 5211A16013A 5211A16013A R552116 TUBE ASSEMBLY, REVERSE 5211A22711A - R552114 TUBE ASSEMBLY, DISCHARGE(OUTDOOR) 5211A22710A 5211A22710C RW5210D TUBE ASSEMBLY, SUCTION(OUTDOOR) - MJU39263501 R552200 VALVE, EXPANSION BODY 6140A90001K 6140A90001K R349600 BRACKET, MOTOR 1A00206B 1A00206B R

LocationNo. Description

Part No.


SVCCODE

Part List (A-MMC24FA-1, A-MMH24FA-1)

Solenoid(Coil Assempy, Reverse) is only for heat pump model.

Service Manual 85


5468

10

5468

10

3496

00

5521

13-1

5590

10

5590

10

5521

16

5522

03-1

5522

03-2

5541

60-2

Inte

rnal

OLP

type

5541

60-1

5675

02

5540

31

4479

10

4304

10

4355

12

4353

01

3494

80

4353

01

3494

80

4372

11

1372

13-2

1372

13-1

4353

00

5484

90

5521

12

5521

13

5521

14

5674

80-4

Air i

nlet+

Pipe W

6640

2632

30-5

Disc

harg

e

6499

50

6687

11-2

6687

11-1

W0C

ZZ-1

W0C

ZZ-2

4355

11

5614

10

5522

01

5522

02

5614

11-1

5522

00

5522

00

5522

00

5614

11-2

5614

11-3

Model : A-MMC36FA-1, A-MMH36FA-1



Part List (A-MMC36FA-1, A-MMH36FA-1)

Solenoid(Coil Assembly, Reverse) is only for heat pump model.

PART No.


435301 GRILLE,DISCHARGE 3530A20006G 3530A20006G R

435300 GRILLE,REAR 3530A10176B 3530A10176B R

263230-5 THERMISTOR, NTC 6323A20028A 6323A20028A R

567480-4 THERMISTOR, NTC 6323A20026A 6323A20026A R

430410 BASE ASSEMBLY, OUTDOOR 3041AP2741Q 3041AP2741Q R

435511 COVER ASSEMBLY,CONTROL(OUTDOOR) 3551A10044R 3551A10044Q R

435512 COVER ASSEMBLY,TOP(OUTDOOR) 3H03266H 3H03266H R

437211 PANEL ASSEMBLY,FRONT(OUTDOOR) 3721A10109C 3721A10109C R

447910 BARRIER ASSEMBLY,OUTDOOR 4791A10019B 4791A10019B R

546810 MOTOR ASSEMBLY,OUTDOOR 4681AR1392X 4681AR1392X R

548490 ACCUMULATOR ASSEMBLY(MECH) 4848A20006L 4848A20006L R

552112 TUBE ASSEMBLY,CONDENSER IN 5211A11010A 5211A11010A R

552113 TUBE ASSEMBLY, CONDENSER OUT 5211A12001A 5211A12001A R

552113-1 TUBE ASSEMBLY, CONDENSER(OUT) 5211A21155B 5211A21155B R

552116 TUBE ASSEMBLY, REVERSING AJR30839802 AJR30839801 R

552114 TUBE ASSEMBLY, DISCHARGE(OUTDOOR) AJR30834102 AJR30834101 R

554031 CONDENSER ASSEMBLY, BENDING 5403A20168A 5403A20168A R

559010 FAN ASSEMBLY, PROPELLER 5403A20168C 5901A10033A R

561410 COIL ASSEMBLY, REVERSING VALVE - 3A02028Z R

649950 CASE ASSEMBLY,CONTROL(OUTDOOR) 4995A00002M 4995A00002M R

668711-1 PWB(PCB) ASSEMBLY,MAIN(AC) 6871A20500B 6871A20500B R

668711-2 PWB(PCB) ASSEMBLY,MAIN(OUTDOOR) 6871A20479F 6871A20479F R

137213-1 PANEL ASSEMBLY, SIDE 3721A10110A 3721A10110A R

137213-2 PANEL ASSEMBLY, SIDE 3721A10111C 3721A10111C R

552203-1 VALVE,SERVICE 5220A20001K 5220A20001K R

552203-2 VALVE,SERVICE 2H02479J 2H02479J R

554160-1 COMPRESSOR 2520UGHK2AA 2520UGHK2AA R

554160-2 COMPRESSOR TBZ30111701 TBZ30111701 R

561411-1 DRAWING,ASSEMBLY(EEV COIL) 6877A20050A 6877A20050A R

561411-2 DRAWING,ASSEMBLY(EEV COIL) 6877A20050B 6877A20050B R

561411-3 DRAWING,ASSEMBLY(EEV COIL) 6877A20050C 6877A20050C R

W0CZZ-1 CAPACITOR,FILM,BOX 0CZZA20007Q 0CZZA20007Q R

W0CZZ-2 CAPACITOR,FILM,BOX 2H01451S 2H01451S R

567502 O.L.P 6750U-L048A 6750U-L048A R

552201 CHECK VALVE 5220A30004A 5220A30004A R

552202 REVERSING VALVE - 5220AR3228E R

552200 VALVE, EXPANSION BODY 6140A90001K 6140A90001K R

W6640 TERMINAL BLOCK 6640A90001U 6640A90001U R

349480 ORIFICE 4948A20001A 4948A20001A R

349600 BRACKET, MOTOR 4960A10012A 4960A10012A R

DESCRIPTIONSVC

CODELOCATION

No.

Specifications and performance data subject to change without notice.

HEAT CONTROLLER, INC.1900 WELLWORTH AVENUE • JACKSON, MICHIGAN 49203

THE QUALITY LEADER IN CONDITIONING AIR

P/No.:3828A20390X

Wall Mounted Multi-Split System Air Conditioning/Heat Pump

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