LG L3UH482FA0, L4UH602FA0, L3UC482NA1, L4UC602FA0, LMNC122LRL0 Service Manual

LG

Multi Type Air Conditioner

SERVICE MANUAL

LG

CAUTION

website http://www.lgservice.com
e-mail http://www.lgeservice.com/techsup.html

• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.

• ONLY FOR AUTHORIZED SERVICE PERSONNEL.

MODEL Cooling Model Heating Model

• Outdoor Unit: L3UC482FA0 L3UH482FA0
L3UC482NA1
L4UC602FA0 L4UH602FA0

• Indoor Unit: LMNC122LRL0 LMNH122LRL0
LMNC182LTL0 LMNH182LTL0
LMNC242LTL0 LMNH242LTL0
LMNC122LRA0 LMNH122LRA0
LMNC182LTA0 LMNG182LTA0
LMNC242LTA0 LMNH242LTA0
LMNC122BTG0 LMNH122BTG0
LMNC182BTG0 LMNH182BTG0
LMNC242BHA0 LMNH242BHA0
L3NC122NRA1
L3NC242NRA1

2 Multi Type Air Conditioner

Multi Type Air Conditioner Service Manual

TABLE OF CONTENTS

Safety Precautions......................................................................................................................................3

Details of LG Model Name..........................................................................................................................7

Product Specifications...............................................................................................................................8

Combination Table....................................................................................................................................12

Dimensions................................................................................................................................................15

Refrigeration Cycle Diagram....................................................................................................................17

Schematic Diagram...................................................................................................................................19

Functions...................................................................................................................................................24

Operation Details ......................................................................................................................................31

2-way, 3-way V alve....................................................................................................................................38

Cycle Troubleshooting Guide ..................................................................................................................42

Electronic Parts Troubleshooting Guide.................................................................................................44

Disassembly of the parts (Indoor unit) ...................................................................................................50

Exploded View & Replacement Parts List ..............................................................................................53

Service Manual 3

Safety Precautions

Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions must
be followed.

■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.

■ Meanings of symbol 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.

WARNING

■ Installation

Be sure not to do.

Be sure to follow the instruction.

Do not use a defective or
underrated circuit breaker.
Use this appliance on a dedi­cated circuit.

• There is risk of fire or electric shock.

Do not let the air conditioner
run for a long time when the
humidity is very high and a
door or a window is left open.

• Moisture may condense and wet or
damage furniture.

Always ground the product.

• There is risk of fire or electric shock.

Install the panel and the cover
of control box securely.

• There is risk of fire or electric shock.

Always install a dedicated cir­cuit and breaker.

• Improper wiring or installation may
cause fire or electric shock

Use the correctly rated break­er or fuse.

• There is risk of fire or electric shock.

4 Multi Type Air Conditioner

Safety Precautions

■ Operational

Do not modify or extend the
power cable.

• There is risk of fire or electric shock.

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

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

Be cautious when unpacking
and installing the product.

• Sharp edges could cause injury. Be
especially careful of the case edges
and the fins on the condenser and
evaporator.

For installation, always con­tact the dealer or an
Authorized Service Center.

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

Do not install the product on a
defective installation stand.

• It may cause injury, accident, or dam­age to the product.

Be sure the installation area
does not deteriorate with age.

• If the base collapses, the air condition­er could fall with it, causing property
damage, product failure, and personal
injury.

Do not touch(operate) the
product with wet hands.

• There is risk of fire or electrical shock.

Do not place a heater or other
appliances near the power
cable.

• There is risk of fire and electric shock.

Do allow water to run into
electric parts.

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

Service Manual 5

Safety Precautions

Do not open the inlet grille of the product dur­ing operation. (Do not touch the electrostatic
filter, if the unit is so equipped.)

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

Be cautious that water could not enter the
product.

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

Do not store or use flammable gas or com­bustibles near the product.

• There is risk of fire or failure of product.

If strange sounds, or smell or smoke comes
from product. Turn the breaker off or discon­nect the power supply cable.

• There is risk of electric shock or fire.

Gasolin

6 Multi Type Air Conditioner

■ Operational

Safety Precautions

Use two or more people to lift
and transport the product.

• Avoid personal injury.

Use a soft cloth to clean. Do
not use harsh detergents, sol­vents, etc.

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

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

• There is risk of personal injury.

Do not step on or put anyting on the product.
(outdoor units)

• There is risk of personal injury and failure of product.

Do not insert hands or other objects through
the air inlet or outlet while the product is oper­ated.

• There are sharp and moving parts that could cause personal
injury.

CAUTION

■ Installation

Wax

Thinner

check for gas (refrigerant)
leakage after installation or
repair of product.

• Low refrigerant levels may cause fail­ure of product.

Install the drain hose to
ensure that water is drained
away properly.

• A bad connection may cause water
leakage.

Keep level even when
installing the product.

• To avoid vibration or water leakage.

90°

Details of LG Model Name

Details of LG Model Name

Outdoor Unit

L4UH602FA0

A: Basic

4: One outdoor unit can connect with four indoor
units(Reference to combination table)

Max. No. of indoor units

Development Sequence

Function

F: Free joint multi

Multi Type

48: 48,000 Btu/h 60: 60,000 Btu/h

Capacity

C: Cooling only H: Heat pump

Model Type

U: Outdoor N: Indoor

Outdoor / Indoor

L: Changwon of korea / R22

Making place / Refrigerant

2: 220V / 60Hz / 1Ø

Electric Standard (Volts / Freq. / Phase)

LMNH242LTL0

Development Sequence

A: Basic L: Plasma

Function

L: Changwon of korea / R22

Making place / Refrigerant

Indoor Unit

T: ST chassis R: SR chassis

Chassis Type

L: SR/ST chassis L look

Type

2: 220V / 60Hz / 1Ø

Electric standard (Volts / Freq. /Phase)

12: 12,000 Btu/h 24: 24,000 Btu/h

Capacity

C: Cooling only H: Heat pump

Model Type

U: Outdoor N: Indoor

Outdoor / Indoor

M: Multi

Multi Type

Service Manual 7

8 Multi Type Air Conditioner

Product Specifications

Product Specifications

1. Outdoor

Notes:

1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB

- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB

- Interconnecting Piping Length 7.5m

- Level Difference of Zero.

2. Capacities are Net Capacities.

3. * : See Page "Combination Table"

Model

Cooling Capacity * kcal/h

W

Btu/h

Heating Capacity * kcal/h

W

Btu/h
Input * Cooling/Heating W
Running Current * Cooling/Heating A
Starting Current Cooling/Heating A
Power Supply Ø,V,Hz
Power Factor %
Compressor A Locked Rotor Amp. A
(TPS Cycle) Type

Quantity No
Model
Maker
Capacity kcal/h(Btu/h)
Motor Type
Motor Input W
Oil Type
Oil Charge cc

O.L.P Type(model name)
Compressor B Locked Rotor Amp. A
(Single Cycle) Type

Quantity No

Model

Maker

Capacity kcal/h(Btu/h)

Motor Type/Starting Type

Motor Input W

Oil Type

Oil Charge cc

O.L.P Type(model name)
Refrigerant Charge g(oz), type

Type

Control
Coil Tube Size (OD) inch(mm)

Fins per inch

No. of Rows & Column/No.
Fan Motor Output W

Model

No. of Poles

Input

Running Current A

Capacitor µF/Vac
Fan Type

No. Used / Diameter EA/inch(mm)

Discharge Side / Top

Speed rpm
Air Circulation CMM(CFM)
Noise Level(Sound Press,1m) dBA
SVC Valve Liquid inch(mm)

Gas inch(mm)
Drain(ID Ø)mm
Dimensions (W*H*D) inch(mm)
Net Weight kg(lbs)
Power Supply Cable No.* mm

2

Interunit Cable No.* mm

2

Max. Interunit Piping Total of Each Room m
Length For One Room m
Max. Installation Indoor Unit~Outdoor Unit m
Height Difference Indoor Unit~Indoor Unit m
Packing Dimension (W*H*D) inch(mm)
Stuffing Quantity Without S/Parts 20/40ft

L3UC482FA0 L3UH482FA0

3024~12096 3024~12096
3515~14067 3515~14067

12000~48000 12000~48000

- 3024~12096

- 3515~14067

- 12000~48000

1,460~5,360 1,460~5,360 / 1,540~5,640

6.8~24.7 6.8~24.7/ 7.1~26

--

1Ø, 220V, 60Hz 1Ø, 220V, 60Hz

98 98

35/26 35/26

Rotary Rotary

1/1 1/1

QJ208KAB/QK185KAF QJ208KAB/QK185KAF

LG/LG LG/LG

14650/12900 14650/12900

Single Phase Induction Motor / PSC Single Phase Induction Motor / PSC

1356/1205 1356/1205

ATMOS M60 or SUNISO 4GSI ATMOS M60 or SUNISO 4GSI

450/350 450/350

MRA98704~12026/MRA12070~12027 MRA98704~12026/MRA12070~12027

68 68

Rotary Rotary

11

QP348KD24B QP348KD24B

LG LG

25700 25700

Single Phase Induction Motor / PSC Single Phase Induction Motor / PSC

2424 2424

ATMOS M60 or SUNISO 4GSI ATMOS M60 or SUNISO 4GSI

700 700

Internal Internal

TPS Cycle : 1980(69.8) at 7.5m Single Cycle : 2140(75.5) at 7.5m TPS Cycle : 1980(69.8) at 7.5m Single Cycle : 2140(75.5) at 7.5m

R22 R22

L.E.V L.E.V

0.276(7.0) 0.276(7.0)
18 18

2R,36C 2R,36C

207 207

IC-13670 LG39F IC-13670 LG39F

66

340 340

1.5 1.5

6/400 6/400

Axial FAN Axial FAN

1/Ø20.7(526) 1/Ø20.7(526)

Top Discharge Top Discharge

1000 1000

80(2967) 80(2967)

60 60

1/4(6.35)*3EA 1/4(6.35)*3EA
1/2(12.7)*3EA 1/2(12.7)*3EA

--

28.0*32.6*27 (711 x 828 x 686) 28.0*32.6*27 (711 x 828 x 686)
120(264.5) 120(264.5)

3*4.5(Includes earth) 3*4.5(Includes earth)

4*0.75(Includes earth) 4*0.75(Includes earth)

50(TPS Cycle)+20(Single Cycle) 50(TPS Cycle)+20(Single Cycle)

30(TPS Cycle) 30(TPS Cycle)

30 15

7.5 7.5

33.5*35.0*30.1 (850 x 890 x 765) 33.5*35.0*30.1 (850 x 890 x 765)
40/84 40/84

Service Manual 9

Product Specifications

Model

Cooling Capacity * kcal/h

W

Btu/h

Heating Capacity * kcal/h

W

Btu/h
Input * Cooling/Heating W
Running Current * Cooling/Heating A
Starting Current Cooling/Heating A
Power Supply Ø,V,Hz
Power Factor %
Compressor A Locked Rotor Amp. A
(TPS Cycle) Type

Quantity No
Model
Maker
Capacity kcal/h(Btu/h)
Motor Type
Motor Input W
Oil Type
Oil Charge cc

O.L.P Type(model name)
Compressor B Locked Rotor Amp. A
(Single Cycle) Type

Quantity No

Model

Maker

Capacity kcal/h(Btu/h)

Motor Type/Starting Type

Motor Input W

Oil Type

Oil Charge cc

O.L.P Type(model name)
Refrigerant Charge g(oz), type

Type

Control
Coil Tube Size (OD) inch(mm)

Fins per inch

No. of Rows & Column/No.
Fan Motor Output W

Model

No. of Poles

Input

Running Current A

Capacitor µF/Vac
Fan Type

No. Used / Diameter EA/inch(mm)

Discharge Side / Top

Speed rpm
Air Circulation CMM(CFM)
Noise Level(Sound Press,1m) dBA
SVC Valve Liquid inch(mm)

Gas inch(mm)
Drain(ID Ø)mm
Dimensions (W*H*D) inch(mm)
Net Weight kg(lbs)
Power Supply Cable No.* mm

2

Interunit Cable No.* mm

2

Max. Interunit Piping Total of Each Room m
Length For One Room m
Max. Installation Indoor Unit~Outdoor Unit m
Height Difference Indoor Unit~Indoor Unit m
Packing Dimension (W*H*D) inch(mm)
Stuffing Quantity Without S/Parts 20/40ft

L4UC602FA0 L4UH602FA0

3024~15120 3024~15120
3515~17584 3515~17584

12000~60000 12000~60000

- 3024~15120

- 3515~17584

- 12000~60000

1350~6000 1350~6000/1500~6400

6.5~28.0 6.5~28.0/7.0~30.0

--

1Ø, 220V, 60Hz 1Ø, 220V, 60Hz

95 95

68/26 68/26

Rotary Rotary

1/1 1/1

QP348KCC/QK185KAF QP348KCC/QK185KAF

LG/LG LG/LG

25700/12900 25700/12900

Single Phase Induction Motor / PSC Single Phase Induction Motor / PSC

2424/1205 2424/1205

ATMOS M60 or SUNISO 4GSI ATMOS M60 or SUNISO 4GSI

700/350 700/350

Internal/External Internal/External

68 68

Rotary Rotary

11

QP348KCE QP348KCE

LG LG

25700 25700

Single Phase Induction Motor / PSC Single Phase Induction Motor / PSC

2424 2424

ATMOS M60 or SUNISO 4GSI ATMOS M60 or SUNISO 4GSI

1130 1130

Internal Internal

TPS Cycle : 2500(88.2) at 7.5m Single Cycle : 1900(67.0) at 7.5m TPS Cycle : 2500(88.2) at 7.5m Single Cycle : 1900(67.0) at 7.5m

R22 R22

L.E.V L.E.V

0.276(7.0) 0.276(7.0)
18 18

2R,36C 2R,36C

260 260

IC-13670 LG39G IC-13670 LG39G

66

143 143

0.77 0.77

6/400 6/400

Axial FAN Axial FAN

1/Ø20.7(526) 1/Ø20.7(526)

Top Discharge Top Discharge

1040/840 1040/840

85(3002) 85(3002)

65 65

1/4(6.35)*4EA 1/4(6.35)*4EA
1/2(12.7)*4EA 1/2(12.7)*4EA

--

28.0*32.6*27 (711 x 828 x 686) 28.0*32.6*27 (711 x 828 x 686)
130(286.6) 130(286.6)

3*8.4(Includes earth) 3*8.4(Includes earth)

4*0.75(Includes earth) 4*0.75(Includes earth)

50(TPS Cycle)+20(Single Cycle) 50(TPS Cycle)+20(Single Cycle)

20(TPS Cycle) 20(TPS Cycle)

30 15

7.5 7.5

33.5*35.0*30.1 (850 x 890 x 765) 33.5*35.0*30.1 (850 x 890 x 765)
40/84 40/84

Notes:

1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB

- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB

- Interconnecting Piping Length 7.5m

- Level Difference of Zero.

2. Capacities are Net Capacities.

3. * : See Page "Combination Table"

10 Multi Type Air Conditioner

Product Specifications

2. Indoor

Indoor Unit Type
Model
Nominal Cooling Capacity* kcal/h(W)

Btu/h

Nominal Heating Capacity* kcal/h(W)

Btu/h
Air Circulation H/M/L CMM(CFM)
External Static Pressure mmAq
Setting temperature range(cool/heat) °C
Fan motor Output W

Model
No. of Poles
Input W
Running Current A
Capacitor µF/Vac

Fan Type

No. Used / Diameter EA/inch(mm)

Fan RPM Cooling(H/M/L) rpm

Heating(H/M/L) rpm

Noise Level

H/M/L dBA

(Sound Press,1m)
Temperature controller
Coil Tube Size (OD) inch(mm)

Fins per inch

No. of Rows & Column
Dehumidification Rate l/h
Dimensions (W*H*D) 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 Without S/Parts 20/40ft

Wall Mounted

LMNC(H)122LRA0 LMNC(H)182LTA0 LMNC(H)242LTA0

3024(3516) 4536(5275) 6048/7032

12000 18000 24000

3024(3516) 4536(5275) 6048(7032)

12000 18000 24000

8.1(286) 12.3(435) 14.9(526)

---

18~30 / 16~30 18~30 / 16~30 18~30 / 16~30

10 15.7 35

IC8420LG*** IC8428LGB IC8420LG***

444

37 54 65.5

0.17 0.25 0.3

0.9 / 400 1.5/370 2.0 / 400

Cross Flow Fan Cross Flow Fan Cross Flow Fan

1/Ø43(87) 1/Ø43(87) 1/Ø43(87)

---

---

39/35/31 42/39/36 45/41/39

Thermistor Thermistor Thermistor

0.275(7) 0.275(7) 0.275(7)
20 20 20

2R,12C 2R,13C 2R,13C

1.4 2.2 2.9

35.4*11.2*6.1(900*285*156) 42.9*12.4*6.8 (1090*314*172) 42.9*12.4*6.8 (1090*314*172)
8(17.6) 12(26.5) 12(26.5)

1/4(6.35) 3/8(9.52) 3/8(9.52)
1/2(12.7) 5/8(15.88) 5/8(15.88)

16 16 16

38.4*14.6*9.2 (976 x 372 x 233) 45.9*15.3*10.0 (1165 x 388 x 255) 45.9*15.3*10.0 (1165 x 388 x 255)
340/720 270/540 270/540

1. * : See Page "Combination Table"

2. Due to our policy of innovation some specifications may be changed without notification.

Service Manual 11

Product Specifications

Indoor Unit Type
Model
Nominal Cooling Capacity* kcal/h(W)

Btu/h

Nominal Heating Capacity* kcal/h(W)

Btu/h
Air Circulation H/M/L CMM(CFM)
External Static Pressure mmAq
Setting temperature range(cool/heat) °C
Fan motor Output W

Model
No. of Poles
Input W
Running Current A
Capacitor µF/Vac

Fan Type

No. Used / Diameter EA/inch(mm)

Fan RPM Cooling(H/M/L) rpm

Heating(H/M/L) rpm

Noise Level

H/M/L dBA

(Sound Press,1m)
Temperature controller
Coil Tube Size (OD) inch(mm)

Fins per inch

No. of Rows & Column
Dehumidification Rate l/h
Dimensions (W*H*D) 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 Without S/Parts 20/40ft

Ceiling Duct

LMNC(H)122BTG0 LMNC(H)182BTG0 LMNC(H)242BHA0

3024(3516) 4536(5274) 6048(7032)

12000 18000 24000

3024(3516) 4516(5274) 6048(7032)

12000 18000 24000

10/9/8(352/317/282) 13.5/12/10(477/424/353) 20/18/16(706/636/565)

228

18~30 / 16~30 18~30 / 16~30 18~30 / 16~30

35 126 60

YDK110*** YSK110**** IC-13450LG**

444

68 126 140

0.31 0.58 0.8

2.5 / 400 2.5/370 6 / 370

Sirocco Fan Sirocco Fan Sirocco Fan

1/7.8(197) 2/7.8(197) 2/7.0(177)

- 1130/1030/960

- 1130/1030/960

37/34/31 38/36/34 37/35/33

Thermistor Thermistor Thermistor

0.276(7.0) 0.276(7.0) 0.276(7.0)
18 18 21

3R,12C 2R,12C 3R,10C

1.2 2 3

25.6*9.0*21.1(650*230*535) 39.4*11.8*21.1(1000*230*535) 34.6*10.2*17.7(880*260*450)
22(48.5) 29(63.9) 35(77.2)

1/4 (6.35) 1/4(6.35) 1/4(6.35)
3/8 (9.52) 1/2(12.7) 5/8(15.88)

22.6 25.4 22.6

29.9*24.9*11.8(760*626*300) 49.5*11.8*24.6(1258*300*625) 44.7*13.4*23.0(1135*340*585)
172/356 123/251 48/101

1. * : See Page "Combination Table"

2. Due to our policy of innovation some specifications may be changed without notification.

1 UNIT 12(S-RAC) 12 13000 13000 1460 6.8

12(DUCT) 12 12000 12000 1460 6.8

18(S-RAC) 18 18000 18000 2190 10.2

18(DUCT) 18 18000 18000 2190 10.2

24(S-RAC) 24 22000 22000 2600 12.1

24(DUCT) 24 24000 24000 2600 12.1

24(S-RAC) 24 22000 22000 2600 12.1

24(DUCT) 24 24000 24000 2600 12.1

2 UNIT 12(S-RAC) 12(S-RAC) 24 12500 12500 25000 2760 12.6

12(DUCT) 12(DUCT) 24 12000 12000 24000 2760 12.6

12(S-RAC) 24(S-RAC) 36 13000 22000 35000 4060 18.9

12(DUCT) 24(DUCT) 36 12000 24000 36000 4060 18.9

18(S-RAC) 24(S-RAC) 42 18000 22000 40000 4740 22.1

18(DUCT) 24(DUCT) 42 18000 24000 42000 4740 22.1

24(S-RAC) 24(S-RAC) 48 22000 22000 44000 5360 24.7

24(DUCT) 24(DUCT) 48 24000 24000 48000 5360 24.7

3 UNIT 12(S-RAC) 12(S-RAC) 24(S-RAC) 48 12500 12500 22000 47000 5360 24.7

12(DUCT) 12(DUCT) 24(DUCT) 48 12000 12000 24000 48000 5360 24.7

Indoor Unit Combination

Index(k Btu/h)

Capacity (Btu/h)

Input

(W)

Current

(A)

Unit-A Unit-B Unit-C Total

A B C Total

Operation

1 UNIT 12(S-RAC) 12 13000 13000 1460 6.8

12(DUCT) 12 12000 12000 1460 6.8

18(S-RAC) 18 18000 18000 2190 10.2

18(DUCT) 18 18000 18000 2190 10.2

24(S-RAC) 24 22000 22000 2600 12.1

24(DUCT) 24 24000 24000 2600 12.1

24(S-RAC) 24 22000 22000 2600 12.1

24(DUCT) 24 24000 24000 2600 12.1

2 UNIT 12(S-RAC) 12(S-RAC) 24 12500 12500 25000 2760 12.6

12(DUCT) 12(DUCT) 24 12000 12000 24000 2760 12.6

12(S-RAC) 24(S-RAC) 36 13000 22000 35000 4060 18.9

12(DUCT) 24(DUCT) 36 12000 24000 36000 4060 18.9

18(S-RAC) 24(S-RAC) 42 18000 22000 40000 4740 22.1

18(DUCT) 24(DUCT) 42 18000 24000 42000 4740 22.1

24(S-RAC) 24(S-RAC) 48 22000 22000 44000 5360 24.7

24(DUCT) 24(DUCT) 48 24000 24000 48000 5360 24.7

3 UNIT 12(S-RAC) 12(S-RAC) 24(S-RAC) 48 12500 12500 22000 47000 5360 24.7

12(DUCT) 12(DUCT) 24(DUCT) 48 12000 12000 24000 48000 5360 24.7

Indoor Unit Combination

Index(k Btu/h)

Capacity (Btu/h)

Input

(W)

Current

(A)

Unit-A Unit-B Unit-C Total

A B C Total

Operation

12 Multi Type Air Conditioner

Combination Table

Combination Table

1. L3UC(H)482FA0

Cooling

Heating

Service Manual 13

Combination Table

2. L3UC(H)602FA0

1 UNIT 12(S-RAC) 12 13000 13000 1460 6.8

12(DUCT) 12 12000 12000 1460 6.8

18(S-RAC) 18 18000 18000 2190 10.2

18(DUCT) 18 18000 18000 2190 10.2

24(S-RAC) 24 22000 22000 2600 12.1

24(DUCT) 24 24000 24000 2600 12.1

24(S-RAC) 24 22000 22000 2600 12.1

24(DUCT) 24 24000 24000 2600 12.1

2 UNIT 12(S-RAC) 12(S-RAC) 24 12500 12500 25000 2760 12.6

12(DUCT) 12(DUCT) 24 12000 12000 24000 2760 12.6

12(S-RAC) 24(S-RAC) 36 13000 22000 35000 4060 18.9

12(DUCT) 24(DUCT) 36 12000 24000 36000 4060 18.9

18(S-RAC) 18(S-RAC) 36 18000 18000 36000 4060 18.9

18(DUCT) 18(DUCT) 36 18000 18000 36000 4060 18.9

18(S-RAC) 24(S-RAC) 42 18000 22000 40000 4740 22.1

18(DUCT) 24(DUCT) 42 18000 24000 42000 4740 22.1

24(S-RAC) 24(S-RAC) 48 22000 22000 44000 5360 24.7

24(DUCT) 24(DUCT) 48 24000 24000 48000 5360 24.7

3 UNIT 12(S-RAC) 12(S-RAC) 12(S-RAC) 36 12500 12500 12500 37500 4060 18.9

12(DUCT) 12(DUCT) 12(DUCT) 36 12000 12000 12000 36000 4060 18.9

12(S-RAC) 12(S-RAC) 24(S-RAC) 48 12500 12500 22000 47000 5360 24.7

12(DUCT) 12(DUCT) 24(DUCT) 48 12000 12000 24000 48000 5360 24.7

12(S-RAC) 18(S-RAC) 24(S-RAC) 54 12500 18000 22000 52500 6030 27.8

12(DUCT) 18(DUCT) 24(DUCT) 54 12000 18000 24000 54000 6030 27.8

18(S-RAC) 18(S-RAC) 24(S-RAC) 60 18000 18000 22000 58000 6700 30.9

18(DUCT) 18(DUCT) 24(DUCT) 60 18000 18000 24000 60000 6700 30.9

12(S-RAC) 24(S-RAC) 24(S-RAC) 60 12500 22000 22000 56500 6700 30.9

12(DUCT) 24(DUCT) 24(DUCT) 60 12000 24000 24000 60000 6700 30.9

4 UNIT 12(S-RAC) 12(S-RAC) 12(S-RAC) 24(S-RAC) 60 12500 12500 13000 22000 60000 6700 30.9

12(DUCT) 12(DUCT) 12(DUCT) 24(DUCT) 60 12000 12000 12000 24000 60000 6700 30.9

Indoor Unit Combination

Index(k Btu/h)

Capacity (Btu/h)

Input

(W)

Current

(A)

Unit-A Unit-B Unit-C Unit-D Total

ABCDTotal

Operation

Cooling

Combination Table

14 Multi Type Air Conditioner

Heating

1 UNIT 12(S-RAC) 12 13000 13000 1460 6.8

12(DUCT) 12 12000 12000 1460 6.8

18(S-RAC) 18 18000 18000 2190 10.2

18(DUCT) 18 18000 18000 2190 10.2

24(S-RAC) 24 22000 22000 2600 12.1

24(DUCT) 24 24000 24000 2600 12.1

24(S-RAC) 24 22000 22000 2600 12.1

24(DUCT) 24 24000 24000 2600 12.1

2 UNIT 12(S-RAC) 12(S-RAC) 24 12500 12500 25000 2760 12.6

12(DUCT) 12(DUCT) 24 12000 12000 24000 2760 12.6

12(S-RAC) 24(S-RAC) 36 13000 22000 35000 4060 18.9

12(DUCT) 24(DUCT) 36 12000 24000 36000 4060 18.9

18(S-RAC) 18(S-RAC) 36 18000 18000 36000 4060 18.9

18(DUCT) 18(DUCT) 36 18000 18000 36000 4060 18.9

18(S-RAC) 24(S-RAC) 42 18000 22000 40000 4740 22.1

18(DUCT) 24(DUCT) 42 18000 24000 42000 4740 22.1

24(S-RAC) 24(S-RAC) 48 22000 22000 44000 5360 24.7

24(DUCT) 24(DUCT) 48 24000 24000 48000 5360 24.7

3 UNIT 12(S-RAC) 12(S-RAC) 12(S-RAC) 36 12500 12500 12500 37500 4060 18.9

12(DUCT) 12(DUCT) 12(DUCT) 36 12000 12000 12000 36000 4060 18.9

12(S-RAC) 12(S-RAC) 24(S-RAC) 48 12500 12500 22000 47000 5360 24.7

12(DUCT) 12(DUCT) 24(DUCT) 48 12000 12000 24000 48000 5360 24.7

12(S-RAC) 18(S-RAC) 24(S-RAC) 54 12500 18000 22000 52500 6030 27.8

12(DUCT) 18(DUCT) 24(DUCT) 54 12000 18000 24000 54000 6030 27.8

18(S-RAC) 18(S-RAC) 24(S-RAC) 60 18000 18000 22000 58000 6700 30.9

18(DUCT) 18(DUCT) 24(DUCT) 60 18000 18000 24000 60000 6700 30.9

12(S-RAC) 24(S-RAC) 24(S-RAC) 60 12500 22000 22000 56500 6700 30.9

12(DUCT) 24(DUCT) 24(DUCT) 60 12000 24000 24000 60000 6700 30.9

4 UNIT 12(S-RAC) 12(S-RAC) 12(S-RAC) 24(S-RAC) 60 12500 12500 13000 22000 60000 6700 30.9

12(DUCT) 12(DUCT) 12(DUCT) 24(DUCT) 60 12000 12000 12000 24000 60000 6700 30.9

Indoor Unit Combination

Index(k Btu/h)

Capacity (Btu/h)

Input

(W)

Current

(A)

Unit-A Unit-B Unit-C Unit-D Total

ABCDTotal

Operation

Service Manual 15

Dimensions

Dimensions

1. Indoor Unit

1. Split Type

2. Duct Type

Installation plate

D

H

W

W

H

D

BH BT/BT1

H

W

D

MODEL

DIM

W(mm) 708 1060 880

H(mm) 230 230 260
D(mm) 357 357 450

BT 12K BT1 18K BH 24K

MODEL

DIM

W(mm) 900 1080

H(mm) 285 314
D(mm) 156 182

SR 12K ST 18K/24K

16 Multi Type Air Conditioner

W mm 711
H mm 828
D mm 687

48K/60K Btu/h

MODEL

DIM

Dimensions

2. Outdoor Unit

H

W

D

H

W

D

48K 60K

Service Manual 17

Refrigeration Cycle Diagram

ex)

Solenoid Valve
L.E.V

Capillary

3-Way Valve
2-Way Valve

Indoor Side Outdoor Side

B

A

4- WAY Valve

COMP

B

COMP

A

Accum.

C

4- WAY Valve

COMP

C

Accum.

Indoor Side Outdoor Side

B

A

COMP

B

COMP

A

Accum.

C

COMP

C

Accum.

Refrigeration Cycle Diagram

1. L3UH482FA0

2. L3UC482FA0

18 Multi Type Air Conditioner

Refrigeration Cycle Diagram

3. A4UH602FA0

4. A4UC602FA0

ex)

Solenoid Valve
L.E.V

Capillary

3-Way Valve
2-Way Valve

Indoor Side Outdoor Side

B

A

4- WAY Valve

COMP

B

COMP

A

Accum.

C

D

4- WAY Valve

COMP

C

Accum.

Indoor Side Outdoor Side

B

A

COMP

B

COMP

A

Accum.

C

D

COMP

C

Accum.

Service Manual 19

Schematic Diagram

Schematic Diagram

Electronic Control Device

FREQUENCY

6171AQ3124C

POWER TRANS

R02A,4.7K

10uF/50V

R05C

4.7K
R04C,10K

FREQUENCY

R03C,20K

M

C02C

50V

0.015

KTC3198Y

Q01C

25V

C01C

0.01

DC 12V

DC 5V

R02E,20

R02C,4.7K

REMOCON

5V

5V

R02L,10K

BZ01E

18

17

KID65084AP

1

IC01M

2

C01L

50V

680pF

R01C,1K

R01L,1K

TX

RX

R01E,1K

IC01A

5V

KIA7036P

R05K

680

Q01K

0.1

0.01

25V 25V

50V

IC02D

7805

470uF

KRC102M

C03D

0.01

C04D

25V 16V

+

C06D

+

O

C05D

IC01D

470uF

O

7812

I

C02D

I

35V

C01D

2200uF

1SR139-600

+

D01D

1SR139-600

D02D-05D

D02K

25K,3W,1%

1SR139-600

R44/EC0

R45/EC2

R42/INT2

R41/INT1

R40/INT0

R43/INT3

R04K

10K

R01K

0.001

25V

CST-8.00MTW

OSC01B

C01K

DC 5V

32

R02K,1K

VSS

R03A,100

C02A

+

C01A

0.01

50V

R01A,1K

TX

RX

27

293028

31

R01B,1M

XIN

RESET'

XOUT

252623

24

R27

1SR139-600

D01K

R03K

IC02K(TLP627)

241

1K

314

IC01K(TLP621)

3 2

A16

14D271

ZNR01K

33

R20

R17

R16

R24

R25

R23

R22

R26

A11

A13

A14

A12

A15

R21

A7

A6

A10

A8

38

363537

34

Q01M

KRC107M

403941

42

YL

RD

OR

BL

PK

UP/DOWN

STEP MOTOR

ROOM-TH

PIPE-TH

R03H,1K

R01H,1K

0.01

5

44

5

DC 12V

CN-U/D

223311

161514

13

345

6

12

10

11

DC12V

50V

798

224433

11

CN-TH

C01H C02H

OP5

XXXK

OP6

XXXK

OP4

XXXK

OP2

XXXK

OP3

XXXK

OP1

XXXK

5V

R02H

12.1K

1%

R04H1%6.2K

R13H

12.1K

R15H

12.1K

R16H

12.1K

R14H

12.1K

R11H

12.1K

R12H

12.1K

C01F,0.01/50V

C02F,0.01/50V

R34

60

SYNC

5

R67/AN7

R66/AN6

R57/PWM1

R55/BUZ

R54/WDTO

R52/Sclk

R53/Srdy

R56/PWM0

R46/T10

R47/T30

R51/Sout

R62/AN2

R60/AN0

R61/AN1

R63/AN3

R64/AN4

R65/AN5

14

212220

19

R50/Sin

171816

1510131211

6 9 8

7

R05

51

D5

R10

R07

R06

R14

R15

R13

R12

A4A5A3

A2

R11A1

D7D6A0

444345

46

Q

D

484749

50

S

C

R35

R00

R37

R04

R03

R02

R36

R01D1

D4D3D2

HALT

BRKD0BRQ

555253

5459565758

MICOM

GMS81516

C01M

50V

0.01

1

2 4 3

Vdd

MP

AVref

AVss

R30

R33

R32

R/W

R31Wt

C

RD

64

636162

NEUTRAL

0.1, AC275V
C01J

ZNR01J

FUSE

INR14D471K

250V/T2A

SVC561D-14A

NF01J

LIVE

2

1

2

CN-POWER

1

1

3

1

COM

3

R01M,120,1/2W

NF01M

DC 12V

SSR-MOTOR

INR14D471K

C01M,0.1,AC275V

SSR-MOTOR

NF01M

ZNR01M

3

2

3

CN-FAN

2

CN-SUB

897

6

897

6

MOTOR

INDOOR

FAN

4

177

Q11G

R07G,220

R01G,220

R06G,220

R03G,220

R05G,220

R04G,220

R02G,220

11

6

4

3

5

Vss6ORG

EEPROM

1

2

8

VCC7DU

R01T,10K

R03T,10K

R02T,10K

8

7

9

10

R11G,,6.8K

254

3

151213

14

KRA1270Y

IC02M

KID65004AP

1

16

66

DC 12V

DC 5V

R05T,10K

R04T,10K

DC 5V

DC 5V

453

2

453

2

187
187

254

3

2

543

1

220uF

10V

CN-DISP1

1

CN-DISP2

R02F,10K

R03F,1K

R01F,1K

R14G,6.8K

R16G,6.8K

R12G,6.8K

R13G,6.8K

R15G,6.8K

KTA1270Y

Q12G

KTA1270Y

Q13G

5V

R04F,10K

C02L

DC 5V

REMOCON

3

4653

2

53

4

6

5

4

3

2

17

62

1

SLIDE S/W

1

2

REMO

1

PRE AMP

TFMS-

LED4

LED1

LED3

LED2

324

5

2380B

Vcc

ASSY

DISPLAY

7

6

GND

Vout

1. Indoor Unit

1) Split Type

20 Multi Type Air Conditioner

Schematic Diagram

2) Duct Type

11

4423

2

3

P12(INT2/TC1)

P20(INT5/STOP)

223311

11

SW

Force

P32

LOUVER

FLOAT

LED4

P35

P34

P33

8.00MHZ

OSC01B

5

VSS

XIN

LED3

LED2

LED1

XOUT

P31

P30

VSS

XOUT

XIN

NC

RESET

NC

S

Q

4

GND

P21(XTIN)

RESET

P22(XTOUT)

TEST

KIA7036P

1

22

33

11

2

3

1

3

1

3

1

3

1

3

33

55

11

REMO

FREQ

PHASE

876

VCC

DU

ORG

EERROM

1

QCD

C

2

S

D

3

P15(TC2)

P16

P17

P14(PPG)

P13(DVO)

P10(INT0)

P11(INT1)

P07

P06

P05

LOW

HIGH

STEP M5

MED

LOUVER

D/PUMP

STEP M2

STEP M3

P04

P03

P01

P00

P02

P76

P77

NC

CSO

CSI

NC

NC

NC

SB1

SB2

SO1/PLC

SB0

CC RX

CC TX

SI1/MULTI TX

SCK1/MULTI RX

(SO1)/P44

(SCK2)/P45

(SI2)/P46

(SCK)/P42

(SI1)/P43

(PWM/PDO)/P52

(SO2)/P47

(INT3/TC3)/P50

(INT4/TC4)/P51

P53

유선_RX

(AIN7)/P67

OPTION5

OPTION4

OPTION3

OPTION2

PIPE TH

ROOM TH

OPTION 1

SB3

(AIN2)/P62

VASS

VARF

(AIN0)/P60

(AIN1)/P61

P54

(AIN3)/P63

(AIN5)/P65

(AIN6)/P66

(AIN4)/P64

OUTFAN

4WAY

HEATER

A/C

COMP

STEP M4

OPTION6

P71

VDD

P70

P72

P73

P75

P74

유선_TX

CN-REMO

123
123

Multi_TX

Multi_RX

681

C05D

IC02D(TLP521)

470uF/35V

103/250VA

C04D

5V

DISPLAY

PRE AMP

TFMS-2380B

LED4

LED3

LED2

Vcc

GND

Vout

LED1

77

6

5

4

6

5

4

11

3

2

3

2

5V

29

323130

REMO

26282725242123

221920

3,7,8

NF01M

5V

+

ZNR01M

NF01M

SSR

8

5V

DC 12V

REMO

50/60Hz

13

16

1718151412

11

9

10

DC 12V

STEP M

STEP M

STEP M

DC 12V

IC02M

KID65004AF

5

6

7

3

4

103

1

2

100nF

C02J

275V

3

1

3

1

2 2

M_RTX

275V

AC_L

C03J

10nF

275V

3

100nF

C01J

NF

4

ZNR01J

INR14D561K

T3.15A,3A

250V/

22mH/3A

1

NF01J

2

DC310V

ZD01D

P6KE200A

NTC01D

10D-9

C01D

10uF/

400V

AC_N

1N4007

1M,1/2W

R01J

D01D

D03D

C03D

UF4005

TNY255P

IC01D

5

TNY

255P

2

S

1

4

D02D

3

D

BP

EN

4,5

UF5402

S/Trans

1

6,7

GND

3

GND

3

CN_ZONE

36

33343539373840

4144424345

46

7

8

Multi_RX

Multi_TX

5V

12V

5V

6

5

2

4

3

GND

6

1

4

5

CS0

7

8

CS1

6

5

SCK1

SI1

2

4

3

SO1

12V

5V

PLC_SEL

Multi_RX

Multi_TX

6

1

GND

4

5

CN-PIPE

CN-ROOM

CN_M C

ZD02D

57

52

484947

5051535455

5660585961

62

11V

64

63

STEP M

KID65004AF

IC02M

DC 12V

12V

5V

1

2

1 3 1 3

82K/3W

R15K

104

C08D

3.3uH

R04D

R03D

150

C06D

39

330uF/35V

C07D

12V

L01D

103/1KV

223/1KV

G

C12D

C11D

103

C10D

220uF/50V

C09D

IC03D

7805

KID78L05BP

I O

5V

M_RTX

1SR139-400

D12K

M_RTX

1SR139-400

D11K

1.5K

R13K

DC 5V

1

2

12V

5V

1 31 3

R14K

1K

IC12K(TLP627)

14

3

4

1

2

IC11K(TLP621)

23

DC 5V

R12K,1K

C11K

102

R11K

10K

DC 5V

10K

R16K

IC01M

KID65004AF

3.6V

C01A

CN-DISP

5V

CN-LOUVER

CN-FLOAT

103

C02F

R02F

1K

103

C01F

R01F

1K

1K

R04L

R05L

R06L

1K

1K

102

R03L

1K

3.3uF

/50V

1.0M

R01B

1K

R02L

R01L

10K

R02A

IC01A

FAN

MOTOR

CN-MOTOR2

FAN

 壤

MOTOR

R01A 1K

C02A

10K

RY-M

RY-H

RY-L

CN-D/PUMP

Drain

Motor

Louver

Motor

CN-LOUVER

CN-MOTOR1

RY-OUTFAN

RY-4WAY

RY-HEATER

CN-OUT

RY-LOUV

RY-D/PUMP

RY-4WAY

RY-HEATER

RY-OUTFAN

C02L

BZ01E

1K

R01E

R02E

20

681

RY-COMP

NEUTRAL

SIGNAL

CN-POWER

LIVE

유선_TX

유선_RX

S_B0

중앙_RX

중앙_TX

S_B2

S_B1

R01U

10K

103

C02U

1K

AC_N

200K/2W

R01C

AC_L

R02C

C01K

102

5V

1K

R01K

R05C

C01C

103

1K

C03K

102

DAN212K

KRC104M

R03C

10K

IC01C

5V

R04C

4.7K

C02K

Q02K

102

12V

Q04K

KRA104M

Q01C

10K

R06C

5V

50/60Hz

D02K

5V

GND

S_B3

5V

OR1OR4OR6 OR5 OR2OR3

103

C01H

103

C02H

103

C01U

12.1K

R03H

1%

12.1K

R08H

1%

12.1K

R07H

1%

12.1K

R06H

1%

12.1K

R04H

1%

12.1K

R05H

1%

5V

6.2K

R02H

1%

1%

12.1K

R01H

Q11K

KRA104M

Q01K

5V

KRC104M

C05K

C06K

103

DAN212K 100nH

Q03K

KRC104M

12V

4.7K

104

C04K

R02K

D01K

L01K

L02K

L03K

GND

DC12V

Signal

TX

RX