LG L3UC482FA0 User 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

2Multi 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 Valve ....................................................................................................................................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 dedi-
cated 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 cir-
cuit and breaker.
• Improper wiring or installation may
cause fire or electric shock
Use the correctly rated break-
er or fuse.
• There is risk of fire or electric shock.

4Multi 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 re-
install 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 con-
tact 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 dam-
age to the product.
Be sure the installation area
does not deteriorate with age.
• If the base collapses, the air condition-
er 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, fail-
ure of the product, or electric shock.

Service Manual 5
Safety Precautions
Do not open the inlet grille of the product dur-
ing operation. (Do not touch the electrostatic
filter, if the unit is so equipped.)
• There is risk of physical injury, electric shock, or product fail-
ure.
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 com-
bustibles 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 discon-
nect the power supply cable.
• There is risk of electric shock or fire.
Gasolin

6Multi 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, sol-
vents, etc.
• There is risk of fire, electric shock, or
damage to the plastic parts of the prod-
uct.
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 oper-
ated.
• 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 fail-
ure 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

8Multi 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.* mm2
Interunit Cable No.* mm2
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.* mm2
Interunit Cable No.* mm2
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
WD
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
WD
H
WD
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
BA
4- WAY Valve
COMP
B
COMP
A
Accum.
C
4- WAY Valve
COMP
C
Accum.
Indoor Side Outdoor Side
BA
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
BA
4- WAY Valve
COMP
B
COMP
A
Accum.
C
D
4- WAY Valve
COMP
C
Accum.
Indoor Side Outdoor Side
BA
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
O7812 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 29 30 28 31
R01B,1M XIN
RESET' XOUT
25 26 23 24
R27
1SR139-600
D01K
R03K
IC02K(TLP627)
2
4
1
1K
3
1
4
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 36 35 37 34
Q01M
KRC107M
40 39 41 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
22
33
11
16 15 14 13
3 4 5
6
12 10
11
DC12V
50V
7 9 8
22 44 33 11
CN-TH
C01H C02H
OP5 XXXK
OP6 XXXK OP4
XXXK OP2
XXXK
OP3 XXXK OP1
XXXK
5V
R02H 12.1K 1%
R04H 1% 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 21 22 20 19
R50/Sin
17 18 16 15 10 13 12 11
6 9 8 7
R05 51
D5
R10 R07 R06 R14 R15 R13 R12
A4 A5 A3 A2
R11A1
D7 D6 A0
44 43 45 46 Q
D
48 47 49 50
S C
R35 R00 R37 R04 R03 R02 R36 R01D1
D4 D3 D2
HALT
BRK
D0
BRQ
55 52 53 54 59 56 57 58
MICOM GMS81516
C01M
50V
0.01
1 2 4 3
Vdd MP AVref AVss
R30 R33 R32
R/W
R31Wt
C RD 64
63 61 62
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
8 9 7 6
8 9 7 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
5Vss
6ORG
EEPROM
1 2
8VCC 7DU
R01T,10K
R03T,10K
R02T,10K
8 7
9 10
R11G,,6.8K
2 5 4 3
15 12 13 14
KRA1270Y
IC02M
KID65004AP
116
66
DC 12V
DC 5V
R05T,10K
R04T,10K
DC 5V
DC 5V
4 5 3 2
4 5 3 2
1 8 7
1 8 7
2 5 4 3
2
5 4 3
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 4 6 53
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
3 2 4 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
44 2 3
2 3
P12(INT2/TC1)
P20(INT5/STOP)
22 33 11 11
SW
Force
P32
LOUVER
FLOAT
LED4
P35
P34
P33
8.00MHZ
OSC01B
5VSS
XIN
LED3
LED2
LED1
XOUT
P31 P30 VSS XOUT XIN
NC
RESET
NC
S
Q4
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
8 7 6
VCC
DU
ORG
EERROM
1Q
C
D
C2
S
D3
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
1 2 3
1 2 3
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 32 31 30
REMO
26 28 27 25 24 21 23 22 19 20
3,7,8
NF01M
5V
+
ZNR01M
NF01M
SSR
8
5V
DC 12V
REMO 50/60Hz
13 16 17 18 15 14 12 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
16,7
GND
3
GND 3
CN_ZONE
36 33 34 35 39 37 38 40 41 44 42 43 45 46
7 8
Multi_RX Multi_TX
5V
12V
5V
6
5
2 4
3
GND
6
1
4
5
CS0
7 8CS1
6
5
SCK1 SI1
2 4
3
SO1
12V
5V PLC_SEL Multi_RX Multi_TX
6
1GND
4
5
CN-PIPE
CN-ROOM
CN_M C
ZD02D
57 52 48 49 47 50 51 53 54 55 56 60 58 59 61 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
131 3
R14K
1K
IC12K(TLP627)
14
3 41
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