LG LM-1966C2L_M / LM-1966H2L_M / LM-2166H2L_M / LM-2065C3L_M Service Manual ▷ View online
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1. LM-1966C2L/M (Cooling only model)
2. LM-1966H2L/M, LM-2166H2L/M (Cooling & Heating models)
Pipe Size (Diameter : inch)
Max.
piping length
(m)
Max.
piping elevation
(m)
Gas
Liquid
3/8"(1/2")
1/4"
10~15
5~7
ex)
A-UNIT
B-UNIT
CAPILLARY TUBE
LIQUID SIDE
2-WAY VALVE
GAS SIDE
3-WAY VALVE
HEAT
EXCHANGER
(EVAPORATOR)
EXCHANGER
(EVAPORATOR)
HEAT
EXCHANGER
(CONDENSER)
COMPRESSOR
B
COMPRESSOR
A
HEAT
EXCHANGER
EXCHANGER
COOLING
HEATING
DEICE
HEATING
DEICE
HEAT
EXCHANGER
CAPILLARY TUBE
COMPRESSOR-B
COMPRESSOR-A
CAPILLARY TUBE
2-WAY
VALVE
VALVE
4-WAY
VALVE
VALVE
B-UNIT
A-UNIT
3-WAY
VALVE
VALVE
4-WAY
VALVE
VALVE
Indoor Unit
Outdoor Unit
Capillary
Cooling & Deice
Heating
Refrigeration Cycle Diagram
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3. LM-2065C3L/M (Cooling only model)
Pipe Size (Diameter : inch)
Max.
piping length
(m)
Max.
piping elevation
(m)
Gas
Liquid
3/8"
1/4"
10~15
5~7
ex)
Solenoid Valve
Capillary
Cooling
Indoor Unit
Outdoor Unit
Heat
Exchanger
Exchanger
A-Unit
Heat
Exchanger
Exchanger
Comp-A
Comp-B
B-Unit
C-Unit
Heat
Exchanger
Exchanger
2- WAY
Valve
Valve
3- WAY
Valve
Valve
2- WAY
Valve
Valve
3- WAY
Valve
Valve
3854A20023D
INDOOR WIRING DIAGRAM
CN-DISP1
CN-U/D
FUSE
AC250V/T2A
CN-TH1
SSR
SH-CAPA.
BR
YL
OR
BK
CN-TAB1
ZNR
CN-MOTOR
THERMISTOR
FORCED
OPERATION
OPERATION
AUTO
RESTART
RESTART
REMOTE
CONTROL
CONTROL
STEP
MOTOR
MOTOR
MAIN PCB
ASM
DISPLAY PCB ASM
TO OUTDOOR UNIT
PILLAR
TERMINAL
TERMINAL
BR
BL
YL
GN/YL
1(L) 2(N)
3
RY-COMP.
4
3
3854A20023B
INDOOR WIRING DIAGRAM
CN-DISP1
CN-U/D
FUSE
AC250V/T2A
CN-TH
SSR
SH-CAPA.
BR
YL
OR
BK
CN-POWER
CN-FAN
ZNR
THERMISTOR
FORCED
OPERATION
OPERATION
AUTO
RESTART
RESTART
REMOTE
CONTROL
CONTROL
STEP
MOTOR
MOTOR
MAIN PCB
ASM
DISPLAY PCB ASM
TO OUTDOOR UNIT
PILLAR
TERMINAL
TERMINAL
BR
BL
YL
1(L) 2(N)
3
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Wiring Diagram(Indoor Unit)
1. LM-1966C2L/M
2. LM-1966H2L/M, LM-2166H2L/M, LM-2065C3L/M
BK
RD
R
C
O.L.P
BR
RD
WH
A-UNIT
TO INDOOR UNIT
OUTDOOR WIRING DIAGRAM
3854A20023A
B-UNIT
MAIN POWER
1(L) 2(N) 3 3 2(N) 1(L) 1(L) 2(N)
BK RD
BL
BL
BL
RD
POWER
RELAY
RELAY
OR
OR
MOTOR
YL
BK
O.L.P
T/B 3
T/B 4
T/B 1
T/B 2
C
R
FC
H
S
WH
BL
BR
BK
COMP
"B"
CAPACITOR
NO
NC
C
3
6
1
7
8
BK
WH
BK
BK
TERMINAL
BLOCK
GN/YL
GN/YL
S
COMP
"A"
YL
CAPACITOR
OUTDOOR WIRING DIAGRAM
3854AP3911C
MAIN PCB ASSY
TO INDOOR UNIT
A-UNIT
B-UNIT
MAIN
POWER
POWER
TERMINAL
BLOCK
BLOCK
CN-TRANS
BK
BK
BR
BL
BL
YL
BK
BK
BK
BK
BK
BK
OR
H
C
F
YL
BK
BK
"A"
COMP
BL
BK
RD
RD
S
R
C
OLP
C
R BR
BK
YL
S
BK
BK
T/B2
T/B1
T/B3
GN/YL
MOTOR
BK
7
4
3
3
1
1
3
2
1
5
3
1
3
1
BK
WH
WH
BK
GN/YL
GN/YL
WH
CN-COM
CN-TH1 CN-TH2
CN-POWER
CN-SV
RY
9
RY
3
RY
2
RY
1
R
Y10
CN-FAN
CN-COMP
CAPA.
CAP
A.
FUSE T3.15A
THERMISTOR
THERMISTOR
TRANS-
FORMER
FORMER
OLP
"B"
COMP
1(L)
1(L)
2(N)
1(L) 2(N)
2(N)
3
3
A 4-W
A
Y
B 4-W
A
Y
OPTION
BK
T/B1
BK
CAPA.
CAPA.
RY1
RY2
RY3
RY7
RY8
CN-TH2
CN-SV
CN-TH1
F
C
H
3
1
3
1
BK
BK
BL
BK
T/B2
BL
BL BL
WH
BR
BL
RD WH
GN/YL
TERMINAL
BLOCK
WH
BK
WH
BK
BK
BK
RD
BK
BK
BR
YL
YL
GN/YL
OR
RD
S
S
R
R
C
C
BK
RD
BL
CN-FAN
CN-COMP
BK
"B"
COMP
"A"
COMP
MOTOR
3
4
7
5
3
1
1
3
2
1
FUSE T3.15A
CN-POWER
CN-COM
MAIN PCB ASSY
CN-TRANS
TRANS-
FORMER
B S.V
C S.V
1(L) 2(N) 3 3 2(N) 1(L) 3 1(L) 2(N)
A-UNIT
B-UNIT
TO INDOOR UNIT
C-UNIT
MAIN
POWER
OUTDOOR WIRING DIAGRAM
3854A30076G
T/B3
OLP
OLP
- 14 -
Wiring Diagram(Outdoor Unit)
1. LM-1966C2L/M
2. LM-1966H2L/M, LM-2166H2L/M
3. LM-2065C3L/M
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