LG LS-J0762Y / S07LHN Service Manual ▷ View online
Pipe size(Diameter:Ø)
MAX.
Max
MODEL
Piping length
Elevation
Gas(inch)
Liquid(inch)
(m)
(m)
7k Btu Series(AC)
3/8"
1/4"
15
7
12k Btu Series(AC)
1/2"
1/4"
15
7
9k Btu Series(AC)
3/8"
1/4"
15
7
12k Btu Series(AC)
3/8"
1/4"
15
7
Refrigeration Cycle Diagram
-9-
INDOOR UNIT
OUTDOOR UNIT
HEAT
EXCHANGE
(EVAPORATOR)
EXCHANGE
(EVAPORATOR)
HEAT
EXCHANGE
(CONDENSER)
EXCHANGE
(CONDENSER)
COMPRESSOR
ACCUMU
LATOR
LATOR
GAS SIDE
3-WAY VALVE
LIQUID SIDE
2-WAY VALVE
CAPILLARY TUBE
COOLING
HEATING
REVERSING
VALVE
(Heating Model Only)
VALVE
(Heating Model Only)
Wiring Diagram
-10-
(1) Indoor Unit
Model: LS-_YL/UL Series
Model: LS-_NM/NN Series
(2) Outdoor Unit
CN-COIL2
CN-COIL1
REACTOR
CN-COMP
CN-FAN
WCN-NOISE1
TERMINAL
BLOCK
CN-4WAY
RY-
4WAY
4WAY
BR
BL
GN/YL
RD
RD BL
BR
BR
BL
FUSE
AC 250V/15A
GN/YL
RD
4WAY
VALVE
1(L)
2(N)
3
TO
INDOOR
UNIT
INDOOR
UNIT
MAIN PWB ASM
OUTDOOR WIRING DIAGRAM
3854A20051V
YL
YL
COMP-
RESSOR
YL
W(C)
V(R)
U(S)
BL RD
YL BL RD
SSR
COMPRESSOR
THERMISTOR
HEAT SINK
THERMISTOR
INTAKE/PIPE
THERMISTOR
CN-TH2
CN-TH1
WH
BK
BK
BK
GR
YL BL
RD
FAN
MOTOR
PO
WER
BR
BR
BL
RD
GN/YL
BL
1(L)
2(N)
3
MOTOR
CN-MOTOR
CN-TAB1
CN-A
C/DC
CN-A
C/DC
STEP
MOTOR
STEP
MOTOR
H.V.
ASM
RD AIR
CLEAN
(
PLASMA
)
SAFETY S/W1
SAFETY S/W2
BK
BK
BK
BK
BK
BK
BK
CN-U/D
CN-L/R
CN-DISP1
DISPLAY PWB ASM
INDOOR WIRING DIAGRAM
3854A20142G
SW(FORCE)
T/BLOCK
TO OUTDOOR UNIT
SSR
AC PWB ASM
DC PWB ASM
OR
BK
BR
4
RY-POWER
FUSE AC
250V T2A
250V T2A
3
YL
SH-CAPA
GN/YL
CN-DISP2
BR
BL
CN-TH
THERMISTOR
PO
WER
BR
BR
BL
RD
GN/YL
BL
1(L)
2(N)
3
MOTOR
CN-MOTOR
CN-TAB1
CN-A
C
/DC
CN-A
C
/DC
STEP
MOTOR
STEP
MOTOR
H.V.
ASM
RD AIR
CLEAN
(
PLASMA
)
SAFETY S/W1
SAFETY S/W2
BK
BK
BK
BK
BK
BK
BK
CN-U/D
CN-L/R
CN-DISP1
DISPLAY PWB ASM
INDOOR WIRING DIAGRAM
3854A20142V
SW(FORCE)
T/BLOCK
TO OUTDOOR UNIT
SSR
AC PWB ASM
DC PWB ASM
OR
BK
BR
4
RY-POWER
FUSE AC
250V T2A
250V T2A
3
YL
SH-CAPA
GN/YL
BR
BL
CN-TH
THERMISTOR
Operation Details
1. LED display of indoor unit
■
LS-_YL/UL Series
■
LS-_NM/NN Series
-11-
Operation
indicator
Shape of
display
Setting
temp.
Standard
Too hot
Hot
Cold
Too cold
Jet
(Cool, Heat)
Test
operation
Comfortable
A.I operation mode
Cooling
heating
dehumidifi-
cation
Energy save
in cooling
mode
Operation Indicator
Sleep Timer Indicator
Timer Indicator
Preheat Indicator
Setting Temp.
• On while in appliance operation, off while in appliance pause.
• Blinking(3sec off/0.5sec on) according to Error Code as long as the system mal-
• Blinking(3sec off/0.5sec on) according to Error Code as long as the system mal-
functions.
• On while in sleep timer mode, off when sleep timer cancel or appliance operation
pause.
• On while in timer mode(on/off), off when timer mode is completed or canceled.
• Off except when hot start during heating mode operation or while in defrost control.
• Cooling/heating/dehumidification mode : setting temperature from remote control
• Fuzzy operation mode : fuzzy key data(5sec on)
• Fuzzy operation mode : fuzzy key data(5sec on)
➔
AI
Operation Indicator
Power Saving Indicator
Timer Indicator
Preheat 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)
• Flashing while in disconnection or short in Thermistor. (3 sec off/0.5 sec on)
• On while in power saving cold mode, off when power saving cold cancel.
• On while in timer mode(on/off) and sleep timer mode (on), off when timer mode is
completed or canceled.
• Off except when hot start during heating mode operation or while in defrost control.
11.1 Sleep timer operation for cooling cycle
• While in cooling mode operation, 30 min. later since the start of the sleep timer, the setting temperature
increase by 1°C. After another 30min. elapse, it increases by 1°C again.
11.2 Sleep timer operation for heating cycle
• While in heating mode operation, 60 min. later since the start of the sleep timer, the setting temperature
decrease by 1°C. After another 60min. elapse, it decreases by 1°C again.
-20-
Setting temp. (˚C)
1.0˚C up
1.0˚C up
Cooling ON temp.
(Setting temp. +0.5˚C)
(Setting temp. +0.5˚C)
Cooling OFF temp.
(Setting temp. -0.5˚C)
(Setting temp. -0.5˚C)
0.5
1
Sleep time (hr)
Setting temp. (˚C)
Heating ON temp.
(Setting temp)
(Setting temp)
Heating OFF temp.
(Setting temp. +3.0˚C)
(Setting temp. +3.0˚C)
1
2
Sleep time (hr)
0.5˚C down
1.0˚C down
11. Sleep timer operation
• When the sleep time is reached after [1,2,3,4,5,6,7hr] is input by the remote control during the operation, the
operation of the appliance stops.
• When the appliance is on pause, the sleep timer mode cannot be input.
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