LG LS-K1860HL Service Manual ▷ View online
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R
S
C
F
H
C
COMP.
TO INDOOR UNIT
OUTDOOR WIRING DIAGRAM
MOTOR
FAN
BR
OPTION
PTC
CAPACITOR
YL
TP
RD
TERMINAL
BLOCK
BLOCK
3854AR2735F
BR(OR)
BR BL
BK
YL
GN/YL
GN/YL
GN/YL
1(L) 2(N)
(2) Outdoor Unit
1. LS-K1820/1860/1861/2420/2460/2621/2661CL/CM
2. LS-K1820/HL/HM
3854A90003K
OUTDOOR WIRING DIAGRAM
TO OUTDOOR UNIT
TERMINAL
BLOCK
BLOCK
CAPACITOR
PTC
BR
BL
RD
BK
GN/YL
GN/YL
BR
BL
RD
BK
GN/YL
1(L) 2(N)
3 4
COMP.
FAN
MOTOR
BR
H
C
F
R
S
C
RD
T / B 1
BR(OR)
BK
(RD)
YL
BK
YL
T / B 2
REVERSING
VALVE
3. LS-K1860/1861/2420/2460/2621/2661HL/HM
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3854A90003M
OUTDOOR WIRING DIAGRAM
TO OUTDOOR UNIT
TERMINAL
BLOCK
CAPACITOR
PTC
BR
BL
RD
BK
GN/YL
GN/YL
BR
BL
RD
BK
GN/YL
1(L) 2(N)
3 4
COMP.
FAN
MOTOR
BR
H
C
F
R
S
C
RD
RD
BR
T/B 3
T/B 4
HEATER
RD
T / B 1
BR(OR)
BK(RD)
BK(RD)
YL
BK
YL
T / B 2
REVERSING
VALVE
1. MAIN UNIT FUNCTION
• DISPLAY
1) Standard Model (simple LCD remote controller supplied)
Cooling Indicator
• On while in cooling mode operation, off while in dehumidification operation or appliance operation pause
• Flashing while in disconnection or short in Thermistor (3 sec off / 0.5 sec on)
Dehumidification Indicator
• On while in dehumidification operation, off while in cooling mode operation or appliance operation pause
Timer Indicator
• On while in off timer mode, off while in timer off or appliance operation pause
Comp. Running Indicator
• While in appliance operation, on while in outdoor unit compressor running, off while in compressor off
2) C/O Model (high quality LCD remote controller supplied)
Operation 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
Comp. Running Incidator
• While in appliance operation, on while in outdoor unit compressor running, off while in compressor off
3) H/P Model (high quality LCD remote controller supplied)
Operation 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°CC below the setting temp, the compressor and the outdoor fan
stop.
• When it reaches 0.5°C above the setting temp, they start to operate again.
Compressor ON Temp=> Setting Temp+0.5°C
Compressor OFF Temp => Setting Temp-0.5°C
• While in compressor running, operating with the airflow speed set by the remote controller. While in compressor
not running, operating with the low airflow speed regardless of the setting.
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Operation Details
Healthy Dehumidification Mode
• When the dehumidification operation input by the remote controller is received, the intake air temperature is
detected and the setting temp is automatically set according to the intake air temperature.
26°C
Intake Air Temp
=> 25°C
24°C
Intake Air Temp < 26°C => Intake Air Temp-1°C
18°C
Intake Air Temp < 24°C => Intake Air Temp-0.5°C
Intake Air Temp < 18°
=> 18°C
• While in compressor off, the indoor fan repeats low airflow speed and pause.
• 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
Compressor OFF Temp. => Setting Temp-0.5°C
• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.
Heating Mode Operation
• When the intake air temp reaches +3°Cabove 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
• While in compressor on, the indoor fan is off when the indoor pipe temp. is below 26®¨C , when above 28°C , it
operates with the low or setting airflow speed (while in sleep mode, with the medium airflow speed).
• While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C , when above 35°C , it
operates with the low airflow speed.
• If overloaded while in heating mode operation, in order to prevent the compressor from OLP operation, the out-
door fan is turned on/off according to the indoor pipe temp.
• While in defrost control, both of the indoor and outdoor fans are turned off.
Defrost Control (New Type Defrost Control)
• While in heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing,
reversed to cooling cycle to defrost the evaporator pipe of the outdoor unit.
• Defrost control is available 60 min. later since heating mode operation started, and it will not prolong over 12
min.
• Defrost control is carried out according to the following priority order while in heating mode operation.
1st priority : Defrost control is carried out according to the indoor pipe temp 60 min. later since heating mode
operation started.
2nd priority : The temp differences between the indoor pipe temp and the intake air temp 25 min. later (
∆
T1)
and 60 min. later (
∆
T2) since heating mode operation started are measured, then defrost control is
carried out according to the difference (
∆
T=
∆
T1-
∆
T2).
3rd priority : Defrost control is carried out according to the temp difference (
∆
TE=TE1-TE2) between the indoor
pipe temperatures of 25 min later (TE1) and 60 min later (TE2) after heating mode operation start-
ed.
ed.
• When the indoor pipe temp is 41°C or above, defrost control is not carried out even if the condition is one of the
defrost conditions above.
• While in defrost control, the compressor is on and the indoor fan, the outdoor fan, and the 4 way valve are off.
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