LG LB-H1860HL_CL / LB-H2460HL_CL / LB-G3680HL_CL Service Manual ▷ View online
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• COOLING ONLY (LB-H1860CL / LB-H2460CL / LB-G3680CL)
• Rated performance for refrigerant line length of: .7.5m
• If 18K Model is installed at a distance of 15m, 225g of refrigerant should be added (15-7.5)x30g=225g
• If 18K Model is installed at a distance of 15m, 225g of refrigerant should be added (15-7.5)x30g=225g
INDOOR UNIT
OUTDOOR UNIT
HEAT
EXCHANGER
(CONDENSER)
EXCHANGER
(CONDENSER)
HEAT
EXCHANGER
(CONDENSER)
EXCHANGER
(CONDENSER)
COMPRESSOR
GAS SIDE
LIQUID SIDE
CAPILLARY TUBE
LB-H1860CL
5/8"
1/4"
7.5
50
5
30
30
LB-H2460CL
5/8"
1/4"
7.5
50
5
30
35
LB-G3680CL
5/8"
1/4"
7.5
50
5
30
45
*Additional
refrigerant
(g/m)
Pipe size(Diameter: ø)
Piping length(m)
Elevation(m)
MODEL
Gas
Liquid
Rated
Max.
Rated
Max.
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Wiring Diagram
HEAT PUMP
Model : LB-H1860HL / LB-H2460HL
COOLING ONLY
Model : LB-H1860CL / LB-H2460CL
OUTDOOR WIRING DIAGRAM
INDOOR WIRING DIAGRAM
OUTDOOR WIRING DIAGRAM
INDOOR WIRING DIAGRAM
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HEAT PUMP
Model : LB-G3680HL
COOLING ONLY
Model : LB-G3680CL
OUTDOOR WIRING DIAGRAM
INDOOR WIRING DIAGRAM
OUTDOOR WIRING DIAGRAM
INDOOR WIRING DIAGRAM
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Operation Details
(1) The function of main control
1. Time Delay safety Control
• 3min... The compressor is ceased for 3minutes to balance the pressure in the refrigeration cycle.
(Protection of compressor)
• 30sec... The 4-way valve is ceased for 30sec. to prevent the refrigerant-gas abnormal noise when the Heating
operation is OFF or switched to the other operation mode while compress is off.
While compressor is running, it takes 3~5 seconds to switch.
2. Soft-Dry Operation
• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by Micom Control.
3. Cooling Mode Operation
• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote con-
troller and the operation diagram is as following.
Intake Air temp.
SET TEMP.+0.5°C
(COMP. ON)
SET TEMP. -0.5°C
(COMP. OFF)
More than
More than
3 minutes
3 minutes
Selecting
Selecting
Selecting
fan speed
fan speed
fan speed
COMPRESSOR
ON
OFF
ON OFF
ON
INDOOR FAN
Low Low
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