LG LB-D1860HL Service Manual ▷ View online
Dimensions
(1) MODEL:LB-D1860HL
Indoor Unit
870
655
320
880
575
281
–6–
Outdoor Unit
Refrigeration Cycle Diagram
• MODEL: LB-D1860HL
(
§
Rated performance for refrigerant line length of: 5m)
For installation over rated distance, 40g of refrigerant should be added for each meter.
ex) When installed at a distance of 15m, 400g of refrigerant should be added.
(15-5) x 40g = 400g
Pipe size(Diameter: ø)
Piping length(m)
Elevation(m)
MODEL
Gas
Liquid
Rated
Max.
Rated
Max.
LB-D1860HL
5/8"
3/8"
5
15
5
8
40
INDOOR UNIT
OUTDOOR UNIT
HEAT
EXCHANGER
EXCHANGER
HEAT
EXCHANGER
EXCHANGER
COMPRESSOR
GAS SIDE
LIQUID SIDE
COOLING
HEATING
REVERSING
VALVE
VALVE
CHECK VALVE
CAPILLARY TUBE
–7–
Additional
refrigerant
(g/m)
Wiring Diagram
(1) MODEL: LB-D1860HL
• Indoor Unit
• Outdoor Unit
–8–
Hi Med Low
4
E
6
FMi
TRANS
WH
BL
BK
GN/YL
RD
OR
CN-TRANS2
PWB ASM
CN-POWER
CN-TRANS1 CN-MOTOR
R
Y
-F
AN
R
Y
-4W
A
Y
R
Y
-COMP
CN-OUT
5
3
4
E
6
8
3
DC-12V
SIGNAL
GND
CN-REMO
P/NO ; 3854A90008U
INDOOR ELECTRIC CIRCUIT
NOTE
BL
BK
BR
OR
BK
BR
OR
BLUE
BLACK
BROWN
ORANGE
BLACK
BROWN
ORANGE
:
:
:
:
:
:
:
RD
WH
WH
Y L
GN/YL
RED
WHITE
YELLOW
GREEN/YELLOW
WHITE
YELLOW
GREEN/YELLOW
:
:
:
:
:
:
:
4
8
1
2
6
L3 L2 L1
0
R
C
S
1(L) 2(N)
CAPACITOR
BL
RD
BL
BR
BL
BR
BL
BL
BK
BK
BL
BR
POWER
INPUT
1P,220-240V,50Hz
FUSE 5A
FUSE 5A
POWER
RELAY
RELAY
COMP
CAPACITOR
OUTDOOR UNIT
INDOOR UNIT
YL
OR
OR
BK
BL
BK
BR
BR
BK
BK
YL
BK
WH
BL
BL
GN/YL
GN/YL
WH
FAN
MOTOR
( RD
)
( YL
)
( BR
)
5
COi
GN/YL
Remo.
CN-TH
EVA
TH
ROOM
TH1
TH1
–9–
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.
COMP. ON
(SET TEMP.+0.5°C)
(SET TEMP.+0.5°C)
COMP. OFF
(SET TEMP. -0.5°C)
(SET TEMP. -0.5°C)
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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