LG LSC27914SB - Page 110

17) Poor Cooling in Freezer section
CHECKING FLOW RESULT & SERVICE ACTION
1) Unplug Damper Motor
2) Check the Damper Motor impedance.
9
10
NO.
1) Reset product.
2) Enter to TEST MODE 1 (press once TEST S/W
on Main PCB).
1) Reset the refrigerator.
2) Enter to TEST MODE 1 (Press TEST S/W once).
3) Check Voltage in CON 1.
4) Enter to TEST MODE 2 (Press TEST S/W once
again).
5) Check Voltage in CON 1.
6) Proceed with the action.
4
5
6
1 2 3
Result
Service Action
~
Change PCB
369 ~ 451Ù
Other
Change Damper
~
Change PCB
369 ~ 451Ù
Other
Change Damper
1 6
2
5
~
3
4
129.6~158.4Ù
Change PCB
Change Damper
Other
Result
Service Action
Change Main PCB
Below 10 V
Other
Go to Step 11
Change Fan Motor
0V or 5V
Other
Go to Step 11
~
a
b
~
b
c
~
b
c
~
a
b
3) Check Voltage in CON 6 as shown in the pictures.
Result
Service Action
Change Main PCB
110~127Vac
Other
Bad compressor,
Refrigerant leakage, tube
obstruction, etc.
(Please refer to cycle
troubleshooting)
0~5 Vac
TEST
MODE 1
TEST
MODE 2
Other
Change Main PCB
Bad compressor,
Refrigerant leakage, tube
obstruction, etc.
(Please refer to cycle
troubleshooting)
11
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