LG LTCS20020 Series Service Manual page 44

10) Cooling BLDC FAN Motor Error
No
1 Push the TEST Mode Check the
loose connection
Input Test 1 Mode.
(push the button 1 times)
Check the Fan motor rotate in machine
2
room. (While an error code is displayed,
the fan is not working)
3 C h e c k h t e F
Check the FAN Motor Voltage in wires
4
Red to Black.
Check the FAN Motor Feedback Voltage
5
in wires Black to Purple.
COLD
Checking flow
a n m o o t . r
COLDEST
Result & SVC Action
Status
airflow
No airflow
R o a t e t a f n u s n i
It feel stuck or locked up, change the
motor.
8~15 Vdc
Below 1V or 16V
Status
1~4 Vdc
Other
44
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Only training and service purposes.
SVC Action
Go to the 4
Go to the 3
g y o r u h a n . d
SVC Action
Normal
Change the PCB
SVC Action
Normal
Change the PCB
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