6-2. IF FAN does not operate
6. Self Diagnosis & Trouble Shooting
To do list
• The refrigerator of this model has BLDC FAN motor. BLDC motor is driven by DC 7~12V.
• On the normal condition of COMP ON, it operates together with F-FAN motor.
If door is opened and closed once at a high ambient temperature, it will be operated after 1 minute delay.
Therefore, you are advised not to taken it for an error.
• If there is a trouble, you should select the self-diagnostic function to check the trouble before power off.
Is COMPRESSOR ON ?
For C-FAN For R-FAN For F-FAN
Is the voltage between
MAIN PCB J23
JUMMPER and CN
76”5”(Sky - blue)
around DC7~12V?
Start
YES
NO
NO
Execute manual
operation
YES
NO
Is the external
temperature above
66.2
℉(19℃ )?
NO
Is the voltage between
MAIN PCB J23
JUMMPER and
CN76”4”(Orange)
around DC7~12V?
NO
Is the voltage between
MAIN PCB Ground
J23 JUMPER and CN
76-"12"(Purple)
around 0V?
YES
Is the voltage between
MAIN PCB J23
JUMMPER and
CN76 ”3”(Yellow)
around DC7~12V?
NO
Is the voltage between
MAIN PCB REG1
Heater Sink and
CN30#1 (Black)
around 4.5~5V?
YES
FAN work normally
Repair the connection
of Door switch
178
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