Samsung RF4287HAWP/XAA - If FAN Does Not Operate(Flex Room - FAN)

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TROUBLESHOOTING
- This refrigerator has BLDC FAN motor. BLDC motor is driven by DC10~12V
- When COMP ON, normally with F-FAN motor.
4-2-4. If FAN does not operate(Flex Room - FAN)
Start
Execute manual operation
No
Yes
Yes
No
Yes
Yes
No
No
Is COMPRESSOR ON ?
Is the Flex
Room temperature suitable for
the Fan working?
◆ Predicted Cause
① FAN-MOTOR troubles itself
② Bad wiring connections.
③ Wrong Input of the fan motor rotation pulse
Is the voltage between
CN79-"1"(Orange) and "3"(Blue)
(Black) around DC10~12V?
Does DC7~12V alternate
with below DC2V between CN79-
"1"(Orange) and "3"(Blue)
FAN works normally
Operation
temperature/ready
Replace MAIN PCB
Flex Room control temperature
Sort
Micom
(IC01)
Initial
power On
Heater
off
Working
heater
37℉
(3℃)
42℉
(6℃)
27℉
(-3℃)
32℉
(0℃)
Temperaure
☞ Checking method of Flex Zoon FAN Motor Voltage with the voltage
between CN79-"1"(Orange) and "3"(Blue) shall be less than DC10~12V
- Additional check if resistance values are different after measurement.
1) Flex Room - FAN
AW3 SM-EN 2011.3.31 2:56 PM 페 이 지 8 2 i n