94
TROUBLESHOOTING
Yes
Voltage between Main PCB
GND and CN76 #8 is measured
about DC 2V, repeatly?
- This refrigerator uses the BLDC Fan Motor. The BLDC Motor operates with DC 7~12V.
- Under Comp On conditions, the R-Fan operates generally. But, when the ambient temperature is high or when you open and close
the Door once, it operates after one-minute delay. So, don't get misled by it. It is normal.
- When there is defect, turn on the Self-Diagnosis function and confirm the defect before turning off the unit.
Upon the initial power on, the Compressor and
the Freezer / Fridge / Comp Fans will run for
3 minutes regardless of operating conditions.
Start
Turn on Forced Operation.
Replace the Main PCB
Check after closing the Door
When there is door alarm sound,
repair the Door Switch Connector.
FAN works normal.
◆ Expected Causes
① Defective Fan-Motor
② Contact error at wire connection
③ When the Fan Motor operates, check the input of the Motor
Spinning Pulse.
Note
Pulse signal is generated at CN76 #8(CV), #9(F), #10(R) and #11(C)
when the Motor spins. This signal enters to MICOM and if there is no
signal entering when the motor spins, the Fan goes off and works
again in 10 seconds.
If there is still no signal entering, it repeats the above operation 4 more
times. If it keeps not sending the signal, the Motor operates in 10
minutes. This is a function to overcaome the case that there is a
restriction in the Motor due to foreign substances arount the Motor.
Apply power in 7 minutes after
turning off the power. (To prevent
Compressor overload)
Read with the Door closed :
Open – 5V, Closed – 0V
No
C-FAN
C-FAN
R-FAN
R-FAN
F-FAN
F-FAN
CV-FAN
CV-FAN
No
No
Yes
No
No
Yes
No
Yes
Yes
No
No
Yes
Yes
%0
How to check the F-Fan Voltage
-Measure voltage between MAIN PBA GND and CN76 #4.
-When it is between 8~12V, it is normal.
(Measure with the same method for R/CV/C-Fans.)
COMP is running?
Voltage between Main PCB
GND and CN76 #2 is
measured about DC8~12V?
Voltage between Main PCB
GND and CN76 #11 is measured
about DC 2V, repeatly?
Voltage between Main PCB
GND and CN76 #5 is
measured about DC8~12V?
Voltage between Main PCB
GND and CN76 #3 is
measured about DC8~12V?
Voltage between Main PCB
GND and CN76 #10 is measured
about DC 2V, repeatly?
Voltage between Main PCB
GND and CN76 #9 is measured
about DC 2V, repeatly?
Voltage between Main PCB
GND and CN76 #4 is measured
about DC8~12V?
Are the Freezer, the Fridge and
the Door Switches closed?
4-2-6. When the Fan does now operate(F, R, CV, C-FAN)
Summary of Contents for RF32FMQDBSR/AA, RF32FMQDBSR/AA
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