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Is Er-FF displayed?
Yes
Yes
Yes
Yes
Yes
Is the connection loose?
Reconnect
Housing
Main
PCB
WH
CON4
1
2
3
1
2
3
BK
PR
F-FAN
1
2
3
BK
RD
PR
Check fan motor
(Connector,
Frozen,Locked)
Is the feedback voltage
between pin2 and pin3 of
CON4 like as below?
(from motor to main board)
No
No
No
No
Wiring diagram
Feedback Voltages
Replace
Main PCB
Replace
Main PCB
Pin1 WH
Pin2 BK
Pin3 PR
Pin2 BK
Freezer Fan Voltages
Reset and
Enter the TEST 1 MODE
Is the output voltage between
pin1 and pin2 of
CON4 like as below?
Does the cold-air come out
of the top of the main duct?
Explain to the customer!
Freezer Fan Error
12 ~ 16 V
pin1 to pin2
RessultTest Point
RessultTest Point
1 ~ 4 Vpin2 to pin3