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Housing
Main PWB
CON4
4
5
6
4
5
6
Icing
FAN
4
5
6
BK
RD
PR
Wiring diagram
Is Er-IF displayed?
Yes
Yes
Yes
Yes
Yes
Is the connection loose?
Reconnect
Replace
Main PCB
Is the feedback voltage
between pin5 and pin6 of
CON4 like as below?
(from motor to main board)
N0
N0
N0
N0
Pin4 RD Pin4 BL
Pin5 BL
Pin6 BN
Icing Fan Voltages
Feedback Voltages
Replace
Main PCB
Reset and
Enter the TEST 1 MODE
Is the output voltage between
pin4 and pin5 of
CON4 like as below?
RD
BL
BN
Explain to the customer!
Check fan motor
(Connector,
Frozen,Locked)
Does the cold-air come out
of the side duct?
Icing Room Fan Error
12 ~ 16 V
pin4 to pin5
RessultTest Point
1 ~ 4 V
pin5 to pin6
RessultTest Point