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Housing
Main PWB
CON4
5
6
7
4
5
6
Icing
FAN
4
5
6
BK
RD
PR
Icing Room Fan Error
Wiring diagram
Is Er-IF displayed?
Yes
Is the connection loose?
Reconnect
No
Yes
Is the feedback voltage
between pin6 and pin7 of
CON4 like as below?
(from motor to main board)
N0
Yes
No
10 ~ 16 V
pin5 To pin6
Result
Test Point
Pin7 BN
Pin6 BL
1 ~ 4 V
Pin6 To pin7
Result
Test Point
Pin6 BL
Pin5 RD
Icing Fan Voltages
Feedback Voltages
Yes
Reset and
Enter the TEST 1 MODE
Is the output voltage between
pin5 and pin6 of
CON4 like as below?
RD
BL
BN
Explain to the customer!
Check fan motor
(Connector,
Frozen,Locked)
and replace.
N0
Yes
Does the cold-air come out
of the side duct under the
Test1 Mode?
Replace
MAIN PWB
(Position No:
500A)
Replace
MAIN PWB
(Position No:
500A)
(Position
No : 407A)
Содержание 795.78733.804
Страница 24: ...5 CIRCUIT DIAGRAM 24 ...
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