- 42 -
Is Er-FF displayed?
Yes
Is the connection loose?
Reconnect
Housing
Main
PWB
WH
CON4
2
3
4
1
2
3
BK
PR
F-FAN
1
2
3
BK
RD
PR
Check fan motor
(Connector,
Frozen, Locked)
No
Yes
Is the feedback voltage
between pin3 and pin4 of
CON4 like as below?
(from motor to main board)
N0
Yes
No
pin4 PR
Pin3 BK
1 ~ 4 V
Pin3 To pin4
Result
Test Point
Wiring diagram
Feedbac k
Feedbac k
Feedbac k
Feedback Voltages
Voltages
Voltages
Voltages
Yes
Freezer Fan Error
N0
12 ~ 16 V
pin2 To pin3
Result
Test Point
Pin3 BK
Pin2 WH
Freezer Fan Voltages
Freezer Fan Voltages
Freezer Fan Voltages
Freezer Fan Voltages
Yes
Reset and
Enter the TEST 1 MODE
Is the output voltage between
pin2 and pin3 of
CON4 like as below?
Does the cold-air come out
of the top of the main duct
under Test1 mode ?
Explain to the customer!
Replace
MAIN PWB
(Position No:
500A)
Replace
MAIN PWB
(Position No:
500A)
CON4
CON4
and Replace
(Position No : 404A)