Troubleshooting
TEST MODE 1 Voltage [V]
CON3
5
nd
pin ~ 6
th
pin
0V
Defrost Heater Error
( FdH)
1
Replace the
Door gasket
Check the Door gasket .
Is door gasket damaged?
Yes
No
2
Check the Defrost control part.
(1) Is Fuse-M resistance 0 ?
(2) Is Defrost Heater resistance
48~54
No
Yes
Change
Fuse-M
4
Check the Heater Voltage.
Is voltage 112~116V?
Yes
3
Check the Defrost control part.
Is Defrost Sensor resistance
22k
or OFF?
OFF
22kΩ
Replace
product
Input Test 2 Mode
(Push the button 2 times)
Replace
Main PCB
NO
TEST MODE 2 Voltage [V]
CON3
5
nd
pin ~ 6
th
pin
112V ~ 116V
5
Check the Heater Voltage.
Is voltage 0V?
Yes
Input Test 1 Mode
(Push the button 1 time)
Replace
Main PCB
No
6
Explain to customer
CON3
CON3
51
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