LG GR-P247C - Refrigerator Defrost Heater Error

40
Refrigerator Defrost Heater Error
Is it displayed under picture?
Reconnect
Pin3 To Pin5
Test Point
230V
Result
Enter the TEST 2 MODE
Is the voltage value
between pins 5(BL) and
3 (BN) of CON4 230 V AC?
Enter the TEST 1 MODE
Is the voltage value
between pins 5(B) and
3 (BN) of CON4 0 V AC?
Relay operation
Replace
MAIN PCB
No
Replace
MAIN PCB
No
Yes
Yes
Is the connection loose?
CON4
Yes
Yes
Pin3 To Pin5
Test Point
0~2V
Result
Relay Open
No
CON6
Pin3Pin5
Pin3Pin5