Refrigerator Defrost Heater Error - LG GR-P247C Service Manual

Refrigerator Defrost Heater Error

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