Sensing Fail, F1, F2, F2, F5 - LG LUTG4519SN Service Manual

Sensing Fail, F1 (F4), F2 (F5)?
Unplug the unit
1
Is the Connector disconnected or loose?
(1) Sensor connection
(2) CN60 and CN61 of Main PCB
Upper Sensor
connection
No
CN60
No
TROUBLESHOOTING
Yes Reconnect or adjust the
connection
Lower Sensor
connection
CN61
2
Is the resistance of thermistor normal?
Check:
Pins 4 and 5 of CN60 and pins 5 and 6
of CN61 in main PCB Normal-
approximately 1.09kΩ at 75ºF(25ºC)
CN61
Yes
-8-15-
No
Replace the defective
Thermistor
CN60