65
LG 65 Error Code – Heat Sink Thermistor Disconnected
Air Conditioner · HIGH Severity
What This Error Means
Heat sink thermistor has disconnected or shorted out
Diagnostic & Repair Steps
1
Power Reset
Turn off at breaker, wait 5 min, restart.
Turn off at breaker, wait 5 min, restart.
RESET
~5 min
2
Locate Heat Sink Thermistor
Find thermistor on outdoor PCB heat sink.
Find thermistor on outdoor PCB heat sink.
INSPECT
~10 min
3
Check Thermistor Connection
Disconnect and reconnect.
Disconnect and reconnect.
CHECK
~5 min
4
Measure Thermistor Resistance
Replace if open or shorted. ⚠️ Disconnect power first
Replace if open or shorted. ⚠️ Disconnect power first
TEST
~15 min
5
Refer to LG Service Manual
Visit www.lg-dfs.com for detailed troubleshooting.
Visit www.lg-dfs.com for detailed troubleshooting.
CHECK
~10 min
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