How to Fix / Troubleshooting

Safety first: Unplug the unit and allow it to cool before inspection.

Steps to diagnose premature shutoff:

Check ventilation and load: Ensure vents are clear and the basket is not overfilled, which can cause overheating.
Inspect power cord and plug: Wiggle the plug gently in the outlet (with caution) to see if power cuts out. Replace a loose cord or use a different outlet.
Test door switch: Slightly press or lift the door during operation (if safe) to see if movement causes shutoff. Replace a sensitive or worn door switch.
Monitor temperature: If the unit is very hot externally when it shuts off, the internal thermostat or thermal fuse may be tripping due to overheating; clean and inspect fan and heater.

Note: If shutoff occurs randomly with normal temperatures and good connections, the main control board may be failing.

LG air fryer shuts off before the timer reaches zero, without any error code.

Possible Causes