Safety first: Unplug the air fryer before accessing the door switch area.

Steps to troubleshoot E7:

Check door closure: Open and firmly close the door. Ensure no basket handle, liner, or accessory is preventing full closure. Listen for a distinct click from the door switch.
Inspect latch and strike: Examine the plastic latch hook on the door and the strike/receiver on the body. Look for cracks, warping, or misalignment.
Access the door switch: Remove the front bezel or side panel (depending on model) to reach the door switch assembly. Verify the switch actuator moves freely when the door closes.
Test the switch: Disconnect the switch and test continuity with a multimeter. In most designs, the switch should show continuity (closed) when the door is shut and open when the door is open. Replace if readings are inconsistent.
Check wiring: Ensure the switch harness is intact and firmly connected to the main PCB.

Note: Replace damaged latch hooks or door switch assemblies only with LG-compatible parts to maintain proper safety interlock function.

LG air fryer displays E7 and will not start; door appears closed.

Possible Causes