Haier Severe door interlock failure

Microwave runs with door open (light, fan, or turntable operate when door is open)

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Incorrectly installed door switches, Broken switch actuator, Shorted wiring harness, Failed control board logic

How to Fix / Troubleshooting

Critical safety warning: A microwave that operates with the door open is extremely dangerous due to potential microwave radiation leakage. Unplug immediately.

Do not attempt to use: Leave the unit unplugged and do not attempt temporary fixes.
Professional repair only: Door interlock systems must be repaired and tested by a qualified technician with proper leakage testing equipment.

Repair Difficulty

Professional Required 5/5

Required Part

Door Interlock System

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