E9
Proline
Door Latch Mechanism or Monitor Switch Error
Microwave shows E9 and will not start; sometimes occurs after the unit has been dropped or the door has been slammed.
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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.
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Possible Causes
Broken door latch hook, Misaligned door latch assembly, Faulty door monitor switch, Damaged door frame or hinges
How to Fix / Troubleshooting
Safety first: Unplug the microwave. Do not attempt to bypass door safety switches.
User-level checks:
- Inspect the door: Look closely at the plastic latch hooks on the door edge. If they are cracked, loose, or missing, the door cannot engage the switches correctly.
- Check door alignment: Close the door slowly and observe if it sits evenly and flush with the cabinet. If it sags or rubs, the hinges or latch may be bent.
- Gently lift the door while closed and see if E9 appears or clears; movement affecting the code indicates latch/switch issues.
If damage is visible:
- Do not use the microwave. The door latch assembly or monitor switch must be replaced by a technician to maintain radiation safety.
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Repair Difficulty
Hard
4/5
Required Part
Door Latch Assembly
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