Microwave beeps and displays E12; cooking will not start or stops immediately.
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
How to Fix / Troubleshooting
Safety: Disconnect power before attempting any adjustments. Do not operate the microwave with the cabinet removed.
User-level checks:
- Visual inspection: Check that the door sits square in the opening and that the gaps around the door are even. If the door sags, the hinges or latch may be worn.
- Clean the frame: Wipe the door frame and latch area with a damp cloth to remove grease or debris that may prevent full closure.
- Check door pressure: Close the door and press gently around the perimeter. If the error clears when you push on a corner, the latch alignment is off.
Adjustment/repair (technician recommended):
- Remove the outer cover to access the door latch receiver and interlock bracket.
- Inspect the door hinges for play; tighten mounting screws to the cabinet and door.
- If the plastic latch hook is worn or rounded, replace the door latch assembly.
- Realign the interlock bracket so that all switches are fully engaged when the door is closed without excessive force.
If the door itself is warped or damaged, replacement of the complete door assembly is usually required.
Repair Difficulty
Required Part
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