Microwave displays E05 and will not start any cooking program.
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: Unplug the microwave before any inspection. Do not remove the outer cabinet unless you are qualified.
User-level steps:
- 1. Allow cooling: If the microwave was used for extended periods, let it cool for 30 minutes unplugged, then plug back in and test.
- 2. Check for blocked vents: Ensure all external vents are clear to prevent overheating.
- 3. Inspect interior: Look for melted plastic, warped interior surfaces, or signs of overheating that may have damaged the sensor.
- 4. Power reset: After cooling, plug back in and try a short cook cycle.
Technician-level checks:
- Locate and test the cavity temperature sensor / thermistor for correct resistance.
- Inspect the sensor harness and connector at the control PCB.
- Replace the temperature sensor if out of specification.
If E05 remains, discontinue use and contact a service technician; continued operation may be unsafe.
Repair Difficulty
Required Part
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