Bosch
Door Heat Insulation / Ventilation Problem
Microwave door glass or inner panel becomes very hot to the touch during normal microwave-only operation.
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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
Blocked front vents, Faulty door glass assembly, Overheating magnetron or cavity, Incorrect cookware placement against door
How to Fix / Troubleshooting
Safety: Some warming of the door is normal, but it should not be too hot to touch briefly.
- Check vents and seals: Ensure front and side vents are clear. Inspect the door seal for damage or gaps.
- Cookware placement: Avoid placing containers directly against the door; keep food centered on the turntable.
- Monitor temperature: Run a short cycle with a cup of water and periodically touch the outer door surface. If it becomes excessively hot, stop using the microwave.
Excessive door heating: May indicate a door assembly or ventilation fault. Have the unit inspected by a Bosch technician.
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Repair Difficulty
Medium
3/5
Required Part
Door Glass Assembly
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