Siemens
Secondary Heating System Failure (Grill/Convection)
Microwave built-in combination model does not heat in hot air or grill modes, but microwave mode works.
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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
Open grill element, failed convection heater, faulty convection fan, defective temperature sensor for oven modes
How to Fix / Troubleshooting
Safety warning: Grill and convection elements become very hot. Allow full cooling and disconnect power before inspection.
Steps to try:
- 1. Confirm mode: Ensure you have selected the correct hot air or grill program and temperature.
- 2. Observe elements: In grill mode, look through the door to see if the grill element glows red after a minute. If not, it may be open.
- 3. Listen for fan: In hot air mode, you should hear the convection fan running. If silent, the fan motor may be faulty.
- 4. Technician-level: Test resistance of grill and convection elements, check fan motor continuity, and verify temperature sensor readings. Replace faulty components.
Do not attempt to bend or physically manipulate heating elements.
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Repair Difficulty
Hard
4/5
Required Part
Grill Element or Convection Heater
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