Bosch
Convection heating failure
Bosch oven fan runs but there is no heat in convection or fan-assisted modes
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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 convection heating element (if separate), Faulty fan-assisted relay, Wiring fault to convection element, Misconfigured mode selection
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker before accessing rear panels.
- Confirm mode: Ensure a convection or fan-assisted mode is selected, not a cool-down or fan-only mode.
- Test convection element: Access the rear of the oven and locate the ring element around the convection fan. Measure resistance; replace if open.
- Inspect wiring: Check the harness from the control board to the convection element for burns or loose connectors.
- Control relay: If the element is good but never energizes, the convection relay on the main board may be faulty and require board replacement.
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Repair Difficulty
Medium
3/5
Required Part
Convection Heating Element
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