Bosch Convection Fan Not Operating

Air fryer heats but fan does not run; food burns on top and cooks unevenly.

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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

Failed fan motor, Jammed fan blade due to grease buildup, Disconnected fan wiring harness, Faulty fan driver on control board

How to Fix / Troubleshooting

Safety first: Unplug and allow the unit to cool completely before accessing the fan.

Steps:

  • 1. Listen for fan: During operation, you should hear a steady fan noise. If silent, suspect the fan circuit.
  • 2. Visual check: Remove the basket and look up at the fan through the heater guard. Check for visible obstructions or heavy grease.
  • 3. Access fan: Remove the top or rear cover to reach the convection fan motor and impeller. Clean off grease and debris with a degreaser and soft brush.
  • 4. Spin test: Gently spin the fan by hand. If stiff or seized, the motor bearings may have failed; replace the motor assembly.
  • 5. Electrical test: Check continuity of the motor windings and verify the connector is firmly seated on the control board.

Note: Do not operate the air fryer with a non‑functional fan; overheating and fire risk increase significantly.

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Repair Difficulty

Hard 4/5

Required Part

Convection Fan Motor
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