Bosch
Mechanical Noise from Fan Assembly
Air fryer emits loud rattling or grinding noise during 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
Loose fan blade on motor shaft, Foreign object contacting fan, Worn fan motor bearings, Loose mounting screws on fan housing
How to Fix / Troubleshooting
Safety first: Unplug the unit and wait until all moving parts stop before opening.
Steps:
- 1. Identify noise source: Run the unit briefly and listen to locate the noise (top, rear, or base). Then unplug.
- 2. Access fan: Remove the top or rear cover to reach the fan impeller and motor.
- 3. Check for debris: Remove any loose screws, food particles, or plastic pieces contacting the fan.
- 4. Tighten fan: Ensure the fan blade is firmly secured to the motor shaft (screw or press‑fit). Tighten if loose.
- 5. Bearing check: Spin the fan by hand. Roughness or side‑to‑side play indicates worn bearings; replace the motor assembly.
- 6. Tighten mounts: Tighten all screws securing the fan shroud and motor bracket.
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Repair Difficulty
Medium
3/5
Required Part
Convection Fan Motor Assembly
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