De Dietrich
Convection Fan Mechanical Noise
Oven makes loud rattling or grinding noise when fan is running
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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, debris caught in fan, worn fan motor bearings, bent fan impeller
How to Fix / Troubleshooting
Safety first: Turn off power and wait for the fan to stop completely before inspection.
- Identify noise source: Run the oven briefly in fan mode and listen to locate the noise (rear cavity vs. top cooling fan).
- Inspect convection fan: Remove the rear cavity panel to access the fan. Check for loose screws, food debris, or foil stuck in the blades.
- Tighten or replace fan blade: Ensure the fan nut or screw is tight. If the blade is bent or cracked, replace it.
- Motor bearings: Spin the motor shaft by hand. If rough or noisy, replace the convection fan motor assembly.
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Repair Difficulty
Medium
3/5
Required Part
Convection Fan Motor
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