Cointra
Fan Wheel Rubbing / Misalignment
Furnace emits a metallic or scraping noise when the fan starts or stops.
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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
Fan wheel shifted on shaft, Bent fan blades, Loose motor mounts, Cabinet deformation
How to Fix / Troubleshooting
Safety: Turn off power before working near moving parts.
Steps:
- Inspect fan clearance: Check that the fan wheel does not touch the housing. Adjust the wheel position on the shaft if it has slipped.
- Tighten mounts: Tighten motor mounting bolts and any brackets securing the fan assembly.
- Check cabinet: Ensure the cabinet is not dented or deformed into the fan area.
Professional help: If the wheel is damaged, it should be replaced by a technician to maintain balance.
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Repair Difficulty
Medium
3/5
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