A14
Hoval
Combustion fan failure
Furnace indicates fan fault, combustion fan does not run or runs erratically
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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
Seized fan motor on Hoval burner, Faulty fan speed control module, Loose fan wiring, Obstruction in fan wheel
How to Fix / Troubleshooting
Safety: Isolate power. Moving fan blades can cause injury.
- Access fan: Remove the burner cover to access the combustion fan assembly.
- Check for obstructions: Inspect the fan wheel for debris, insulation, or broken pieces. Remove any foreign objects.
- Spin test: Gently rotate the fan wheel by hand. It should turn freely without grinding. If stiff or seized, the motor likely needs replacement.
- Inspect wiring: Check the fan motor plug and any speed control module connections for looseness or burn marks.
- Reset and test: Restore power and call for heat. If the fan still fails to start or the error persists, a technician should test the motor and control module.
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Repair Difficulty
Hard
4/5
Required Part
Combustion Fan Motor
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