A06
Wolf
Fan Fault / No Airflow Detected
Boiler displays A06, no heating or hot water, fan may not start
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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, Fan connector or wiring fault, Control board fan driver failure, Blocked fan impeller
How to Fix / Troubleshooting
Safety: Isolate electrical power before removing the boiler casing. Do not run the boiler with the casing removed.
- Listen for fan operation: When there is a demand for heat, you should hear the fan start before ignition. If there is no sound, the fan may be faulty.
- Check for external obstructions: Ensure nothing is blocking the air intake or flue terminal outside.
- Reset the boiler: Try a reset to rule out a temporary control fault.
- Call a technician: A professional will measure fan voltage, check the fan harness, and replace the fan assembly or control board if necessary.
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Repair Difficulty
Professional Required
5/5
Required Part
Flue Fan Assembly
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