Boiler not firing - Fan jammed or faulty

What does Fan Fault mean?

The boiler is attempting to ignite but fails, or makes unusual noises. This suggests a problem with the internal fan, which is essential for proper air-fuel mixture and exhaust.

• Boiler fan is jammed
• Faulty fan winding
• Incorrect electrical connections to the fan
• Faulty PCB

Click steps to track your progress.

1. 1

   Listen for the fan operating when the boiler tries to start; a lack of sound or grinding noises indicates a problem.

2. 2

   Turn off the boiler at the main power supply, wait for one minute, then turn it back on to reset.

3. 3

   Ensure that the flue terminal outside the property is not blocked by debris or nests.

4. 4

   If the boiler still fails to fire due to a fan issue, contact a qualified heating engineer for diagnosis and repair.