Boiler displays F.32, fan does not run or runs erratically

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.

Possible Causes

Failed fan motor, Blocked or stiff fan impeller, Loose fan wiring or connector, Faulty PCB fan driver

Safety: The fan is part of the flue gas system. Only qualified engineers should service it.

Reset once: Try a reset. If F.32 returns, leave the boiler off.
Listen for fan: On a call for heat, you should hear the fan start. If it is silent or just hums, the motor may be seized.
Engineer tasks: A technician will check the fan voltage supply, free the impeller if obstructed, and replace the fan assembly or PCB as required.

Professional Required 5/5

Flue Fan Assembly

Check Price on Amazon

We may earn a commission from links on this page.