F32
Protherm
Fan Speed Control Fault
Boiler displays F32, fan may not start or runs erratically
Advertisements
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.
Advertisements
Possible Causes
Defective fan motor, Blocked or stiff fan impeller, Wiring fault between fan and PCB, Faulty PCB fan control circuit
How to Fix / Troubleshooting
Safety: Isolate power and gas. Wait for the boiler to cool before accessing the fan compartment.
Checks:
- Inspect the fan for signs of overheating, noise, or physical damage. Ensure the impeller spins freely by hand.
- Check the fan connector and wiring harness for secure fit and damage.
- Measure supply voltage to the fan during start‑up (technician only). If correct voltage is present but the fan does not run, replace the fan with a genuine Protherm unit.
- If no or incorrect voltage is present, the PCB may be faulty and require replacement.
After repair: Verify correct fan operation and that F32 does not recur.
Advertisements
Repair Difficulty
Hard
4/5
Advertisements