09
Vokera
Fan Speed / Fan Feedback Fault
Boiler shows 09, fan runs continuously or not at all, no ignition
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
Faulty fan speed sensor, Fan motor failure, Loose fan connector, PCB fan control fault
How to Fix / Troubleshooting
Safety first: Isolate power before removing the boiler case. Do not touch the fan while powered.
- Listen to fan: On reset, note whether the fan starts, runs erratically, or does not run at all.
- Engineer checks:
- Inspect fan connector and wiring for burning or looseness.
- Check fan spins freely by hand and is not obstructed by debris.
- Measure supply voltage to the fan from the PCB.
- On models with speed feedback, verify the tachometer signal to the PCB.
Fan replacement usually requires removal of the flue connection and sealing gaskets; this must be done by a Gas Safe engineer.
Advertisements
Repair Difficulty
Professional Required
5/5
Advertisements