E50
Baxi
Fan Speed Control / Modulation Fault
Boiler shows E50, often related to fan speed or modulation control
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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 Baxi fan speed sensor, Faulty fan motor, PCB fan control circuit fault, Loose fan connector
How to Fix / Troubleshooting
Safety first: Fan and combustion components must only be serviced by Gas Safe engineers.
User checks:
- Listen when the boiler attempts to start: if the fan is noisy, grinding, or not running, note this for the engineer.
- Reset the boiler once to see if the fault clears temporarily.
Professional actions:
- The engineer will test the fan speed feedback, check wiring, and replace the fan or PCB as required.
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Repair Difficulty
Professional Required
5/5
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