Baxi · DUO TEC Boilers
The boiler has detected a problem with the fan, which is essential for proper combustion and flue gas extraction.
Click steps to track your progress.
Turn off the main power supply to the boiler, wait 30 seconds, then turn it back on.
Listen for any unusual noises from the fan area when the boiler attempts to start.
If the error persists, a qualified technician should check the fan unit and its electrical connections.