E110
Boiler maximum temperature exceeded
Baxi lists E110 when the boiler exceeds the permitted temperature gradient or the safety thermostat trips.
What this code means
Baxi lists E110 when the boiler exceeds the permitted temperature gradient or the safety thermostat trips.
Possible causes
- Pump jammed or poor circulation
- Air in the heating circuit
- Safety thermostat activation
- Circulation restriction
Common symptoms
- E110 displayed
- Boiler may lock out
- Heating and hot water may stop
Checks to make
- Check system pressure from user controls
- Check for obvious circulation issues such as cold radiators
- Arrange qualified boiler diagnosis
Safety
- Do not remove the boiler casing or work on gas, combustion, flue or internal electrical components unless appropriately qualified. If gas is suspected, follow the national gas-emergency procedure.
Model notes
Baxi fault-code availability varies by boiler family and control platform.