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Boiler On light on on Baxi Solo 3 40 PF

Your boiler is receiving power and has been told to turn on by your thermostat, so it should be operating normally.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Indicates if the boiler is receiving power and the thermostat is calling for heat.

From this model's manual
This code was read directly from the manufacturer service manual for this model.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Check that your room thermostat is set to a temperature higher than the current room temperatureEnsure your programmer or timer is set to an 'ON' periodCheck if the gas supply is turned on at the meter

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Related fault codes

Pilot On lightView →

All 23 fault codes on the Solo 3 40 PF

Seeing a different code? Every code this model can display, in one place.

Boiler On (Orange LED)Burner LED GreenBurner On light offFan/Flue LED GreenIndicator light inside box litLights: Flash Flash OnLights: Flash Off FlashLights: Flash Off OnLights: On Off FlashLights: On Off OnLights: On On OnLockout light onOverheat (Red LED)Overheat indicator lightOverheat Neon IlluminationPeripheral / Pump LED GreenPilot On lightPilot On light onPilot/Ignition LED GreenPower LED GreenPower On (Green LED)Red neon illuminated

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