Low
Neon 2 on Protherm 40-50 CI

Your boiler is currently set to provide heating and is working to reach the temperature you have selected on the control dial.

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

Boiler thermostat knob turned to a setting calling for heat (up to 82oC/180oF)

From this model's manual
Verified against the Protherm 40 50 Ci installation & service manual.
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 turned up to a higher temperature than the current room heatEnsure the boiler thermostat knob is turned to your desired heat levelMonitor the boiler to see if it reaches temperature and the light turns off naturally

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