Low
Mains light on Potterton Promax

Your boiler is receiving power as normal and this light simply confirms it is switched on, not indicating a fault.

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.

Technical description

Indicates that the mains electricity to the boiler is on.

DIY fix possible

Check your central heating thermostat or timer settings if you are not receiving heat or hot water.If the boiler is working correctly, no action is required as this light is a normal indicator.

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