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Flashing Mains ON light on Potterton Performa System HE

Your boiler is receiving power, but it has been turned off at the main 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

Indicates that there is a mains electrical supply to the boiler, but the control knob is in the OFF position.

From this model's manual
Verified against the Potterton Boiler Promax System He 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

Locate the main control dial on the front of the boiler panelTurn the dial clockwise away from the 'OFF' or '0' position to your desired heating or hot water setting

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