High
Lights Off Off Off on Potterton Promax 15/2 HE Plus

Your boiler has lost all power and is completely unresponsive as if it has been unplugged.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Electrical Supply failure. Check system controls, system wiring, wiring from terminal block to PCB, and PCB fuse.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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