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.

What the manual says

Manufacturer manual

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

From this model's manual
Verified against the Potterton Promax 15 2 He Plus 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.

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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