High
All lights OFF on Potterton Puma 80/100

Your boiler has lost all power and is completely unresponsive, meaning it cannot provide heating or hot water until the electrical connection is restored.

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

Check external wiring, mains supply, or if Fuse F1 on the Electronic Board has blown

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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