High
Electrical Supply Fault on Potterton Suprima HE

Your boiler is failing to detect the necessary electrical power to operate, which may be caused by a loose wire or an issue with your heating controls.

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

Boiler requires permanent and switched live minimum 190V. Check system controls and wiring.

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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Related fault codes

E119View →E110View →

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