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

Your boiler is not receiving enough electricity from your home's power supply to run safely and consistently.

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

Low Electrical Supply. Incoming Voltage less than 180V. Check System Controls & System Wiring. Otherwise contact Electricity Provider.

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 →E133View →

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