High
Reset light on Potterton Puma 100e

Your boiler has stopped working for safety reasons and needs a manual restart because it either failed to spark or the water pressure is too low.

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

Indicated in fault finding as a condition where the boiler fails to operate; requires checking system pressure is above 1 bar, setting Boiler switch to 'Standby', depressing reset button for 10 seconds, releasing and setting Boiler switch to 'On'.

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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