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.

What the manual says

Manufacturer manual

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'.

From this model's manual
Verified against the Potterton Boiler Puma 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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