BoilerFaultCodesWhat the manual says
Manufacturer manualIndicated 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.
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
All 12 fault codes on the Puma 100e
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