BoilerFaultCodesYour boiler has tried to fire up but could not light the flame, causing it to shut down for safety.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Indicates that the burner has failed to light. To reset the boiler turn the selector switch to the reset position.
What causes this fault?
This fault occurs when the boiler's internal sensor fails to detect a flame after several attempts to start. The most common reasons are a lack of gas reaching the burner, a faulty spark that cannot ignite the gas, or a sensor that is too dirty to see the flame that has been lit.
This issue is more frequent during extreme cold spells, as external gas meters or pipes can occasionally freeze and restrict the gas flow required for ignition.
DIY fix possible
Check that your gas supply is turned on at the meterTurn the control knob to the 'Reset' position for five secondsSlowly release the knob back to the 'On' position and wait for the boiler to restart
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like Reset Neon (Flashing) — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.
Potterton Performa 24 is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
Affiliate links — we may earn a commission at no extra cost to you.