BoilerFaultCodesYour boiler is receiving power correctly, but it has failed to ignite or stay lit, 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 fuse on PCB 37 is OK.
What causes this fault?
This fault occurs when the boiler's control system attempts to start the heating process but cannot detect a stable flame. The most common reasons are a worn-out component that creates the spark, a failure in the valve that delivers gas to the burner, or a fault within the main control board that manages the ignition sequence.
DIY fix possible
Check that your gas supply is turned on at the meterPress the reset button on the front control panelMonitor the boiler to see if it fires up or if the light returns
Find a Gas Safe engineer
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Gas Safe Register →Protect yourself from future repair bills
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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.
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