Your boiler is failing to light the gas flame, which means you have no heating or hot water until the system is reset or repaired.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Failure to ignite
What causes this fault?
This fault occurs when the boiler's control system attempts to light the gas but cannot detect a stable flame. The most common reasons include a lack of gas supply reaching the unit, worn-out electrodes that can no longer produce a spark, or a faulty gas valve that isn't opening correctly.
This fault is more common during the first cold snap of autumn when components that have been sitting idle over summer are suddenly forced to work under high demand.
DIY fix possible
Check if your gas supply is turned on at the meterTurn the mode selector switch to the 'OFF/RESET' position and then back to 'ON'Check if other gas appliances in your home are working correctly
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 01 — no call-out fees, no surprises.
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Vokera Mynute 28E / 35E 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.
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