BoilerFaultCodesYour boiler has lost its flame while running because it cannot detect a steady signal that the gas is burning correctly.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: The ionisation current detected by the system during the burning phase was insufficient
What causes this fault?
This fault occurs when the boiler successfully lights but cannot confirm that the flame is staying lit, causing the system to shut down for safety. The most common reasons are a worn-out sensor that can no longer 'see' the flame, a build-up of carbon on the internal components, or a slight fluctuation in the gas supply that prevents a steady burn.
DIY fix possible
Check if other gas appliances in your home, such as a hob, are working to confirm gas supply.If you have a prepay gas meter, ensure it has sufficient credit.Press the Reset button once to see if the fault was a temporary glitch.
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 EA229 — no call-out fees, no surprises.
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Worcester Bosch GB162 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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