BoilerFaultCodesYour boiler is struggling to detect the flame needed to heat your water, which is causing the system 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: FLAME DETECTION ERROR
What causes this fault?
This fault occurs when the boiler's internal sensor fails to confirm that a flame has successfully ignited, even if you can hear the unit trying to start. The most common reasons are a worn-out sensor probe that can no longer 'see' the flame or a buildup of carbon soot that prevents the electrical signal from passing through accurately.
DIY fix possible
Check if other gas appliances in your home, like a hob, are working to ensure gas is reaching the propertyCheck that your prepaid gas meter has creditPress the 'Reset' button on the front of the boiler once
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 94 H......F..... — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.
Ideal Esprit HE 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.