BoilerFaultCodesYour boiler thinks a flame is present when there shouldn't be one, and it has stopped working for safety reasons.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: False flame
What causes this fault?
This fault occurs when the boiler's internal electronics detect a flame in the burner area even though the gas valve should be closed and the system isn't currently heating. It is usually caused by a faulty sensor sending a 'ghost' signal to the control board or a malfunction in the ignition lead that creates electrical interference. In some cases, it can indicate that the main control board is incorrectly interpreting signals and has shut the system down as a vital safety precaution.
This fault can sometimes be more frequent during periods of high humidity or after heavy rain, as moisture ingress can affect the electrical sensitivity of the flame sensing components.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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 E00 — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.
Vokera Hydra 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.