BoilerFaultCodesYour boiler has received a signal to heat your home, but the burner has automatically switched itself off 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: Burner shutdown following a request
What causes this fault?
This fault occurs when the boiler's control system detects that the flame has failed to stay lit or is burning unsafely after the heating has been triggered. The most common reason is a worn-out sensor that can no longer 'see' the flame, or a faulty gas valve that isn't providing the correct amount of fuel to maintain the burner. Because the boiler cannot guarantee a safe and consistent flame, it shuts down the system as a protective measure.
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 9 — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.
Potterton Envoy Plus 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.