BoilerFaultCodes BURNER STAYS ON High
Your boiler is failing to switch off even when it should, which means it will continue to run constantly and may overheat.
Call an engineer soon
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: i) Air in hot pipe ii) Gas valve spindle jammed iii) Venturi blocked iv) Gas valve “letting by” v) Loose jumper on house stop tap vi) Dead-leg on system vii) Dirt in water section
Typical repair cost £150-300 (including labour)
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 BURNER STAYS ON — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.
Chaffoteaux Corvec 28 OF BF 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.