High
BURNER STAYS ON on Chaffoteaux Corvec 28 OF BF

Your boiler is failing to switch off even when it should, which means it will continue to run constantly and may overheat.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 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

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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