High
lockout on Ideal Concord CXC 48 116

Your boiler has unsuccessfully tried to start five times and has now shut itself down for safety reasons to prevent a gas buildup.

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

If, after 5 attempts, the burner has failed to light

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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