Medium
Orange LED on Chaffoteaux 80/100

Your boiler is signalling that the burner is currently active or that it is struggling to verify the internal status of the heating system.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Burner on indicator / Internal PCB or sensor monitoring

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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