High
Red indicator lit on Chaffoteaux Serelia 24 MFFI

Your boiler has stopped working because it is not receiving the necessary fuel, water, or power it needs to function.

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

No gas, no water or no electricity

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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