Low
BURNER FIRING 100% on Grant Spira

Your boiler is currently operating at its highest power setting to meet a high demand for heat or hot water, and this is a normal status message rather than a fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

Burner display showing maximum output status

Engineer required

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

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