Low
1 second ON 1 second OFF on Biasi Garda M90f

Your boiler has detected that the temperature is low and is running its internal protection mode to prevent the pipes from freezing.

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.

What the manual says

Manufacturer manual

Anti-freeze system active. C.h. operation or D.h.w. operation

From this model's manual
Verified against the Biasi Garda M90f installation & service manual, page 19.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

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

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