Low
Frost protect operation on Biasi Riva Compact HE M96a

Your boiler is temporarily running its pump to prevent your pipes from freezing during cold weather.

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

Lamp 3 ON

From this model's manual
Verified against the Biasi Riva Compact 24s installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Check your external room thermostat or frost stat settingsEnsure the boiler remains switched on at the mainsWait for the ambient temperature to rise above the frost protection threshold

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