Low
A short pulse every 4 seconds on Biasi Riva Advance M96.24SM

Your boiler is working correctly and is simply in standby mode while its built-in protection prevents the internal pipes from freezing.

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

Boiler in stand-by condition. Anti-freeze system active.

From this model's manual
Verified against the Biasi Riva Advance M96 24sm 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

No action is required as this is a normal status message.Ensure your gas and electricity supplies are left on during cold weather.The light will stop pulsing once the boiler temperature rises or you turn on your heating.

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Avoid the next call-out bill

A cover plan would handle faults like A short pulse every 4 seconds: no call-out fees, no surprise bills.

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