Low
C.h. operation on Biasi Riva Compact 24S (M90E.24S)

Your boiler is currently running in central heating mode and this light is a normal status indicator 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.

What the manual says

Manufacturer manual

Lamp 1 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 if your thermostat or programmer is calling for heatAdjust your temperature settings if you do not want the heating onNo action is required if your radiators are warming up as intended

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