OFF Low

Biasi OFF Fault Code

The Biasi OFF fault code means: your boiler is currently set to standby mode or has been switched off manually, meaning it will not provide any heating or hot water until it is turned back on.. It appears on 2 Biasi models in our database.

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: Boiler switched off
Typical repair cost £0 (including labour)

DIY fix possible

Check that the main power switch is turned onRotate the main selector dial from the 'OFF' or 'Standby' position to either the 'Hot Water Only' or 'Heating and Hot Water' iconCheck if your external room thermostat or programmer is calling for heat

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Biasi models that show the OFF fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Biasi OFF fault code information on this page is sourced and cross-checked against the official Biasi service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026