How much does it cost to fix Biasi error code Er 07?

Typical repair cost for the Biasi Er 07 fault is £80-180 including labour.

Er 07 High

Biasi Er 07 Fault Code

Q: What does the Biasi Er 07 fault code mean?

Your boiler has detected that the water pressure is either too low or the sensor that monitors it is not working correctly, causing the system to shut down for safety.

Also written as ER07 — same fault.

The Biasi Er 07 fault code means: your boiler has detected that the water pressure is either too low or the sensor that monitors it is not working correctly, causing the system to shut down for safety.. It appears on 2 Biasi models in our database.

Technical description: Pressure gauge / Main circuit pressure switch

Typical repair cost £80-180 (including labour)

DIY fix possible

Check the pressure gauge on the front of the boiler; it should be between 1 and 1.5 bar.If the pressure is below 1 bar, use the filling loop valves underneath the boiler to carefully top up the water level.Once the pressure is corrected, press the 'Reset' button on the boiler control panel.

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Biasi models that show the Er 07 fault code

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

Source

Biasi Er 07 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