How much does it cost to fix Biasi error code max err .?

Typical repair cost for the Biasi max err . fault is £100-350 including labour.

max err . High

Biasi max err . Fault Code

Q: What does the Biasi max err . fault code mean?

Your boiler has failed to complete its automatic self-adjustment process, which is necessary for it to run efficiently and safely.

Also written as MAXERR — same fault.

The Biasi max err . fault code means: your boiler has failed to complete its automatic self-adjustment process, which is necessary for it to run efficiently and safely.. It appears on 1 Biasi model in our database.

Technical description: something went wrong during the process (Fast calibration)

Typical repair cost £100-350 (including labour)

DIY fix possible

Locate the reset button or dial on the front control panelPress and hold the reset button for five secondsWait up to 10 minutes for the boiler to attempt the calibration cycle again

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Biasi models that show the max err . fault code

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

Antares System Repair: £100-350

Source

Biasi max err . 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