How much does it cost to fix Biasi error code E83---101?

Typical repair cost for the Biasi E83---101 fault is £120-280 including labour.

E83---101 High

Biasi E83---101 Fault Code

Q: What does the Biasi E83---101 fault code mean?

Your boiler has become too hot and has shut itself down as a safety precaution to prevent damage.

Also written as E83101 — same fault.

The Biasi E83---101 fault code means: your boiler has become too hot and has shut itself down as a safety precaution to prevent damage.. It appears on 1 Biasi model in our database.

Technical description: Overheat thermostat

Typical repair cost £120-280 (including labour)

DIY fix possible

Check that all radiator valves are fully openEnsure the system water pressure is between 1 and 1.5 barWait for the boiler to cool down and press the 'Reset' button

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Biasi models that show the E83---101 fault code

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

Riva Compact 24S Repair: £120-280

Source

Biasi E83---101 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