14 + High

Biasi 14 + Fault Code

Also written as 14 — same fault.

The Biasi 14 + fault code means: your boiler has overheated or the water is not circulating properly through the system, causing it to shut down for safety.. It appears on 4 Biasi models in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Pump fault or primary temperature above 105°C.
Typical repair cost £180-350 (including labour)

DIY fix possible

Check that all radiator valves are fully openEnsure the boiler pressure is between 1 and 1.5 bar on the gaugePress the Reset button once to see if the fault clears

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Biasi models that show the 14 + fault code

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

Source

Biasi 14 + 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