Pr 30 High

Biasi Pr 30 Fault Code

Also written as PR30 — same fault.

The Biasi Pr 30 fault code means: your boiler has stopped working because the water pressure in the central heating system is too low.. It appears on 1 Biasi model 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: Correct pressure C.H. system
Typical repair cost £0-120 (including labour)

DIY fix possible

Locate the filling loop (usually a silver flexible hose) underneath the boiler.Slowly open the valves until you hear water flowing and watch the pressure gauge.Close the valves firmly once the pressure gauge reaches between 1.0 and 1.5 bar.

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Biasi models that show the Pr 30 fault code

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

Source

Biasi Pr 30 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