How much does it cost to fix boiler error code Pr 29?

Typical repair cost for the boiler Pr 29 fault is £90-160 including labour.

Pr 29 Medium

Boiler Fault Code Pr 29

Also written as PR29 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Pr 29 appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has detected an issue with the sensor that monitors the temperature of the cold water coming into the unit, which can affect its ability to heat your water correctly. (As reported on Biasi Advance 25C)

Pick your boiler brand for the Pr 29 fix

Biasi Pr 29 1 model

Source

Information for the Pr 29 fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026