How much does it cost to fix boiler error code 9 25 blinking?

Typical repair cost for the boiler 9 25 blinking fault is £150-300 including labour.

9 25 blinking High

Boiler Fault Code 9 25 blinking

Also written as 925BLINKING — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code 9 25 blinking appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has stopped working because it cannot move the hot water around your system effectively, so it has shut down to protect itself. (As reported on Saunier Duval Ecosy 24E)

Pick your boiler brand for the 9 25 blinking fix

Saunier Duval 9 25 blinking 2 models

Source

Information for the 9 25 blinking 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