How much does it cost to fix boiler error code 10.i?

Typical repair cost for the boiler 10.i fault is £120-250 including labour.

10.i Medium

Boiler Fault Code 10.i

Also written as 10I — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code 10.i 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 is struggling because it cannot pump enough water through the system, causing it to rapidly turn on and off to protect itself. (As reported on Chaffoteaux Sterling FF)

Pick your boiler brand for the 10.i fix

Chaffoteaux 10.i 1 model

Source

Information for the 10.i 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 7 July 2026