How much does it cost to fix boiler error code F49?

Typical repair cost for the boiler F49 fault is £150-300 including labour.

F49 High

Boiler Fault Code F49

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code F49 appears across 3 boiler brands and 11 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has lost the communication signal between the main controller and the heating system, meaning it cannot receive instructions to provide heat or hot water. (As reported on Heatline Capriz Plus)

Pick your boiler brand for the F49 fix

ECA F49 3 models Glow-worm F49 1 model Heatline F49 7 models

Source

Information for the F49 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