How much does it cost to fix boiler error code E 08?

Typical repair cost for the boiler E 08 fault is £120-200 including labour.

E 08 High

Boiler Fault Code E 08

Also written as E08 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code E 08 appears across 3 boiler brands and 7 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 its connection to one of its temperature sensors, meaning it cannot accurately measure how warm the water is when it returns to the unit, so it has stopped working for your safety. (As reported on Ariston Genus One 24)

Pick your boiler brand for the E 08 fix

Ariston E 08 5 models Chaffoteaux E 08 1 model Ideal E 08 1 model

Source

Information for the E 08 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