How much does it cost to fix boiler error code E78-181?

Typical repair cost for the boiler E78-181 fault is £150-300 including labour.

E78-181 Emergency

Boiler Fault Code E78-181

Also written as E78181 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code E78-181 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 that dangerous exhaust gases are not escaping correctly through the flue, so it has shut down for your protection. (As reported on Potterton Kingfisher MF RSL)

Pick your boiler brand for the E78-181 fix

Potterton E78-181 1 model

Source

Information for the E78-181 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