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

Typical repair cost for the boiler Er 10 fault is £100-280 including labour.

Er 10 High

Boiler Fault Code Er 10

Also written as ER10 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Er 10 appears across 3 boiler brands and 4 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 a blockage in the condensation drainage pipe or a fault with its internal sensing system, causing it to shut down for safety. (As reported on Biasi Advance 25C)

Pick your boiler brand for the Er 10 fix

Biasi Er 10 1 model Ferroli Er 10 1 model Vaillant Er 10 2 models

Source

Information for the Er 10 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