How much does it cost to fix boiler error code E83491?

Typical repair cost for the boiler E83491 fault is £120-200 including labour.

E83491 Low

Boiler Fault Code E83491

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code E83491 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's internal clock and timer settings have lost power because the backup battery inside the control panel has failed. (As reported on Potterton Powermax HE)

Pick your boiler brand for the E83491 fix

Potterton E83491 1 model

Source

Information for the E83491 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