BoilerFaultCodes E83 486 High
Boiler Fault Code E83 486
Also written as E83486 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E83 486 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 electronic brain is unable to read the water pressure level accurately due to a fault with the internal sensor. (As reported on Potterton Promax 15 & 24)
Pick your boiler brand for the E83 486 fix
Source
Information for the E83 486 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