Halo screen shows Replace Halo Low

Boiler Fault Code Halo screen shows Replace Halo

Also written as HALOSCREENSHOWSREPLACEHALO — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code Halo screen shows Replace Halo 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 thermostat needs to be officially paired or registered with the boiler's receiver to start controlling your heating. (As reported on Ideal Halo Air RF WI FI 2 Zone)

Pick your boiler brand for the Halo screen shows Replace Halo fix

Ideal Halo screen shows Replace Halo 1 model

Source

Information for the Halo screen shows Replace Halo 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