How much does it cost to fix boiler error code Red LED: Flashing Red?

Typical repair cost for the boiler Red LED: Flashing Red fault is £120-250 including labour.

Red LED: Flashing Red High

Boiler Fault Code Red LED: Flashing Red

Also written as REDLEDFLASHINGRED — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Red LED: Flashing Red appears across 1 boiler brand and 2 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 it is getting too hot and has automatically switched itself off to prevent damage or safety issues. (As reported on Potterton Prima 30B)

Pick your boiler brand for the Red LED: Flashing Red fix

Potterton Red LED: Flashing Red 2 models

Source

Information for the Red LED: Flashing Red 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