How much does it cost to fix boiler error code Green LED Off, Red LED On?

Typical repair cost for the boiler Green LED Off, Red LED On fault is £100-350 including labour.

Green LED Off, Red LED On High

Boiler Fault Code Green LED Off, Red LED On

Also written as GREENLEDOFFREDLEDON — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Green LED Off, Red LED On appears across 2 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 experienced a safety lockout and has shut itself down to prevent damage. (As reported on Vokera Compact HE)

Pick your boiler brand for the Green LED Off, Red LED On fix

Potterton Green LED Off, Red LED On 2 models Vokera Green LED Off, Red LED On 2 models

Source

Information for the Green LED Off, Red LED On 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