How much does it cost to fix boiler error code Summer mode LED?

Typical repair cost for the boiler Summer mode LED fault is £280-450 including labour.

Summer mode LED Low

Boiler Fault Code Summer mode LED

Also written as SUMMERMODELED — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Summer mode LED 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 is failing to switch into summer mode due to an internal electronic circuit board failure. (As reported on Glow-worm Compact)

Pick your boiler brand for the Summer mode LED fix

Glow-worm Summer mode LED 1 model

Source

Information for the Summer mode LED 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