How much does it cost to fix boiler error code LED 5?

Typical repair cost for the boiler LED 5 fault is £80-120 including labour.

LED 5 High

Boiler Fault Code LED 5

Also written as LED5 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code LED 5 appears across 2 boiler brands and 11 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 the water pressure inside the system has dropped too low for it to operate safely, meaning your heating and hot water will not turn on. (As reported on Ferroli DOMINAplus F24D)

Pick your boiler brand for the LED 5 fix

Ferroli LED 5 5 models Myson LED 5 6 models

Source

Information for the LED 5 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