How much does it cost to fix boiler error code LB7?

Typical repair cost for the boiler LB7 fault is £450-£900 including labour.

LB7 High

Boiler Fault Code LB7

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code LB7 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 heat pump’s internal power management system has encountered an electrical fault, causing the unit to stop running to protect itself. (As reported on Ideal HP290)

Pick your boiler brand for the LB7 fix

Ideal LB7 1 model

Source

Information for the LB7 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