How much does it cost to fix boiler error code LOW WATER SWITCH?

Typical repair cost for the boiler LOW WATER SWITCH fault is £0-£120 including labour.

LOW WATER SWITCH High

Boiler Fault Code LOW WATER SWITCH

Also written as LOWWATERSWITCH — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code LOW WATER SWITCH 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 has stopped working because the water pressure inside the heating system has dropped too low. (As reported on Ideal Boxer)

Pick your boiler brand for the LOW WATER SWITCH fix

Ideal LOW WATER SWITCH 1 model

Source

Information for the LOW WATER SWITCH 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