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

Typical repair cost for the boiler INSUFFICIENT WATER fault is £80-150 including labour.

INSUFFICIENT WATER High

Boiler Fault Code INSUFFICIENT WATER

Also written as INSUFFICIENTWATER — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code INSUFFICIENT WATER appears across 1 boiler brand and 7 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 is too low to run safely and needs to be topped up. (As reported on Ariston E-Combi One 30)

Pick your boiler brand for the INSUFFICIENT WATER fix

Ariston INSUFFICIENT WATER 7 models

Source

Information for the INSUFFICIENT WATER 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