How much does it cost to fix boiler error code Fault 15 / 30?

Typical repair cost for the boiler Fault 15 / 30 fault is £90-180 including labour.

Fault 15 / 30 Low

Boiler Fault Code Fault 15 / 30

Also written as FAULT1530 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Fault 15 / 30 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 lost communication with its outdoor weather sensor, meaning it cannot automatically adjust your heating based on the temperature outside. (As reported on Worcester Bosch Greenstar CDi Compact)

Pick your boiler brand for the Fault 15 / 30 fix

Worcester Bosch Fault 15 / 30 1 model

Source

Information for the Fault 15 / 30 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