How much does it cost to fix Worcester Bosch error code Fault 14 / 118?

Typical repair cost for the Worcester Bosch Fault 14 / 118 fault is £80-160 including labour.

Fault 14 / 118 High

Worcester Bosch Fault 14 / 118 Fault Code

Q: What does the Worcester Bosch Fault 14 / 118 fault code mean?

Your boiler's internal computer has lost communication with its connected hot water or smart control components due to a settings mismatch.

Also written as FAULT14118 — same fault.

The Worcester Bosch Fault 14 / 118 fault code means: your boiler's internal computer has lost communication with its connected hot water or smart control components due to a settings mismatch.. It appears on 1 Worcester Bosch model in our database.

Technical description: System configuration: incompatible BUS device. IPM for cylinder must be set to identification 3 or higher.

What causes the Worcester Bosch Fault 14 / 118 fault?

This fault occurs when the boiler's main control board cannot understand the signals coming from the cylinder or the smart heating controls because they are not properly synced. It is effectively a communication breakdown caused by a settings mismatch or a failure in the electronic module that manages the domestic hot water system.

Typical repair cost £80-160 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Worcester Bosch models that show the Fault 14 / 118 fault code

Click a model for the full fault code list and model-specific repair notes.

Greenstar CDi Compact Repair: £80-160

Source

Worcester Bosch Fault 14 / 118 fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026