360 High

Worcester Bosch 360 Fault Code

The Worcester Bosch 360 fault code means: your boiler's internal computer chips are not communicating correctly because an incorrect or incompatible part has been installed.. It appears on 23 Worcester Bosch models in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: The KIM that has been fitted is not compatible with the burner control unit

What causes the Worcester Bosch 360 fault?

This fault occurs when the boiler's main control board cannot verify the identity of the specific model it is supposed to be operating. It is almost always caused by a mismatch between the interchangeable memory chip, known as the KIM, and the boiler's internal computer after a repair or part replacement. Think of it like trying to run modern software on an incompatible, older computer; the two components simply cannot speak the same language.

Typical repair cost £180-350 (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 360 fault code

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

Source

Worcester Bosch 360 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