359 High

Worcester Bosch 359 Fault Code

The Worcester Bosch 359 fault code means: your boiler has detected that the water coming out of your hot tap is hotter than it should be, so it has safely shut down to prevent scalding.. It appears on 1 Worcester Bosch model 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: DHW outlet temperature too hot
Typical repair cost £150-250 (including labour)

Engineer required

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

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Worcester Bosch models that show the 359 fault code

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

Source

Worcester Bosch 359 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