C7 217 High

Worcester Bosch C7 217 Fault Code

Also written as C7217 — same fault.

The Worcester Bosch C7 217 fault code means: your boiler has shut down because the internal fan, which safely clears waste gases from the system, has suddenly stopped working while the boiler was running.. It appears on 11 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: Fan has stopped during appliance operation
Typical repair cost £250-£450 (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 C7 217 fault code

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

Source

Worcester Bosch C7 217 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