BoilerFaultCodesWorcester Bosch C7216 Fault Code
The Worcester Bosch C7216 fault code means: your boiler has stopped working because the fan that clears exhaust gases is not spinning at the correct speed.. It appears on 1 Worcester Bosch model in our database.
Technical description: Fan speed too low – check the fan harness and connector
What causes the Worcester Bosch C7216 fault?
This fault occurs when the boiler's control system detects that the fan is not spinning fast enough to safely clear waste gases from the flue. The most common reasons are a build-up of dirt within the fan housing, worn-out bearings that prevent the motor from turning freely, or a loose electrical connection between the fan and the main control board.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Worcester Bosch models that show the C7216 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch C7216 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