BoilerFaultCodesWorcester Bosch C7214 Fault Code
The Worcester Bosch C7214 fault code means: your boiler's air fan is failing to start up, which means the system cannot safely clear the combustion chamber to begin the heating process.. It appears on 3 Worcester Bosch models in our database.
Technical description: The fan does not run during the start phase
What causes the Worcester Bosch C7214 fault?
This fault occurs when the boiler's internal computer tries to spin up the fan to clear out old gases, but it receives no response or movement from the motor. The most common reason is that the fan motor has burnt out or seized, though it can also be caused by a communication failure between the main control board and the fan assembly.
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 C7214 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch C7214 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