C7 217 — Fan stopped or irregular speed

What does C7 217 mean?

The boiler's fan has stopped during appliance operation or its speed is irregular during startup. This indicates a critical fault with the fan system.

• Faulty fan motor.
• Issue with the fan's power supply or control signal.
• Control board malfunction.

Click steps to track your progress.

1. 1

   Reset the boiler using the reset button or by cycling the main power.

2. 2

   Check for any obvious physical obstructions preventing the fan from spinning.

3. 3

   Contact a Gas Safe registered engineer, as the fan system requires expert diagnosis and repair.