What does C7 216 mean?

The boiler's fan speed is too low. This issue can prevent proper air supply for combustion and safe exhaust of flue gases.

• Defective fan.
• Faulty fan harness or connector.
• Control board malfunction.

Click steps to track your progress.

1. 1

   Power cycle the boiler by turning it off at the mains for 30 seconds and then back on.

2. 2

   Visually check the fan assembly for any visible debris or obstructions.

3. 3

   If the problem persists, contact a Gas Safe registered engineer to inspect the fan and its connections.