Fault F9 — Fan failure during startup

What does F9 mean?

The boiler detects a fan fault during the start-up cycle, approximately 51 seconds after the fan is supposed to begin operation. This prevents the boiler from proceeding to ignition.

• Fan is faulty
• Fan connecting cables are loose or damaged
• Insufficient power reaching the fan
• Fan control issue

Click steps to track your progress.

1. 1

   Check the fan for any visible obstructions or damage.

2. 2

   Inspect the fan connecting cables to ensure they are securely attached.

3. 3

   Verify that the fan is receiving adequate power (this may require a multimeter and professional assistance).

4. 4

   Consult a qualified service technician to check the fan control circuit.