F.72 — Burner in fault state: Fan idle state not reached

What does F.72 mean?

The burner is in a fault state because the fan unit did not reach its idle state. This can prevent the boiler from operating safely.

• Fan not reaching idle state
• Faulty fan unit

Click steps to track your progress.

1. 1

   Reset the boiler by briefly turning off and on its power supply.

2. 2

   Listen for any unusual noises from the fan unit during startup.

3. 3

   If the fault occurs repeatedly, contact a qualified heating engineer, as the fan unit may need replacement.