F.XX — Fault displayed in list of faults

What does F.XX mean?

Your boiler's display shows a fault code starting with F, such as F.XX. This indicates an internal issue or malfunction that the boiler has detected and recorded in its fault memory.

• Various internal boiler component issues
• sensor errors or failures
• System malfunctions
• External system problems requiring attention

Click steps to track your progress.

1. 1

   Note the specific F.XX fault code displayed on your boiler's screen.

2. 2

   Try resetting the boiler by pressing the reset button, if available, or by briefly turning off and on the main power supply to the boiler.

3. 3

   If you have installer access, navigate to the 'List of faults' to review the error for more details.

4. 4

   If advised by a qualified technician, access the installer level and navigate to parameter D.094 to delete the fault history (select '1 = Yes').

5. 5

   If the fault persists or returns, contact a qualified heating engineer, providing them with the exact F.XX code for accurate diagnosis.