F.5 — System Overheating Fault (EcoMax Pro)

What does F.5 mean?

This indicates that your EcoMax Pro boiler system has detected and shut down due to excessively high temperatures.

• Overheating

Click steps to track your progress.

1. 1

   Turn off the boiler and allow it to cool down completely (at least an hour).

2. 2

   Check that all radiator valves are open and there are no closed isolation valves preventing water flow.

3. 3

   Ensure the boiler has adequate ventilation.

4. 4

   If the problem reoccurs, contact a qualified heating engineer to diagnose the cause of overheating.