Turbine operation (43) - Other water sources are flowing through the stopped pump

What does 43 mean?

The pump is detecting water flow through it even when it is switched off and stopped. This indicates that other pumps or system sources are causing unwanted circulation through the unit.

• Defective or incorrectly positioned non-return valves in the system.
• Backflow from other parts of the heating or circulation system.

Click steps to track your progress.

1. 1

   Switch off the pump completely at the main switch to verify the 'Turbine operation' indication.

2. 2

   Check the system for any defective non-return valves that should be preventing backflow.

3. 3

   Verify that all non-return valves are installed in the correct position according to your system's design.

4. 4

   Replace any faulty non-return valves as necessary to prevent unwanted flow through the pump.