Alarm 29 — Forced pumping, flow through stopped pump

What does 29 mean?

Other pumps or external sources are forcing water flow through the MAGNA3 pump, even when the pump is stopped and switched off. This indicates an issue with the system's hydraulics.

• Defective non-return valves in the system.
• Incorrectly positioned non-return valves.
• External pressure from other pumps or sources.

Click steps to track your progress.

1. 1

   Switch off the pump using the main switch.

2. 2

   Observe the Grundfos Eye; if it shows a light, the pump is still in forced-pumping mode.

3. 3

   Inspect the system for any defective non-return valves and replace them if necessary.

4. 4

   Verify that all non-return valves are correctly installed in the system to prevent reverse flow.