Alarm 10 — Internal fault, circuit board connection lost

What does Alarm 10 mean?

The pump has detected an internal fault where different circuit boards inside the pump have lost connection to each other. This is a critical internal error.

• Loss of connection between internal print circuit boards within the pump.
• A hardware malfunction or failure of an internal component.

Click steps to track your progress.

1. 1

   Note the alarm code 'Alarm 10' for reporting to support.

2. 2

   As this is an internal hardware fault, it requires specialized attention.

3. 3

   Contact Grundfos Service and provide them with the alarm code for troubleshooting and repair.