What does 4 mean?

The warning and alarm symbol flashes red, the display shows error code E3, and the pump stops. This means the electrical supply voltage to the pump is too high.

• The power supply voltage to the pump is above the specified range.

Click steps to track your progress.

1. 1

   Verify the power supply voltage reaching the pump.

2. 2

   Ensure the voltage is within the specified operating range for your pump model.

3. 3

   If the voltage is stable, reset the alarm via Grundfos GO once the issue is resolved.