E9 / Code 25 — Incorrect PWM configuration

What does 25 mean?

The warning and alarm symbol flashes yellow, and the pump continues to run. This means the pump is receiving a signal via the PWM input, but the PWM configuration is either missing or incomplete.

• The PWM configuration is missing or not finished.
• The pump is not set to externally controlled (PWM mode).

Click steps to track your progress.

1. 1

   Ensure the pump is correctly set to externally controlled (PWM mode).

2. 2

   Finalise the PWM configuration via the 'Settings' menu in the Grundfos GO app.

3. 3

   If the pump is a replacement, use the 'GO Replace' tool to replicate the configuration of the pump it replaced.

4. 4

   Reset the warning via Grundfos GO once configuration is complete.