Internal fault (84) - Pump has a minor internal malfunction (warning)

What does 84 mean?

The pump has detected a minor internal fault, indicated by warning code 84. Normal pump operation might not be immediately affected, but it signals a potential developing issue that should be monitored.

• An internal component issue within the pump that does not yet prevent full operation.
• Early signs of wear or a minor sensor malfunction.

Click steps to track your progress.

1. 1

   Connect to the Grundfos GO Remote app and check for the warning code 84 under 'Alarms and warnings'.

2. 2

   Monitor the pump's operation and performance closely for any changes or worsening symptoms.

3. 3

   If the warning persists or escalates to a critical alarm, contact Grundfos Service for further assistance.

4. 4

   The manual suggests replacing the pump if the internal fault cannot be resolved by service.