Grundfos Grundfos Pump Error Code 28

Grundfos Pump Major System

Model: Grundfos Pump | Code: 28

Applicable Systems
MAGNA1

Symptoms

System pressure low. The discharge pressure is below the warning threshold.

Possible Causes

  • Pump wear or impeller damage reducing performance
  • System leak reducing pressure

Troubleshooting Steps

  1. Step 1: Check the discharge pressure and pump performance
    Pressure is below normal
  2. Step 2: Inspect for system leaks or pump wear
    Leak is found or pump is worn

How to Reset

To reset: Fix the leak or pump wear, then reset the controller.

Source: Grundfos Pump Troubleshooting Guide, Grundfos Group

Category: Pump