Applicable Systems
MAGNA1
Symptoms
Phase loss. One or more phases of the three-phase supply are missing.
Possible Causes
- Phase wire disconnected or breaker tripped
- Phase fuse blown
Troubleshooting Steps
- Step 1: Check all three phase voltages at the pump
One or more phases are missing - Step 2: Restore the missing phase connection or fuse
All phases are present
How to Reset
To reset: Restore all phases, then reset the controller.
Source: Grundfos Pump Troubleshooting Guide, Grundfos Group
Category: Pump