Applicable Systems
MAGNA1
Symptoms
Motor fault. The pump motor has a fault detected by the controller.
Possible Causes
- Motor winding failure or degradation
- Motor bearing failure causing drag
Troubleshooting Steps
- Step 1: Check the motor winding resistance and insulation
Winding is shorted or insulation is degraded - Step 2: Inspect the motor bearings for wear
Bearings are worn or damaged
How to Reset
To reset: Repair or replace the motor, then reset the controller.
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Source: Grundfos Pump Troubleshooting Guide, Grundfos Group
Category: Pump
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