Applicable Systems
MAGNA1
Symptoms
Power supply fault. The controller internal power supply has failed.
Possible Causes
- Internal power supply component failure
- Power supply fuse blown
Troubleshooting Steps
- Step 1: Check the internal power supply output voltage
Output voltage is absent or too low - Step 2: Replace the power supply or fuse
Power supply operates normally
How to Reset
To reset: Replace the power supply or fuse, then reset the controller.
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Source: Grundfos Pump Troubleshooting Guide, Grundfos Group
Category: Pump
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