Applicable Systems
MAGNA1
Symptoms
Internal fault. The pump controller has detected an internal hardware or firmware fault.
Possible Causes
- Controller hardware component failure
- Firmware corruption or crash
Troubleshooting Steps
- Step 1: Check the controller fault log
Specific internal fault is identified - Step 2: Power-cycle the controller; if the fault persists, replace the controller
Controller restarts or is replaced
How to Reset
To reset: Power-cycle the controller. If the error persists, replace the controller.
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Source: Grundfos Pump Troubleshooting Guide, Grundfos Group
Category: Pump
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