Applicable Systems
MAGNA1
Symptoms
RAM fault. The controller system RAM has a fault and cannot operate reliably.
Possible Causes
- RAM chip hardware failure
- Memory corruption from electrical disturbance
Troubleshooting Steps
- Step 1: Power-cycle the controller and check if the error clears
If the error persists, RAM is defective - Step 2: Replace the controller if the fault is permanent
New controller operates without error
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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