Applicable Systems
MAGNA1
Symptoms
Overload. The pump motor current exceeds the rated value and the overload protection has activated.
Possible Causes
- Pump mechanical seizure or bearing failure
- Liquid density or viscosity too high
Troubleshooting Steps
- Step 1: Check the motor current with a clamp meter
Current exceeds the rated value - Step 2: Inspect the pump for mechanical seizure
Pump is seized or bearing is damaged
How to Reset
To reset: Fix the mechanical or liquid issue, then reset the overload.
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Source: Grundfos Pump Troubleshooting Guide, Grundfos Group
Category: Pump
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