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8 Troubleshooting
8 Troubleshooting
8.1 The unit does not work
Make sure that all wires are correctly connected according to the cable chart.
Cause
The PWR LED is not lit.
The unit does not communicate with the pump.
If the problem persists, then contact a sales or authorized service
representative.
Always state the product number and the serial number of the product.
24
Remedy
APP 411 Installation, Operation, and Maintenance manual
• Make sure that the unit receives voltage.
• Restart the unit.
• Make sure that the pump receives voltage.
• Restart the pump and the unit.
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