E10
U.S. Motors
Internal Drive Fault / Self-Test Failure
U.S. Motors digital pool pump displays E10 and stops; may occur when starting or during speed changes.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Corrupted firmware on drive module, Internal short on IGBT or power transistor, Failed low-voltage logic supply, Control board component failure
How to Fix / Troubleshooting
Safety first: Turn off power and wait several minutes for internal capacitors to discharge before removing the drive cover.
- Power cycle: Turn the breaker OFF for at least 2 minutes, then ON. Attempt to clear E10 via the controller interface.
- Inspect for visible damage: Remove the drive/control cover and look for burned components, bulging capacitors, or scorch marks on the U.S. Motors drive board.
- Check for moisture or corrosion: Ensure the enclosure is dry and free of corrosion. Address any water ingress issues.
- Reset to factory defaults: If the controller allows, perform a factory reset per the U.S. Motors manual. Reprogram speed schedules and test.
- Replace drive module: If E10 persists after reset and there are signs of board damage or no obvious external cause, replace the pump control board/drive module. This is typically not field-repairable at component level.
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Repair Difficulty
Hard
4/5
Required Part
Pump Control Board / Drive Module
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