E16
U.S. Motors
Incorrect Motor Wiring / Configuration Error
U.S. Motors variable-speed pool pump displays E16 and refuses to start; may occur after incorrect wiring 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
Motor leads miswired at terminal block, Incorrect voltage selection jumpers on dual-voltage U.S. Motors motor, Reversed line and load connections on drive, Internal configuration mismatch between motor and drive
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker and verify with a meter before touching any terminals.
- Compare to wiring diagram: Open the motor terminal box and compare all connections to the wiring diagram on the U.S. Motors motor nameplate. Correct any miswired leads.
- Verify voltage selection: On 115/230V motors, ensure the jumper links are set for the actual supply voltage. Incorrect jumper placement can trigger E16.
- Check line/load orientation: If a separate drive is used, confirm that the incoming line is on the correct terminals and the motor is on the designated load terminals.
- Reset configuration: In the controller menu, verify the motor type and HP settings match the installed motor. Correct any mismatches and save.
- Test after correction: Restore power and attempt a low-speed start. If E16 persists with correct wiring, the drive may have an internal configuration fault and require replacement.
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Repair Difficulty
Medium
3/5
Required Part
U.S. Motors Pool Pump Motor
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