U.S. Motors
Overheating Motor / Continuous Overload
U.S. Motors pool pump runs but trips the breaker or thermal overload after 5–30 minutes of operation.
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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
High mechanical load from partially blocked impeller, Worn motor bearings increasing friction, Incorrect voltage (115V wired to 230V motor or vice versa), Restricted ventilation around motor frame
How to Fix / Troubleshooting
Safety first: Turn off power and allow the motor to cool before touching it.
- Check filter and hydraulics: Clean the pump basket and skimmer baskets. Backwash or clean the filter to reduce system head pressure.
- Inspect impeller: Disassemble the wet end and check the impeller for debris or scale buildup. Clean thoroughly.
- Check bearings: Spin the motor shaft by hand. Roughness, grinding, or side play indicates failing bearings. Replace the U.S. Motors motor if bearings are bad.
- Verify wiring and voltage: Confirm the motor is wired for the correct supply voltage per the nameplate. Measure actual voltage at the motor terminals under load.
- Improve ventilation: Ensure the motor cooling vents are not blocked by debris and that the motor is not enclosed in a tight, unventilated box.
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Repair Difficulty
Medium
3/5
Required Part
U.S. Motors Pool Pump Motor
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