Lowara
Thermal Overload Trip (Mechanical or Electrical Overheating)
Pump starts but stops after a few minutes, motor feels very hot to touch
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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
Blocked ventilation on motor, High ambient temperature, Overloaded pump due to high head, Failing motor bearings, Incorrect voltage or phase imbalance
How to Fix / Troubleshooting
Safety first: Allow the motor to cool before handling. Isolate power.
- Clear ventilation: Clean dust, leaves, and debris from the motor fan cover and cooling fins.
- Check installation: Ensure the Lowara pump is not enclosed in a tight, unventilated box. Provide adequate airflow.
- Verify hydraulics: Confirm that valves are correctly set and that the pump is not dead‑heading against a closed valve or undersized piping.
- Check bearings: Rotate the shaft by hand. Any grinding or stiffness indicates bearing wear.
- Electrical checks: Have a technician measure running current on each phase and compare to the nameplate. High current suggests overload or internal motor issues.
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Repair Difficulty
Medium
3/5
Required Part
Lowara pool pump motor
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