Hayward PowerFlo Thermal Overload Cycling

Hayward PowerFlo pump cycles on and off by itself every few minutes.

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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

Overheating PowerFlo motor due to restricted ventilation, High system backpressure, Incorrect voltage or loose connections, Failing internal thermal protector

How to Fix / Troubleshooting

Safety first: Turn off power before inspection.

  • Improve cooling: Ensure the PowerFlo pump is in a shaded, well-ventilated area. Clear debris from motor vents.
  • Reduce load: Clean/backwash the filter and open all valves to reduce system pressure.
  • Check wiring: Inspect connections at the motor terminal block for looseness or discoloration. Tighten as needed.
  • Monitor operation: After corrections, run the pump and monitor temperature. If cycling continues, the motor’s thermal protector may be failing and the motor should be replaced.
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Repair Difficulty

Medium 3/5

Required Part

PowerFlo motor assembly
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