Pahlen Overheating Under Load

Pahlén pool pump is unusually hot to the touch but still running

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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 motor ventilation, High ambient temperature, Overloaded pump due to high head, Incorrect supply voltage

How to Fix / Troubleshooting

Safety first: Turn off power and allow the motor to cool before handling. Do not cover the motor or restrict airflow.

  • Improve ventilation: Clear debris from around the Pahlén motor and ensure cooling fins and fan openings are unobstructed.
  • Reduce system resistance: Clean the filter and fully open valves to reduce head pressure.
  • Check supply voltage: Have an electrician verify that voltage is within the motor's rated range.
  • Monitor temperature: After corrections, run the pump and periodically check that the motor is warm but not too hot to touch briefly.
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Repair Difficulty

Medium 3/5

Required Part

Pump Motor Assembly
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