Pahlen Electrical Short or Ground Fault

Pahlén pool pump trips the circuit breaker or RCD/GFCI shortly after starting

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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

Water inside motor terminal box, Shorted motor windings, Damaged power cable to Pahlén pump, Incorrect breaker size or type

How to Fix / Troubleshooting

Safety first: Do not repeatedly reset a tripping breaker. Isolate power and treat this as a potential shock hazard.

  • Visual inspection: Check the motor terminal box and cable entry for signs of water, corrosion, or burnt insulation. Dry and repair as needed.
  • Check cable condition: Inspect the entire length of the pump power cable for cuts, abrasions, or crushed sections. Replace damaged cable.
  • Verify breaker rating: Confirm that the breaker and RCD/GFCI ratings match Pahlén's recommendations for the pump model.
  • Professional testing: Have a technician perform insulation resistance and current draw tests. A shorted motor will require replacement.
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Repair Difficulty

Professional Required 5/5

Required Part

Pump Power Cable
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