Michael Phelps Spas Overheating Electrical Component or Pump

Strong chemical or burning plastic smell from equipment bay

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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

Pump motor overheating due to seized bearings, Loose electrical connections causing arcing, Control board component failure, Melted wiring insulation

How to Fix / Troubleshooting

Safety: Immediately turn OFF power at the breaker and do not use the spa until the source is identified.

  • Visual inspection: Open the equipment bay and look for discoloration, melted plastic, or smoke residue on pumps, wiring, and the control pack.
  • Check pump motors: Feel for excessive heat (after cooling) and listen for grinding or humming when last operated.
  • Tighten connections (qualified only): Loose lugs at the control pack or breaker can overheat. Have a qualified technician tighten and inspect all high-current connections.
  • Replace damaged components: Any burned pump, wiring harness, or control board should be replaced with OEM Michael Phelps/ Master Spas-compatible parts.
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Repair Difficulty

Professional Required 5/5

Required Part

Jet Pump Motor or Control Pack
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