Caldera Spas Overheating Electrical Component

Spa water has a strong burning or electrical smell near the equipment compartment.

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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 pump motor, Failing heater element, Loose high-current connection at terminal block, Shorted ozonator

How to Fix / Troubleshooting

Critical safety: Immediately turn off power at the GFCI breaker and do not restore power until the source is identified.

  • Visual inspection: Open the equipment compartment and look for discoloration, melted insulation, or scorch marks on the heater, pumps, and wiring.
  • Check terminal block: Inspect the main power lugs on the IQ control board for signs of overheating or looseness.
  • Do not run suspect components: If a pump or heater shows signs of overheating, leave it disconnected until replaced.

Because of fire and shock risk, have a qualified spa technician or electrician inspect and repair any overheating electrical components.

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Repair Difficulty

Professional Required 5/5

Required Part

IQ Control Board
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