Caldera Spas Lighting Circuit or LED Failure

Spa lights do not turn on, or some LEDs are out while others work.

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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

Failed LED light module, Loose light harness connection, Blown low-voltage fuse on control board, Failed light driver on IQ control board

How to Fix / Troubleshooting

Safety first: Turn off power at the GFCI breaker before accessing lighting components.

  • Check settings: Ensure the light function is enabled on the topside control and brightness is not set to minimum.
  • Inspect connections: Locate the low-voltage light harness connections at the control board and verify they are secure.
  • Check fuse: Inspect any low-voltage or accessory fuses on the IQ control board and replace if blown with the same rating.
  • Replace LED module: If only one light is out, replace that LED module or light assembly with a Caldera-compatible part.
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Repair Difficulty

Medium 3/5

Required Part

LED Light Module
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