Display shows dashes (– –) or blank temperature reading, spa does not heat.

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.

Possible Causes

Temperature sensor unplugged from board, Broken sensor wire, Failed sensor, Control board not detecting sensor

Safety: Disconnect power before opening the control pack.

Check sensor connection: Locate the temp sensor plug on the control board and ensure it is fully seated.
Inspect cable: Follow the cable to the heater tube and look for breaks or damage.
Replace sensor: If the cable is damaged or the sensor tests open with a meter, replace it with a compatible LA Spas temperature sensor.

Medium 3/5

Spa Temperature Sensor

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