Saratoga Spas Erratic Temperature Control

Water temperature fluctuates widely, sometimes too hot, sometimes too cool, without changing settings.

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

Failing temperature sensor, Poor sensor contact with heater tube, Control board temperature circuit fault, Intermittent relay contacts

Safety: Turn off power before handling sensors or control pack.

Verify sensor placement: Ensure the temperature sensor is fully inserted into its well and secured.
Compare with external thermometer: Place a thermometer in the spa and compare readings over time to the display.
Replace sensor: If readings are inconsistent, install a new Saratoga-compatible temperature sensor.

If fluctuations persist with a new sensor, the control pack may need professional evaluation.

Medium 3/5

Temperature Sensor (Thermistor)

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