Lifesmart Spas Sensor Placement / Stratification Issue

Control panel shows temperature but spa never reaches that temperature and shuts off heating early.

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 located in area with poor mixing, Circulation pump not running enough, Air lock near sensor, Incorrect sensor type installed

Safety first: Turn off power before adjusting sensors or plumbing.

Verify circulation: Ensure the circulation pump is running during heating and that water is moving past the heater return.
Bleed air: Remove air from the heater and nearby plumbing to ensure water contacts the sensor.
Stir water: Temporarily run jets to mix water and see if the displayed temperature changes significantly.
Sensor check: Confirm that the correct OEM sensor is installed in the proper location on the heater tube.

Medium 3/5

Water Temperature Sensor (Thermistor)

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