Avenli Temperature Reading Offset

Display shows temperature but water feels much cooler or warmer than indicated.

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Possible Causes

Sensor not fully immersed in water flow, Sensor aged or drifted, Poor thermal contact with heater tube, Incorrect replacement sensor value

How to Fix / Troubleshooting

Safety first: Unplug the spa before adjusting sensor placement.

  • Verify with external thermometer:
    • Measure water temperature with a reliable waterproof thermometer.
  • Adjust sensor placement:
    • Ensure the water temperature sensor is firmly clamped to the heater tube or fully inserted into its well.
  • Replace sensor:
    • If offset remains large (>2–3°C), install a new Avenli water temperature sensor.
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Repair Difficulty

Easy 2/5

Required Part

Water Temperature Sensor
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