Error 129 — EVA OUT temperature sensor detached

What does 129 mean?

The evaporator outlet (EVA OUT) temperature sensor in the indoor unit has become physically detached from the EVA OUT pipe. This leads to inaccurate refrigerant temperature readings and potentially improper system operation.

• Sensor poorly secured during installation
• Physical impact or environmental factors
• Damaged sensor retaining clip

Click steps to track your progress.

1. 1

   Switch off the power supply to the indoor unit at the main electrical panel.

2. 2

   Find the EVA OUT sensor and ensure it is firmly reattached to the EVA OUT pipe.

3. 3

   Verify that all mounting hardware for the sensor is correctly in place and tightened.

4. 4

   Turn the power back on and monitor the unit for the error to disappear.

5. 5

   If reattachment is not possible or the error recurs, professional assistance may be required.