Error 122 — EVA IN sensor error (Short or Open)

What does 122 mean?

The evaporator inlet (EVA IN) temperature sensor in the indoor unit has an electrical issue, such as a short circuit or an open connection. This affects the unit's ability to monitor refrigerant conditions.

• Damaged EVA IN sensor
• Poor connection at the sensor terminal
• Wiring fault leading to the sensor
• Corrosion on sensor connections

Click steps to track your progress.

1. 1

   Shut off power to the indoor unit from its dedicated circuit breaker.

2. 2

   Locate the EVA IN sensor and inspect its wiring for damage or loose contacts.

3. 3

   Ensure the sensor's connector is securely attached to the circuit board.

4. 4

   Check for any signs of corrosion on the sensor terminals.

5. 5

   Restore power and observe if the error clears. If not, a technician should test or replace the sensor.