E121, E122, E123 - Indoor temperature sensor error (Room, EVA IN, EVA OUT)

Was bedeutet E121, E122, E123 ?

The indoor unit's room temperature sensor (E121), evaporator inlet sensor (E122), or evaporator outlet sensor (E123) is reporting a short circuit or an open circuit. This means the sensor is not functioning correctly.

• Loose sensor connector
• Faulty temperature sensor
• Damaged wiring to the sensor

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Turn off the air conditioner's power at the circuit breaker.

2. 2

   Locate the specific temperature sensor (room, EVA IN, or EVA OUT) for the indoor unit.

3. 3

   Carefully check the sensor's connector to ensure it is securely plugged in.

4. 4

   Visually inspect the sensor wire for any damage or breaks.

5. 5

   If the issue persists, a technician may need to check the sensor's resistance value or replace the sensor.