Error 121 - Indoor temperature sensor error

¿Qué significa 121 ?

The indoor unit's temperature sensor is either short-circuited or open-circuited, meaning it cannot accurately read room temperature.

• Faulty temperature sensor
• Damaged sensor wiring
• Loose sensor connection to the control board

Haga clic en los pasos para seguir su progreso.

1. 1

   Inspect the indoor temperature sensor and its wiring for any visible damage.

2. 2

   Check that the sensor is securely connected to the indoor unit's control board.

3. 3

   If the sensor appears damaged or the error continues, replacement may be necessary by a technician.