Category Archives: Mini split heating and cooling air conditioner heat pump systems

Causes and Fixes Samsung Mini Split E123 Error Code

E123 error code is an Indoor heat exchanger air temperature sensor error. Causes include a faulty air temperature sensor or heat exchanger sensor open/short. Poor connections or damaged wiring between the sensors and the control board will also cause issues. Extreme temperatures or humidity levels can affect the performance of the sensor, leading to errors… Read More »