Samsung Electronics4-1Errormode Contents Error typeIndoor unit communication error Communication errorDuplicated address setting error Communication errorNo response error address from indoor unit Communication errorIndoor temperature sensor (open/short error) Indoor sensor errorIndoor unit Eva In sensor (Open/Short) Indoor sensor errorIndoor floating switch secondary detection Self diagnostic errorIndoor/outdoor communication error (1 min) Communication errorCommunication error between indoor/outdoorINV↔MAIN MICOM (1 min) Communication errorOutdoor temperature sensor error Outdoor sensor errorCOND temperature sensor error Outdoor sensor error[Inverter] Emission temperature sensor error Outdoor sensor errorDetection of Indoor Freezing (when Comp. Stops) Outdoor unit protection control errorProtection of Outdoor Overload (when Comp. Stops) Outdoor unit protection control errorEmission temperature excessively high Outdoor unit protection control errorHigh pressure blockage error(Refrigerant completely Leakage error) Self diagnostic errorHeating operation blocked Self diagnostic errorCooling operation blocked Self diagnostic errorOutdoor fan 1 error Self diagnostic error[Inverter] Compressor startup error Outdoor unit protection control error[Inverter] Total current error/PFC over current error Outdoor unit protection control error4. Troubleshooting4-1 Wired remote controller◆ If an error occurs, is displayed on the wired remote controller.If you would like to see an error code, press the Test button.