84Samsung ElectronicsCheck Operation & Amount of Refriherant Automatically Checking1-2 How to troubleshoot of the "Undetermined"1) Indoor Unit Temperature sensor■ Inspection item : Indoor temperature of each Indoor Unit, EVA In / Out Temperature sensor■ Error code: None (The resulting report "Undetermined")■ Determine the status of the Temperature sensor of the Indoor Unit installed before the compressor start.■ Commissioning methods[Caution]- If the Outdoor Unit with a history of operation (Automatic commissioning inclusion) : Must be carried out Automatic Commissioning after 1hour from final operation stopped.Blast operation for more than 10 minutesYesIndoor Temperaturesensor setting(Remotecontrol → indoor unit)NoIs deviations of the Indoor Unit Temperaturesensors, more than 10℃?NoNoIs Indoor temperature of the Indoor Unit bywired remote control setting?Check the breakaway of sensor or replace PCBDoes Temperature sensor connection wire ofOutdoor Unit properly connect?YesIs Outdoor Unit Temperature sensorresistance value normal?YesIs deviations of the Indoor Unit Temperaturesensors, less than 10℃?CompleteConfirmation andMeasuresNo Replace sensor[DischargeTemperature sensorresistance value]Temperature(℃)Resistance(Ku)706050403020100-102.23.04.25.88.312.118.027.343.0※ Resistance measurement method Afterseparating the Temperature sensorconnector from the PCB, measure theresistance value between the twoterminals.
