Troubleshooting50Samsung Electronics3-13 Outdoor temperature sensor error(Open/Short)(Error Code : E221, E231, E251, E269, E276, E311 E321, E322, E323)1. Check items1) Check the temperature sensor connector2) Check the resistance value of outdoor temperature2. Check procedureError code Error explanation Error code Error explanationE221 Outdoor air temperature sensor error E311 Double tube temperature sensor errorE231 Cond temperature sensor error E321 EVI(ESC) IN temperature sensero errorE251 Discharge temperature sensor error E322 EVI(ESC) OUT temperature sensero errorE269 Suction temperature sensor error E323 Suction2 temperature sensor errorE276 Comp. top temperature sensor errorTurn off the powerNoYesYesNoIf the resistance value measureon temperature sensor similar to the values onthe table on the right side?Check if everything is normal and end serviceNoYesChange the outdoor unit PBA → Turn on the power →Check if everything is normal and end serviceIs the temperature sensorconnector properly connected?If the resistance value measureon temperature sensor similar to the valueson the table on the right side?Connect the temperature sensor connectorChange the temperature sensor → Turn on thepower → Check if everything is normal and endservice(Ex.) Resistance value for temperatures measured by Cond. Sensor/outdoor temperature sensor : E221, E231, E269, E311, E321, E322, E323(Ex.) Resistance value for temperatures measured by OLP Sensor/Discharge sensor: E251, E276CurrentTemp. (°C)Resistance(kΩ)CurrentTemp. (°C)Resistance(kΩ)70 4 20 1060 5 10 2050 6 0 3040 7 -10 4030 8CurrentTemp. (°C)Resistance(kΩ)CurrentTemp. (°C)Resistance(kΩ)80 40 30 18070 50 20 22060 60 10 32050 90 0 55040 110Ex) Temperature 26°C –Resistance 10.28kΩEx) Temperature 21°C –Resistance 205.4kΩOLP sensor: 200kΩ at 25°CDischarge sensor: 200kΩ at 25°CCOND. sensor: 10kΩ at 25°COutdoor unit temperature sensor: 10kΩ at 25°COLP : 200Kohm at 25°CD-tube : 10Kohm at 25°CCheck the CN43 connectionCheck the CN44 connection
