Samsung DH052EZM1 Service Manual

Contents

Control Specification & Troubleshooting37Samsung ElectronicsError about protectioncontrol of outdoor unitErrors about outdoor unit sensor(OPEN/SHORT)Detection during theoperation of indoor unit(Sensing and sending errorsinto the communication data)Communication andindoor unit errorsSelf-diagnosis of indoor andoutdoor unit (x:indoor unitaddress)Displays of operating statusxFlickerFlickerK1, K2, K3, K4,K5 FlickerxxxHigh temperature of Discharge (Protection control)High temperature of outdoor heat exchanger (Protection control)Reverse phase error (Protection control)COMP DOWN to protect being frozenIn removing frostError of OUT TEMP sensor (OPEN/SHORT)Error of temperature sensor in outdoor heat exchanger (OPEN/SHORT)Error of Discharge TEMP sensor (OPEN/SHORT)System Down caused by communication error aftercompletion of trackingMismatching of the indoor unit numbers set with thosecommunicated after completion of trackingError of float switch in indoor unitError of setting option switches for optional accessoriesOPEN/SHORT error of room sensor in indoor unitOPEN/SHORT error of eva in sensor in indoor unitEEPROM option errorError of fan startingOpen error of electronic expansion valve in outdoor unit(Detected once or more times)Close error of electronic expansion valve in outdoor unit(Detected once or more times)Below -5°C when cooling (Outdoor temperature)Over 30°C when heating (Outdoor temperature)The order of priority : E1 → E2 → E3 → E5 → P0 → P1 → P4 → P5 → P9 → t1 → t2 → t3 → tu → to → G4 → G5 → E3 → qx → rx → vx →K1, K2, K3, K4, K5The order of priority : - In case that the same error displays from multi-indoor units, the one having the faster address has the priority.RemarkDisplay Explanation5-2-3 Outdoor UnitIf an error occurs during the operation, it is displayed on the outdoor unit PCB.