Samsung SH09BPD Service Manual

Also see for SH09BPD: Owner's instructions

Contents

Samsung SH09BPD Service Manual Manual pdf 28 page image

27Samsung Electronics6-4 Fault Diagnosis of Major Parts• Indoor "Temp.Sensor"• Indoor "Heat ex. Sensor"• Outdoor "Temp.Sensor"• Outdoor "Deice Temp. Sensor"• Outdoor "DischargeTemp.Sensor"• Outdoor "OLP Temp.Sensor"Indoor Fan MotorOutdoor Fan MotorStepping Motor(UP/DOWN swing motor)Stepping Motor(FRONT GRILLE motor)Measure resistance with a tester.NormalAbnormal ∞, OΩ … open or shortNormalAbnormal ∞, OΩ … open or shortMeasure the voltage between terminals (CN72) with a testerNormal At ambient temperature (10°C ~ 30°C)AbnormalMeasure the voltage between ground and signal wire of the fan motorNormalAbnormal Abnormal if voltage does not change from 0V to 5V.Normal At ambient temperature (10°C ~ 30°C)Abnormal ∞, OΩ … open or shortMeasure resistance between red wire and each terminal.Normal Approx. 290Ω at ambient temperature (20°C ~30°C)Abnormal ∞, OΩ … open or shortMeasure resistance between red wire and each terminal.Normal Approx. 110Ω at ambient temperature (20°C ~30°C)Abnormal ∞, OΩ … open or shortDiagnosisPartAmbient temperature 15°C 20°C 25°C 30°C 35°C 40°CResistance of 14.68 12.09 10 8.31 6.94 5.83thermistor[KΩ]Ambient temperature 0°C 10°C 20°C 30°C 40°C 50°CResistance of 553 362 242 166 165 82thermistor[KΩ]between Voltage[V]Red, Blue 410±10% MainRed, Yellow 325±10% Subbetween VoltageGray, Orange 0.5V~4.5VYellow, Orange 5Vbetween Resistance[Ω]Black, Red 275±10% MainBlack, Yellow 350±10% Sub