Samsung AM080BXMDGH/EU Service Manual

Test Operation9-6Samsung Electronics3) High / Low pressure sensor (Module installed)■ High/Low Pressure sensor of each of the outdoor unit that module is installed.■ Error code of High Pressure sensor : E505 (The resulting report "Undetermined")Error code of Low Pressure sensor : E506 (The resulting report "Undetermined")■ Determine the status of the High/Low Pressure sensor of the each Outdoor Unit installed before the compressor start.■ If the judgment of Outdoor Unit High/Low Pressure sensor is "Undetermined" : Checking in accordance with the fol-lowing order.YesConfirmation and MeasuresNoIs Pressure sensor connector properly connect?YesReplace PCBNoIs voltage 5V between 3, 4 pinof PCB Pressure sensor terminal?YesReplace Pressure sensorNoIs deviation of outdoorunit as following?"High pressure Max/Min deviation : less than 2"Off the vacuum mode(All of the Outdoor Unit)Check the Pressure sensor breakdownCompleteVacuum mode (All of the Outdoor Unit)※ Check the Pressure sensor breakdown after the saturation pressureof the outdoor temperature or connect the manifold gauge to check the pressure.YesIs Service Valve open stateof installed module? (Each Outdoor Unit ) No Service Valve opening of the Outdoor Unit[Caution]- If the judgment of Pressure sensor "Undetermined" :Display the error to all of the Outdoor Unit and then Auto Trial Operation is exited. (Stop the overall system)