90Samsung ElectronicsCheck Operation & Amount of Refriherant Automatically Checking7) Main EEV■ Inspection item : Main EEV of Outdoor Unit.(Automatic Commissioning : Heating only )■ Error code: None (The resulting report "Undetermined")■ Determine the Main EEV operation status of the each Outdoor Unit.■ If the judgment of Main EEV is "Undetermined" : Checking in accordance with the following order.■ Main EEV coil resistance value based (Measured temperature is 20°C)YesCheck the Valve and Pressure sensor.YesNoCommissioning results, is Valve andPressure sensor normal?Is Main EEV connector normal?Replace Hub PCB.YesIs Main EEV coil normal?(Resistance, wire breaking,operation impossible, etc.)PCB Output signal normal?Replace Main EEVCompleteYesNo Confirmation and Measures.No Replace Coil.NoMain EEV Coil Voltage(VDC)between thephase (Ω)1-3 Automatic Commissioning Error CodeDivision Error Code Description RemarkDedicated Error CodeE503 Service Valve is closed Refer to "Service Valve"E505 High pressure sensor breakdown Refer to "High/Low pressure sensor(Module installed)"E506 Low pressure sensor breakdown※ Other error codes : Refer to Service Manual.
