Samsung AM036NXMDCR - Troubleshooting Main EEV Operation

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Samsung Electronics
Check Operation & Amount of Refriherant Automatically Checking
7) 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)
Yes
Check the Valve and Pressure sensor.
Yes
No
Commissioning results, is Valve and
Pressure sensor normal?
Is Main EEV connector normal?
Replace Hub PCB.
Yes
Is Main EEV coil normal?
(Resistance, wire breaking,
operation impossible, etc.)
PCB Output signal normal?
Replace Main EEV
Complete
Yes
No
Confirmation and Measures.
No
Replace Coil.
No
Main EEV Coil
Voltage
(VDC)
between the
phase (Ω)
1-3 Automatic Commissioning Error Code
Division Error Code Description Remark
Dedicated Error Code
E503 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.