Samsung AM072/096/120/144FXVAFH, Service Manual

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Test Operation
Samsung Electronics 9-13
10) Main EEV
Ŷ
Inspection item : Main EEV of Outdoor Unit.(Auto Trial Operation : Heating only )
Ŷ
Error code: None (The resulting report "Undetermined")
Ŷ
Determine the Main EEV operation status of the each Outdoor Unit.
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If the judgment of Main EEV is "Undetermined" : Checking in accordance with the following order.
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
ఐ͑
Other error codes : Refer to Service Manual.
Yes
Check the Valve and Pressure sensor.
No
Auto Trial Operation results,
is Valve and Pressure sensor normal?
Yes
Confirmation and Measures
No
Is Main EEV connector normal?
Yes
Replace Coil
No
Is Main EEV coil normal?
(Resistance, wire breaking, operation
impossible, etc.)
Yes
Replace Hub PCB
No
Is PCB Output signal normal?
Replace Main EEV
Complete
※ Main EEV coil resistance value based (Measured temperature is 20°C)
Main EEV Coil
Operating
Voltage
(VDC)
Resistance of
between the
phase ( Ω )
9-1-4 Auto Trial Operation Error Code