Auto Trial Operation Error Code - Samsung AM072/096/120/144FXVAFH Service Manual

10) Main EEV
Inspection item : Main EEV of Outdoor Unit.(Auto Trial Operation : 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.
Auto Trial Operation results,
is Valve and Pressure sensor normal?
Is Main EEV connector normal?
Is Main EEV coil normal?
(Resistance, wire breaking, operation
impossible, etc.)
Is PCB Output signal normal?
Replace Main EEV
Complete

9-1-4 Auto Trial Operation Error Code

Division Error Code
Dedicated Error Code
Other error codes : Refer to Service Manual.
Samsung Electronics
Yes
Yes
Yes
Yes
※ Main EEV coil resistance value based (Measured temperature is 20°C)
Main EEV Coil
Description
E503 Service Valve is closed
E505 High pressure sensor breakdown
E506 Low pressure sensor breakdown
No
Check the Valve and Pressure sensor.
No
Confirmation and Measures
No
Replace Coil
No
Replace Hub PCB
Operating Resistance of
Voltage between the
(VDC)
phase (Ω)
Refer to "Service Valve"
Refer to "High / Low pressure sensor
Test Operation
Remark
(Module installed)"
9-13