Samsung AC250KNHPKH - Outdoors Service Valve(Clog)

Samsung Electronics 4-15
Wire remote controller display E422
Symptom
Clogging of outdoor's service valve
Failure
Valve clog
4-3-9 Outdoor's service valve(Clog)
NoNo
Yes Yes
Is the outdoor service
valve clogged?
Was lacking in refrigerant?
Check the normal of EVA-IN
TEMP SENSOR.
Open the outdoor's service valve Refrigerant Charge.