4-14 Samsung Electronics
Indoor unit display
(Operation) X (Defrost)
X (Timer)
(Fan)
(Filter)
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.
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