Samsung AC035JNMCEH Service Manual page 58

4-7-5 Outdoor's service valve(Clog)
Indoor unit display
Wire remote controller display
Symptom
Failure
Is the outdoor service valve clogging?
Replace the PCB and restart the unit
4-32
(Operation) X (Defrost)
E422
Clogging of outdoor's service valve
Valve clog
No
X (Timer) (Fan) (Filter)
Yes
Open the outdoor's service valve
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