T
ro
ubl
eshooting
S
ams
u
ng
El
ectronics
4-21
Wire remote controller display
E422
Symptom
C
l
ogging
of
o
u
tdoor
'
s
ser
v
ice
v
a
lv
e
Failure
V
a
lv
e
c
l
og
4-3-9 Outdoor's service valve(Clog)
No
Y
es
I
s
the
o
u
tdoor
ser
v
ice
v
a
lv
e
c
l
ogged
?
Open
the
o
u
tdoor
'
s
ser
v
ice
v
a
lv
e
Rep
l
ace
the
PCB
and
restart
the
u
nit
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