Coway CHP-01AL, Manual

Page: 28 / 64

27
Electric Part
Trouble Shooting
YES YES
YES
YES
Trouble
Trouble Shooting
Trouble Mode
What to Do
F
licker
in
g
All
w
a
te
r l
e
v
e
r s
e
n
s
or
Is
th
e input
v
o
ltag
e DC
5
V
? ( Mi
com
8th pin)
NO
NO
NO
Op
er
a
ting v
o
ltag
e
of
w
a
te
r l
e
v
e
l
s
e
n
sor high
(Micom
5
th
pin
)
-
Lev
e
l high
O
N
: 0
.5Vdc
-L
ev
el hi
g
h
O
FF:2.
5
V
d
c
-C
onnecto
r OPEN
:5.0Vdc
NO
Is
th
e
comm
on
w
ir
e
of
w
a
te
r l
e
v
e
l
s
e
nso
r high
sho
rt or di
s
c
onne
cted
?
Is
the signal of
w
a
ter
le
v
e
l sensor
high
exact
?
(lev
el high
ON :
0
Ω
, lev
e
l high
OFF :
∝
)
Is the v
o
ltage v
a
lue
of P
CB MICOM
5
th pin
same
w
it
h
ta
b
le
3
?
C
h
eck a
fter
re
p
lacin
g
PCB
Is
th
e
w
a
te
r l
e
v
e
l
s
e
n
so
r
high open ?
Infe
rior conn
e
c
to
r
Infe
rior inpu
t po
w
e
r
Infe
rior w
a
te
r
le
v
e
l
s
e
n
sor
high
Che
c
k
th
e
input
po
w
e
r
Conne
ct
conn
e
c
to
r to
PCB
CN 1
8
th
R
e
place t
h
e
w
ir
e
of s
e
n
s
or
Infe
rior co
m
m
on
w
ir
e
sens
o
r
Inferior m
a
in PCB
ci
rc
uit
YES
NO
R
e
place t
h
e
w
a
ter
le
ve
l se
ns
or
h
ig
h
R
e
place PCB
Ta
bl
e
3