Navien NP-180, Руководство по обслуживанию

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©N
avien
Am
eri
c
a
I
n
c
. 20
1
0
NR/NP
series servi
c
e Manua
l
113
Versi
o
n 2.0
Check method
Check method Cause Error type
Ma
lf
un
c
ti
o
n
D
e
f
e
c
tive
p
u
mp
D
e
f
e
c
tive
flow
sens
o
r
D
e
f
e
c
tive
p
u
mp
Ch
e
c
k t
h
e
c
urrent
flow d
is
pl
a
y
e
d o
n t
h
e
PCB (15
.
66
ȥ
15
.
66 g
a
l/m
in
)
.
Th
e
flow
sens
o
r is
d
e
f
e
c
tive i
f
t
h
e
w
ater
flow d
is
pl
a
y
e
d
is 00.0
wh
en
w
ater is
d
is
ch
ar
g
e
d f
r
om
t
h
e
ho
t
w
ater ta
p
.
1
.
Ch
e
c
k i
f
t
h
e
p
u
mp wo
rks n
o
r
m
a
lly
.
2.
Ch
e
c
k t
h
e
p
u
mp pow
er
c
a
bl
e
co
nne
c
t
o
r an
d
i
f
t
h
e
w
irin
g
is
p
er
fo
r
m
e
d
n
o
r
m
a
lly
.
3
.
Ch
e
c
k t
h
e
pow
er su
pply (AC 1
02
~13
2 V
)
.
4
.
Ch
e
c
k
fo
r air in t
h
e s
y
ste
m
.
O
t
h
er tr
o
u
bl
e
D
e
f
e
c
tive
PCB
If
t
h
e tr
o
u
bl
e
co
ntinues
d
es
p
ite t
h
e
ch
e
c
kin
g of
a
bo
ve ite
m
s
,
t
h
e
PCB
is
d
e
f
e
c
tive.
<
Water
l
eak sens
o
r
w
ire
: Bl
ue 2
P>
< C
ir
c
u
l
ati
o
n
p
u
mp > < C
ir
c
u
l
ati
o
n
p
u
mp w
ire
: Bl
ue 2
P >