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
115
Versi
o
n 2.0
Check method
Check method Cause Error type
No ho
t
w
ater
flow
s
cold w
ater
su
pply
err
o
r
1
.
Ch
e
c
k i
f
t
h
e s
y
ste
m op
ens
/clo
ses t
h
e
cold w
ater va
l
ve an
d
t
h
e
ho
t
w
ater
o
ut
p
ut va
l
ve
p
r
op
er
ly
.
2.
Ch
e
c
k i
f
t
h
e
cold w
ater
l
ine is
f
r
oz
en.
3
.
Ch
e
c
k i
f
t
h
e
cold w
ater
fil
ter is
clogg
e
d
.
Water
h
eater
n
o
t
wo
rkin
g
D
e
f
e
c
tive
flow
sens
o
r
5
.
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
)
.
If
t
h
e
flow
sens
o
r is
d
e
f
e
c
tive
,
t
h
e
d
is
pl
a
y
e
d flow
va
l
ue is 00.0
wh
i
l
e
w
ater
flow
s
f
r
om
t
h
e
ho
t
w
ater ta
p
.
D
isasse
mbl
e t
h
e
flow
sens
o
r
, blow
air
w
it
h mo
ut
h
.
Th
e
h
a
ll
sens
o
r
of
t
h
e
flow
sens
o
r is
d
e
f
e
c
tive i
f
t
h
e i
mp
e
ll
er r
o
tates an
d d
is
pl
a
y
re
m
ains 0.00.
6
.
Ch
e
c
k
co
nne
c
t
o
r asse
mbly
an
d co
nta
c
t
of
t
h
e
flow
sens
o
r.
7
.
Ch
e
c
k t
h
e in
p
ut v
ol
ta
g
e
of
t
h
e
flow
sens
o
r.
Op
eratin
g
v
ol
ta
g
e
(Bl
a
c
k
+R
e
d) : D
e
f
e
c
tive
PCB
i
f DC 5
V is
n
o
t su
ppl
ie
d
.
8
.
R
e
pl
a
c
e t
h
e
flow
sens
o
r i
f
n
o flow
is
d
ete
c
te
d wh
i
l
e t
h
e
op
eratin
g
v
ol
ta
g
e is n
o
r
m
a
l
.
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
Em
er
g
en
cy m
easures
a
g
ainst
d
e
f
e
c
tive
flow
sens
o
r
R e pl ace m en t of p ar t t a k e s th e p ri o ri ty i f an err o r o ccur s in th e flow s en so r .
If i t i s i mposs i bl e to re pl ace th e p ar t, t a k e th e follow in g e m er g enc y m ea s ure s
Th
e
C
H
flow
sens
o
r r
o
t
o
r is
comp
ati
bl
e
w
it
h
t
h
e
NR/NP flow
sens
o
r.
If
t
h
e
flow
sens
o
r r
o
t
o
r is stu
c
k
d
ue t
o fo
rei
g
n su
b
stan
c
e
D
isasse
mbl
e t
h
e
flow
sens
o
r
, blow w
it
h mo
ut
h
t
o
t
h
e ri
gh
t
d
ire
c
ti
o
n.
If
t
h
e i
mp
e
ll
er
do
es n
o
t r
o
tate
, d
isasse
mbl
e t
h
e i
mp
e
ll
er
,
an
d
re
mo
ve
fo
rei
g
n
su
b
stan
c
e
b
e
fo
re reasse
mbl
in
g
it.
If
t
h
e
flow d
is
pl
a
y
e
d o
n t
h
e
PCB
is 00.0
,
an
d
t
h
e i
mp
e
ll
er r
o
tates
wh
en
yo
u
blow
it
,
t
h
e
h
a
ll
sens
o
r
of
t
h
e
flow
sens
o
r is
d
e
f
e
c
tive.
Th
e
h
a
ll
sens
o
r is su
b
stitute
d by
t
h
e
C
H
flow
sens
o
r.
>> Pl
ease
cl
ari
fy
t
h
is
p
r
oc
e
d
ure