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
9
0
Versi
o
n 2.0
Off
at s
w
it
ch
of
sta
g
e
Fl
a
m
e
blowo
ut
an
d
n
o
ise
O
t
h
er tr
o
u
bl
e
D
e
f
e
c
tive air
v
ol
u
m
e sens
o
r
Fo
rei
g
n su
b-
stan
c
e
in t
h
e n
ozzl
e
D
e
f
e
c
tive
m
u
l
tista
g
e va
l
ve
D
e
f
e
c
tive
blow
er
D
e
f
e
c
tive
PCB
Th
e
fl
a
m
e is e
x
tin
g
uis
h
e
d d
ue t
o fo
rei
g
n su
b
stan
c
e in t
h
e n
ozzl
e.
D
e
f
e
c
tive sta
g
e
-1
n
ozzl
e
c
auses a
cc
i
d
enta
l fi
re at i
g
niti
o
n.
Fl
a
m
e
m
a
y b
e
blow
n
o
ut i
f
t
h
e sta
g
e is s
w
it
ch
e
d wh
en t
h
e n
ozzl
es
of
sta
g
es 2 an
d 3
are in tr
o
u
bl
e.
D
isasse
mbl
e t
h
e
m
ani
fold
an
d cl
ean t
h
e n
ozzl
e.
(R
e
mo
ve e
fflo-
res
c
en
c
e
,
i
f
an
y, f
r
om
insi
d
e
w
a
ll of
t
h
e n
ozzl
e
)
Fl
a
m
e
blowo
ut
d
ue t
o
in
c
rease
d blow
er
RP
M
c
ause
d by
air
p
ressure
sens
o
r stan
d
ar
d
va
l
ue err
o
r.
R
e
pl
a
c
e t
h
e air
p
ressure sens
o
r.
Fl
a
m
e
m
a
y b
e
blow
n
o
ut i
f
t
h
e sta
g
e is s
w
it
ch
e
d wh
en t
h
e
m
u
l
ti
-
sta
g
e
va
l
ve is
d
e
f
e
c
tive.
Ch
e
c
k t
h
e
pow
er su
pply (DC 83~1
20 V
)
.
Ch
e
c
k i
f
t
h
e
co
i
l
is
d
is
co
nne
c
te
d
.
Y
e
llow
2
P :
State 2
/ R
e
d
2
P :
Sta
g
e
3
A d
e
f
e
c
tive
p
r
opo
rti
o
na
l
va
l
ve
of
t
h
e
g
as
bloc
k
c
auses tr
o
u
bl
e in
air su
pply d
urin
g comb
usti
o
n.
Low g
as
p
ressure
c
auses
blowo
ut
of fl
a
m
e.
Th
i
c
k
fl
a
m
e
c
auses n
o
ise an
d
a
cc
i
d
enta
l fi
re.
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
,
re
pl
a
c
e
t
h
e
PCB
.
<
Mu
l
ti
-
sta
g
e va
l
ve
> <Ch
e
c
k t
h
e v
ol
ta
g
e
(DC
200V
)> <Ch
e
c
k i
f
t
h
e
co
i
l
is
d
is
co
nne
c
te
d-
a
f
ter
pl
u
gg
in
g o
ut t
h
e
co
i
l >
<Ch
e
c
k t
h
e
d
i
ff
erentia
l p
ressure
>