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
87
Versi
o
n 2.0
O
t
h
er err
o
r
D
e
f
e
c
tive
PCB
If
t
h
e sa
m
e tr
o
u
bl
e
co
ntinues a
f
ter revie
w
in
g of
t
h
e a
bo
ve ite
m
s
,
1
. re
pl
a
c
e t
h
e air
p
ressure sens
o
r in
c
ase t
h
e air
p
ressure sensin
g
stan
d
ar
d
is a
b
n
o
r
m
a
l, o
r
2.
R
e
pl
a
c
e t
h
e
PCB
.
Exh
aust
g
as
flow
s
in t
h
r
o
u
gh
t
h
e
su
pply p
i
p
e
If
t
h
e e
xh
aust
g
as
glow
s in t
h
r
o
u
gh
t
h
e air su
pply p
i
p
e
,
i
mp
er
f
e
c
t
comb
usti
o
n
m
a
y c
ause
1
0
E d
ue t
o
n
o
ise an
d
insta
bl
e
AP
S an
d RP
M.
Ch
e
c
k t
h
e insta
ll
ati
o
n
of fl
ue an
d
i
f
t
h
e stan
d
ar
d fl
ue is use
d
.
Ȅ
To
t
h
e
d
ire
c
ti
o
n
of
air su
pply ho
se
A
ir su
pply p
i
p
e
< Ex
a
mpl
e
of
insta
ll
ati
o
n
of
air su
pply fl
ue
>
D
e
f
e
c
tive air
su
pply/
e
xh
aust
fl
ue
D
e
fo
r
m
e
d o
r
clogg
e
d fl
ue
1
.
Ch
e
c
k t
h
e e
x
teri
o
r
of
t
h
e
fl
ue
,
in
cl
u
d
in
g d
ent.
2.
Ch
e
c
k i
f
rain
w
ater is
coll
e
c
te
d d
ue t
o dow
n
w
ar
d
insta
ll
ati
o
n
of
air su
pply p
i
p
e.