Navien NP-180, Service Manual

Page: 109 / 179

©N
avien
Am
eri
c
a
I
n
c
. 20
1
0
NR/NP
series servi
c
e Manua
l
1
0
7
Versi
o
n 2.0
5.19. 35Error
Error occurrence conditions and check items.
Description Error
35E
Gas pres
sure sensor
error
Check items
1
. Measure t
h
e
g
as
p
ressure sens
o
r
o
ut
p
ut v
ol
ta
g
e.
2.
Ch
e
c
k t
h
e
co
nne
c
t
o
r.
(d
e
f
e
c
tive
co
nta
c
t
o
r s
ho
rt
-c
ir
c
uit
c
ause
d d
ue t
o mo
isture
)
3
.
Ch
e
c
k t
h
e
g
as
p
ressure
ho
se.
Ch
e
c
k t
h
e
g
as
p
ressure sens
o
r.
If
an err
o
r
(Op
en
:
0.
1±
0.
1
V
o
r
low
er
/
S
ho
rt
-c
ir
c
uit
:
4
.
5±
0.2 V
o
r
h
i
gh
er
)
is
d
ete
c
te
d, o
r i
f
t
h
e
g
as
p
ressure
(+) o
r
(-) ho
se is
p
u
ll
e
d o
ut
,
t
h
e s
y
ste
m d
is
pl
a
y
s
35E (cl
eare
d
aut
om
ati
c
a
lly) o
n t
h
e re
mo
te
co
ntr
oll
er an
d
t
h
e
PCB
.
During gas valve ON, is the
output voltage of GPS normal?
Yes
No
Replace GPS
During gas valve OFF, is the
output voltage of GPS normal?
Yes
No Replace GPS
Check the voltage between black and white wire of
CN 7: 1 - 4VDC
Check the voltage between black and white wire of
CN 7: 0.2 - 0.6VDC
Check connector