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
75
Versi
o
n 2.0
5.2. 04Error
Error occurrence conditions and check items.
Description Error
04E
False-flame
detection
Check items
1
.
P
re i
g
niti
o
n
f
a
l
se
-fl
a
m
e
If
a
fl
a
m
e si
g
na
l
is
d
ete
c
te
d co
ntinu
o
us
ly fo
r
6
se
co
n
d
s
b
e
fo
re
comb
usti
o
n
(
stan
d-by, p
re
-p
ur
g
e
, p
re
-
i
g
niti
o
n
),
a
f
a
l
se
-fl
a
m
e err
o
r 0
4E (
aut
om
ati
c
a
lly cl
eare
d)
is
d
is
-pl
a
y
e
d o
n t
h
e t
h
er
mo
stat
,
an
d
t
h
e s
y
ste
m p
er
fo
r
m
s
co
ntinu
o
us
po
st
-p
ur
g
e
an
d op
erates t
h
e
p
u
mp
.
2.
Po
st
p
ur
g
e
f
a
l
se
-fl
a
m
e
If
a
fl
a
m
e si
g
na
l
is
d
ete
c
te
d co
ntinu
o
us
ly fo
r
6
se
co
n
d
s
wh
en t
h
e s
y
ste
m p
er
fo
r
m
s
po
st
-p
ur
g
e as
f
ue
l
su
pply
is st
opp
e
d,
a
f
a
l
se
-fl
a
m
e err
o
r 0
4E (
aut
om
ati
c
a
lly cl
eare
d)
is
d
is
pl
a
y
e
d o
n t
h
e t
h
er
mo
stat
,
an
d
t
h
e s
y
ste
m p
er
fo
r
m
s
co
ntinu
o
us
po
st
-p
ur
g
e
an
d op
erates t
h
e
p
u
mp
.
Is the flame detected
during no burner
openrarion?
Yes
No
Replace PCB
Clean or replace flame rod
Check the current of CN 19: 7-20μA
Check the voltage between two wires
of CN 19: 10-20VDC
1
.
Ch
e
c
k i
f g
as
l
eaks
d
ue t
o d
e
f
e
c
tive air sea
l
in
g of
t
h
e
m
ain
g
as va
l
ve.
2.
Ch
e
c
k i
f
e
l
e
c
tri
c
it
y
is
d
is
ch
ar
g
e
d f
r
om
t
h
e e
l
e
c
tr
od
e.
3
.
Ch
e
c
k i
f g
as is su
ppl
ie
d
at
h
i
gh
er
p
ressure t
h
an t
h
e stan
d
ar
d g
as
p
ressure.
4
.
D
e
f
e
c
tive
PCB
.