Navien NP-180, Руководство по обслуживанию

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©N
avien
Am
eri
c
a
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n
c
. 20
1
0
NR/NP
series servi
c
e Manua
l
93
Versi
o
n 2.0
Check method
Check method Cause Error type
Th
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dd
in
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ise
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ause
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by c
ir
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sa
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e
Th
e
m
ain
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eat
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xch
an
g
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clogg
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.
D
e
f
e
c
tive
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ver
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PCB
Th
e te
mp
erature
f
use is
d
is
co
n
-
ne
c
te
d
.
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p
arate in
l
et
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, w
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mp
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nne
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h
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f
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te
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e t
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e
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art an
d ch
e
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k t
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ause
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ver
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po
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ver
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tive.
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se a tester t
o
see i
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t
h
e resistan
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e is n
o
r
m
a
l (
0
Ω) o
r a
b
n
o
r
m
a
l (∞)
.
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ver
h
eat
co
ntr
oll
er
>
<Ch
e
c
k i
f
t
h
e
m
ain
h
eat e
xch
an
g
er is
clogg
e
d
.
>
<Ch
e
c
k i
f
t
h
e
o
ver
h
eat
co
ntr
oll
er
w
ire is
d
is
co
nne
c
te
d
.
>