Navien NP-180, Service Manual

Page: 78 / 179

©N
avien
Am
eri
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a
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c
. 20
1
0
NR/NP
series servi
c
e Manua
l
76
Versi
o
n 2.0
Check method
Check method Cause Error type
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pply o
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: N
G
: 5”(6” 18
0
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0
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ite t
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PCB
.