Navien NP-180, Руководство по обслуживанию

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5.20. 36Error
Error occurrence conditions and check items.
Description Error
36E
Communication
Error
Check items
1
.
Ch
e
c
k t
h
e
comm
uni
c
ati
o
n
c
a
bl
e.
2.
Ch
e
c
k t
h
e e
x
terna
l pow
er su
pply (187~
2
54
V
)
.
3
.
Ch
e
c
k t
h
e
comm
uni
c
ati
o
n s
w
it
ch o
n t
h
e
PCB
.
4
.
Ch
e
c
k i
f
t
h
e
PCB wo
rks n
o
r
m
a
lly
.
If
a
m
aster
/
s
l
ave
comm
uni
c
ati
o
n err
o
r
occ
urs un
d
er t
h
e
c
as
c
a
d
e s
y
ste
m,
t
h
e s
y
ste
m
d
is
pl
a
y
s t
h
e
36E (cl
eare
d
aut
om
ati
c
a
lly)
err
o
r
m
essa
g
e.
1
.
All o
t
h
er
w
ater
h
eaters e
xc
e
p
t t
h
e
w
ater
h
eaters
wh
ere t
h
e
comm
uni
c
ati
o
n err
o
r
h
as
occ
urre
d op
erate n
o
r
m
a
lly
.
(Th
e
w
ater
h
eaters
w
it
h
t
h
e
comm
uni
c
ati
o
n err
o
r
m
aintain t
h
e
C
as
c
a
d
e
ON mod
e
,
an
d op
erate n
o
r
m
a
lly wh
en t
h
e
flowm
eter
wo
rks.
)
2.
If
a
comm
uni
c
ati
o
n err
o
r
occ
urs in t
h
e
m
aster
w
ater
h
eater
,
a
ll
t
h
e s
l
ave
w
ater
h
eaters
op
erate in
d
ivi
d
ua
lly
.
©N
avien
Am
eri
c
a
I
n
c
. 20
1
0
NR/NP
series servi
c
e Manua
l
1
0
9
Versi
o
n 2.0
Check method Error
Comm
uni
c
ati
o
n
err
o
r
O
t
h
er tr
o
u
bl
e
D
e
f
e
c
tive
pow
er
su
pply
D
e
f
e
c
tive
comm
uni
c
ati
o
n
c
a
bl
e
Settin
g
err
o
r
< Comm
uni
c
ati
o
n s
w
it
ch (DIP
S
/
W
No
.
6)>
Ch
e
c
k t
h
e
pow
er su
pply
t
o
t
h
e
w
ater
h
eater.
O
t
h
er tr
o
u
bl
e
D
e
f
e
c
tive
PCB
If
t
h
e tr
o
u
bl
e
co
ntinues
d
es
p
ite t
h
e
ch
e
c
kin
g of
a
bo
ve ite
m
s
,
t
h
e
PCB
is
d
e
f
e
c
tive.
Ch
e
c
k t
h
e
co
nne
c
ti
o
n
of
t
h
e
comm
uni
c
ati
o
n
c
a
bl
e
,
an
d
i
f
t
h
e
c
a
bl
e is
d
is
co
nne
c
te
d
.
I
n t
h
e
C
as
c
a
d
e s
y
ste
m,
t
h
e
co
ntr
oll
er
comm
uni
c
ati
o
n s
w
it
ch
(DIP
S
/
W
No
.
6) m
ust
b
e set t
o ON fo
r t
h
e
fi
rst an
d
t
h
e
l
ast s
y
ste
m
s
,
an
d OFF fo
r t
h
e re
m
ainin
g
s
y
ste
m
s.
Cause
Check method
1((
10