Lennox GWM-050IE, Installation Instructions Manual

Page: 58 / 84

58
13 - TROUBLE SHOOTING
Is
harness
plugg
ed
into
Supp
ly
Wa
te
r Sensor?
Is
harness
plugge
d
into
Co
ntro
l
Module
J5
?
_
P
_
_
_
Blocking Error
E 5
1
Supply Sens
Open
Inser
t Ha
rnes
s
Re
pla
ce
Supply
Water
Senso
r
Discon
nect
J5
from
Con
trol
Mod
ule.
Using
dig
ital
me
te
r
mea
su
re
check
con
tin
uity
of
white
wire
s
be
twee
n
Co
ntrol
and
Sen
so
r.
Continu
ity?
Usi
ng
di
gi
ta
l me
te
r m
ea
su
re
re
sistance
be
twee
n
Su
pply
Water
Se
nsor
terminals
J5
-11
an
d
J5
-3.
M
easure
resista
nce
of
Sensor
with
digital
me
te
r.
Es
tima
te
S
en
so
r t
em
pe
ra
tu
re
.
Does
it
fall
in
th
e
ran
ge
of
th
e
R
esis
tance
C
ha
rt?
Re
place
Wires
50
to
9
0
10
to
3
2
9K
to
2
4K
ohms
15
0
to
2
00
90
to
130
°F
°C
R
es
is
ta
nc
e
13
0
to
1
50
2K
to
1K
oh
ms
2K
to
3K
oh
ms
3K
to
9K
oh
ms
54
to
6
6
32
to
5
4
66
to
9
4
Supp
ly
Water
Sens
or
Re
sistance
Cha
rt
Disco
nne
ct
fie
ld
wiring.
Is
continu
ity
between
field
wirin
g
neutra
l a
nd
groun
d
less
than
10
o
hms?
Is
field
groun
ding
cond
ucto
r
co
nnected
to
Hig
h
Voltage
Te
rmin
al
Strip
120
VAC
(G)?
N
O
YE
S
_
P
_
_
_
Blocking Error
E 4
6
Faulty
groun
d
Conn
ect
ground
conduc
tor
YE
S
N
O
Correc
t fa
ulty
gro
und
conduc
tor
Replace
Control
Module
N
O
YE
S
YE
S
N
O
YE
S
N
O
Replace
Control
Module
Unplug J5 connector on Control
board. Using digital meter measure resistance between terminals
J5-11
and
J5-3.
Estimate Sensor temperature. Does it fall in the range of the
Resistance
Chart?
Disconnect J5 from Control Module.
Using
digital
meter
measure check continuity of white
wires
between
Control
Board and Sensor. Continuity?