61
13 - TROUBLE SHOOTING
YES
Rem
ov
e al
l liquid
fr
om connector
.
Check fo
r leak
s.
Repair all leak
s.
Replac
e Co
ntrol M
odule
Replac
e R
eturn W
ater
Sen
sor
Is c
orrect h
ar
ness c
onnected to r
eturn
sen
sor (2
B
rown Wires)?
YES
NO
Correct wiring
Unplug m
olex
connector o
n r
eturn
sen
sor
. I
s ther
e m
oisture o
r liquid o
n
metal pins? Liquid m
ight be w
ater
o
r
an
tifr
eez
e s
olution.
NO
Is Heat
Ex
chan
ger
Pu
mp
proper
ly o
rien
ted?
(Pump ar
row pointing down?)
YES
NO
D
isconnect h
ar
ness fr
om
Return W
ater
Sen
sor
. M
eas
ure
resistan
ce u
sing digital o
hm
meter
. I
s r
esistan
ce b
etween
950 to 3
3,0
00 o
hms?
Install Heat
Ex
chan
ger
Pu
mp in
proper
o
rien
tation
YES
NO
Replace
Cont
ro
l
Mo
dule
Verify
order of
pins
on
J2.
Pin
order
should
be:
empty,
black (or red),
white,
green.
Measure volts
on
pins
of
black
wire a
nd
white wire.
Is
wiring/pins in
right order?
D
oes black/wire ha
ve 120
VAC? D
oes
white wire/pin have
0
VAC?
PN 240011320 Rev. G 10/01/2021]