Trane IntelliPak CGAF Series, Programming, Troubleshooting Manual

Page: 51 / 68

51
System Testing & Troubleshooting
DI
AGNOSTI
C
DI
SPLAYED
R
EASON FOR DI
AGNOSTI
C
UCM
’S REACTI
ON
RESET REQUI
R
ED
C
o
nd T
e
m
p
S
e
ns
or
F
a
ilur
e -
C
ir
cui
t 2
(C
ir
cu
it #2 40-
60 T
o
n uni
ts
onl
y)
P
robl
em
: T
h
e S
a
tur
a
ted C
o
ndens
e
r
T
e
m
p
er
atur
e Input i
s out of r
a
nge for
C
ir
cui
t #2.
C
h
ec
k:
S
e
ns
or
r
e
si
st
anc
e betw
een
830 ohm
s (
2
00 F
) and 345.7K
ohm
s
(-
40 F
). If s
o
,
T
h
e uni
t i
s r
e
adi
ng a s
ignal
that i
s out
of r
ange for
the c
ir
cui
t #2 S
a
tur
a
ted
C
ondens
er
T
e
m
p
er
atur
e s
ens
or
.
(T
em
p <
-
40 F
or
T
e
m
p
>
200 F
).
A
“
L
oc
ko
ut C
ir
cui
t #2”
r
e
ques
t i
s
is
su
ed to the C
o
m
p
re
ss
or
S
tagi
ng
C
o
n
tr
o
l fu
nc
tio
n
. T
h
e C
o
m
p
re
ss
o
r
Re
la
ys
, L
P
C B
yp
a
ss
Re
la
y,
a
n
d
Li
qui
d Li
ne S
o
le
noi
d
R
e
la
y for
C
ir
cui
t 2 ar
e al
l de-
e
ner
gi
ze
d.
(P
A
R
) A
n
a
u
to
m
a
tic
re
se
t o
cc
u
rs
a
fte
r
the #2 C
ondens
e
r T
e
m
p
input r
e
tur
n
s
to i
ts
al
lo
w
a
bl
e r
a
nge w
ith
in
10
se
co
n
d
s.
C
u
rr
e
nt
S
e
ns
in
g M
o
dul
e
C
o
m
m
F
a
il
P
robl
em
: T
h
e C
G
M
has
lo
st
co
m
m
u
ni
ca
tions
w
ith the C
u
rr
e
nt
S
ens
in
g M
o
dul
e
(
C
S
M
).
.
C
h
ec
k:
C
h
ec
k fi
el
d/uni
t w
ir
ing betw
een
CG
M
a
n
d
CS
M
.
T
h
e C
G
M
has
lo
st
c
o
m
m
uni
cati
ons
w
ith
th
e C
S
M
.
N
o
C
h
ange i
n
uni
t oper
ati
on
oc
cu
rs
. T
h
e C
u
rr
e
nt S
e
ns
in
g
M
odul
e
is
us
ed for
m
o
ni
tor
ing
pur
p
os
es
onl
y, and does
not affec
t
uni
t oper
a
tion. T
h
is
di
agnos
tic
is
fo
r in
fo
rm
a
tio
n
o
n
ly
.
(P
A
R
) A
n
a
u
to
m
a
tic
re
se
t o
cc
u
rs
a
fte
r
co
m
m
uni
ca
tion has
been r
e
st
or
ed.
E
m
e
rgen
cy
S
top
P
robl
em
: T
h
e E
m
er
genc
y S
top i
n
put
on the C
G
M
is
open.
A
n
open c
ir
cui
t has
oc
cu
rr
e
d on the
E
m
er
genc
y S
top i
n
put c
a
us
ed ei
ther
by
a H
igh D
u
ct
T
e
m
p
T
-s
tat tr
ip
, or
the
openi
ng of fi
el
d-
pr
ov
id
ed c
o
ntac
ts
,
sw
itc
h
, e
tc
...
“O
F
F
o
r “C
lo
se
” re
q
u
e
st
s a
re
is
su
ed as
appr
opr
iate to the
fo
llo
w
ing
fu
nc
tio
n
s;
a. C
o
m
p
re
ss
or
S
tagi
n
g c
o
ntr
o
l. (
A
ll
C
o
m
p
re
ss
or
R
e
la
ys
, Li
qui
d
Li
ne
S
o
le
n
o
id
R
e
la
ys
, L
P
C
B
yp
a
ss
R
e
la
y,
and H
G
B
P
R
e
la
y ar
e
deener
g
iz
ed)
.
b. E
vapor
a
tor
S
o
lu
tion P
u
m
p
C
o
n
tro
l. (S
(P
M
R
) A
m
a
n
u
a
l re
se
t i
s re
q
u
ire
d
a
fte
r
the E
m
er
genc
y S
top i
nput r
e
cl
os
es
.
T
he D
iagnos
tic
c
a
n be r
e
se
t by
the
H
u
m
a
n Int
e
rf
ac
e or
T
rac
er
or
by
cy
cl
ing pow
e
r to the C
G
M
.
E
S
T
/LS
T
Low
T
e
m
p
er
atur
e Indi
ca
tion
P
robl
em
: E
ither
the enter
ing s
o
lu
tion
tem
p
er
atur
e or
the l
e
av
ing s
o
lu
tion
tem
p
er
atur
e has
fal
le
n bel
ow
the heat
tape tem
per
atur
e s
e
tpoi
nt.
A
n
abnor
m
al
tem
p
er
atur
e r
e
adi
n
g of
th
e c
h
ill
e
d s
o
lu
tion ex
is
ts
.
N
o
c
h
ange i
n
the uni
t oper
a
tion.
T
h
is
di
agnos
tic
is
for
in
for
m
ati
o
n
onl
y.
(I
N
F
O
) A
n
a
u
to
m
a
tic
r
e
se
t o
cc
u
rs
a
fte
r
the E
S
T
and LS
T
hav
e
both r
is
e
n to
gr
eater
than 3oF
abov
e the heat tape
tem
per
atur
e s
e
tpoi
nt.