54
System Testing & Troubleshooting
DI
AG
NO
S
T
IC
DI
S
P
L
A
Y
E
D
R
E
A
S
O
N F
O
R DI
AG
NO
S
T
IC
UCM
’S
RE
ACT
IO
N
R
E
S
E
T
RE
Q
U
IR
E
D
E
v
ap S
o
lut
ion F
low P
rov
ing S
w
it
c
h
P
roblem
: S
o
lut
ion F
low S
w
it
c
h
is
open af
te
r t
h
e S
o
lut
ion P
u
m
p
is
O
N
.
Chec
k
: V
e
ri
fy
S
o
lut
ion P
u
m
p
oper
at
ion and t
hat
t
h
e E
v
apor
at
or
S
o
lut
ion F
low S
w
it
c
h
is
wor
k
ing
pr
oper
ly
.
T
h
e diagnos
tic
c
an oc
c
u
r at
any
t
im
e
af
te
r t
he E
v
apor
at
or
S
o
lut
ion P
u
m
p
Relay
has
been r
eques
ted O
N
, and t
h
e
S
o
lut
ion F
low S
w
it
c
h
input
is
det
e
c
ted
O
P
E
N
(
no f
low)
f
o
r 5 c
o
nt
inuous
mi
n
u
te
s.
W
hen t
he S
o
lut
ion F
low S
w
it
c
h
input
is
det
ec
ted O
P
E
N
(n
o f
low)
f
o
r 6 c
ont
inuous
s
e
c
o
nds
, t
he Unit
will de-
ener
giz
e
the f
o
llowing r
e
lay
s
:
Com
p
re
s
s
or
Relay
s
, LP
C
B
y
pas
s
Relay
s
, Liquid Line
S
o
lenoids
, and HG
B
P
Relay
.
(PAR
) An
a
u
to
ma
ti
c re
se
t
o
c
c
u
rs
a
fte
r th
e
E
v
a
p
S
o
lut
ion F
low P
rov
ing
S
w
it
c
h
has
det
ec
te
d
S
o
lu
ti
o
n
fl
o
w
fo
r 6
c
o
nt
inuous
s
e
c
o
nds
.
E
x
te
rn
al Leav
ing S
o
lut
ion S
T
P
I
nput
Fa
il
P
roblem
: CG
M
is
r
e
c
e
iv
ing an
E
x
te
rn
al Leav
ing S
o
lut
ion S
e
tpoint
(L
S
S
) I
n
put
s
ignal whic
h is
out
of
ra
nge.
Chec
k
f
ield/
unit
wir
ing
bet
w
een CG
M
and E
x
te
rnal
Leav
ing S
o
lut
ion S
e
tpoint
pot
e
nt
iom
e
te
r.
T
h
e E
x
ter
nal Leav
ing S
o
lut
ion S
e
tpoint
(L
S
S
) is
des
ignat
ed as
t
h
e Leav
ing
S
o
lut
ion S
e
tp
oint
s
our
c
e
and it
is
out
of
ra
nge.
O
u
t of
r
a
nge is
def
ined as
one of
the f
o
llowing:
a)
E
x
te
rn
al LS
S
>
65 deg F
or
<
51 deg
F
f
o
r unit
wit
h
LS
S
Range 51-
65 deg F
.
b)
E
x
te
rn
al LS
S
>
50 deg F
or
<
40 deg
F
f
o
r unit
wit
h
LS
S
Range 40-
50 deg F
.
c
) E
x
te
rnal LS
S
>
39 deg F
or
<
30 deg
F
f
o
r unit
wit
h
LS
S
Range 30-
39 deg F
.
d)
E
x
te
rn
al LS
S
>
29 deg F
or
<
20 deg
F
f
o
r unit
wit
h
LS
S
Range 20-
29 deg F
.
e)
E
x
te
rn
al LS
S
>
75 deg F
or
<
10 deg
F
f
o
r unit
wit
h
LS
S
Range S
P
E
C
IA
L.
W
h
ile t
he diagnos
ti
c
is
ac
ti
v
e
,
the Leav
ing S
o
lut
ion S
e
tp
oint
will r
e
v
e
rt
t
o
us
ing t
h
e def
ault
(H
I)
Leav
ing S
o
lut
ion S
e
tpoint
.
(PAR
) An
a
u
to
ma
ti
c re
se
t o
c
cu
rs
af
te
r t
h
e E
x
te
rnal Leav
ing S
o
lut
ion
S
e
tpoint
r
e
tu
rn
s
t
o
it
s
allowable
range.
I
n
or
der
t
o
pr
ev
ent
r
apid
c
y
c
ling of
t
he Diagnos
ti
c
, t
h
er
e is
a
10 s
e
c
o
nd delay
bef
o
re
t
he
aut
om
at
ic
r
e
s
e
t.
Summary of Contents for IntelliPak CGAF Series
Page 68: ...68...
