19
TROUBLESHOOTING INFORMATION: UNITARY DIAGNOSTIC CODES
Dia
gnos
ti
c
/Sta
tu
s
LED Code
s
ComfortNet™
T
h
ermostat Onl
y
S
y
m
p
toms of
A
b
normal
Op
eratio
n
(L
eg
a
c
y
&
ComfortNet™ T
h
ermost
at)
G
ree
n
Y
e
llow
R
ed
R
ed Y
1
Fa
ult
De
s
c
ript
ion
Mess
ag
e
C
ode
Possible Cau
se
s
C
o
rrect
iv
e A
c
ti
on
s
Not
e
s
& Ca
utions
x
F
our
co
ns
ec
utiv
e
comp
re
ss
or
pro
te
c
to
r t
rip
s w
ith
av
erag
e r
un
time
betw
e
e
n
tr
ip
s
gr
eat
er
th
an
1
minut
e
an
d l
e
s
s
t
h
an
15 m
in
u
te
s.
x
Low
pre
s
s
u
re
a
n
d
hig
h
pr
es
sur
e
sw
itche
s a
re
cl
os
e
d
.
x
Int
egr
at
ed co
ntr
o
l modu
le
dia
g
n
o
st
ic/
s
ta
tu
s LE
D
’s
d
is
p
lay
the
in
dic
a
ted
co
de
.
OFF
2
Flas
he
s
OFF
ON if
call
p
res
en
t
; OFF if
no cal
l
x
H
igh
S
ide
F
ault
HIGH SIDE
FAUL
T
02
x
Bl
o
c
ke
d
co
nd
en
s
e
r
coil
.
x
Outdo
or
fa
n
not
run
n
ing.
x
Ch
e
c
k
an
d c
le
a
n
c
o
nd
en
se
r co
il.
x
Ch
e
c
k
ou
td
oo
r
fan
motor;
rep
air
/r
epl
ac
e as
nee
de
d.
x
Ch
e
c
k
ou
td
oo
r
fan
motor
w
iring
;
rep
air
/r
epl
ac
e as
nee
de
d.
x
Ch
e
c
k
ou
td
oo
r
fan
motor
c
a
p
a
ci
to
r;
re
pl
ac
e
a
s
ne
ed
ed
.
x
Tu
rn
p
o
w
e
r
OFF
pri
o
r t
o
re
pai
r.
x
Fault
w
ill cle
a
r aft
e
r
4
co
ns
ec
u
ti
v
e
norm
a
l cy
cles.
x
F
a
ult m
a
y
be
cle
a
re
d by
cy
cling
24V
A
C
to
co
ntr
o
l.
x
Re
p
lac
e w
it
h
co
rr
e
c
t
re
pl
ac
e
m
en
t p
a
rt
(s
).
x
C
o
mpre
s
s
o
r
a
nd out
do
or fa
n
a
re
off.
x
T
hermo
st
at dema
nd
is
pr
es
ent
.
x
Int
egr
at
ed co
ntr
o
l modu
le
dia
g
n
o
st
ic/
s
ta
tu
s LE
D
’s
d
is
p
lay
the
in
dic
a
ted
co
de
.
ON
2
Flas
he
s
OFF
ON if
call
p
res
en
t
; OFF if
no cal
l
x
H
igh
Press
ur
e Cu
t
Ou
t Trip
HPS OP
EN
0
2
x
Bl
o
c
ke
d
co
nd
en
s
e
r
coil
.
x
Outdo
or
fa
n
not
run
n
ing.
x
C
h
ec
k a
n
d
cl
ea
n
c
o
nd
en
se
r co
il.
x
Ch
e
c
k
ou
td
oo
r
fan
motor;
rep
a
ir
/r
epl
ac
e as
nee
de
d.
x
Ch
e
c
k
ou
td
oo
r
fan
motor
w
iring
;
rep
a
ir
/r
epl
ac
e as
nee
de
d.
x
Ch
e
c
k
ou
td
oo
r
fan
motor
c
a
p
a
ci
to
r;
re
pl
ac
e
a
s
ne
ed
ed
.
x
Tu
rn
p
o
w
e
r
OFF
pri
o
r t
o
re
pai
r.
x
Re
p
lac
e w
it
h
co
rr
e
c
t
re
pl
ac
e
m
en
t p
a
rt
(s
).
x
C
o
mpre
s
s
o
r
a
nd out
do
or fa
n
a
re
off.
x
Low
pre
s
s
u
re
sw
it
ch
tri
p 3
tim
es
w
ithin
s
a
me th
erm
o
st
at dem
an
d.
x
T
hermo
st
at dema
nd
is
pr
es
ent
.
x
Int
egr
at
ed co
ntr
o
l modu
le
dia
g
n
o
st
ic/
s
ta
tu
s LE
D
’s
d
is
p
lay
the
in
dic
a
ted
co
de
.
x
ComfortN
et™ th
er
most
at “Call fo
r
S
e
rv
ice” i
c
o
n
il
lum
inat
ed
.
x
ComfortN
e
t™ th
er
most
at sc
roll
s
“C
he
ck A
ir C
o
ndi
ti
one
r”
or
“C
he
ck H
eat
P
u
m
p
” me
ss
ag
e.
ON
2
Flas
he
s
ON
ON if
call
p
res
en
t
; OFF if
no cal
l
x
H
igh
Press
ur
e Cu
t
Ou
t Lo
ck
ou
t
(3 T
ri
p
s
)
HPS
LO
C
K
O
U
T
02
x
Bl
o
c
ke
d
co
nd
en
s
e
r
coil
.
x
Outdo
or
fa
n
not
run
n
ing.
x
Ch
e
c
k
an
d c
le
a
n
c
o
nd
en
se
r co
il.
x
Ch
e
c
k
ou
td
oo
r
fan
motor;
rep
a
ir
/r
epl
ac
e as
nee
de
d.
x
Ch
e
c
k
ou
td
oo
r
fan
motor
w
iring
;
rep
a
ir
/r
epl
a
c
e
as
nee
de
d.
x
Ch
e
c
k
ou
td
oo
r
fan
motor
c
a
p
a
ci
to
r;
re
pl
ac
e
a
s
ne
ed
ed
.
x
Tu
rn
p
o
w
e
r
OFF
pri
o
r t
o
re
pai
r.
x
M
u
st
cl
ear
f
ault
by
cy
cling 24V
A
C
to
con
tr
ol.
x
Re
p
lac
e w
it
h
co
rr
e
c
t
rep
la
c
eme
n
t pa
rt(
s
).
x
R
un tim
e f
o
r la
st
4
cy
cles i
s
les
s
th
an
3 mi
nu
te
s
e
a
c
h
.
x
Co
m
p
res
so
r p
ro
tec
to
r ha
s no
t
trip
pe
d.
x
Low
pre
s
s
u
re
a
n
d
hig
h
pr
es
sur
e
sw
itche
s a
re
cl
os
e
d
.
x
Int
egr
at
ed co
ntr
o
l modu
le
dia
g
n
o
st
ic/
s
ta
tu
s LE
D
’s
d
is
p
lay
the
in
dic
a
ted
co
de
.
OFF
3
Flas
he
s
OFF
ON if
call
p
res
en
t
; OFF if
no cal
l
x
S
h
ort
C
y
cling
CMPR
SHRT
CYCL
E
03
x
Int
e
rmit
te
n
t
th
e
rm
o
st
at
d
e
m
an
d.
x
F
a
ulty
comp
re
ss
o
r
rel
a
y
.
x
C
h
ec
k
th
e
rmos
tat
and
th
erm
o
st
at
w
iring;
rep
air
/r
epl
ac
e as
nee
de
d.
x
Chec
k
c
o
mp
re
ss
o
r
rel
a
y
oper
ati
on;
re
pl
ac
e
c
o
n
tro
l a
s
nee
de
d.
x
Tu
rn
p
o
w
e
r
OFF
pri
o
r t
o
re
pai
r.
x
Fault
w
ill cle
a
r aft
e
r
4
co
ns
ec
u
ti
v
e
norm
a
l cy
cles.
x
F
a
ult m
a
y
be
cle
a
re
d by
cy
cling
24V
A
C
to
co
ntr
o
l.
x
Re
p
lac
e w
it
h
co
rr
e
c
t
re
pl
ac
e
m
en
t p
a
rt
(s
).
x
Minimum
comp
re
ss
or ru
nt
time i
s
ch
an
ge
d fr
om
30
se
co
nd
s t
o
3
minutes.
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