57
SERVICING
PCBHR101-103
PBBGR101-102
Dia
gn
os
tic
/S
ta
tu
s L
ED
C
od
es
Co
mf
or
tN
et
™
The
rm
os
ta
t O
nl
y
Sy
m
pt
om
s o
f A
bno
rm
al O
pe
ra
tio
n
(L
eg
ac
y & C
omf
or
tN
et™
T
he
rm
os
ta
t)
Gre
en
Ye
llo
w
Red
Re
d Y
1
Fa
ul
t
Des
cri
pt
io
n
Me
ssa
ge
Code
Po
ssi
bl
e C
au
se
s
Co
rrect
ive A
cti
on
s
No
tes
& C
au
tio
ns
•
Ai
r co
nd
iti
on
er
/h
eat
pum
p
ma
y ap
pear
to be
ope
ra
ting
nor
ma
lly
.
•
In
teg
rat
ed
co
nt
ro
l m
od
ule
dia
gnos
tic
/st
atu
s L
ED
’s di
sp
lay
th
e
ind
ica
ted c
ode
.
OFF
9
Fl
as
hes
OFF
ON
if
ca
ll
pr
es
en
t;
OF
F i
f n
o
cal
l
•
Lo
w P
ilo
t
Vo
lta
ge
LO
W
SE
CON
D
VO
LT
09
•
Co
nt
ro
l d
etect
s s
eco
nd
ar
y
vo
lta
ge
le
ss
tha
n 1
8 V
AC
.
•
Tr
an
sfo
rm
er
ov
er
loa
de
d.
•
Lo
w l
ine
vo
lta
ge
.
•
Che
ck
fus
e.
•
Cor
re
ct
low
se
conda
ry
vol
tag
e c
on
di
tion
.
•
Ch
ec
k t
ra
ns
fo
rm
er;
rep
lace i
f n
eed
ed
.
•
Tu
rn
pow
er
O
FF
p
rior
to r
epa
ir.
•
Fa
ult w
ill
cl
ea
r if
seco
nd
ar
y v
ol
tag
e r
ises
abov
e 21V
AC
.
•
Rep
lace w
ith
co
rrect
rep
lace
me
nt p
ar
t(s
).
•
Co
mp
re
ss
or
is o
ff.
•
In
teg
rat
ed
co
nt
ro
l m
od
ule
dia
gnos
tic
/st
atu
s L
ED
’s di
sp
lay
th
e
ind
ica
ted c
ode
.
OFF
ON
ON
ON
if
ca
ll
pr
es
en
t;
OF
F i
f n
o
cal
l
•
Co
mp P
rot
ec
tor
Ope
n
Not
di
sp
laye
d
No
t
dis
pl
ay
ed
•
No
cur
re
nt t
hr
ou
gh r
un o
r
sta
rt w
in
din
gs
.
•
C
om
pr
es
so
r r
un w
ind
in
g
is ope
n.
•
Co
mpr
es
sor
not
pr
ope
rly
wir
ed
to
co
ntr
ol
.
•
Fa
ul
ty
co
mp
re
ss
or
w
iri
ng
.
•
Fa
ile
d c
om
pr
es
sor
run
cap
aci
to
r.
•
Fa
ul
ty
run
ca
pa
cit
or
wir
in
g.
•
Ch
eck
co
mp
res
so
r;
rep
air
/rep
lace as
need
ed
.
•
Ch
ec
k w
iri
ng;
rep
air
/rep
lace as
need
ed
.
•
Ch
eck
ru
n cap
ac
ito
r;
rep
lace as
need
ed
.
•
Tu
rn
pow
er
O
FF
p
rior
to r
epa
ir.
•
Fa
ult w
ill
cl
ea
r a
fte
r 1
no
rma
l c
yc
le.
•
Fa
ul
t m
ay
be
cl
ea
re
d by
cy
clin
g 2
4V
AC
to
co
nt
ro
l.
•
Rep
lace w
ith
co
rrect
rep
lace
me
nt p
ar
t(s
).
