Daikin ComfortNet DX7TC, Service Instructions Manual

Page: 43 / 122

43
SERVICING
LED
dis
play is ON c
on
tinuou
sly
O
N
Nor
m
al operation
No
ne
N
on
e
Norm
al operation
N
one
Nor
m
al operation
El
ect
ric
hea
ters
fai
l to
ener
gize
on
a
ca
ll
for
W
1
or
A
ux
iliar
y/
Em
er
gen
cy
hea
t
In
te
gr
ated
c
ontr
ol
m
od
ul
e L
ED
display
pr
ovid
es
the indicated error code.
Co
m
fo
rtNet t
herm
os
ta
t “
Ca
ll
fo
r S
ervi
ce”
ic
on
illum
in
ate
d
Com
fo
rtNe
t t
her
m
os
tat
sc
rol
ls
“Check Air
Handler” m
essa
ge
1
Fl
as
h
Hea
te
r k
it selec
te
d via
di
psw
itches
is
too
la
rg
e
fo
r h
eate
r kits
speci
fie
d
in
sha
red
data
se
t
HT
R
TOO
LA
RGE
Ec
Hea
te
r k
it selec
te
d via
dipswitches
is
too
la
rge
fo
r heate
r
kit
s i
n shared data
se
t
Ve
rif
y
el
ec
tric
h
ea
t dips
w
itc
h
settings Verif
y
the
in
stal
le
d elec
tri
c
hea
te
r i
s v
alid
fo
r t
he air
h
an
dl
er
.
Ch
eck
na
m
epl
ate
o
r
Specif
ica
tion
S
heet
a
pp
lica
ble
to
yo
ur
m
odel* for allowable
h
eate
r
ki
t(s
).
Ve
rif
y
sh
are
d
data
set is correct
fo
r t
he s
pec
ifi
c
m
odel
.
Re-
popul
ate
d
ata
using
c
orrect
m
em
or
y
car
d
if
re
qu
ired
.
Tu
rn
po
wer OFF
p
rio
r t
o
re
pa
ir.
Use
m
em
or
y
ca
rd
fo
r the
specific
m
odel
.
In
ser
t m
em
or
y
card
B
EFORE
tu
rn
in
g
power ON. Me
m
or
y ca
rd
m
ay
b
e re
m
oved
af
te
r d
at
a
is
lo
ad
ed
.
Turn power OFF before rem
oving
m
em
or
y
car
d.
Er
ro
r c
od
e
w
ill be cle
ared once
data
is
loaded
.
Electric
heat ai
rflo
w
is
h
igh
er
th
an
exp
ec
te
d
on
a
ca
ll
for
W
1
or
Aux
ili
ar
y/E
m
ergency
heat
In
te
gr
ated
c
ontr
ol
m
od
ul
e
LE
D d
ispl
ay
pr
ovid
es
the indicated error code.
1 F
las
h
Hea
te
r k
it selec
te
d via
dipswitches
is
too
sm
all
fo
r h
eate
r kits
speci
fie
d
in
sh
ar
ed d
at
a
se
t
HT
R
TOO
SMALL
Ec
Heater k
it se
lec
te
d via
di
psw
itches
is
too
sm
all
for
heater
kit
s i
n shared data
se
t
Ve
rif
y
el
ec
tri
c
hea
t d
ip
sw
itc
h
settings Verif
y
the installed electric
hea
te
r i
s v
al
id
for
the air
h
an
dl
er
.
Ch
eck
na
m
epl
at
e
or
Specif
ica
tion
S
heet
a
pp
licab
le
to
yo
ur
m
odel* for allowable
h
eate
r
ki
t(s
).
Ve
rify
shared
data
set
is
cor
rect
fo
r t
he spec
ific
m
od
el
. Re
-
popul
ate
d
ata
usin
g c
orrect
m
em
or
y
car
d
if
re
qu
ired.
Tu
rn
po
wer OFF
p
rio
r t
o
re
pa
ir.
Use
m
em
or
y
car
d
for
the s
pec
ifi
c
m
odel
.
Insert
m
em
or
y
car
d BEFOR
E
tu
rn
in
g
power ON. Me
m
or
y ca
rd
m
ay
b
e re
m
oved
af
te
r d
at
a
is
lo
ad
ed
.
Turn power OFF before rem
oving
m
em
or
y
car
d.
Error code
w
ill be cleared once
data
is
loaded
.
Electric
heat ai
rflo
w
is
h
igh
er
th
an
exp
ec
te
d
on
a
ca
ll
for
W
1
or
Aux
ili
ar
y/E
m
ergency heat
In
te
gr
ated
c
ontr
ol
m
od
ul
e
LE
D d
ispl
ay
pr
ovid
es
the indicated error code.
1 F
las
h
Hea
te
r k
it selec
te
d via
dipswitches
do
es
n
ot
hea
te
r k
its
speci
fied
in
sha
re
d
da
ta set
NO
H
TR
M
AT
C
H
Ec
Heater k
it se
lec
te
d via
di
psw
itches
is
doesn
’t
m
atch
heater
k
its in shared
da
ta set
Ve
rif
y
el
ec
tri
c
hea
t d
ip
sw
itc
h
settings Verif
y
the installed electric
hea
te
r i
s v
alid
fo
r t
he air
h
an
dl
er
.
Ch
eck
na
m
epl
ate
o
r
Specif
icat
io
n
Shee
t ap
pli
ca
bl
e t
o
yo
ur
m
odel* for allowable
h
eate
r
ki
t(s
).
Ve
rify
sha
red data
set
is
co
rrect
fo
r t
he s
pec
ifi
c
m
odel. Re-
popul
ate
d
ata
usin
g c
orrect
m
em
or
y
car
d
if
re
qu
ired
.
Tu
rn
po
wer OFF
pr
io
r t
o
re
pa
ir.
Use
m
em
or
y
ca
rd
fo
r the
specific
m
odel
.
In
ser
t m
em
or
y
card
B
EFORE
tu
rn
in
g
power ON. Me
m
or
y ca
rd
m
ay
b
e re
m
oved
af
te
r d
at
a
is
lo
ad
ed
.
Tu
rn
po
wer OFF
bef
ore
rem
oving
m
em
or
y
car
d.
Er
ro
r c
od
e
w
ill be cle
ared once
data
is
loaded
.
No
a
ir
ha
ndler
o
pera
tio
n.
In
te
gr
ated
c
ontr
ol
m
od
ul
e L
ED
display
pr
ovid
es
the indicated error code.
Co
m
fort
Net
the
rm
osta
t di
sp
la
ys
“
Ba
tte
ry
Power”
5
Fl
as
hes
Open F
use
Not
Displayed
Not
D
ispl
ay
ed
Sh
or
t i
n
lo
w
volt
ag
e
w
iring
Locate and correct short in low voltage
wiri
ng
Turn power OFF prior to repair. Replace fuse with
3
-a
m
p
aut
om
ot
iv
e
ty
pe
A
ir
ha
nd
le
r fa
ils
to
ope
rate
In
te
gr
ated
c
ontr
ol
m
od
ul
e L
ED
display
provides
no
si
gna
l.
Co
m
fo
rtNe
t t
herm
ostat
“C
all
fo
r Se
rvi
ce”
ic
on
illum
in
ate
d
Com
fo
rtNe
t th
er
m
ostat
scr
ol
ls
“Check Air
Handler” m
essa
ge
Non
e
No 208/230 volt power to
a
ir
ha
nd
le
r o
r no
2
4
vo
lt
po
wer t
o i
ntegrated
con
tro
l m
od
ul
e
Bl
ow
n
fu
se
o
r c
ircuit
br
ea
ker
Integ
rated
cont
ro
l
m
odul
e
has an
in
te
rnal
fa
ul
t.
INT
ER
N
AL
FAU
LT
EE
Manual
disconnect switc
h O
FF
o
r
24
v
ol
t wir
e
im
pr
op
er
ly
connected
or loose
B
lo
w
n
fuse
o
r circuit
breake
r
Int
egr
ated co
ntr
ol
m
od
ule has an
in
te
rn
al
faul
t
Assu
re
2
08/230
volt
and
24
vol
t
po
wer
to ai
r ha
nd
ler
an
d
in
tegrated
c
on
trol
m
odul
e.
Ch
eck
in
te
gra
te
d
co
nt
rol
m
odule
fu
se (
3A)
.
Re
pl
ace
if
necessary
.
Ch
ec
k
for
p
ossi
bl
e
sh
or
ts
in
208/230 volt and
2
4 volt circuits.
Repair as necessar
y.
Re
pl
ace
bad integrated control
m
od
ule
.
Tu
rn
po
wer OFF
pr
io
r t
o
re
pa
ir.
Re
pl
ace
int
eg
ra
te
d
cont
rol
m
od
ul
e
fuse
with
3A
a
ut
om
ot
iv
e
fuse. Re
pl
ace
int
eg
ra
te
d
cont
rol
m
odul
e w
ith
c
orrect
re
pl
ace
m
en
t
pa
rt
Read
p
recau
tio
ns
in
“
Electrostatic
Discharge” section
o
f m
an
ual
.
PCBJA101- PCBJA102 AIR HANDLER DIAGNOSTIC CODES