Toshiba MMY-MAP0804FT7(Z), Service Manual, Page: 200 / 333

– 200 –
S
ub-code:
00
: No header unit
0
2:
T
w
o or more header unit
s
No
Ye
s
Ye
s
No
[E1
9
]
[E20
]
S
ub-code:
0
1:
C
onnection of an outdoor unit in another line
0
2:
C
onnection of an indoor unit in another line
No Ye
s
No
No Y
es
YY
Ye
s
Ye
s
No
No
Ye
s
No
Ye
s
[E23
]
C
hec
k code
C
ause
C
hec
k code name
C
hec
k code
C
ause
C
hec
k code name
C
hec
k code
C
ause
C
hec
k code name
H
eader outdoor unit quantit
y
error
1
. M
isc
onn
ec
tion of int
e
r-
u
nit wir
e
be
tw
ee
n in
d
oor
a
n
d
ou
tdoor
2
.
O
utdoor I
/F P
.C
. board error
C
omm
unication si
g
nal sendin
g
e
rror
be
tw
ee
n o
u
td
oor
u
nit
s
1
. Int
e
r-
u
nit wir
e
c
onn
ec
tion
e
rror
be
tw
ee
n o
u
td
oor
u
nit
s
2
.
C
omm
unication connector connection error
betw
een outdoor units
, I/F P
.C
. board error
3
. End ter
minal resistance setu
p
error betw
een
ou
tdoo
r
u
nit
s
U
nit connected to other line
d
ur
in
g
automatic address
When star
tin
g
automatic indoor address
, a de
vice
in
a
n
o
th
e
r lin
e
i
s
co
nn
ec
ted
.
A
re
n
o
t
comm
unication lines
comm
unication
lines
(U1, U2) betw
een indoor
and outdoor connected
to m
ultiple outdoor
units?
Is
comm
unication
line betw
een indoor and
outdoor connected to
one unit per 1
system?
Is connection
of CN03 connector on outdoor I/F P
.C
. board
nor
mal?
Is not main po
w
er of
outdoor unit tur
ned
off?
Did po
w
er f
ailure
occur?
Is there no noise
source
, etc?
Is the end
ter
minal resistance betw
een
outdoor units tur
ned on?
(SW30 Bit 1)
Is
th
e
re
no
ii
i
d
i
ti
mis
wir
ing or disconnection
mis
wir
ing
or
disconnection
o
n
comm
u
n
ica
tion
lin
e
g
betw
een outdoor
b
u
nit
s?
C
onnect comm
unication line
be
tw
ee
n in
d
oor
a
n
d
o
u
td
oo
r
to one unit per 1 s
y
stem.
C
orrect comm
unication line
.
Correct wir
ing or connector
.rr..
Tur
n on main
p
owe
r o
f
outdoor unit. Tur
n the end ter
minal
resistance to ON. Clear chec
k code
.
C
hec
k and eliminate noise
,
etc.
Chec
k outdoor I/F P
.C
. board.
Def
ect
→
Replace
C
onnect comm
unication line
be
tw
ee
n in
doo
r
a
n
d
ou
tdoo
r.
Ref
erence)
T
he outdoor unit connected with comm
unication wires
(U1, U2
) betw
een
indoor and outdoor is automatically recogniz
ed as the header unit.
Chec
k I/F board.
Separ
ate the connection betw
een the lines f
ollo
wing the address setup method.
If
the outdoor po
w
er is tur
ned on ahead, the chec
k code [E1
9
:00] is displa
y
ed until the indoor po
w
er is tur
ned on.
H
o
w
e
v
er it is not an error
. When the indoor po
w
er will be tur
ned on, the chec
k code [E1
9
:00] will be automaticall
y
d
isa
pp
eared.
s
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