Indoor unit power-ON sequence
• In a group operation, if the indoor unit which was fed power after judgment of automatic address cannot
receive regular communication from the master unit and regular communication on identical pipe within 120
seconds after power was turned on, it reboots (system reset).
o
The operation starts from judgment of automatic address (Gr construction check) again.
(If the address of the master unit was determined in the previous time, the power fed to the master unit
and reboot works, the master unit may change though the indoor unit line address is not changed.)
<Ca
u
tion
s
at te
s
t r
u
n>
• Power
su
pply/Indoor/O
u
tdoor
s
erial and Gr wiring: OK
• Power
s
of all indoor
u
nit
s
are t
u
rned on within
3
min
u
te
s
.
• Reception time for remote controller operation
(After power
su
pply wa
s
t
u
rned on)
1) When addre
ss
i
s
OK : Approx. 50
s
econd
s
2) In AUTO addre
ss
: Approx. 4 to 5 min
u
te
s
Normal
∗
Gr normal
1) There i
s
no d
u
plicated indoor
u
nit addre
ss
.
2) There i
s
no invalid indoor
u
nit addre
ss
.
3
) Individ
u
al
u
nit and ma
s
ter/follower
u
nit
s
are not intermingled.
4) Only a
u
nit for individ
u
al.
5) A ma
s
ter indoor
u
nit and 1 or more
follower indoor
u
nit
s
for Gr.
<Automatic
address judgment>
<Initial communication>
<Usual regular
communication>
<By feed unit>
Power ON
Gr con
s
tr
u
ction check
Sy
s
tem
s
tart
O
u
tdoor model di
s
tinction (10
s
econd
s
) (Indoor
u
nit)
Twin Ma
s
ter/follower di
s
tinction (Indoor
u
nit)
Gr con
s
tr
u
ction, lo
u
ver information (Remote controller)
Remote controller operation i
s
available.
(Approx. 50
s
econd
s
after power-ON)
Reg
u
lar comm
u
nication between indoor
u
nit
s
(Every
3
0
s
econd
s
) (Ma
s
ter/Follower)
Reg
u
lar comm
u
nication on the identical pipe (every
3
0
s
econd
s
) (Twin Ma
s
ter/Follower)
(When the above
s
tat
us
change
s
, immediately comm
u
nicate
s
.)
(Repetition)
• The
u
nit witho
u
t power feed wait
s
entirely
→
Waiting
s
tat
us
i
s
relea
s
ed by
s
y
s
tem
s
tart
• Reboot when power i
s
fed on the way
3
min
u
te
s
elap
s
e
Not normal
NO
YES
A
u
tomatic addre
ss
s
tart
s
.
(Approx. 1 min
u
te
u
p to fini
s
h)
FILE NO. SVM-18041
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