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SiUS28-902_B
Troubleshooting by Indication on the Remote Controller
Service Diagnosis
145
Troubleshooting
Has an
indoor
u
nit once
connected
b
een remo
v
ed or
its address
changed?
Is the
po
w
er s
u
pply t
u
rned
on for indoor
u
nits
displaying error?
Is
transmission
w
iring
disconnected or
w
ired
incorrectly?
Is
transmission
w
ith all
indoor
u
nits error?
Is the
transmission
w
iring
w
ith the main
controller disconnected or
w
ired incorrectly?
Is the main
controller
'
s connector
for setting main controller
disconnected?
Is the gro
u
p
N
o. of error indoor
u
nits
set?
Caution
Be s
u
re to t
u
rn off the po
w
er s
w
itch
b
efore connecting or disconnecting
the connector or parts may
b
e damaged.
Set the gro
u
p
N
o.
correctly.
Replace the indoor
u
nit
PCB.
Fix the
w
iring correctly.
Fix the
w
iring correctly.
Connect the connector
correctly.
Replace the central PCB.
Reset po
w
er s
u
pply
sim
u
ltaneo
u
sly for all optional
controllers for centralized
control.
YES
YES
N
O
YES
YES
YES
YES
T
u
rn indoor
u
nit
'
s po
w
er
s
u
pply.
YES
N
O
N
O
N
O
N
O
N
O
N
O