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Troubleshooting by Indication on the Remote Controller
SiUS30-1301
236
Service Diagnosis
Troubleshooting
Contin
u
ed to
A
(on the
follo
w
ing page)
Check the
indoor
u
nit for
w
hich
“
UE
” is displayed. Is the
transmission error “
UE
” ca
u
sed
on all indoor
u
nits?
Is the
po
w
er s
u
pply of the
indoor
u
nit on
w
hich the
“
UE
” occ
u
rred, t
u
rned
O
N
?
Has the
setting of
centralized control
gro
u
p
N
o.
b
een made
w
ith the
indoor
u
nit on
w
hich the
“
UE
” occ
u
rred?
Can the
setting of
centralized control
gro
u
p
N
o.
b
e made?
For
V
R
V
systems, can the
setting of centralized
control gro
u
p
N
o.
b
e made in
one and the same
refrigerant system?
YES
Make s
u
re there are no
hazardo
u
s sit
u
ations, and then
t
u
rn the po
w
er O
N
.
N
O
Check
w
hether or not there are
no pro
b
lems
w
ith the
transmission
w
iring length,
b
ranch n
u
m
b
ers, types of
ca
b
les and
w
ires, n
u
m
b
er of
u
nits connected, and others. If
no pro
b
lems, replace the indoor
u
nit PCB.
N
O
N
O
YES
Make correct setting of the
centralized control gro
u
p
N
o.
N
O
YES
YES
N
O
YES
Check condensing
u
nits to
w
hich the refrigerant system is
connected.
N
O
Reset the po
w
er s
u
pplies of
e
v
ery centralized control
e
qu
ipment.
For the intelligent To
u
ch
controller/manager, register the
air conditioner again
w
hile in
DIII-
N
ET test operation men
u
.
YES
W
as the
centralized control
gro
u
p
N
o. for indoor
u
nit
changed?
Caution
Be s
u
re to t
u
rn off the po
w
er s
w
itch
b
efore connecting or disconnecting
connectors, or parts may
b
e damaged.