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SiUS28-902_B
Troubleshooting by Indication on the Remote Controller
Service Diagnosis
143
3.42 Transmission Error (between Main and Sub Remote
Controllers)
Remote
Controller
Display
U8
Applicable
Models
All indoor models
Method of Error
Detection
In case of controlling with 2-remote controller, check the system using micro-computer if signal
transmission between indoor unit and remote controller (main and sub) is normal.
Error Decision
Conditions
Normal transmission does not continue for specified period.
Supposed
Causes
Transmission error between main and sub remote controller
Connection between sub remote controllers
Defective remote controller PCB
Troubleshooting
Controlling
w
ith
2-remote controller
SS-1 s
w
itch on
remote controller PCB is t
u
rned
to MAI
N
Both SS-1
s
w
itches on remote controllers
are t
u
rned to SUB
Is there
contin
u
ity in remote
controller
w
iring?
T
u
rn the SS-1 s
w
itch of
one remote controller to
MAI
N
.
T
u
rn OFF the po
w
er
s
u
pply, and restart
operation.
N
O
N
O
N
O
YES
T
u
rn OFF the po
w
er once and
restart operation.
Replace remote controller
PCB if any error is generated.
Replace the remote
controller
w
iring.
N
O
YES
YES
T
u
rn the SS-1 s
w
itch of
one remote controller to
MAI
N
.
T
u
rn OFF the po
w
er
s
u
pply, and restart
operation.
YES
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.