Troubleshooting for SA Indoor Unit SiBE18-821_C
374 Troubleshooting
5.11 Transmission Error between Main and Sub Remote
Controllers
Remote
Controller
Display
U8
Method of
Malfunction
Detection
In case of controlling with 2 remote controllers, check the system using microcomputer if signal
transmission between indoor unit and remote controller (main and sub) is normal.
Malfunction
Decision
Conditions
Normal transmission does not continue for specified period.
Supposed
Causes
Remote controller is set to “SUB” when using 1 remote controller
Connection of 2 sub remote controllers (when using 2 remote controllers)
Defective remote controller PCB
Troubleshooting
Turn the power off and then
back on. If a malfunction occurs,
replace the remote controller
PCB.
Set one remote controller to
"MAIN"; the power supply off
once and then back on.
Set SS1 to "MAIN"; the power
supply off once and then back
on.
YES
NO
YES
NO NO
YES
(R13010)
Using 2 remote
controllers?
Is SS1 of
remote controller PCB
set to "SUB"?
Is SS1 of both
remote controllers
set to "SUB"?
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.