ESIE09-08B Troubleshooting by Indication on the Remote Controller
Troubleshooting 205
3.60 “U8 ” Malfunction of Transmission between Main and Sub
Remote Controls
Remote Control
Display
U8
Applicable
Models
AII indoor unit models
Method of
Malfunction
Detection
In case of controlling with 2-remote control, check the system using microcomputer if signal
transmission between indoor unit and remote control (main and sub) is normal.
Malfunction
Decision
Conditions
Normal transmission does not continue for specified period.
Supposed
Causes
Malfunction of transmission between main and sub remote control
Connection between sub remote controls
Defect of remote control PC board
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect
connector, or parts damage may be occured.
(V2825)
SS1 of both
remote controls is set to
"SUB."
Set SS1 to "MAIN"; the
power supply off once and
then back on.
Set one remote control to
"MAIN"; the power supply off
once and then back on.
Turn the power off and then
back on. If a malfunction
occurs, replace the remote
controller
YES
YES
YES
NO
NO
NO
Using
2-remote controls control.
SS1 of remote
control PC boards is set to
"MAIN."
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