ESIE09-08A Troubleshooting by Indication on the Remote Controller
Troubleshooting 215
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 connecting or disconnecting
connector, otherwise parts may be damaged.
(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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