Daikin RXYQ96PYDN, Service Manual

Page: 446 / 567

SiUS34-801A_b Troubleshooting by Indication on the Remote Controller
Troubleshooting 431
3.51
U8
Indoor Unit: Malfunction of Transmission between Main
and Sub Remote Controllers
Remote
Controller
Display
U8
Applicable
Models
All models of indoor units
Method of
Malfunction
Detection
In case of controlling with 2-remote controller, 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
Malfunction of transmission between main and sub remote controller
Connection between sub remote controllers
Defect of remote controller PC board
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(V2825)
SS1
of both remote controllers is
set to "SUB."
Set SS1 to "MAIN"; the
power supply off once and
then back on.
Set one remote controller 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 PC board.
YES
YES
YES
NO
NO
NO
Using 2-remote
controllers control.
SS1
of remote controller PC boards
is set to "MAIN."