U8 " Indoor Unit: Malfunction Of Transmission Between Main And Sub Remote Controllers - Daikin RQYQ140-180PY1 Service Manual

SiBE341001
U8
2.35 " " Indoor Unit: Malfunction of Transmission between
Main and Sub Remote Controllers
U8
Remote
Controller
Display
Applicable All indoor unit models
Models
Method of 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.
Malfunction
Detection
Malfunction Normal transmission does not continue for specified period.
Decision
Conditions
Supposed
Causes
Troubleshooting
Troubleshooting
Malfunction of transmission between main and sub remote controller
Connection between sub remote controllers
Defect of remote controller PCB
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Using 2-remote
controllers control.
YES
SS1 of both remote
controllers is set to
"SUB."
YES
Troubleshooting by Remote Controller
SS1 of remote
NO
controller PCBs is
set to "MAIN."
YES
NO
NO
Set SS1 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 PCB.
Set one remote controller
to "MAIN"; the power
supply off once and then
back on.
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