Daikin REYQ8-48PY1B, Service Manual

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SiBE37-701_B Troubleshooting by Indication on the Remote Controller
Troubleshooting 356
3.54
“
U8
”
Indoor Unit: Malfunction of Transmission between
Main and Sub Remote Controllers
Remote
Controller
Display
U8
Applicable
Models All indoor unit models
Method of
Malfunction
Detection 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
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 PCB
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Set SS1 to "MAIN"; the
power supply off once and
then back on.
YES
Using 2-remote
controllers control.
NO
NO
YES
YES
NO
SS1 of both remote
controllers is set to
"SUB."
SS1 of remote
controller PCBs is
set to "MAIN."
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.