Daikin E Series, Service Manual

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Troubleshooting for SkyAir Indoor Unit SiAU18-715
346 Troubleshooting
5.13 Transmission Error ( between Main and Sub Remote
Controller )
Remote
Controller
Display
U8
Applicable
Models FFQ, FCQ, FBQ, FHQ
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
„
Transmission error between Main remote controller and Sub remote controller
„
Connection among “Sub” remote controllers
„
Faulty remote controller PCB
Troubleshooting
Turn the SS-1switch of one
remote controller to "Main".
Turn OFF the power supply, and
restart operation
Turn OFF the power once and
restart operation.
Replace remote controller PCB if
any error is generated.
Turn the SS-1switch of one
remote controller to "Main".
Turn OFF the power supply, and
restart operation.
NO NO
NO
YES
YES
YES
(Q0543)
SS-1switch
on remote controller
PCB is turned to
"Main"
Controlling
with 2-remote controller
Both SS-1
switches on remote
controllers are turned
to "Sub"
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.