Daikin RXYQ72 Serivce Manual page 212

SiUS39-601
Troubleshooting
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Has
an indoor unit
once connected been
removed or its address
changed?
NO
Is
the power supply
turned on for indoor
units displaying
malfunction?
YES
Is
transmission wiring
disconnected or wired
incorrectly?
NO
Is
transmission with all
indoor units
malfunctioning?
YES
Is
the transmission
wiring with the master
controller disconnected or
wired incorrectly?
NO
Is
the master controller's
connector for setting
master controller
disconnected?
NO
YES
NO
YES
Is the group
NO
No. of malfunctioning
indoor units set?
YES
YES
YES
Troubleshooting (OP: Schedule Timer)
Reset power supply
simultaneously for all optional
controllers for centralized
control.
Turn indoor unit's power
supply.
Fix the wiring correctly.
NO
Set the group No. correctly.
Replace indoor unit PC board.
Fix the wiring correctly.
Connect the connector
correctly.
Replace the schedule timer.
(V2836)
201