Daikin VRV II RXYQ5MATL Service Manual page 241

Troubleshooting by Indication on the Remote Controller
Troubleshooting
230
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Has
an indoor unit once
YES
connected been removed
or its address
changed?
NO
Is
the power supply
NO
turned on for indoor units
displaying
malfunction?
YES
Is
transmission wiring
YES
disconnected or
wired incorrectly?
NO
Is
transmission with
NO
all indoor units
malfunctioning?
YES
Is
the transmission
wiring with the master YES
controller disconnected
or wired
incorrectly?
NO
Is the
master controller's
YES
connector for setting
master controller
disconnected?
NO
Is the group
NO
No. of malfunctioning
indoor units set?
YES
Si39-504
Reset power supply
simultaneously for all optional
controllers for centralized
control.
Turn indoor unit's power
supply.
Fix the wiring correctly.
Set the group No.
correctly.
Replace indoor unit PC
board.
Fix the wiring correctly.
Connect the connector
correctly.
Replace the central remote
controller.
(V2829)
Troubleshooting