Daikin VRV II RXYQ5MY1B Service Manual page 244

SiE39-404
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
YES
connected been remove
or its address
changed?
NO
Is
the power supply
NO
turned on for indoor units
displaying
malfunction?
YES
Is
transmission wiring
NO
disconnected or
wired incorrectly?
YES
Is
NO
transmission with
all indoor units
malfunctioning?
YES
Is
the transmission
NO
wiring with the master
controller disconnected
or wired
incorrectly?
YES
Is the
master controller's
NO
connector for setting
master controller
disconnected?
YES
Troubleshooting by Indication on the Remote Controller
Is the group
NO
No. of malfunctioning
indoor units set?
YES
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 PC
board.
(V2829)
233