Daikin E-Series Service Manual page 412

SiAU18-715
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
YES
once connected been
remove or its address
changed?
NO
Is the power
NO
supply turned on for
indoor units displaying
malfunction?
YES
Is
transmission wiring
NO
disconnected or wired
incorrectly?
YES
Is
transmission with
NO
all indoor units
malfunctioning?
YES
Is the
transmission
NO
wiring with the master
controller disconnected or
wired incorrectly?
YES
Is
the master
NO
controller's connector for
setting master controller
disconnected?
YES
Troubleshooting for Outdoor Unit
Is the
group No. of NO
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.
(Q0584)
399