SiEN18-622 Troubleshooting for Outdoor Unit
Troubleshooting 401
Troubleshooting
Caution
YES
YES
NO
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
(V2829)
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Has
an indoor unit
once connected been
removed or itsaddress
changed?
Is
the power supply
turned on for indoor units
displaying malfunction?
Is
transmission wiring
disconnected or wired
incorrectly?
Is
transmission with
all indoor units
malfunctioning?
Is
the transmission
wiring with the master
controller disconnected
or wired incorrectly?
Is the
master controller's
connector for setting
master controller
disconnected?
I
s the group
No. of malfunctioning
indoor unitsset?
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.