Troubleshooting by Remote Controller
SiUS281117
Service Diagnosis
171
Troubleshooting
Has an
indoor unit once
connected been removed
or its address
changed?
Is the
power supply
turned ON for indoor units
displaying error?
Is
transmission
wiring disconnected or
wired incorrectly?
Is
transmission with
all indoor units
error?
Is the
transmission
wiring with the main
controller disconnected or
wired incorrectly?
Is the main
controller
'
s connector
for setting main controller
disconnected?
Is the
group No. of error
indoor units set?
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Set the group No.
correctly.
Replace the indoor unit
PCB.
Fix the wiring correctly.
Fix the wiring correctly.
Connect the connector
correctly.
Replace the central PCB.
Reset power supply
simultaneously for all optional
controllers for centralized
control.
YES
YES
NO
YES
YES
YES
YES
Turn indoor unit
'
s power
supply.
YES
NO
NO
NO
NO
NO
NO