Service manual

Troubleshooting by Indication on the Unified ON/OFF Controller SiUS28-902_a
153 Troubleshooting
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting
the connector, or parts could be damaged.
Is the
reset switch
of all optional controllers
for centralized
control set to
"normal"?
Is
transmission wiring
disconnected or wired
incorrectly?
Correct the setting of the
unified ON/OFF controller's
switch for setting each
address and reset the power
supply of the unified ON/OFF
controller.
Refer to failure diagnosis for
centralized remote controller
or schedule timer.
NO
YES
YES
NO
NO
Fix the wiring correctly.
Set reset switch to
"normal."
NO
NO
YES
YES
YES
Is the
power supply
turned on for all
optional controllers for
centralized
control?
Reset power supply
simultaneously for all optional
controllers for centralized
control.
NO
YES
Has a once
connected optional
controller for centralized
control been disconnected
or its address
changed?
Is the
centralized remote
controller or schedule
timer displaying a
malfunction?
Is
a centralized remote
controller or schedule timer
connected?
Turn on power supply for all
optional controllers for
centralized control.
NO
YES
NO
Is the setting
of the unified
ON/OFF controller's
switch for setting
each address
duplicated?
Are
two or more unified
ON/OFF controllers
connected?
YES
A