Daikin FCQ18PVJU Service Manual page 160

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