Daikin VRV III REYQ8PY1, Service Manual

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Troubleshooting (OP: Unified ON/OFF Controller) Si37-701
344 Troubleshooting
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(V2842)
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
central 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
central remote
controller or schedule
timer displaying a
malfunction?
Is
a central 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