Daikin VRV II RXYQ8MY1K, Service Manual

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Troubleshooting (OP: Unified ON/OFF Controller) Si39-502A
232 Troubleshooting
6.3 Display “Under Centralized Control” Blinks (Repeats
Double Blink)
Remote
Controller
Display “under centralized control” (Repeats double blink)
Applicable
Models Unified ON/OFF controller
Method of
Malfunction
Detection Detect the malfunction according to DIII-NET transmission data.
Malfunction
Decision
Conditions When no central control addresses are set to indoor units.
When no indoor units are connected within the control range.
Supposed
Causes
„
Central control address (group No.) is not set for indoor unit.
„
Improper control range setting switch
„
Improper wiring of transmission wiring
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(V2844)
Is the control
range setting switch
set correctly?
Is
the transmission
wiring disconnected or
wired incorrectly?
Replace the unified ON/OFF
controller.
Fix the wiring correctly.
Set by remote controller the
central control address for all
indoor units connected to the
central control line.
YES
YES
Set the control range setting
switch correctly and
simultaneously reset the power
supply for all optional controllers
for centralized control.
NO
NO
NO
YES
Is the central
control address (group No.)
set for the
indoor unit?