Display "Under Centralized Control" Blinks (Repeats
Unified ON/OFF controller
Detect the malfunction according to DIII-NET transmission data.
When no central control addresses are set to indoor units
When no indoor units are connected within the control range
Central control address (group No.) is not set for indoor unit.
Improper control range setting switch
Improper wiring of transmission wiring
Be sure to turn off the power switch before connecting or disconnecting the connector, or parts may be damaged.
control address (group No.)
range setting switch
disconnected or wired
"under centralized control" (Repeats double blink)
Is the central
set for the indoor
Is the control
Troubleshooting (OP: Unified ON/OFF Controller)
Set by remote controller the
central control address for all
indoor units connected to the
central control line.
Set the control range setting
switch correctly and
simultaneously reset the power
supply for all optional controllers
for centralized control.
Correct the wiring.
Replace the unified ON/OFF