Daikin VRVIII-S, Service Manual

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Troubleshooting by Indication on the Unified ON/OFF Control SiENBE34-703
192 Troubleshooting
5.3 Display “Under Host Computer Integrate Control” Blinks
(Repeats Double Blink)
remote control
Display
“under host computer integrated control” (Repeats double blink)
Applicable
Models Unified ON/OFF controller
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes ! Central control address (group No.) is not set for indoor unit.
! Improper address setting
!
Improper wiring of transmission wiring
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(V2844)
Caution
Is the transmission
wiring disconnected or
wired incorrectly?
Replace the PC board of the
unified ON/OFF control.
Fix the wiring correctly.
Set by remote control the central
control address for all indoor units
connected to the central control
line.
Set the switch for setting each
address correctly and
simultaneously reset the power
supply for all optional controls for
centralized control.
Is the central control
address (group No.) set
for the indoor unit?
Is the switch for
setting each address-
set correctly?
NO
NO
NO
YES
YES
YES