Daikin FXYBP20K7V1, Service Manual

Page: 189 / 193

Troubleshooting (OP: Unified ON/OFF Controller) SiE 00-07
178 Troubleshooting R-407C PLUS Series
8.3 Display “Under Host Computer Integrate Control” Blinks (Repeats Double
Blink)
Remote Controller
Display
“under host computer integrated control” (Repeats double blink)
Supposed Causes Central control address (group No.) is not set for indoor unit.
Improper address setting
Improper wiring of transmission wiring
Troubleshooting
(VF082)
Is the switch
for setting each address set
correctly?
Is
the transmission
wiring disconnected or wired
incorrectly?
Replace the PC board of 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 switch for setting each address
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?