Daikin VRVII Manual page 237

Troubleshooting
Caution
Are the
connectors
between the
outdoor unit main
PCB, fan drive PCB and
inverter PCB
connected
securely?
YES
The
transmission
wiring between
the outdoor unit PCB,
fan drive board and
inverter unit is
disconnected.
NO
The micro-
computer monitor
(green) on fan drive
board is
blinking.
YES
The micro-
computer monitor
(green) on the inverter
PCB is blinking.
NO
A
232
Troubleshooting by Indication on the Remote Controller
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
YES
NO
YES
Connect
transmission
wiring and turn
ON again.
Fix the
disconnection
and turn ON
again.
Check
connection of the
connector.
Defective
outdoor unit main
PCB or defective
inverter PCB.