Daikin R71FUV1 Service Manual page 436

Troubleshooting by Remote Controller
A
Is
the type
of refrigerant
for the indoor units
with "UA" displayed
corresponding to that
for the outdoor
units?
YES
B
Does
the refrigerant
type of indoor and
outdoor unit
match?
YES
Is it a
multi outdoor unit
connection
system?
YES
Is the
combination of
master unit and slave
unit correct?
YES
NO
Si20-701_B
NO
Matches the
refrigerant type
of indoor and
outdoor unit.
NO
Replace the
outdoor unit main
PCB.
NO
Change to a
correct
combination.
Replace the
outdoor unit main
PCB.
Correct the
combination of
indoor units with
"UA" displayed.
Replace the
indoor unit PCB.
429