Daikin R71FUV1 Service Manual page 432

Troubleshooting by Remote Controller
Troubleshooting
Caution
Is the
remote controller
connected to more
than 1 indoor
unit?
NO
Is the
outdoor unit
using for Twin
system?
YES
Is the
setting of
Pair/Twin/Triple set
correctly?
YES
Are the
micro-computer
normal monitors
(HAP) of all indoor
unit PCB
blinking?
YES
A
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
YES
NO
NO
NO
Is the
indoor-indoor
and indoor-outdoor
jumper correctly
connected?
Is the
power supply
PCB correctly
connected?
Is
there 220-
240 VAC between
No.1 and No.3 of X2M
(indoor Unit)?
NO
YES
NO
YES
NO
YES
Si20-701_B
Connect the
remote controller
correctly.
Check setting.
Set correctly.
Connect
correctly.
Connect
correctly.
Replace the
transformer.
Wiring could be
incorrect;
recheck.
425