Daikin R71FUV1 Service Manual page 414

Troubleshooting by Remote Controller
Troubleshooting
Caution
Control
by 2 remote
controllers
NO
All
indoor unit
PCB micro-computer
normal monitors
blinking
YES
Using
multicore
transmission
wiring between indoor
unit and remote
controller
NO
Is it good
condition from noise
interference?
NO
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
YES
SS1 of
NO
both remote
controllers is set to
"Main."
NO
Resets
normally when
power supply is turned
OFF temporarily.
YES
YES
YES
NO
YES
Si20-701_B
Set one of the
remote
controllers to
"Sub," turn OFF
the power supply
temporarily, then
restart operation.
Replace the
indoor unit PCB.
Error could be
produced by
noise. Check the
surrounding area
and restart
operation.
Change to
double-core
independent
cable.
Replace the
remote controller
PCB or indoor
unit PCB.
Error could be
produced by
noise. Check the
surrounding area
and restart
operation.
407