Daikin R71FUV1 Service Manual page 404

Troubleshooting by Remote Controller
Troubleshooting
Diagnosis of incorrect or broken/disconnected wiring
If the LEDs on the indoor unit PCB are OFF, it
indicates that the transmission wiring between indoor
and outdoor units may be incorrect or broken/
disconnected.
Caution
Are the
connections of
wiring connecting
indoor and outdoor
units proper?
YES
Turn OFF the power supply
once and then turn it ON
again.
Error is
displayed again.
YES
Check HAP
(micro-computer normal
monitor) on the outdoor
unit PCB.
A
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
NO
Si20-701_B
Wire properly.
(Correct
defective wiring
and wrong wire
type.)
The indoor unit
PCB is normal.
Check for
external factors
(noise, etc.).
397