Daikin R71FUV1 Service Manual page 391

Si20-701_B
Remote Controller Display
U4
Applicable Models
RZQ-K/H, RZR-KU/HU
Error Decision Conditions
The error is generated when the micro-processor detects
that the transmission between the indoor unit and the
outdoor unit is not normal over a certain amount of time.
Supposed Causes
Wiring indoor-outdoor transmission wire is incorrect
Defective indoor unit PCB
Defective outdoor unit PCB
Burning out fuse
Defective fan motor
External factor (Noise, etc.)
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
384
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
Is the
power supply
voltage 415 VAC
between terminal
L3 and N?
YES
Is
there a
wrong wiring
type, loose terminal
or contact failure in the
transmission wiring
between the indoor
and outdoor
units?
YES
A
Troubleshooting by Remote Controller
NO
NO
Field factor
Wire correctly
and securely
fasten the
terminal screws.