Daikin R71FUV1 Service Manual page 337

Si20-701_B
Troubleshooting
Caution
Check LED on
the outdoor unit PCB
(Open phase?)
Open phase
of power supply
voltage?
Is the
voltage
imbalance
between phases
large? (∗1)
Note:
∗1. Target : ±10V between phases, R-S, S-T, T-R
330
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
YES
YES
NO
NO
YES
Troubleshooting by Remote Controller
External factor.
Field factors.
Field factors.
Replace the
outdoor inverter
PCB.