Daikin R48NUY2S - Page 337

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