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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.