Si20-701_B Troubleshooting by Remote Controller
392
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.
Is wire
connection
between the
control PCB (A1P)
and the inverter PCB
(A2P) securely
connected without
wire breaking?
Is the
power supply
voltage between 180
and 220 VAC?
NO
YES
Field factor
NO
Connect
correctly/Repair
wire breaking.
YES
YES
Is
there
wrong
wiring, a wrong
wire type, loose
terminal or contact
failure in the
transmission wiring
between the
indoor and
outdoor
units?
NO
Wire correctly
and securely
fasten the
terminal screws.
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
RZQ71B9V3B
RZQS71·100 B7V3B
RZQ100~140C7V1B
RZQS125·140C7V1B
RZQ100~140B8W1B
A
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