Si20-701_B Troubleshooting by Remote Controller
362
Troubleshooting
Note:
∗1. K1M replacement possible in RZY100/125L.
∗2. For RZY71: Between terminals P1 and N1
For RZY100~125L: Between terminals P2 and N1
Check
LED indication
on outdoor unit PCB.
(Is voltage too
low?)
NO
YES
External factor
Is
supply
voltage 220-240V
(RZ(Y)71LV1), 220V
(RZY71 LVAL,
RZY100/125
LTAL)?
NO
YES
Local power
supply condition
YES
Monitor voltage
(instantaneous
voltage drop).
NO
YES
Replace the K1M
(∗1).
Replace the
outdoor unit
PCB.
Replace the
outdoor unit
PCB.
Does K1M turn ON?
YES
Is K1M
coil applied
with 220-240V
(RZ(Y)71LV1), 220V
(RZY71 LVAL,
RZY100/125
LTAL)?
With compressor in
operation, measure
voltage between P and N
(∗2) of power module or
between + and – of
electrolytic capacitor.
Is measured
voltage 220 VDC
or higher?
NO
NO
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
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