Troubleshooting for Outdoor Unit SiAU18-715
382 Troubleshooting
7.23 High Voltage of Capacitor in Main Inverter Circuit
Remote
Controller
Display
P1
Applicable
Models
All outdoor unit models
Method of
Malfunction
Detection
Malfunction is detected according to the voltage waveform of main circuit capacitor built in the
inverter.
Malfunction
Decision
Conditions
When the aforementioned voltage waveform becomes identical with the waveform of the power
supply open phase.
Supposed
Causes
Defect of main circuit capacitor
Improper main circuit wiring
Defect of outdoor unit PCB (A1P)
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check for the connection of
the main circuit capacitor
"C4".
Is the "C4"
properly connected?
If not connected, connect
the "C4".
Replace the outdoor unit
PC board (A1P).
(Q0572)
NO
YES
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