Daikin Super Multi Plus E-Series - High Voltage of Capacitor in Main Inverter Circuit

Troubleshooting for Outdoor Unit SiEN18-622
384 Troubleshooting
7.23 High Voltage of Capacitor in Main Inverter Circuit
Remote Control
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.
Is the "C4"
properly connected?
Check for the connection of
the main circuit capacitor "C4".
If not connected, connect the "C4".
YES
NO
Replace the outdoor unit PC board
(A1P).