P1" Outdoor Unit: High Voltage Of Capacitor In Main Inverter Circuit - Daikin ALTHERMA HT ERSQ 011 AA Service Manual

ESIE09-08A
3.50 "P1 " Outdoor Unit: High Voltage of Capacitor in Main Inverter
Circuit
P1
Remote Control
Display
Applicable Models ER*Q 011~016*
Method of
Malfunction is detected according to the voltage waveform of main circuit capacitor built in the inverter.
Malfunction
Detection
Malfunction When the aforementioned voltage waveform becomes identical with the waveform of the power supply
open phase.
Decision Conditions
 Defect of main circuit capacitor
Supposed Causes
 Improper main circuit wiring
 Defect of outdoor unit PC board (A2P)
 Imbalance of phase-to-phase voltages
 Open phase
Troubleshooting
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Make measurement of power
supply voltages between L1 and
L2, L1 and L3, and L2 and L3.
Have the
power supply voltages
of three phases fallen within the
range of rated voltage
±10%?
YES
Has the
imbalance of
phase-to-phase voltages
fallen within
±10%?
YES
Troubleshooting by Indication on the Remote Controller
NO
NO
Correct the power supply voltages.
Correct the power supply voltages.
Replace the inverter PC board
assy (A2P).
201