Inverter Pcb2 - Daikin EDLQO5CAV3 Service Manual

ESIE15-08B | Part 2. Troubleshooting

5.9. Inverter PCB2

Technical specification
The inverter PCB2 is a 400 V 3 phase inverter.
Location
Wiring diagram
Check procedure
Electrical check
W : R
ARNING
• When reconnecting a connector to the PCB, do not apply force or damage the connector or the connector pins on
the PCB.
1. Switch off the Daikin Altherma Monobloc CA via the user interface.
2. Switch off the Daikin Altherma Monobloc CA with the field supplied circuit breaker.
3. Remove the hydrobox top plate assembly, refer to
4. Remove the hydrobox front plate, refer to
5. Remove the top plate, refer to
6. Remove the front plate assembly, refer to
7. Open the compressor insulation, refer to
8. Remove the terminal cover.
W : R
ARNING
The smoothing capacitor must discharge below 10 VDC before removing the compressor wiring.
9. Measure the voltage on S70: pin 7 - 4 and wait until it drops below 10 VDC.
I
NFORMATION
Note the position of the cables on the compressor wire terminals to allow identical wiring during reinstallation.
19/07/16
Daikin Altherma Monobloc CA
PCB2
F
ISK OF IRE
"Removing the hydrobox top plate assembly" on page 110
"Removing the hydrobox front plate" on page
"Removing the top plate" on page
"Removing the front plate assembly" on page
"Removing the compressor sound insulation" on page
ISK OF ELECTROCUTION
5. Component checklist - Refrigerant Circuit
Description
The inverter PCB2 drives the compressor motor
and powers the DC fan motor.
Unit
111.
112.
113.
114.
Page 101