Main Pcb - Daikin R32 Sky-Air RZAG-M Service Manual

ESIE17-08 | Part 2. Troubleshooting

2.4.2.7. Main PCB

Technical specification
Location
Piping diagram
See "Outdoor unit" on
page 124.
Check procedure
Mechanical check
Not applicable.
Electrical check
PRELIMINARY ACTIONS
1. Switch off the Daikin unit via the user interface.
2. Switch off the Daikin unit with the field supplied circuit breaker.
3. Remove plate work when required (refer to
PROCEDURE
1. Switch on the Daikin unit with the field supplied circuit breaker.
2. Switch on the Daikin unit via the user interface.
3. Check if the HAP LED is blinking in regular intervals (1/0.5 sec), if not blinking, replace the main PCB board (refer to
main PCB" on page 92).
4. Measure the supply voltage to the main PCB board: there should be ± 220 V between brown and blue cable. If not correct
voltage, replace the electrical noise filter PCB (refer to
5. Switch off the Daikin unit via the user interface.
6. Switch off the Daikin unit with the field supplied circuit breaker.
7. Remove plate work when required.
8. Open the compressor insulation.
9. Remove the terminal cover of compressor wiring.
W : R
ARNING
The smoothing capacitor must discharge below 10 VDC before removing the compressor wiring.
10. 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.
11. Disconnect the compressor wires and connect the compressor wires to the Inverter Analyzer (SPP number 1368521).
15/11/18 | Version 1.1
R32 Sky-Air RZAG-M
Wiring diagram
See "Outdoor unit" on
page 120.
"Basic removal" on page
ISK OF ELECTROCUTION
Description
Switch box
See "Outdoor unit" on
page 129.
67).
"Replacing electrical noise filter" on page
2.4. Component checklist
Component overview of unit
See "Outdoor unit" on page 126.
"Replacing
81).
Page 55