Inverter Pcb; Checking Procedures - Daikin Comfora XP Series Service Manual

3.7 Inverter PCB

3.7.1 Checking procedures

To perform an electrical check of the inverter PCB
ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
Split Comfora R32
ESIE18-01D – 2022.02
Is the problem solved?
No
As the inverter PCB is integrated in the main PCB of the unit, see
4
PCB" [ 85] for the other check procedures.
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
1 Open the compressor insulation.
DANGER: RISK OF ELECTROCUTION
Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure
the rectifier voltage is below 10 V DC before proceeding.
2 Remove the cover of the compressor wire terminals.
3 Disconnect the wiring from the compressor wire terminals U, V and W.
INFORMATION
Note the position of the Faston connectors on the compressor wire terminals to
allow correct connection during installation.
Connect the Faston connectors to the Inverter Analyzer (SPP number 2238609).
4 Turn ON the power of the unit.
5 Use the remote control to activate the inverter test:
3
|
Action
Return to "3.6.1 Checking
4
procedures" [ 78] of the indoor unit
main PCB and continue with the next
procedure.
"3.10 Plate work" [
Components
"3.8 Main
4
100].
Service manual
83