Daikin FTXP20-71L Service Manual page 87

To check the wiring of the main PCB
To perform a check of the inverter functions of the main PCB
ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
Split Comfora R32
ESIE18-01E – 2023.01
2 Enter the model name of your unit and check if the installed spare part
number corresponds with the spare part number indicated in the webbank.
NOTICE
Also check that the correct spare part is installed for the capacity adapter.
Is the correct spare part for the PCB
installed?
Yes
No
Prerequisite: First perform all earlier main PCB checks, see
4
procedures" [ 84].
Prerequisite: Stop the unit operation via the user interface.
1 Turn OFF the respective circuit breaker.
2 Check that all wires are properly connected and that all connectors are fully
plugged‑in.
3 Check that no connectors or wires are damaged.
4 Check that the wiring corresponds with the wiring diagram, see
4
diagram" [ 159].
INFORMATION
Correct the wiring as needed.
Is the problem solved?
Yes
No
INFORMATION
The inverter PCB is integrated in the main PCB. To check the inverter functions of the
main PCB, perform as described below.
Prerequisite: First perform all earlier main PCB checks, see
4
procedures" [ 84].
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
Action
Return to "3.7.1 Checking
4
procedures" [ 84] of the main PCB and
continue with the next procedure.
Replace the main PCB, see
4
procedures" [ 96].
Action
No further actions required.
Return to "3.7.1 Checking
4
procedures" [ 84] of the PCB and
continue with the next procedure.
Components
|
"3.7.2 Repair
"3.7.1 Checking
"6.2 Wiring
"3.7.1 Checking
Service manual
87