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Components
Service manual
92
(A)(F)TXF20~71A + FTXF20~25B + (A)(F)TXF20~42C + (A)(F)TXF20~42D +
(A)(F)TXF20~42E + (A)RXF20~71A + RXF20~60B + (A)RXF20~42C +
(A)RXF20~42D + (A)RXF20~42E
Split Sensira R32
ESIE18-12G – 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?
Action
Yes
of the main PCB and continue with the
next procedure.
No
To check the wiring of the main PCB
Prerequisite:
First perform all earlier main PCB checks, see
89].
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
169].
INFORMATION
Correct the wiring as needed.
Is the problem solved?
Action
Yes
No further actions required.
No
of the PCB and continue with the next
procedure.
To perform a check of the inverter functions of the main PCB
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
89].
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.