Daikin Perfera ARXM R Series, Service Manual, Page: 87 / 256

3 | Components
Service manual
87
RXM20~71R + ARXM25~71R + FTXM20~71R + ATXM25~50R +
FVXM25~50A
Split New Perfera R32
ESIE20-11 – 2021.01
High pressure switch connector
measurements are correct? Then
Yes High pressure switch is OK. Return to
the troubleshooting of the specific error
and continue with the next procedure.
No Replace the high pressure switch, see
"Repair procedures" [
4
87].
3.6.2 Repair procedures
To remove the high pressure switch
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see "3.14 Plate work" [
4
151].
Prerequisite: Recuperate the refrigerant from the refrigerant circuit, see "Repair
procedures" [ 4 209].
1 If needed, remove any parts to create more space for the removal of the high
pressure switch.
2 Remove the compressor insulation, see "Repair procedures" [
4
55].
3 Disconnect the Faston connectors from the high pressure switch.
b
c
b
a
a High pressure switch
b Faston connector
c High pressure switch pipe
4 Cut the high pressure switch pipe using a pipe cutter.
5 Remove the high pressure switch from the unit.
6 Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT
exceed 0.02 MPa.
7 Heat the end of the high pressure switch pipe using an oxygen acetylene torch
and remove the high pressure switch pipe end.
8 Stop the nitrogen supply when the piping has cooled down.
9 To install the high pressure switch, see "Repair procedures" [
4
87].
To install the high pressure switch
1 Install the high pressure switch in the correct location.