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Components
Service manual
51
(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
Refrigerant pressure correct?
Action
Yes
Replace the body of the 4‑way valve,
see
No
Leaks may be found in the refrigerant
circuit. Perform a pressure test of the
refrigerant circuit, see
155].
3.1.2 Repair procedures
To remove the 4-way valve coil
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
Prerequisite:
Remove the required plate work, see
Prerequisite:
If needed, remove any parts to create more space for the removal of
the 4‑way valve coil.
1
Remove the screw and remove the 4‑way valve coil from the 4‑way valve
body.
c
a
b
a
Screw
b
4‑way valve coil
c
4‑way valve body
2
Cut all tie straps that fix the 4‑way valve coil harness.
3
Unplug the 4-way valve connector from the appropriate PCB.
4
To install the 4‑way valve coil, see
To remove the 4-way valve body
Prerequisite:
Recuperate the refrigerant from the refrigerant circuit, see
1
Remove the 4‑way valve coil from the 4‑way valve body, see
2
Remove and keep the putty (if installed) and the insulation (if installed) for re-
use.
3
Supply nitrogen to the refrigerant circuit. The nitrogen pressure MUST NOT
exceed 0.02 MPa.
4
Wrap a wet rag around the components near the 4‑way valve pipes. Heat the
brazing points of the 4‑way valve pipes using an oxygen acetylene torch and
remove the 4‑way valve pipes from the refrigerant pipes using pliers.