Daikin Stylish Series - Repair Procedures

2 | Components
Service manual
42
(C)(F)TXA15~50A(W)(S)(T) + (C)(F)TXA15~50B(B)(S)(T) + RXA42+50A +
RXA20~35A + RXA42+50B
Split Stylish R32
ESIE18-03C – 2020.02
Is the flow correct? Action
Yes 4‑way valve is OK. Return to the
troubleshooting of the specific error
and continue with the next procedure.
No Perform the next step of this procedure.
9 Connect a manifold to one of the service ports of the refrigerant circuit and
check the pressure (suction, discharge). Compare with normal operation
conditions of the unit.
Refrigerant pressure correct? Action
Yes Replace the body of the 4‑way valve,
see "2.1.2Repair procedures"[442].
No Leaks may be found in the refrigerant
circuit. Perform a pressure test of the
refrigerant circuit, see "3.2.1Checking
procedures"[4133].
2.1.2 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 "2.13Plate work"[499].
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 Disconnect the 4‑way valve coil connector from the appropriate PCB.
4 To install the 4‑way valve coil, see "2.1.2Repair procedures"[442].
To remove the 4-way valve body
Prerequisite: Recuperate the refrigerant from the refrigerant circuit, see
"3.2.2Repair procedures"[4137].
1 Remove the 4‑way valve coil from the 4‑way valve body, see "2.1.2 Repair
procedures"[442].