Daikin VRV IV+ Service Manual page 211

3.1.2 Repair procedures
To remove the 4-way valve coil
To remove the 4-way valve body
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
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?
Yes
No
Prerequisite: Stop the unit operation via the central controller.
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 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
Prerequisite: Recuperate the refrigerant from the refrigerant circuit, see
"4.2.2 Repair procedures" [
1 Remove the 4‑way valve coil from the 4‑way valve body, see
4
procedures" [ 211].
2 Cut the 4‑way valve pipes using a pipe cutter.
Action
Replace the body of the 4‑way valve,
see "3.1.2 Repair
Leaks may be found in the refrigerant
circuit. Perform a pressure test of the
refrigerant circuit, see
procedures" [
a b
"3.1.2 Repair
4
368].
3 Components
|
4
procedures" [
"4.2.1 Checking
4
363].
4
"3.15 Plate work" [ 315].
4
procedures" [ 211].
"3.1.2 Repair
Service manual
211].
211