Hitachi RAS-(3-6)HVNC1(E) - Page 461

10 Servicing
447
SMGB0087 rev.0 - 12/2013
10
10.9.10 Removing reversing and solenoid valves coils
1 Remove the service cover following “10.9.1Remo-
vingservicecover”in this chapter.
2 Remove the connectors on the control PCB (PCB1)
of the electrical box according to the following pic-
ture.
3 Remove the valve coils by removing 1 xing screw
for each coil.
4 When reassembling, perform the procedure in the
reverse way of removing.
N O T E
Fixthewiresbyplasticbandstotheoriginalposition.
Hold the coil of the
SVA and pull out
upward
Reversing valve coil
Hold the coil of the
reversing valve and pull
out to the right
Hold the coil of
the SVF and pull
out upward
Fixing screws
Rear cover
Upper cover
Electrical box
10.9.11 Removing electronic expansion valve coil
1 Remove the service cover, the bottom service cover and the
rear cover following “10.9.1 Removing service cover” and
“10.9.4Removingthebottomservicecoverandrearcover”.
2 Open the P plate turning counter clockwise approximately 90°
following “10.9.9Openingelectricalbox(P-MountingPlate)”.
• Check that the LED201 (red) on Inverter is OFF when the
P plate is opened.
3 Disconnect the CN5A connector on the control PCB1 of the
electrical box.
4 Hold the coil of the expansion valve and pull out upward. It is
easier to remove the expansion valve coil if it is rotated while
pulling it upward.
5 When reassembling after replacing the expansion valve coil,
perform the procedure in the reverse way of removing. The
expansion valve coil is equipped with a lock mechanism. After
attaching the expansion valve coil, rotate it until the sound of
locking is heard.
N O T E
Fixthewiresbyplasticbandstotheoriginalposition.
Hold the coil of
the expansion
valve and pull
out upward
Expansion valve coil
Release lock