Hitachi RAS-(3-6)HVNC1(E) Service Manual page 393

10 Servicing
10.4.9 Opening electrical box (P plate)
1 Remove the service cover following "10.4.1 Removing service cover"
in this chapter.
2 Unplug all the connectors of the electrical box.
3 Remove 5 screws which fix the electrical box and open the P plate
turning counter clockwise approximately 90°.
• Check that the LED201 (red) on the inverter PCB (PCB2) is OFF.
10.4.10 Removing Reversing valve coil
1 Remove the service cover, the bottom service cover, the rear cover and
the upper cover following "10.4.1 Removing service cover",
moving the bottom service cover and rear cover"
upper cover". Disconnect the PCN100 connector on the control PCB of
the electrical box.
2 Remove 1 fixing screw to remove the reversing valve coil.
3 When reassembling, perform the procedure in the reverse way of re-
moving.
N O T E
Fix the wires by plastic bands to the original position.
10.4.11 Removing electronic expansion valve coil
1 Remove the service cover, the bottom service cover
and the rear cover following
cover" and "10.4.4 Removing the bottom service cover
and rear cover".
2 Disconnect the CN5A connector on the control PCB of
the electrical box.
3 Hold the coil of the expansion valve and pull out upward.
It is easier to remove the expansion valve coil if it is ro-
tated while pulling it upward.
4 When reassembling after replacing the expansion valve
coil, perform the procedure in the reverse way of remo-
ving. 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.
379
SMGB0087 rev.0 - 12/2013
and "10.4.3 Removing
"10.4.1 Removing service
Power plate
Power Plate
Fixing Screw Fixing
screw
2 Fixing
2 Fixing Screws
screws
Reversing valve
"10.4.4 Re-
Fixing screw for
Reversing valve
Expansion valve coil
Expansion Valve Coil
Upper Cover
Upper cover
2 Fixing
2 Fixing Screws
screws
Hold the coil of the
Pull the expansion
expansion valve and
valve coil upward
pull out upward
with holding.
10
Release lock
Release Lock