Opening Electrical Box (P Plate); Removing Reversing Valve Coil - Hitachi RAS-(3-6)HVNC1(E) Service Manual

10 Servicing
10.3.9 Opening electrical box (P plate)
1 Remove the service cover following
ving 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 approxi-
mately 90°.
• Check that the LED201 (red) on the inverter PCB
(PCB2) is OFF.
10.3.10 Removing Reversing valve coil
1 Remove the service cover, the bottom service cover, the
rear cover and the upper cover following
service cover", "10.3.4 Removing bottom service cover and
rear cover" and "10.3.3 Removing upper cover".
2 Open the P plate turning counter clockwise approximately
90° following "10.3.9 Opening electrical box (P plate)".
3 Check that the LED201 (red) on Inverter is OFF when the P
plate is opened.
4 Disconnect the PCN100 connector on the control PCB of
the electrical box.
5 Remove 1 fixing screw to remove the reversing valve coil.
6 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.
10.3.11 Removing electronic expansion valve coil
1 Remove the service cover following
service cover" in this chapter.
2 Open the P plate turning counter clockwise approxi-
mately 90° following "10.3.9 Opening electrical box (P
plate)".
3 Check that the LED201 (red) on Inverter is OFF when
the P plate is opened. Disconnect the CN5A connector
on the control PCB 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 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.
368
SMGB0087 rev.0 - 12/2013
"10.3.1 Remo-
Fixing Screw Fixing screw
2 Fixing screws
2 Fixing Screws
"10.3.1 Removing
"10.3.1 Removing
Upper Cover Upper cover
Power plate
Power Plate
Fixing screw for
Fixing Screw for
Reversing Valve Reversing valve Reversing Valve
Hold the coil of the
Pull the expansion
expansion valve and
valve coil upward
pull out upward
with holding.
Expansion valve coil Release lock
Expansion Valve Coil Release Lock
2 Fixing screws
2 Fixing Screws
Reversing valve