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

10 Servicing
368
SMGB0087 rev.0 - 12/2013
10.3.9 Opening electrical box (P plate)
1 Remove the service cover following “10.3.1 Remo-
vingservicecover”in this chapter.
2 Unplug all the connectors of the electrical box.
3 Remove 5 screws which x 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.
Upper Cover
Power Plate
Fixing Screw
2 Fixing Screws
2 Fixing Screws
Upper cover
Power plate
Fixing screw
2 Fixing screws
2 Fixing screws
10.3.10 Removing Reversing valve coil
1 Remove the service cover, the bottom service cover, the
rear cover and the upper cover following “10.3.1Removing
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 xing screw to remove the reversing valve coil.
6 When reassembling, perform the procedure in the reverse
way of removing.
Reversing Valve
Fixing Screw for
Reversing Valve
Reversing valve
Fixing screw for
Reversing valve
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 “10.3.1Removing
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.
Expansion Valve Coil Release Lock
Pull the expansion
valve coil upward
with holding.
Hold the coil of the
expansion valve and
pull out upward
Expansion valve coil Release lock