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Hitachi RAS-(4-12)HNP(1)(E) - Page 393

Hitachi RAS-(4-12)HNP(1)(E)
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10 Servicing
379
SMGB0087 rev.0 - 12/2013
10
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 x 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.
Upper Cover
Power Plate
Fixing Screw
2 Fixing Screws
2 Fixing Screws
Upper cover
Power plate
Fixing
screw
2 Fixing
screws
2 Fixing
screws
10.4.10  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”, “10.4.4Re-
movingthebottomservicecoverandrearcover” and “10.4.3Removing
uppercover”. Disconnect the PCN100 connector on the control PCB of
the electrical box.
2  Remove 1 xing screw to remove the reversing valve coil.
3  When reassembling, perform the procedure in the reverse way of re-
moving.
Reversing valve
Fixing screw for
Reversing valve
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 “10.4.1Removingservice
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.
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

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