Hitachi RAS-(2-6)HVNP1(E), Service Manual

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10 Servicing
406
SMGB0087 rev.0 - 12/2013
10.6.10 Removing reversing and solenoid valves coils
1 Remove the service cover following “10.6.1 Removing service cover” in this chapter.
2 Remove the connectors on the control PCB (PCB1) of the electrical box according to the following picture.
3 Remove the valve coils by removing 1 fixing screw for each coil.
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
Hold the coil
of the SVC
and pull out
upward
P view
Fixing screw
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.
10.6.11 Removing electronic expansion valve coil
1 Remove the service cover, the bottom service cover and the rear
cover following
“10.6.1 Removing service cover” and “10.6.4 Re-
moving the bottom service cover and rear cover” .
2 Open the P plate turning counter clockwise approximately 90°.
• 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. 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.
4 When reassembling after replacing the expansion valve coil, per-
form the procedure in the reverse way of removing. The expan-
sion 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