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Hitachi RAS-8FSXN - Removing the Reversing Valve Coil (RVR1, RVR2); Removing the Reversing Valve

Hitachi RAS-8FSXN
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10.11.4 Removing the reversing valve coil (RVR1, RVR2)
1 Remove the
screw -A- from the reversing valve coil with a
Philips screwdriver. If it is difficult to remove the screw, use an
adjustable wrench or spanner.
2 Remove the reversing valve coil -B-.
10.11.5 Removing the reversing valve
1 Remove the front service cover as described in the procedure Removing the front service cover, see on page 292.
2 Remove the electrical box, wiring and electrical box stay as described in the procedures Removing the electrical box
for RAS-(8-12)FSXN, see on page 295,Removing the electrical box for RAS-(14-18)FSXN, see on page 295, Removing
the electrical box stay for RAS-(8-12)FSXN, see on page 296 and Removing the electrical box stay for RAS-
(14-18)FSXN, see on page 296.
3 Before starting with the task, collect the refrigerant from the refrigerant circuit into a cylinder and turn OFF the unit's
power supply line.
4 The position of the reversing valve -C- is shown in the figure.
5 Disconnect the wiring of the reversing valve coil.
6 Remove the reversing valve coil -B- (RVR1) and -D- (RVR2) as described in the procedure Removing the reversing
valve coil (RVR1, RVR2), see on page 315.
7 Remove the welding points -A- and cover the reversing valve with a wet cloth to avoid the heat.
RAS - (8-12) FSXN RAS - (14-18) FSXN
N O T E
Remove only
the welding -A- shown in the figure, otherwise leaks may occur when you fit the reversing
valve.
In the case of the heat pump system, connect the charge hose to the low pressure gas stop valve check
joint before removing the welding.
8 Remove the assembly of the reversing valve. Remove only the welding that is shown in the figure and cover the reversing
valve with a wet cloth to avoid the heat.
A
B
10 Servicing
315
SMGB0065 rev. 1 - 12/2010
10

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