Hitachi EV-1.5N1, Service Manual

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10. Servicing
417
SMGB0079 rev.0 - 01/2013
10
10.4.2.11 Removing electronic expansion valve coil
1 Remove the service cover, the bottom service cover and the rear cover following Removing service cover and Remo-
ving bottom service cover and rear cover .
2 Disconnect the CN5A connector on the control PCB1 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 rotated
while pulling it upward.
4 When reassembling after replacing the expansion valve coil,
perform the procedure in the reverse way of removing. 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.
Hold the coil of
the expansion
valve and pull
out upward
Expansion valve coil Release lock
D A N G E R
DO NOT touch electrical components while the LED201 (Red) or LED1 (Red) are ON to avoid electrical shock. Wait
until the LEDs turn off.
10.4.2.12 Removing solenoid valve coil (SVA)
1 Remove the service cover following Removing service cover .
2
Open the P-mounting plate. Check to ensure the LED201 (Red) of the inverter PCB (PCB2) is OFF.
3 Unplug the connector PCN7 (SVA) on O.U. PCB1.
4 Remove the fixing screw, and remove the solenoid valve coil
(SVA) upward.
5 When reassembling after replacing the solenoid valve coil, per-
form the procedure in the reverse way of removing.
N O T E
Fix the wires by plastic bands to the original position.
A
Solenoid valve coil (SVA)
Ebox
D A N G E R
DO NOT touch electrical components while the LED201 (Red) or LED1 (Red) are ON to avoid electrical shock. Wait
until the LEDs turn off.