Hitachi EV-1.5N1, Service Manual

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10. Servicing
403
SMGB0079 rev.0 - 01/2013
10
10.4.1.11 Removing electronic expansion valve coil
1 Remove the service cover, the bottom service cover, the rear cover and the upper cover following Removing service
cover , Removing bottom service cover and rear cover and Removing upper 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 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.
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
D A N G E R
DO NOT touch electrical components while the LED1 (Red) is ON to avoid electrical shock. Wait until the LED
turns off.
10.4.1.12 Removing solenoid valve coil (SVA)
1 Remove the service cover and the upper cover following
Re-
moving service cover and Removing upper cover .
2 Unplug the connector PCN7 (SVA) on O.U. PCB1.
3 Remove the fixing screw, and remove the solenoid valve coil
(SVA) upward.
4 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.
D A N G E R
DO NOT touch electrical components while the LED1 (Red)
is ON to avoid electrical shock. Wait until the LED turns off.
Hold the
coil of the
expansion
valve and
pull out
upward
Solenoid
valve
Solenoid
valve coil
Solenoid valve
coil screw