Hitachi RAS-4-HNC - Removing Electronic Expansion Valve Coil; Removing Solenoid Valve Coil (SVA)

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 xing 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