Hitachi RAS-4-HNCE - Removing Electronic Expansion Valve Coil; Removing Solenoid Valve Coil (SVA and SVC)

10. Servicing
369
SMGB0079 rev.0 - 01/2013
10
10.3.3.11 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.
10.3.3.12 Removing solenoid valve coil (SVA and SVC)
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) and PCN14 (SVC) on O.U. PCB1.
4 Remove the xing screw, and remove the solenoid valve coil
(SVA and SVC) 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.
Solenoid valve
coil (SVC)
Solenoid valve coil screw
Solenoid valve
coil (SVA)
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.