Hitachi RCI-4.0FSR - Removing Electronic Expansion Valve Coil

7 Servicing
RCI-(1.0-6.0)FSR - 4-way cassette
SMGB0137 rev.0 - 05/2021
190
7.1.11 Removing electronic expansion valve coil
! CAUTION
TURN OFF all power source switches.
1 Remove the air panel according to the item “7.1.3 Removing optional air panel”.
2 Remove the bell-mouth according to the item “7.1.4 Removing turbo fan and fan motor”.
3 Remove the drain pan according to the item “7.1.6 Removing drain pan”.
4 Remove the partition plate according to the item “7.1.10 Removing thermistors for liquid pipe and gas pipe”.
The rotation direction does not a󰀨ect to the operation.
(However, pay attention not to touch the pipe, plate and drain pan.)
Installation of drive part
Expansion valve
Wire for
expansion valve
Plastic band
Plastic band
Liquid pipe
Thermistor for liquid pipe
Thermistor
for gas pipe
Fixing plate
for thermistor
Fix the lead wires for
expansion valve by
plastic band to face the
edge downward
Expansion valve coil
Hook
Projection
Expansion valve
body
5 Cut the plastic band xing lead wires (for 2 pipe thermistors and expansion valve).
6 Remove the hooks of the expansion valve coil from the projection of the expansion valve body by a few turn of
expansion valve coil. Pull up and remove the expansion valve coil. At this time, pay attention not to twist the pipes.
7 Insert the new expansion valve coil for replacement to the expansion valve body. When inserting, x the expansion
valve coil to catch the projections onto the hooks.
? NOTE
• The hooks are located each 90º, and the projections are located each 180º.
• The hooks shall catch onto the projections completely though the rotation direction does not aect to the operation. If the hooks do
not completely catch onto the projections, it may cause malfunction of expansion valve coil.
8 If the replacement work is completed, x the wire for expansion valve near the expansion valve coil by plastic
band. At this time, x the lead wires for expansion valve to face the edge downward. After xing the lead wires for
expansion valve, x again lead wires (for 2 pipe thermistors and the expansion valve) together by the plastic band.
? NOTE
When reassembling, securely x lead wires (for fan motor, 2 pipe thermistors and expansion valve) together by the cord clamp
attaching at the partition plate.