Installation manual
[ IX Troubleshooting ]
- 345 -
HWE10050 GB
B
(ø15.88[5/8"])
A
(ø19.05[3/4"])
(SV4a,SV4b,SV4d)
F
(ø12.7[1/2"])
G
F
B
E
D
C
A
H
(ø15.88[5/8"])
G
(ø9.52[3/8"])
C
(ø9.52[3/8"])
E
(ø28.58[1-1/8"])
D
(ø15.88[5/8"])
Heat exchanger
Screw (M5)
Supporting plate
for solenoid
valve block
Solenoid
valve block
Removing or installing
solenoid valve block
Brazing or debrazing pipes
Removed
Solenoid valve
block ASSY
Removing Solenoid valve
block ASSY
Screw (M5)
Supporting plate
for solenoid valve block
Solenoid valve
block
Debrazing pipe
Removing or attaching the Supporting
plate for solenoid valve block
Remove the pipe
from the brazed pant
labeled H.
3) Remove the cable from the
Frame ASSY MU (top) and
MB (bottom), and remove the
Frame ASSY MU and MB.
*This figure does not show the heat
exchanger.
2) Remove the control box.
1) Remove the upper and
lower service panels
(Panel FU and FB).
Coil cover,
Solenoid valve coil
* Refer to the next page for Check valve (CV4a, CV6a, CV8a, CV9a)
replacement procedures.










