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[ IX Troubleshooting ]
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HWE0803A GB
Heat exchanger
A (φ12.7 [1/2"])
B
(φ15.88 [5/8"])
C
(φ19.05 [3/8"])
Coil cover,
Solenoid valve coil
(SV4a,SV4b,SV4d)
1) Remove the upper and
lower service panels
(Panel FU and FB).
2) Remove the control box.
3) Remove the cable that is fixed to
the Frame ASSY MU (upper) and
MB (lower), and remove the Frame
ASSY MU and MB.
* Refer to the next page for Check valve (CV4a, CV6a, CV8a, CV9a, CV10a) replacement procedures.
Removing or installing
solenoid valve block
Solenoid valve block
Supporting plate for
solenoid valve block
Screw
(M5)
Brazing connecting pipe (φ9.52 [3/8"])
Brazing
(heat exchanger
header side)
Brazing
(Solenoid valve
block side)
Service patrs set
supplied connecting
pipe (φ9.52 [3/8"])
Brazing or debrazing pipes
D (φ28.6 [1-1/8"]), E (φ9.52 [3/8"]), F (φ9.52 [3/8"])
G (φ15.88 [5/8"])
* This figure does not show heat exchanger.
D
C
B
E
F
G
Removed Solenoid
valve block ASSY
Removing
Solenoid valve
block ASSY
Cutting pipes
Cutting pipes positions
Cut the pipe at 40mm
ahead from the Bending
R end with a pipe cutter.
40
A
(φ12.7
[1/2"])
Bending
R end
After cutting pipe,
remove the pipe
from the brazed A.