156
OPERATING PROCEDURE PHOTOS
9. Removing bypass valve coil (SV1) and bypass valve
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the cover panel (front). (Refer to procedure 8(5))
(4) Remove the cover panel (rear) (Refer to procedure 8(6))
(5) Remove the side panel (R). (Refer to procedure 8 (7))
(6) Remove the bypass valve coil fixing screw (M4 × 6).
(7) Remove the bypass valve coil by sliding the coil upward.
(8) Disconnect the connector SV1 (gray) on the multi controller
circuit board in the electrical parts box.
(9) Remove the electrical parts box. (See Photo 5)
(10) Recover refrigerant.
(11) Remove the welded part of bypass valve.
Refer to the notes below.
10. Removing the high pressure switch (63H) and high pres-
sure sensor (63HS)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the cover panel (front). (Refer to procedure 8(5))
(4) Remove the cover panel (rear) (Refer to procedure 8(6))
(5) Remove the side panel (R). (Refer to procedure 8 (7))
(6) Pull out the lead wire of high pressure switch and high
pressure sensor.
(7) Remove the electrical parts box. (See Photo 5)
(8) Recover refrigerant.
(9) Remove the welded part of high pressure switch and high
pressure sensor.
Refer to the notes below.
11. Removing the low pressure sensor (63LS)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the cover panel (front). (Refer to procedure 8(5))
(4) Remove the cover panel (rear) (Refer to procedure 8(6))
(5) Remove the side panel (R). (Refer to procedure 8 (7))
(6) Disconnect the connector 63LS (blue) on the multi control-
ler circuit board in the electrical parts box.
(7) Remove the electrical parts box. (See Photo 5)
(8) Recover refrigerant.
(9) Remove the welded part of low pressure sensor.
Refer to the notes below.
12. Removing electronic expansion valve (LEV-A, LEV-B)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the cover panel (front). (Refer to procedure 8(5))
(4) Remove the cover panel (rear) (Refer to procedure 8(6))
(5) Remove the side panel (R). (Refer to procedure 8 (7))
(6)
Remove the
electronic
expansion valve coil. (See Photo 12)
(7) Remove the electrical parts box. (See Photo 5)
(8) Recover refrigerant.
(9) Remove the welded part of electronic expansion valve.
Notes:
1. Recover refrigerant without spreading it in the air.
2. The welded part can be removed easily by removing
the right side panel.
3. When installing the following parts, cover it with a
wet cloth to prevent it from heating as the tempera-
ture below, then braze the pipes so that the inside of
pipes are not oxidized;
•
Bypass valve (procedure 9), 248°F [120°C] or more
•
High pressure switch and high pressure sensor
(procedure 10), 212°F [100°C] or more
•
Low pressure sensor (procedure 11), 100°C or more
•
LEV (procedure 12), 248°F [120°C] or more
Photo 11
Low pressure
sensor (63LS)
Electronic expansion
valve coil (LEV-A)
Electronic
expansion valve
Electronic expansion
valve coil (LEV-B)
Electronic
expansion valve
Photo 12
High pressure
switch (63H)
High pressure
sensor (63HS)
Bypass valve
coil fixing screw
Bypass valve
coil (SV1)
Bypass valve
Low pressure
sensor (63LS)
4-way valve coil
(21S4)
4-way
valve
Thermistor
<Low pressure
saturated temp.>
(TH6)
4-way valve coil
fixing screw
Thermistor
<Outdoor pipe>
(TH3)
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