Service manual

131
OPERATING PROCEDURE
PHOTOS
Photo 15
12. Removing bypass valve coil (SV) and bypass valve
(Only for PUHZ-HRP·V/YHA, PUHZ-HRP·V/YHA2)
(1) Remove the service panel. (See Figure 1)
(2) Remove the top panel. (See Figure 1)
(3) Remove 3 right side panel fixing screws (5 × 12) in the
rear of the unit and remove the right side panel.
(4) Remove the bypass valve solenoid coil fixing screw (M5
×6).
(5) Remove the bypass valve coil by sliding the coil upward.
(6) Disconnect the connector SV2 (blue) on the controller
circuit board in the electrical parts box.
(7) Recover refrigerant.
(8) Remove the welded part of bypass valve.
Note 1: Recover refrigerant without spreading it in the
air.
Note 2: The welded part can be removed easily by
removing the side panel (R).
Bypass valve
Thermistor
<Ref. check>
(TH33)
Bypass valve coil (SV)
Bypass valve
coil fixing screw
Replace filter
13. Removing the high pressure sensor (63HS)
(Only for PUHZ-HRP100/125YHA2)
(1) Remove the service panel. (See Figure 1)
(2) Remove the top panel. (See Figure 1)
(3) Pull out the lead wire of high pressure sensor.
(4) Recover refrigerant.
(5) Remove the welded part of high pressure sensor.
Note 1: Recover refrigerant without spreading it in the
air.
Note 2: The welded part can be removed easily by
removing the side panel (R).
Note 3: When installing the pressure sensor, make
sure to cover it with a wet cloth to prevent it
from heating (100°C or more), then braze the
pipes so that the inside of pipes are not oxi-
dized.
Figure 3
LEV coil (LEV-C)
LEV
LEV coil (LEV-A)
Thermistor
<Ref. check> (TH33)
Bypass valve coil (SV)
(except HRP·HA2R1)
Bypass valve
(except HRP·HA2R1)
LEV
LEV coil (LEV-B)
Low pressure
switch (63L)
High pressure
switch (63H)
4-way
valve coil (21S4)
4-way valve
High pressure
sensor (63HS)
OCH425F