Mitsubishi Electric PUHZ-P100VHA2 Service Manual page 98

OPERATING PROCEDURE
10. Removing bypass valve coil (SV) and bypass valve
(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
rear of the unit and remove the right side panel.
(4) Remove the bypass valve coil fixing screw (M4
(5) Remove the bypass valve 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 right side panel.
11. Removing the high pressure switch (63H)
(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
rear of the unit and remove the right side panel.
(4) Pull out the lead wire of high pressure switch.
(5) Recover refrigerant.
(6) Remove the welded part of high pressure switch.
Note 1: Recover refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by
removing the right side panel.
Note 3: When installing the high pressure switch, 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 oxidized.
12. Removing the reactor (DCL)
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove the electrical parts box. (See photo 3.)
<Removing the reactor>
(4) Remove 4 reactor fixing screws (4
reactor.
w The reactor is attached to the rear of the electrical parts box.
Photo 8
10) in the
6).
High pressure switch
10) in the
Bypass valve
coil (SV)
Photo 9
10) and remove the
98
PHOTOS
LEV
Lead wire of high
pressure switch
4-way valve coil
(21S4)
Bypass
valve coil 4-way valve coil
fixing screw
fixing screw
Reactor fixing screw
Reactor fixing screws
LEV coil (LEV A)
4-way valve
Reactor
(DCL)
Electrical parts box