Mitsubishi Electric PUHZ-RP3VHA Technical & Service Manual page 74

OPERATING PROCEDURE
10. Removing bypass valve solenoid 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 solenoid coil fixing screw
(M4 6).
(5) Remove the bypass valve solenoid coil by sliding the
coil upward.
(6) Disconnect the connector SV2 (blue) on the controller
board in the electrical parts box.
(7) Collect the refrigerant.
(8) Remove the welded part of bypass valve.
Note 1: Collect 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) and
low pressure switch (63L)
(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 and low
pressure switch.
(5) Collect the refrigerant.
(6) Remove the welded part of high pressure switch and low
pressure switch.
Note 1: Collect 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 and capacitor (CE)
(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 8 reactor fixing screws (4
reactor.
<Removing the capacitor>
(4) Remove 2 capacitor band fixing screws (4
remove the capacitor.
w The reactor and capacitor is attached to the rear of the
electrical parts box.
Photo 9
10) in the
Photo 10
Low pressure switch (63L)
10) in the
Photo 11
10) and remove the
10) and
Reactor
fixing
screws
74
PHOTOS
Bypass valve
solenoid coil
fixing screw
Bypass valve
solenoid coil
(SV)
Bypass
valve
High pressure switch (63H)
Electrical parts box
Reactor
Capacitor (CE)
Capacitor band
fixing screws
4-way valve
Reactor
fixing
screws