Removing The 4-Way Valve Coil; Removing The Lev - Mitsubishi Electric Mr.Slim PUHZ-RP35VHA3 Service Manual

OPERATING PROCEDURE
7. Removing the 4-way valve coil (21S4), LEV coil (LEV(A),
LEV(B)) and bypass valve coil (SV)
(1) Remove the service panel. (See figure 1)
(2) Remove the top panel. (See figure 1)
(3) Remove the electrical parts box. (See photo 4)

[Removing the 4-way valve coil]

(4) Remove 4-way valve coil fixing screw (M4
(5) Remove the 4-way valve coil by sliding the coil toward you.
(6) Disconnect the connector 21S4 (green) on the controller
board in the electrical parts box.
[Removing the LEV coil]
(4) Remove the LEV coil by sliding the coil upward.
(5) Disconnect the connectors, LEV A (white) and LEV B (red),
on the controller circuit board in the electrical parts box.
[Removing the bypass valve coil]
(4) Remove the bypass valve coil fixing screw (M4
(5) Remove the bypass valve coil by sliding the coil upward.
(6) Disconnect the connector SV2 (blue) on the controller cir-
cuit board in the electrical parts box.
8. Removing the 4-way valve
(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)
(4) Remove 3 valve bed fixing screws (4
and stop valve fixing screws (5
valve bed.
(5) Remove 3 right side panel fixing screws (5
of the unit and then remove the right side panel.
(6) Remove the 4-way valve coil. (See photo 7)
(7) Recover refrigerant.
(8) Remove the welded part of four-way valve.
Note 1: Recover refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by remov-
ing the right side panel.
Note 3: When installing the 4-way valve, cover it with a wet
cloth to prevent it from heating (120°C or more),
then braze the pipes so that the inside of pipes are
not oxidized.

9. Removing the LEV

(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)
(4) Remove 3 valve bed fixing screws (4
and stop valve fixing screws (5
valve bed.
(5) Remove 3 right side panel fixing screws (5
of the unit and then remove the right side panel.
(6) Remove the LEV.
(7) Recover refrigerant.
(8) Remove the welded part of linear expansion valve.
Note 1: Recover refrigerant without spreading it in the air.
Note 2: The welded part can be removed easily by remov-
ing the right side panel.
Note 3: When installing the LEV, cover it with a wet cloth
to prevent it from heating (120°C or more), then
braze the pipes so that the inside of pipes are not
oxidized.
6).
6).
10) and 4 ball valve
16) and then remove the
10) in the rear
10) and 4 ball valve
16) and then remove the
10) in the rear
136
PHOTOS
Photo 7 (PUHZ-RP60/71VHA2
LEV coil (LEV B)
Bypass valve
coil fixing
screw
Bypass valve
coil (SV)
Photo 8 (PUHZ-RP60/71VHA2
LEV coil (LEV B)
Bypass
valve
coil (SV)
Bypass
valve
LEV
Charge
plug
(High
pressure)
4-way valve coil (21S4)
Figure 2 (PUHZ-RP60/71VHA3)
LEV coil
Bypass valve coil
(LEV A)
fixing screw
Bypass valve
coil (SV)
Bypass valve
4-way valve
coil (21S4)
High pressure
switch(63H)
LEV coil
(LEV B)
Thermistor
<Discharge>
(TH4)
)
(1)
LEV coil (LEV A)
4-way valve
4-way valve
fixing screw
4-way valve
coil (21S4)
)
(1)
LEV coil (LEV A)
LEV
4-way
valve
Charge
plug
(Low
pressure)
Stop valve
LEV
Thermistor
<Outdoor pipe>
(TH33)
Thermistor
<Outdoor pipe>
(TH3)
4-way
valve