Mitsubishi Electric PUHZ-RP100VHA3, Руководство по обслуживанию

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4-way valve coil (21S4)
OPERATING PROCEDURE PHOTOS
8. Removing the 4-way valve coil (21S4), and LEV coil
(LEV(A), LEV(B))
(1) Remove the service panel. (See Figure 1)
(2) Remove the top panel. (See Figure 1)
[Removing the 4-way valve coil]
(3) Remove 4-way valve coil fixing screw (M4 × 6).
(4) Remove the 4-way valve coil by sliding the coil toward you.
(5) Disconnect the connector 21S4 (green) on the controller
circuit board in the electrical parts box.
[Removing the LEV coil]
(3) Remove the LEV coil by sliding the coil upward.
(4) Disconnect the connectors, LEV A (white) and LEV B (red),
on the controller circuit board in the electrical parts box.
9. Removing the 4-way valve
(1) Remove the service panel. (See Figure 1)
(2) Remove the top panel. (See Figure 1)
(3) Remove 3 valve bed fixing screws (4 × 10) and 4 ball
valve and stop valve fixing screws (5 × 16) then
remove the valve bed.
(4) Remove 4 right side panel fixing screws (5 × 10) in the
rear of the unit then remove the right side panel.
(5) Remove the 4-way valve coil.
(See Photo 13)
(6) Recover refrigerant.
(7) Remove the welded part of 4-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.
10. Removing LEV
(1) Remove the service panel. (See Figure 1)
(2) Remove the top panel. (See Figure 1)
(3) Remove 3 valve bed fixing screws (4 × 10) and 4 ball
valve and stop valve fixing screws (5 × 16) then
remove the valve bed.
(4) Remove 4 right side panel fixing screws (5 × 10) in the
rear of the unit then remove the right side panel.
(5) Remove the LEV. (See Photo 13)
(6) Recover refrigerant.
(7) Remove the welded part of LEV.
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 pip-es are not
oxidized.
Photo 13
Photo 14
4-way valve
LEV coil (LEV A)
LEV
(LEV-B)
LEV coil (LEV-A)
4-way
valve
LEV
LEV coil
(LEV B)
LEV
4-way valve coil
fixing screw
Charge plug
(High pressure)
Charge plug
(Low pressure)
Thermistor
<Outdoor
pipe>
(TH33)