138
7. Removing the 4-way valve coil (21S4), and LEV coil
(LEV (A), LEV (B)), (LEV (C) :140 only)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 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),
LEV C (blue) on the controller circuit board in the electrical
parts box.
8. Removing the 4-way valve
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the electrical parts box. (See Photo 4)
(4) Remove 3 valve bed fixing screws (4 × 10) and 4 ball
valve and stop valve fixing screws (5 × 16) then remove
the valve bed.
(5) Remove 3 right side panel fixing screws (5 × 12) in the
rear of the unit then remove the right side panel.
(6) Remove the 4-way valve coil.
(7) Recover refrigerant.
(8) 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
removing 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 LEV
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the electrical parts box. (See Photo 4)
(4) Remove 3 valve bed fixing screws (4 × 10) and 4 ball
valve and stop valve fixing screws (5 × 16) then remove
the valve bed.
(5) Remove 3 right side panel fixing screws (5 × 12) in the
rear of the unit then remove the right side panel.
(6) Remove the LEV coil.
(7) Recover refrigerant.
(8) 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
removing 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.
Figure 1 (PUHZ-ZRP100-125VKA)
(PUHZ-ZRP140VKA)
OPERATING PROCEDURE
ILLUSTRATIONS
LEV coil
(LEV A)
4-way valve
coil (21S4)
4-way valve
Thermistor
<Outdoor pipe>
(TH33)
LEV coil
(LEV B)
Ball valve
Stop valve
Valve bed
LEV coil
(LEV C)
LEV coil
(LEV B)
Thermistor
<Outdoor pipe>
(TH33)
LEV coil
(LEV A)
Ball valve
Stop valve
Valve bed
4-way valve
coil (21S4)
4-way valve
OCH527B
