Thermistor
<Comp.
Surface>
(TH32)
Cover panel
(Front)
104
Figure 2 (PUHZ-SP100VHA)
6. Removing the thermistor <Liquid> (TH3) and thermistor
<Comp.surface> (TH32)
(1) Remove the service panel. (See Figure 1)
(2) Remove the top panel. (See Figure 1)
(3) Disconnect the connectors, TH3 (white) and TH32 (black) on
the controller circuit board in the electrical parts box.
Loosen the fastener and the cable strap on the electrical
parts box and unbind the lead wires.
(4) Remove the electrical parts box if necessary. (See Photo 3)
(5) Loosen the clamp for the lead wire in the top and rear of
the electrical parts box. (See Photo 5)
(6) Pull out the thermistor <Liquid> (TH3) from the sensor
holder.
[Removing the thermistor <Comp. Surface> (TH32)]
(7) Remove the top damper, then pull out the thermistor
<Comp. Surface> (TH32) from the holder of the
compressor shell.
(8) Loosen the clamp on the separator and unbind the lead
wires.
Thermistor
<Liquid>
(TH3)
OPERATING PROCEDURE
PHOTOS
7. Removing the 4-way valve coil (21S4), LEV coil (LEV(A))
(1) Remove the service panel. (See Figure 1)
(2) Remove the top panel. (See Figure 1)
(3) Remove the electrical parts box. (Refer to procedure 3.)
[Removing the 4-way valve coil]
(4) Remove the 4-way valve coil fixing screw (M5 × 6).
(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.
(7) Loosen the clamp on the separator and unbind the lead
wires.
[Removing the linear expansion valve coil]
(4) Remove the LEV coil by sliding the coil upward.
(5) Disconnect the connectors, LEV A (white), on the controller
circuit board in the electrical parts box.
(6) Loosen the clamp on the electrical parts box and unbind
the lead wires.
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. (Refer to procedure 3)
(4) Remove 2 cover panel (front) fixing screws (5 × 12) and
remove the cover panel (front).
(5) Remove 2 cover panel (rear) fixing screws (5 x 12) and
remove the cover panel (rear). (See Figure 2)
(6) Remove 3 valve bed fixing screws (4 × 10) and 4 ball
valve and stop valve fixing screws (5 × 16) and then
remove the valve bed.
(7) Remove 4 side panel (R) fixing screws (5 × 12) in the rear
of the unit and then remove the side panel (R).
(8) Remove the 4-way valve coil. (See Photo 7)
(9) Recover refrigerant.
(10) 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 four-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.
Photo 7
Photo 8
4-way valve coil
fixing screw
4-way valve
LEV coil (LEV A)
LEV coil (LEV A)
4-way valve
LEV
4-way valve
coil (21S4)
Cover panel
(Rear)
OCH566A
