Removing The 4-Way Valve (21S4) And Lev Coil - Mitsubishi Electric PUHZ-SW40VHA Service Manual

OPERATING PROCEDURE
5. Removing the thermistor <Ambient> (TH7)
(1) Remove the service panel. (See Photo 2)
(2) Remove the top panel. (See Photo 1)
(3) Remove the front panel. (See Photo 1)
(4) Disconnect the connector TH7 (red) on the controller
circuit board in the electrical parts box.
(5) Loosen the clamp for the lead wire in the rear of the
electrical parts box. (See Photo 6)
(6) Pull out the thermistor <Ambient> (TH7) from the sensor
holder.
Note: In case of replacing thermistor <Ambient> (TH7),
replace it together with thermistor <2-phase pipe>
(TH6), since they are combined together.
Refer to No.4. to remove thermistor <2-phase pipe>.
6. Removing the thermistor <Discharge> (TH4) and
thermistor <Comp. surface> (TH34)
(1) Remove the service panel. (See Photo 2)
(2) Remove the top panel. (See Photo 1)
(3) Remove the front panel. (See Photo 1)
(4) Remove the back panel. (See Photo 1)
(5) Remove the electrical parts box. (See Photo 5)
[Thermistor <Discharge> (TH4)]
(6) Pull out the thermistor <Discharge> (TH4) from the sensor
holder.
[Thermistor <Comp. surface> (TH34)]
(6) Pull out the thermistor <Comp. surface> (TH34) from the
sensor holder.
7. Removing the 4-way valve (21S4) and LEV coil (LEV (A),
LEV (B))
(1) Remove the service panel. (See Photo 2)
(2) Remove the top panel. (See Photo 1)
(3) Remove the front panel. (See Photo 1)
(4) Remove the back panel. (See Photo 1)
(5) Remove the electrical parts box. (See Photo 5)
[Removing the 4-way valve (21S4)]
(6) Remove 1 4-way valve fixing screw (M4 × 6).
(7) Remove the 4-way valve by sliding the coil to the right.
[Removing the LEV coil (LEV (A), LEV (B)) ]
(6) Remove the LEV coil by sliding the coil upward.
OCH525
Photo 7
Electrical parts box
Photo 8
Thermistor <Comp. surface> (TH34)
Photo 9
LEV coil (LEV B)
LEV
LEV
57
PHOTOS
Thermistor <Ambient>
(TH7)
Sensor holder
Thermistor <Discharge>
(TH4)
4-way valve coil
(21S4)
LEV coil (LEV A)
4-way valve
4-way valve coil
fixing screw