Photo 6 - Mitsubishi Electric PUHZ-SHW80VAA Service Manual

OPERATING PROCEDURE
6. Removing the thermistor <2-Phase Pipe> (TH6)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Disconnect the connector TH7/6 (RD) on the controller
circuit board in the electrical parts box. (See Photo 3-1)
(4) Loosen the fasteners and wire clips for the lead wire in
the electrical parts box.
(5) Loosen the clamp for the lead wire on the rear of electri-
cal parts box.
(6) Pull out the thermistor <2-phase pipe> (TH6) from ther-
mistor clip.
Note 1: When replacing thermistor <2-phase pipe> (TH6),
replace it together with thermistor <Ambient>
(TH7) since they are combined together.
Refer to procedure No.7 to remove the thermistor
<Ambient> (TH7).
7. Removing the thermistor <Ambient> (TH7)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Disconnect the connector TH7/6 (RD) on the controller
circuit board in the electrical parts box. (See Photo 3-1)
(4) Loosen the fasteners and wire clips for the lead wire in
the electrical parts box.
(5) Loosen the clamps for the lead wire on rear of electrical
parts box.
(6) Remove the sensor holder fixing screw (1 for rear/ 5 ×
12) to remove the sensor holder.
(7) Pull out the thermistor <Ambient> (TH7) from sensor
holder.
Note 1: When replacing thermistor <Ambient> (TH7),
replace it together with thermistor <2-phase pipe>
(TH6), since they are combined together.
Refer to procedure No.6 to remove the thermistor
<2-phase pipe>(TH6).
8. Removing the thermistor <Liquid> (TH3)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the cover panel (front). (See Photo 3-1)
(4) Remove the cover panel (rear) fixing screws (2 for rear
and 2 for right/ 5 × 12) to remove the cover panel (rear).
(See Photo 3-1)
(5) Remove the valve bed fixing screws (2 for front/ 5 × 12)
on the side panel (R). (See Photo 3-1)
(6) Remove the electrical parts box fixing screws (2 for front/
5 × 12). (See Photo 3-1)
(7) Remove the sensor holder.
(8) Remove the side panel (R) fixing screws (3 for rear/ 5 ×
12) to remove the side panel (R). (See Photo 1)
(9) Disconnect the connector TH3 (WH) on the controller cir-
cuit board in the electrical parts box. (See Photo 3-1)
(10) Loosen the fasteners and wire clips for the lead wire in
the electrical parts box.
(11) Loosen the clamp for the lead wire on the rear of electri-
cal parts box.
(12) Pull out the thermistor <Liquid> (TH3) from thermistor
clip.
OCH651

Photo 6

Photo 7
Thermistor <Ambient> (TH7) and sensor holder
Photo 8
67
PHOTOS
Thermistor <2-Phase Pipe> (TH6)
Thermistor <Liquid> (TH3)