Mitsubishi Electric PUHZ-W50VHA Service Manual page 67

OPERATING PROCEDURE
5. Removing the thermistor <Plate HEX liquid> (TH6) and
thermistor <Outdoor> (TH7)
(1) Remove the service panel. (See Photo 1.)
(2) Remove the top panel. (See Photo 1.)
(3) Disconnect the connectors, TH7/6 (red) on the controller
circuit board in the electrical parts box.
(4) Loosen the 2 wire clamps on top of the electrical parts box.
(5) Pull out the thermistor <Plate HEX liquid> (TH6) and ther-
mistor <Outdoor> (TH7) from the sensor holder.
Note: In case of replacing thermistor <Plate HEX liquid>
(TH6) or thermistor <Outdoor> (TH7), replace it
together.
Photo 12
Lead wire of
thermistor
<Outdoor>
(TH7)
Sensor holder
6. Removing the thermistor <Discharge> (TH4)
(1) Remove the service panel. (See Photo 1.)
(2) Disconnect the connector TH4 (white) on the controller cir-
cuit board in the electrical parts box.
(4) Loosen the wire clamps bottom of the electrical parts box
and separator.
(5) Pull out the thermistor <Discharge> (TH4) from the sensor
holder.
7. Removing the thermistor <Liquid> (TH3) and thermistor
<suction> (TH33)
(1) Remove the service panel. (See Photo 1.)
(2) Disconnect the connectors TH3 (white) and TH33 (yellow)
on the controller circuit board in the electrical parts box.
(3) Loosen the wire clamps bottom of the electrical parts box
and separator.
(4) Pull out the thermistor <Liquid> (TH3), <Suction> (TH33)
from the sensor holder.
Photo 11
4-way value
Thermistor <Plate HEX liquid>(TH6)
Photo 13
STAY
Compressor (MC)
Photo 14
Thermistor <Liquid>
High pressure
sensor (63HS)
67
PHOTOS
Low pressure
switch (63L)
High pressure sensor (63HS)
Thermistor<Discharge>
Thermistor <Suction>
(TH3)
Compressor (MC)
(TH33)