Mitsubishi Electric PUHZ-W50VHA-BS Service Manual page 91

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) and
thermistor <Comp. surface> (TH34)
(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.
[Removing the thermistor <Comp. surface> (TH34)]
for HW HA2R3 models
•
(5) Pull out the thermistor <Comp. surface> (TH34) from the
holder of the compressor shell.
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.
OCH439H
Photo 11
4-way value
Thermistor <Plate HEX liquid>
(TH6)
High pressure
Photo 13
sensor (63HS)
Stay Compressor (MC)
Photo 14
Thermistor <Liquid> (TH3)
High pressure
sensor (63HS)
91
PHOTOS
Low pressure
switch (63L)
Thermistor
<Comp. surface> (TH34)
Thermistor
<Discharge> (TH4)
Thermistor <Suction> (TH33)
Compressor (MC)