Mitsubishi Electric PUZ-HWM140VHA Service Manual page 71

OPERATING PROCEDURE
5. Removing the thermistor <Plate HEX liquid> (TH34) and
thermistor <Ambient> (TH7)
(1) Remove the service panel. (Refer to procedure 1)
(2) Remove the top panel. (Refer to procedure 1)
(3) Disconnect the connectors, TH7/34 (red) on the control-
ler circuit board in the electrical parts box.
(4) Loosen the 2 wire clamps on top of the electrical parts box.
(5) Loosen the fastener of the electrical parts box to discon-
nect the lead wire.
(6) Pull out the thermistor <Plate HEX liquid> (TH34) and
thermistor <Ambient> (TH7) from the sensor holder.
Note: In the case of replacing thermistor <Plate HEX liq-
uid> (TH34) or thermistor <Ambient> (TH7), replace
it together.
Photo 14
Lead wire of
thermistor
<Ambient>
(TH7)
Sensor holder
6. Removing the thermistor <Discharge> (TH4) and thermistor
<Comp. surface> (TH33)
(1) Remove the service panel. (Refer to procedure 1)
(2) Disconnect the he white connector for TH3 and black
connector for TH32 on the controller circuit board in the
electrical parts box.
(3) Disconnect the lead wire from the cable strap on the left
of the electrical parts box.
(4) Loosen the wire clamps of the separator to disconnect
the lead wire.
(5) Pull out the thermistor <Discharge> (TH4) from the sensor
holder.
[Removing the thermistor <Comp. surface> (TH33)]
(5) Pull out the thermistor <Comp. surface> (TH33) from the
holder of the compressor shell.
7. Removing the thermistor <Liquid> (TH3) and thermistor
<Suction> (TH32)
(1) Remove the service panel. (Refer to procedure 1)
(2) Disconnect the white connector for TH3 and black con-
nector for TH32 on the controller circuit board in the elec-
trical parts box.
(3) Disconnect the lead wire from the cable strap on the left
of the electrical parts box.
(4) Loosen the wire clamps of the separator to disconnect
the lead wire.
(5) Pull out the thermistor <Liquid> (TH3), <Suction> (TH32)
from the sensor clip.
OCH748
PHOTOS/FIGURES
Photo 13
4-way valve
Photo 15
Stay
Compressor (MC)
Photo 16
Thermistor <Liquid> (TH3)
71
Thermistor <Plate HEX liquid>
(TH34)
Thermistor
<Comp. surface> (TH33)
Thermistor
<Discharge> (TH4)
Thermistor <Suction> (TH32)
Compressor (MC)