Mitsubishi MXZ-8B140VA Technical & Service Manual page 65

OPERATING PROCEDURE
4. Removing the thermistor <Outdoor 2-phase pipe> (TH6)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Disconnect the connectors, TH6 and TH7 (red), on the
controller circuit board in the electrical parts box.
(4) Loosen the clamp for the lead wire in the rear of the
electrical parts box.
(5) Pull out the thermistor <Outdoor 2-phase pipe> (TH6) from
the sensor holder.
Note: In case of replacing thermistor <Outdoor 2-phase pipe>
(TH6), replace it together with thermistor <Outdoor>
(TH7) since they are combined together. Refer to No.5
below to remove thermistor <Outdoor>.
5. Removing the thermistor <Outdoor> (TH7)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Disconnect the connector TH7 (red) on the controller circuit
board in the electrical parts box.
(4) Loosen the clamp for the lead wire in the rear of the
electrical parts box. (See Photo 5)
(5) Pull out the thermistor <Outdoor> (TH7) from the sensor
holder.
Note: In case of replacing thermistor <Outdoor> (TH7),
replace it together with thermistor <Outdoor 2-phase
pipe> (TH6), since they are combined together. Refer
to No.4 above to remove thermistor <Outdoor 2-phase
pipe>.
6. Removing the thermistor <Outdoor pipe> (TH3) and
thermistor <Compressor> (TH4)
(1) Remove the service panel. (See Photo 1)
(2) Disconnect the connectors, TH3 (white) and TH4 (white),
on the controller circuit board in the electrical parts box.
(3) Loosen the clamp for the lead wire in the rear of the
electrical parts box. (See Photo 5)
(4) Pull out the thermistor <Outdoor pipe> (TH3) and
thermistor <Compressor> (TH4) from the sensor holder.
OCH480D
Photo 5
Controller circuit board
(C.B.)
Photo 6
Lead wire of thermistor
<Outdoor> (TH7)
Photo 7
Thermistor
<Compressor> (TH4)
65
PHOTOS
Thermistor
<Outdoor 2-phase pipe> (TH6)
Clamp
Sensor holder
Thermistor
<Outdoor pipe> (TH3)
Compressor
(MC)