Mitsubishi Electric MXZ-8A140VA1 Technical & Service Manual page 83

OPERATING PROCEDURE
4. Removing the thermistor <Outdoor 2-phase pipe> (TH6)
(1) Remove the service panel. (See Figure 1.)
(2) Remove the top panel. (See Figure 1.)
(3) Disconnect the connectors, TH6 and TH7 (red), on the con-
troller 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 Figure 1.)
(2) Remove the top panel. (See Figure 1.)
(3) Disconnect the connector TH7 (red) on the controller cir-
cuit board in the electrical parts box.
(4) Loosen the clamp for the lead wire in the rear of the elec-
trical parts box. (See Photo 4.)
(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 ther-
mistor <Discharge> (TH4)
(1) Remove the service panel. (See Figure 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 electri-
cal parts box. (See Photo 4.)
(4) Pull out the thermistor <Outdoor pipe> (TH3) and thermis-
tor <Discharge> (TH4) from the sensor holder.
Photo 4
Controller circuit board (C.B.)
w This connecter is not equipped
with MXZ-8A140VA
Photo 5
Lead wire of thermistor
<Outdoor> (TH7)
Lead wire of thermistor
Photo 6
Compressor (MC)
83
PHOTOS
Thermistor
<Outdoor 2-phase pipe>
(TH6)
Clamp
/VA /VA .
1 2 3
MXZ-8A140VA/VA
1
Sensor holder
MXZ-8A140VA
Sensor holder
<Outdoor>
(TH7)
Thermistor <Outdoor pipe>
Thermistor <Discharge> (TH4)
/VA
2
3
(TH3)