Mitsubishi Electric PUHZ-ZRP35VKA Service Manual page 137

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 connector TH7/6 (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: When replacing thermistor <Outdoor 2-phase pipe>
(TH6), replace it together with thermistor <Outdoor>
(TH7) since they are combined together.
Refer to procedure 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 TH7/6 (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: When replacing thermistor <Outdoor> (TH7), replace
it together with thermistor <Outdoor 2-phase pipe>
(TH6), since they are combined together.
Refer to procedure No.4 above to remove thermistor
<Outdoor 2-phase pipe>.
6. Removing the thermistor <Outdoor pipe> (TH3) (TH33) and
thermistor <Discharge> (TH4), thermistor <Comp. surface>
(TH32)
(1) Remove the service panel. (See Photo 1)
(2) Disconnect the connectors, TH3 (white) and TH4 (white),
TH33 (yellow), TH32 (black) on the controller circuit board
in the electrical parts box.
(3) Loosen the clamp for the lead wire under the electrical
parts box.
(4) Pull out the thermistor <Outdoor pipe> (TH3), (TH33) and
thermistor <Discharge> (TH4) from the sensor holder.
(TH33: See Photo 9 or Figure 1)
[Removing the thermistor <Comp. surface> (TH32)]
(5) Remove the sound proof cover (upper) for compressor.
(6) Pull out the thermistor <Comp. surface> (TH32) from the
holder of the compressor shell.
Photo 8
Sound proof cover
OCH527B
Controller
circuit board (C.B.)
Electrical parts box
Photo 7
Thermistor
<Comp. surface> (TH32)
137
PHOTOS
Photo 5
Photo 6
Lead wire of thermistor <Outdoor> (TH7)
Thermistor <Outdoor pipe> (TH3)
Compressor
Thermistor <Outdoor
2-phase pipe>(TH6)
Clamp
Sensor holder
Thermistor
<Discharge>
(TH4)