Mitsubishi Electric PUZ-HA30NHA4 Service Manual page 92

OPERATING PROCEDURE
4. Removing the thermistor <Outdoor 2-phase pipe> (TH6)
and thermistor <Outdoor>(TH7)
(1) Remove the service panel. (See Figure 1.)
() Remove the top panel. (See Figure 1.)
() Disconnect the connectors TH7/6 (red) on the controller
circuit board in the electrical parts box.
() Loosen the clamp for the lead wire in the rear of the electri-
cal parts box.
() Pull out the thermistor <Outdoor -phase pipe> (TH6) and
thermistor <Outdoor> (TH7) from the sensor holder.
Note: In case of replacing thermistor <Outdoor 2-phase
pipe> (TH6) or thermistor <Outdoor> (TH7), replace
it together.
Photo 5
Lead wire of
thermistor
<Outdoor>
(TH7)
Sensor holder
5. Removing the thermistor <Discharge> (TH4)
(1) Remove the service panel. (See Figure 1.)
() Disconnect the connector TH (white) on the controller cir-
cuit board in the electrical parts box.
() Loosen clamps for the lead wire in the rear of the electrical
parts box (See Photo .) and separator (See Photo 6.).
() Pull out the thermistor <Discharge> (TH) from the sensor
holder.
6. Removing the thermistor <Outdoor pipe> (TH3) (TH32) (TH33)
(1) Remove the service panel. (See Figure 1.)
() Disconnect the connectors, TH (white) and TH (black),
TH (yellow) on the controller circuit board in the electri-
cal parts box.
() Loosen clamps for the lead wire in the rear of the electrical
parts box (See Photo .) and separator (See Photo 6.).
() Loosen clamp for the lead wire for TH.
() Pull out the thermistor <Outdoor pipe> (TH), (TH) (TH)
from the sensor holder.
(TH : See Photo 10.)
Photo 8
Photo 4
Photo 6
Clamp
Thermistor
<Discharge>
Compressor
(MC)
Photo 7
Low pressure
switch(6L)
Thermistor
<Outdoor pipe>
(TH)
Clamp
(for TH)
9
PHOTOS
Heat
exchanger
Thermistor
<Outdoor
-phase pipe>
(TH6)
Clamp
Electrical parts
box
Separator
Muffler
Thermistor <Outdoor pipe>
Power
receiver
(TH)