Mitsubishi Electric PUZ-HA30NHA5 Service Manual page 96

OPERATING PROCEDURE
4. Removing the thermistor <2-Phase Pipe> (TH6)
(1) Remove the service panel. (See Figure 1)
(2) Remove the top panel. (See Figure 1)
(3) Disconnect the connector TH7/6 (RD) on the controller
circuit board in the electrical parts box. (See Photo 3)
(4) Loosen the fastener for the lead wire in the electrical parts
box.
(5) Loosen the clamp for the lead wire on the rear of electrical
parts box.
(6) Pull out the thermistor <2-phase pipe> (TH6) from
thermistor holder.
Note: When replacing thermistor <2-phase pipe> (TH6),
replace it together with thermistor <Ambient> (TH7)
since they are combined together. Refer to procedure
No.5 to remove the thermistor <Ambient> (TH7).
5. Removing the thermistor <Ambient> (TH7)
(1) Remove the service panel. (See Figure 1)
(2) Remove the top panel. (See Figure 1)
(3) Disconnect the connector TH7/6 (RD) on the controller
circuit board in the electrical parts box. (See Photo 3)
(4) Loosen the fastener for the lead wire in the electrical parts box.
(5) Loosen the clamps for the lead wire on rear of the
electrical parts box.
(6) Pull out the thermistor <Ambient> (TH7) from sensor holder.
Note: When replacing thermistor <Ambient> (TH7), replace
it together with thermistor <2-phase pipe> (TH6),
since they are combined together. Refer to procedure
No.4 to remove the thermistor <2-phase pipe>(TH6).
6. Removing the thermistor <Discharge> (TH4)
(1) Remove the service panel. (See Figure 1)
(2) Disconnect the connector TH4 (WT) on the controller
circuit board in the electrical parts box. (See Photo 3)
(3) Loosen the fastener, cable strap and band for the lead
wire on the controller circuit board in the electrical parts
box.
(4) Loosen clamps for the lead wire on the separator.
(5) Pull out the thermistor <Discharge> (TH4) from the
thermistor holder.
7. Removing the thermistor <Liquid> (TH3) and thermistor
<Suction> (TH32).
(1) Remove the service panel. (See Figure 1)
(2) Disconnect the connector, TH3 (WT), TH32 (BK) on the
controller circuit board in the electrical parts box. (See
Photo 3)
(3) Loosen the fastener, cable strap and band for the lead
wire on the controller circuit board in the electrical parts
box.
(4)Loosen the clamp for the lead wire on separator.
(5) Pull out the thermistor <Liquid> (TH3) from thermistor
holder.
(6) Pull out the thermistor <Suction> (TH32) from thermistor
holder.
OCH607
PHOTOS
Photo 4
Photo 5
Lead wire of
thermistor
<Ambient>
(TH7)
Sensor holder
Photo 6
Separator
Clamp
Thermistor
<Discharge>
(TH4)
Compressor
(MC)
Photo 7
Thermistor
<Liquid>
(TH3)
Clamp
(for TH3)
Photo 8
96
Heat
exchanger
Thermistor
<2-phase pipe>
(TH6)
Clamp
Electrical parts
box
Muffler
Power receiver
Low pressure
switch(63L)
Thermistor
<Suction>
(TH32)