Mitsubishi Electric PUHZ-ZRP100VKA3 Service Manual page 107

OPERATING PROCEDURE
6. Removing the thermistor <Ambient> (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. (See Photo 4 or 5)
(4) Loosen the fastener for the lead wire in the electrical parts
box.
[Removing the thermistor <Ambient> (TH7) for V model]
(5) Remove the cont. box top fixing screws (4 on top/ 4 x 10)
to remove the cont. box top. (See photo 6)
(6) Loosen the lead wire from the edge cover in the electrical
parts box.
(7) Loosen the clamp for the lead wire in the electrical parts box.
(8) Pull out the thermistor <Ambient> (TH7) from thermistor holder.
[Removing the thermistor <Ambient> (TH7) for Y model]
(5) Loosen the clamps for the lead wire on top of the electrical
parts box.
(6) Pull out the thermistor <Ambient> (TH7) from thermistor 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.5 in the previous page to remove the
thermistor <2-phase pipe>(TH6).
7. Removing the thermistor <Liquid> (TH3), thermistor
<Discharge> (TH4), and thermistor <Comp. Surface>
(TH33)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Disconnect the connector, TH3 (WHT), TH4 (WHT), and
TH33 (BLK) on the controller circuit board in the electrical
parts box. (See Photo 4 or 5)
(4) Loosen the fastener for the lead wire on the controller circuit
board in the electrical parts box.
(5) Loosen the clamp for the lead wire on separator.
(6) Pull out the thermistor <Liquid> (TH3) from thermistor clip.
(7) Pull out the thermistor <Discharge> (TH4) from thermistor holder.
(8) Remove the top damper, then pull out the thermistor
<Comp. surface> (TH33) from thermistor holder.
OCH645
Photo 12
Lead wire of thermistor <Ambient> (TH7)
Photo 13
Separator
Thermistor
<Comp. Surface>
(TH33)
Thermistor<Discharge>(TH4)
Photo 14
Thermistor <Liquid> (TH3)
107
PHOTOS
Sensor holder
Damper (body)
Valve bed
Compressor
Power receiver