Mitsubishi Electric PUHZ-RP3VHA Technical & Service Manual page 72

OPERATING PROCEDURE
4. Removing the condenser/evaporator temperature
thermistor (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
controller 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 condenser/evaporator temperature thermistor
(TH6) from the sensor holder.
Note: In case of replacing condenser/evaporator temperature
thermistor (TH6), replace it together with outside
temperature thermistor (TH7) since they are combined
together. Refer to No.5 below to remove outside
temperature thermistor.
5. Removing outside temperature thermistor (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
board in the electrical parts box.
(4) Loosen the clamp for the lead wire in the rear of the
electrical parts box. (See photo 4.)
(5) Pull out the outside temperature thermistor (TH7) from
the sensor holder.
Note: In case of replacing outside temperature thermistor
(TH7), replace it together with condenser/evaporator
temperature thermistor (TH6), since they are combined
together. Refer to No.4 above to remove
condenser/evaporator temperature thermistor.
6. Removing outdoor pipe temperature thermistor (TH3) and
discharge temperature thermistor (TH4)
(1) Remove the service panel. (See figure 1.)
(2) Disconnect the connectors, TH3 (white) and TH4 (white),
on the controller board in the electrical parts box.
(3) Loosen the clamp for the lead wire in the rear of the
electrical parts box. (See photo 4.)
(4) Pull out the outdoor pipe temperature thermistor (TH3)
and discharge temperature thermistor (TH4) from the
sensor holder.
PHOTOS
Photo 4
Electrical
parts box
Controller
board (C.B.)
Photo 5
Outside temperature
thermistor (TH7)
Photo 6
Discharge temperature
thermistor (TH4)
72
Condenser/evaporator
temperature thermistor
(TH6)
Sensor holder
Outdoor pipe temperature
thermistor (TH3)
Clamp