Mitsubishi Electric SVZ-KP18NA Service Manual page 42

OPERATING PROCEDURE
4. Removing the discharge temperature thermistor,
defrost thermistor, outdoor heat exchanger tempera-
ture thermistor and ambient temperature thermistor
(1) Remove the cabinet and panels. (Refer to procedure 1.)
(2) Disconnect the lead wire to the reactor and the following
connectors:
<Inverter P.C. board>
CN641 (Defrost thermistor and discharge temperature ther-
mistor)
CN643 (Ambient temperature thermistor)
CN644 (Outdoor heat exchanger temperature thermistor)
(3) Pull out the discharge temperature thermistor from its hold-
er. (See Photo 8)
(4) Pull out the defrost thermistor from its holder. (See Photo 6)
(5) Pull out the outdoor heat exchanger temperature thermistor
from its holder. (See Photo 6)
(6) Pull out the ambient temperature thermistor from its holder.
(See Photo 6)
5. Removing outdoor fan motor
(1) Remove the top panel, cabinet and service panel. (Refer to
procedure 1.)
(2) Disconnect the following connectors:
<Inverter P.C. board>
CN931 and CN932 (Fan motor)
(3) Remove the propeller.
(4) Remove the screws fixing the fan motor.
(5) Remove the fan motor.
6. Removing the compressor and 4-way valve
(1) Remove the top panel, cabinet and service panel. (Refer to
procedure 1.)
(2) Remove the back panel. (Refer to procedure 1.)
(3) Remove the inverter assembly. (Refer to procedure 2.)
(4) Recover gas from the refrigerant circuit.
NOTE:
Recover gas from the pipes until the pressure gauge
shows 0 PSIG.
(5) Detach the welded part of the suction and the discharge
pipe connected with compressor.
(6) Remove the compressor nuts.
(7) Remove the compressor.
(8) Detach the welded part of 4-way valve and pipe. (See
Photo 5)
TCH022
Photo 6
Outdoor heat
exchanger temperature
thermistor
Photo 7
Screws of
the outdoor
fan motor
Photo 8
Welded part of the
discharge pipe
42
PHOTOS
Ambient temperature
thermistor
Defrost thermistor
Discharge temperature
thermistor
Welded part of the
suction pipe