Mitsubishi Electric PKA-A12HA Service Manual page 33

OPERATION PROCEDURE
8. REMOVING THE LIQUID PIPE THERMISTOR AND
COND/EVA TEMP. THERMISTOR
(1) Remove the front panel. (Refer to 2)
(2) Remove the electrical box cover.
(3) Remove the motor band.
(4) Cut the wiring fixed band.
(5) Remove the liquid pipe thermistor and cond/eva temp. ther-
mistor.
(6) Disconnect the connector (CN44) on the indoor
controller board.
9. REMOVING THE HEAT EXCHANGER
(1) Remove the front panel (Refer to 2.) and the corner panel
at right lower side.
(2) Remove the electrical box (Refer to 4.) and the nozzle
assembly (Refer to 5.).
(3) Remove the motor band.
(4) Remove the pipe thermistors (Refer to 8.).
(5) Disconnect the connector (CN60) on the indoor controller
board and the connector for ground wire. (See Photo 6)
(6) Remove the screws fixing the left side of the heat
exchanger. (See Photo 10)
(7) Remove the heat exchanger.
10. REMOVING THE ROOM TEMPERATURE THERMISTOR
(1) Remove the front panel (Refer to 2.).
(2) Remove the electrical box cover.
(3) Remove the room temperature thermistor.
(4) Disconnect the connector (CN20) on the indoor controller
board.
NOTE: When room temp. thermistor is replaced, be sure
to use service parts No. R01 N20 202.
Photo 13
Heat exchanger
Photo 14
Heat exchanger
Water cover
Nozzle assembly
Photo 15
33
PHOTOS
Condenser/evaporator temp.
thermistor (TH5)
Liquid pipe thermistor (TH2)
Electrical box cover (side)
Electrical box cover (top)
Screw (side cover)
Screw (top cover)
Switch board cover
Holder of wireless
controller board
Electrical box
Room temp. thermistor
(TH1)
Screw
(side
cover)
Wire clip