Mitsubishi Electric TRANE TPKA0A0121HA70A Service Manual page 39

OPERATION PROCEDURE
8. Removing the pipe temperature thermistor/liquid
and the condenser/evavorator temperature thermis-
tor
(1) Remove the front panel. (Refer to step 2)
(2) Remove the electrical box cover.
(3) Remove the motor band.
(4) Cut the wiring fixed band.
(5) Remove the pipe temperature thermistor/liquid and the
condenser/evavorator temperature thermistor.
(6) Disconnect the connector (CN44) on the indoor
controller board.
9. Removing the heat exchanger
(1) Remove the front panel (Refer to step 2) and the corner
panel at right lower side.
(2) Remove the electrical box (Refer to step 4) and the nozzle
assembly (Refer to step 5).
(3) Remove the motor band.
(4) Remove the pipe thermistors (Refer to step 8).
(5) Disconnect the connector (CN60) on the indoor controller
board and the connector for ground wire. (See Photo 5)
(6) Remove the screws fixing the left side of the heat
exchanger.
(7) Remove the heat exchanger.
10. Removing the room temperature thermistor
(1) Remove the front panel (Refer to step 2).
(2) Remove the electrical box cover.
(3) Remove the room temperature thermistor.
(4) Disconnect the connector (CN20) on the indoor controller
board.
OCHT637
PHOTOS/FIGURES
Photo 12
Heat exchanger
Photo 13
Heat exchanger
Water cover
Nozzle assembly
Photo 14
Screw (top cover)
Nozzle assembly
39
Condenser/evaporator tem-
perature thermistor (TH5)
Pipe temperature thermistor/
liquid (TH2)
Electrical box cover (side)
Electrical box cover (top)
Screw (side cover)
Screw (top cover)
Switch board cover
Holder of
IR wireless
controller board
Screw (side cover) Electrical box
cover (top)
Electrical box
cover (side)
Room temp.
thermistor
(TH1)
Thermistor
holder
Screw
(side cover)
Switch holder
Holder of
IR wireless
controller board
Screw
(side
cover)