Mitsubishi Electric PKA Series Service Manual page 32

OPERATION PROCEDURE
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 16
HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
CCopyright 2009 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.
Distributed in Mar. 2009 No.OCH453 PDF 7
Made in Japan
Room temp. thermistor
(TH1)
Wire clip
Caution:
There is a case that room
temp. thermistor (TH1) is
fixed with electrical box
side cover screw.
PHOTOS
Photo 14
Electrical box cover (side)
Electrical box cover (top)
Heat exchanger
Screw (side cover)
Screw (top cover)
Water cover
Switch board cover
Nozzle assembly
Photo 15
Terminal
block (TB1)
Room temp. thermistor (TH1)
New publication, effective Mar. 2009
Specifications subject to change without notice
Screw
Holder of wireless (side
controller board
cover)
Indoor controller board (I.B)
Fixture
(right)