Mitsubishi Electric PKA-A12LA1 Service Manual page 33

OPERATION PROCEDURE
8. REMOVING THE HEAT EXCHANGER
(1) Remove the panel and the corner box (Refer to procedure 1).
(2) Remove the electrical box (Refer to procedure 2) and the
nozzle assembly (Refer to procedure 4).
(3) Remove the water cover.
(4) Remove the pipe thermistors. (Refer to procedure 7).
(5) Remove the motor bed together with fan motor and motor
band (Refer to procedure 6).
(6) Remove 2 screws fixing the left side of the heat exchanger.
(See Photo 10)
(7) Remove the heat exchanger.
9. REMOVING THE ROOM TEMPERATURE THERMISTOR
(1) Remove the panel and corner box. (Refer to procedure 1)
(2) Remove the electrical box covers. (Refer to procedure 2)
(3) Remove the room temperature thermistor.
(4) Disconnect the connector (CN20) on the indoor controller
board.
TCH117
PHOTOS/FIGURES
Photo 12
Heat exchanger
Photo 13
Condenser/evaporator
temp. thermistor (TH5)
Liquid pipe
thermistor
(TH2)
Photo 14
Room temp. thermistor
(TH1)
33
Water cover
Connector for ground wire
Indoor controller
board