9-2.MSZ-A24NA MSY-A24NA

 

OPERATING PROCEDURE

 

PHOTOS

1. Removing the front panel

Photo 1

(1)

Remove the screw caps of the front panel. Remove the

 

Front panel

 

 

screws.

 

 

 

(2)

Pull the panel down to your side slightly and unhook the

 

 

 

 

catches at the top.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Corner box

 

 

 

 

 

 

 

Screws

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2. Removing the electronic control P.C. board, the receiver

Photo 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Screw of the ground wire

 

 

 

 

 

P.C. board and the display P.C. board

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(1)

Remove the front panel. (Refer to 1.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(2)

Remove the corner box

 

 

 

 

 

 

 

 

 

 

 

Indoor

 

 

 

 

 

 

(3)

Remove the screw of the electrical cover.

 

 

 

 

 

 

 

 

 

 

 

electronic

 

 

 

 

 

 

 

Remove the electrical cover and T.B. SW cover.

 

 

 

 

 

 

 

 

 

 

 

control

 

 

 

 

 

 

(4)

Remove the screw of the ground wire, which is solder-

 

 

 

 

 

 

 

 

 

 

 

P.C. board

 

 

 

 

 

 

 

mounted to the electronic control P.C. board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(5)

Remove the R.L holder.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(6)

Remove the screw of the conduit cover.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T.B. SW cover

 

(7)

Remove the conduit cover.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(8)

While pulling the electronic control P.C. board forward little

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

by little, disconnect all the connectors from the board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Screw of

 

 

(9)

Remove the electronic control P.C. board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T.B. SW cover

 

 

(10) Open the R.L holder, remove the receiver P.C. board and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Screw of the

 

 

 

the display P.C. board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

electrical cover

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Conduit cover

 

 

 

 

 

 

 

 

 

 

Receiver

 

 

 

 

 

 

 

 

 

 

P.C. board

 

 

 

R.L

 

Screw of

 

 

 

 

holder

 

conduit cover

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3. Removing the electrical box

Photo 3

 

 

Screw of the

(1)

Remove the front panel. (Refer to 1.)

 

 

 

 

ground wire

 

 

 

 

 

 

 

 

 

 

 

 

 

(2)

Remove the electrical cover. (Refer to 2.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(3)

Disconnect the connector of the indoor coil thermistors.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(4)

Disconnect the indoor fan motor connector (CN211) and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the vane motor connector (CN151 and CN152) on the elec-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tronic control P.C. board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(5)

Remove the screw of ground wire to the heat exchanger.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(6)

Remove the fan motor lead wire and indoor coil thermistor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

from the electrical box.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(7)

Remove the lead wire of vane motor from the bottom of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

electrical box.

 

 

 

 

 

 

 

Screw of the

 

 

 

 

 

(8)

Remove the screw fixing the electrical box and remove the

 

 

 

 

 

 

 

electrical box

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

electrical box.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

28

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Logitech OB450 REVISED EDITION-B, MSZ-A09NA MSZ-A24NA MSY-A24NA Operating Procedure Photos, Removing the front panel
Page 27 Page 29

MSZ-A09NA, OB450 REVISED EDITION-B specifications

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