Mitsubishi Electronics MSH-A18ND service manual Disassembly Instructions

Page 18

9

DISASSEMBLY INSTRUCTIONS

<"Terminal with locking mechanism" Detaching points>

The terminal which has the locking mechanism can be detached as shown below. There are two types ( Refer to (1) and (2)) of the terminal with locking mechanism. The terminal without locking mechanism can be detached by pulling it out.

Check the shape of the terminal before detaching.

(1) Slide the sleeve and check if there is a locking lever or not.

Sleeve

1Slide the sleeve.

2Pull the terminal while

Locking lever pushing the locking lever.

(2)The terminal with this connector has the locking mechanism.

1Hold the sleeve, and pull out the terminal slowly.

Connector

MSH-A18ND MSH-A24ND

INDOOR UNIT

OPERATING PROCEDURE

 

PHOTOS

1. Removing the front panel

Photo 1

(1) Remove the screw caps of the front panel.

 

 

 

 

Front panel

 

Remove the screws.

 

 

 

 

 

(2)Pull the panel down to your side slightly and unhook the catches at the top.

 

 

 

 

 

Screws

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

Photo 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

Screws of the ground wire

 

 

 

 

 

 

(1)

Remove the front panel. (Refer to 1.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(2)

Remove the screw of the electrical cover.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Remove the electrical cover.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(3)

Remove the screws of the V.A. clamp.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Remove the V.A. clamp.

 

 

 

 

 

 

 

 

Fan motor

 

 

 

(4)

Remove the screw of the terminal block.

 

 

 

 

 

 

 

 

connectors

 

 

 

(5)

Remove the screws of the ground wire.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(6)

Disconnect all the connectors and all the lead wires on the

 

 

 

 

 

 

 

 

Vane motor

 

 

 

 

electronic control P.C. board.

 

 

 

 

 

 

 

 

connector

 

 

 

(7)

Remove the R.L holder.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor

(8)

Remove the electronic control P.C. board.

 

 

 

 

 

 

 

 

electronic

 

 

 

 

 

(9)

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

 

 

 

 

 

 

 

 

control

 

 

 

 

 

 

the display P.C. board.

 

 

 

 

 

 

 

 

P.C.board

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Screw of

 

 

 

 

 

 

 

 

 

 

the electrical

 

 

 

 

 

 

 

 

 

 

 

cover

 

 

 

Screw of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Receiver

Screw of the

 

 

R.L

 

 

 

 

the terminal

holder

 

P.C.

V.A. clamp

 

 

 

block

 

 

 

board

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Image 18
Contents Contents Revised EDITION-BPart Names and Functions AccessoriesTechnical Changes Indoor Unit MSH-A18ND MSH-A24NDRemote Controller MSH-A18ND MSH-A24ND Specification MSH-A18ND MSH-A24NDOutlines and Dimensions MSH-A18ND MSH-A24ND Indoor UnitWiring Diagram MSH-A18ND Indoor UnitMSH-A24ND Indoor Unit Refrigerant System Diagram Service Functions MSH-A18ND MSH-A24NDHow to release Auto Restart Function Troubleshooting Take care of the following during servicingInstruction of troubleshooting Troubleshooting check table Trouble criterion of main parts Check of indoor fan motor Check of indoor electronic control P.C. board How to check mis-wiring Indoor electronic control P.C. board Disassembly Instructions MSH-A18ND MSH-A24ND Indoor Unit Operating Procedure PhotosOperating Procedure Photos Parts List non-RoHS compliant Accessory and Remote Controller AIR Cleaning Filter RoHS Parts List RoHS compliant Vane Motor Vertical AIR Cleaning Filter Page Page Made in Japan