Mitsubishi Electronics MSZ-FA25VA Operating Procedure Photos, Removing the electrical box

Page 32

OPERATING PROCEDURE

PHOTOS

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

Photo 3

power monitor receiver P.C. board, i-see Sensor,

 

SW P.C. board and the terminal block

 

(1)Remove the horizontal vane, the panel (Refer to 1.) and the corner box.

(2)Remove the screw of the V.A. clamp, and then the indoor/outdoor connecting wire.(See Photo 3.)

(3)

Remove the switch holder from the electrical cover.

 

 

 

(See Photo 4.)

Screws of

 

(4)

Remove the screw of the electrical cover, and then the

the terminal

 

 

electrical cover. (See Photo 4.)

block cover

 

(5)

Remove the ground wire connected to the indoor electronic

 

 

 

control P.C. board from the electrical box. (See Photo 5.)

 

 

(6)

Unhook the power monitor receiver P.C. board holder from

 

 

 

the catch. (See Photo 5.)

 

 

(7)

Open the rear cover of the power monitor receiver P.C.

Drain hose

Screw of the V.A. clamp

 

board holder and pull out the power monitor receiver P.C.

 

 

 

 

board.

 

 

(8)

Remove the screws of the i-see Sensor cover and the i-see

 

 

 

Sensor motor, and then the i-see Sensor motor.

Photo 4

 

(9)Open the i-see Sensor holder and pull out the i-see Sensor.

(10)Open the switch holder and pull out SW P.C. board.

(11)Pull the electronic control P.C. board slightly toward you

 

from the electrical box, and disconnect TAB3 and all the

 

 

connectors on the electronic control P.C. board.

 

 

(LD101 and LD105 are direct-mounted to the electronic

 

 

control P.C. board.)

Switch holder

(12)

Pull out the electronic control P.C. board from the electrical

 

box.

 

(13)

Remove the ground wire connected to the heat exchanger

 

 

from the electrical box. (See Photo 5.)

Screw of the

(14)

Unhook the catches of the electrical box, and pull out the

electrical cover.

 

electrical box.

 

(15)Remove the screws of the terminal block cover, and then the terminal block cover and the terminal block holder. (See Photo 3.)

(16)Remove the terminal block by sliding it.

 

Photo 5

Fan motor

 

Ground wires

 

 

connector (CN211)

3. Removing the electrical box

 

Connector of the

(1) Remove the horizontal vane, the panel (Refer to 1.) and the

 

interlock switch(Fan)

 

(CN1R1)

corner box.

 

 

 

(2) Remove the screw of the V.A. clamp, and then the indoor/

 

Indoor coil thermistor

outdoor connecting wire.(See Photo 3.)

 

 

connector (CN112)

(3) Remove the switch holder and the electrical cover.

 

 

 

(See Photo 4.)

 

Connector of the

(4) Remove the ground wire connected to the heat exchanger

 

plasma power

from the electrical box.(See Photo 5.)

 

P.C.board(CN1T1)

 

 

(5) Disconnect the following connectors on the electronic

 

Connector of the

control P.C. board; the fan motor connector <CN211>, the

 

safety device(Plasma

indoor coil thermistor connector <CN112>, the vane motor

 

unit) (CN1T2)

connector <CN151>, the connector of the interlock switch

 

Vane motor

(Fan) of the horizontal vane <CN1R1>, the connector of

 

connector (CN151)

the safety device (plasma unit) <CN1T2>, the connector of

 

 

the plasma power P.C. board <CN1T1>, the connector of

 

 

the front panel driving motor <CN1U1>.

 

Connector of the

(6) Unhook the catches of the electrical box, and pull out the

 

front panel driving

electrical box. (See Photo3.)

Power monitor

motor (CN1U1)

 

receiver P.C. i-see Sensor

 

board holder

i-see Sensor

 

 

cover

32

Image 32
Contents Contents MSZ-FA25VA E1 MSZ-FA35VA E1Front panel opening/closing output gear Technical ChangesGeneralized stepping motor Wash reset switch Open Closed Receiving section Part Names and FunctionsIndoor Unit MSZ-FA25VA MSZ-FA35VA See control operationMSZ-FA25VA E1 MSZ-FA35VA E1 Accessories Remote ControllerWhen outdoor unit is MXZ type SpecificationSpecifications and rating conditions of main electric parts MSZ-FA35VA E1 Noise Criteria CurvesMSZ-FA25VA E1 Outlines and Dimensions MSZ-FA25VA E1 MSZ-FA35VA E1Indoor Unit Unit mmWiring Diagram Refrigerant System DiagramMSZ-FA25VA E1 Indoor Unit MSZ-FA35VA E1 Indoor UnitService Functions How to modify the remote controller P.C. boardRemote controller model KM05A OperationRemote controller Troubleshooting Install RemoveInformation for Multi System AIR Conditioner Outdoor Unit MXZ seriesFailure mode recall function OFFTo identify the error.Refer to 9-6.For G Indoor unit failure mode table Plasma DeodorizingPlasma AIR Purifying OFFInstruction of troubleshooting StartTroubleshooting check table · Flashing of Power lamp indicates abnormalitiesPurifying PlasmaAIR Trouble criterion of main parts Check of indoor fan motor Troubleshooting flowWhen Power lamp flashes 3-time Indoor fan does not operate Check of remote controller and receiver P.C. board Indoor electronic control P.C.Board How to check mis-wiring and serial signal error LEDCheck of installation of the horizontal vane Safety Deviceplasma Unit Plasma Deodorizing 0V?Continuously flash? AIR Purifying 0V?Check of auto front panel Indoor unit and outdoor unit do not operateElectromagnetic noise enters into TV sets or radios YesTest point diagram and voltage Power monitor receiver P.C. boardPlasma power P.C. board Indoor electronic control P.C. boardDisassembly Instructions Removing the panel PhotoOperating Procedure Photos Removing the electrical boxRemoving the horizontal vane motor unit Photo Removing the vertical vane motor unit PhotoRemoving the indoor fan motor and the line flow Photo FanRemoving the plasma power P.C. board Photo Parts List Accessory and Remote ControllerSafety Plasma Indoor Unit Electrical Parts and Functional PartsIndoor Unit Heat Exchanger Motor Receiver P.C Board HolderSymbol Qty/unit Part name Wiring Diagram E02509 504Optional Parts Deodorizing Ceramic FilterPage Specifications subject to change without notice