Mitsubishi Electronics MSZ-FD25VAS, MSZ-FD35VAS service manual Power monitor receiver

Page 37

 

OPERATING PROCEDURE

PHOTOS

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

Photo 2

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

 

 

 

P.C. board and the terminal block

 

 

 

(1)

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

 

 

 

(2)

Remove the screw of the V.A. clamp. Remove the V.A.

 

Screws of the

 

 

clamp and then the indoor/outdoor connecting wire. (See

 

terminal block

 

 

Photo 2)

 

cover

 

 

 

 

 

 

(3)Remove the sensor holder from the electrical cover. (See Photo 3)

(4) Remove the screw of the electrical cover, and then the electrical cover. (See Photo 3)

(5) Remove the earth wire connected to the indoor electronic control P.C. board from the electrical box. (See Photo 3.)

(6)Remove the power monitor receiver P.C. board holder. (See Photo 4.)

(7)

Pull out the i-see Sensor from the power monitor receiver

 

Drain hose

 

Screw of the V.A. clamp

 

P.C. board holder.

 

 

 

 

 

 

 

 

 

 

 

(w) Install the i-see Sensor in its former position when assem-

 

 

 

 

 

 

bling it.(Refer to Photo 5)

Photo 3

 

 

(8)

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

 

 

Earth wire

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

board.

 

 

 

 

 

(9)Open the sensor holder and pull out the SW P.C. board.

(10)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.

(11) Pull out the electronic control P.C. board from the electrical

 

 

 

 

 

 

Sensor holder

 

 

box.

 

 

 

 

 

 

 

 

(12)

Remove the earth wire connected to the heat exchanger

 

 

 

 

 

from the electrical box. (See Photo 3)

 

 

 

 

(13)

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

 

 

 

 

 

Screw of the

 

 

electrical box.

 

 

 

 

electrical cover

 

(14)

Remove the screw of the terminal block cover, and then

 

 

 

 

 

 

 

 

 

 

 

the terminal block cover and the terminal block holder.

 

 

 

 

 

(See Photo 3)

 

 

 

 

(15)

Remove the terminal block by sliding it.

Sensor holder (inside)

 

Photo 4

SW P.C. board

Plasma power P.C. board holder

i-see Sensor holder

Power monitor receiver

 

P.C. board holder

37

Image 37
Contents MSZ-FD25VA E1 MSZ-FD25VAS E1 MSZ-FD35VA E1 MSZ-FD35VAS E1 Page Technical Changes See control operation Part Names and FunctionsSpecifications and rating conditions of main electric parts SpecificationIndoor model MSZ-FD25VA MSZ-FD25VAS Noise Criteria CurvesWiring Diagram Outlines and DimensionsUnit mm Unit mm Refrigerant System DiagramTimer Short Mode Service FunctionsP.C. Board Modification for Individual Operation J1 J2Auto Restart Function Remote ControllerOperation OPERATE/STOP Microprocessor ControlCool Operation Auto Change Over ··· Auto Mode OperationDRY Operation Heat OperationOutdoor Unit MXZ series Auto Vane OperationHorizontal vane COOL/DRY Heat Vertical vaneSee Control Operation Area SettingSee Sensor Daytime Operation and operating range Plasma OperationTimer Operation Clean OperationProgram Timer Emergency Operation switch E.O.SW Minute Time Delay OperationEMERGENCY/TEST Operation Troubleshooting OFF Failure Mode Recall FunctionPlasma operation check Flow chart of Plasma operation failure mode recall functionPlasma operation failure mode table Indoor unit failure mode tableStart Instruction of TroubleshootingAn abnormality other than above mentioned is detected Troubleshooting Check TablePlasma Trouble Criterion of Main Parts Power lamp flashes 3-time Indoor fan does not operate Troubleshooting FlowYes Check of indoor P.C. board and indoor fan motor How to check miswiring and serial signal error Check of installation of the horizontal vane Electromagnetic noise enters into TV sets or radios Indoor electronic control P.C. board Test Point Diagram and VoltageSW P.C. Board CN1 Removing the panel Photo Disassembly InstructionsPower monitor receiver Removing the electrical box Photo Removing the nozzle assembly PhotoRemoving the vertical vane motor unit Photo Removing the indoor fan motor and the line flow fan Photo Removing the horizontal vane motor PhotoSpecifications subject to change without notice