Toshiba RAS-10SAX, RAS-10SA-E service manual Microcomputer RAS-10SK-E, RAS-10SKX

Page 50

10-2. Microcomputer (RAS-10SK-E, RAS-10SKX)

No.

Part name

 

Procedure

Remarks

 

 

 

 

•

Common

1) Turn the power supply off to stop the operation of

Replace the thermal fuse, terminal

 

procedure

 

air-conditioner, and disconnect the power cord from

block, power cord, microcomputer

 

 

 

the AC supply.

ass’y and the power supply PC

 

 

2)

Remove the front panel.

board ass’y.

 

 

 

• Remove the two fixing screws. (φ4 x 14 )

 

 

 

3)

Remove the electrical part base.

 

 

 

 

 

‚

Thermal fuse

1) Perform the process • above.

 

 

replacement

2) Remove terminal cover (Up), (Down).

 

 

 

3)

Disconnect the terminal blocks connected with the

 

 

 

 

connecting cable, and the power cord from base E-

 

 

 

 

parts by removing the screws.

 

 

 

4)

Remove the thermal fuse (77°C) from base E-parts.

 

 

 

 

 

 

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Page 49 Page 51
Contents R C O Contents Primary Judgement of Trouble Sources Troubleshooting FlowchartsWhat to be Prechecked First Specifications RAS-10SK-E/10SA-E RAS-10SKX/10SAX CoolingCondition JIS C9612-1994 Temperature Cooling Construction Views Indoor UnitOutdoor Unit RAS-10SA-E RAS-10SAXWiring Diagram Main P.C. BoardSpecifications of Electrical Parts Parts name Type SpecificationsRefrigerant Cycle Diagram RAS-10SK-E / RAS-10SA-E RAS-10SKX / RAS-10SAXMICRO-COMPUTER Block Diagram AUTO, COOL, DRY, FAN onlyCool Operation Operation DescriptionsFAN only Operation M3/hDRY Operation Louver ControlAuto Operation Temporary AutoCooling ECONO. ModeLow-Temperature Limit Control Cooling Operation How to Set the Auto Restart Auto Restart FunctionHow to Cancel the Auto Restart Case of Power Failure during the Timer OperationInstallation Procedure Safety Cautions For general public useUK Plugs and Sockets etc Safety Regulations SI Number Installation Diagram of Indoor and Outdoor Units AttachOptional Parts InstallationInstallation Parts Remote control Installation placeCutting a Hole and Mounting Installation Plate Mounting the installation plateWhen the installation plate is directly mounted on the wall Electrical WorkHow to open the screw cap Wiring ConnectionHow to remove the front cabinet Taking out the power cordStripping length of connecting cable How to install the front cabinet on the indoor unitCase of downward piping Piping and Drain Hose InstallationCase of rightward piping Left-hand connection with pipingIndoor Unit Installation DrainageStrong wind Flaring Refrigerant Piping ConnectionVacuum Pumping Tightening connectionPacked Valve Handling Precautions A5 mm hexagon wrench is requiredOthers Auto Restart SettingHow to set the Auto Restart Gas Leak TestWhat to be Prechecked First Troubleshooting ChartPower Supply Voltage Incorrect Cable Connection between Indoor and Outdoor UnitsMisleading but Good Operations Program Controlled Operation Operation of air-conditioner DescriptionBlock display Primary Judgement of Trouble SourcesRole of Indoor Unit Controller Self-diagnosis with remote control Selecting ordinary modeSelf-diagnosis by check codes Operating key Indication after operationCondition Code Status Preliminary checks Troubleshooting FlowchartsPower can not be Turned on No Operation at All Outdoor Unit does not Operate Power can not be Turned on after Replacing Indoor PC BoardChecking Procedure Only Compressor does not Operate Only Outdoor Fan does not Operate Check procedure Only the Indoor Fan does not OperateThere is no beep from Inspection procedures How to Check the PC BoardOperating precautions Main PC board partProcedure Check Point Symptom Causes PC Board Layout Top View Bottom ViewHow to Reduce the Operation Time of the Anti-Restart Timer SensorPart Replacement Indoor Unit RAS-10SK-E, RAS-10SKXPart name Procedure Remarks Microcomputer RAS-10SK-E, RAS-10SKX Outdoor Unit RAS-10SA-E, RAS-10SAX OFF Exploded Views and Parts List Part DescriptionIndoor Unit Capillary Tube
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