Toshiba RAS-10SKX Self-diagnosis by check codes, Operating key Indication after operation

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<Self-diagnosis by check codes>

1)The self-diagnosis by the check codes is con- ducted under the block displays of item B-H in Table 9-2-1.

2)Remote control key operation under the ser- vice mode is conducted by ON/OFF or TEMP. The remote control display by each key op- eration is varied as shown below. Two digit number is displayed in a hexadecimal num- ber.

3)The self-diagnosis by the check codes is con- ducted with procedures shown below.

a)Enter the service mode and make sure the off timer display of the remote control shows

.

b)Operate the “ON/OFF” key and make sure the timer lamp on the display section is flashing (5 Hz).

c)At the same time, also make sure the op- eration lamp is also flashing. This shows that the protection circuit on the indoor PC board is working.

d)Operate the TEMP. key and make sure the remote control display shows and

flashing of the operation lamp. If the op- eration lamp is flashing, it shows the pro- tection circuits for connecting cable is work- ing or thermal fuse is blown.

e)In the same way, operate the TEMP. key so that the display is increased one by one to continue checks by the self-di- agnosis as shown in the next table. From

up to check operations of protection circuits for each block, and

to check operations of the typical protection circuits.

Table 9-2-3

Operating key

Indication after operation

ON/OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 is added to data before operation.

 

TEMP.

(Up)

 

 

 

(Example)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 is subtracted from data before operation.

 

TEMP.

(Down)

 

 

 

(Example)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10 is subtracted from data before operation.

“AUTO” LOUVER

 

 

 

 

(Example)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Data before operation is directly transferred.

“SET” LOUVER

 

 

 

 

(Example)

 

 

 

 

 

 

 

 

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Contents R C O Contents Troubleshooting Flowcharts What to be Prechecked FirstPrimary Judgement of Trouble Sources 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 onlyOperation Descriptions FAN only OperationCool Operation M3/hDRY Operation Louver ControlAuto Operation Temporary AutoECONO. Mode Low-Temperature Limit Control Cooling OperationCooling 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 AttachInstallation Installation PartsOptional Parts Installation place Cutting a Hole and Mounting Installation PlateRemote control Mounting the installation plateWhen the installation plate is directly mounted on the wall Electrical WorkWiring Connection How to remove the front cabinetHow to open the screw cap Taking out the power cordStripping length of connecting cable How to install the front cabinet on the indoor unitPiping and Drain Hose Installation Case of rightward pipingCase of downward piping Left-hand connection with pipingIndoor Unit Installation DrainageStrong wind Refrigerant Piping Connection Vacuum PumpingFlaring Tightening connectionPacked Valve Handling Precautions A5 mm hexagon wrench is requiredAuto Restart Setting How to set the Auto RestartOthers Gas Leak TestTroubleshooting Chart Power Supply VoltageWhat to be Prechecked First Incorrect Cable Connection between Indoor and Outdoor UnitsMisleading but Good Operations Program Controlled Operation Operation of air-conditioner DescriptionPrimary Judgement of Trouble Sources Role of Indoor Unit ControllerBlock display Self-diagnosis with remote control Selecting ordinary modeSelf-diagnosis by check codes Operating key Indication after operationCondition Code Status Troubleshooting Flowcharts Power can not be Turned on No Operation at AllPreliminary checks Power can not be Turned on after Replacing Indoor PC Board Checking ProcedureOutdoor Unit does not Operate Only Compressor does not Operate Only Outdoor Fan does not Operate Check procedure Only the Indoor Fan does not OperateThere is no beep from How to Check the PC Board Operating precautionsInspection procedures 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