Toshiba RAS-10YKV-E, RAS-13YKV-E, RAS-10YAV-E, RAS-13YAV-E service manual Microcomputer, Board layout

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11-2. Microcomputer

No.	Part name		Procedure	Remarks

Q	Common	1)	Turn the power supply off to stop the operation of	Replace the thermal fuse, terminal
	procedure		air-conditioner.	block, microcomputer ass’y and the
		2)	Remove the front panel.	P.C. board ass’y.
		2)	Remove the front panel.
		• Remove the two fixing screws. (Ø4 x 14 l)
		3)	Remove the electrical part base.

<P.C. board layout>

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Contents AIR-CONDITIONER Contents Specifications SpecificationsRAS-10YKV-E/RAS-10YAV-E RAS-13YKV-E RAS-13YKV-E/RAS-13YAV-ECapacity Variation Ratio According to Temperature Operation Characteristic CurveCooling Heating CoolingRefrigerant Piping Installation Safety During Installation/ServicingRefrigerant R410A Piping Materials and Joints Used1 Thicknesses of annealed copper pipes Thickness mm Processing of Piping MaterialsOuter diameter mm R410A R22 Nominal diameter4 Dimensions related to flare processing for R22 Outer 3 Dimensions related to flare processing for R410A Outer5 Flare and flare nut dimensions for R410A Outer Thickness Dimension mmWrenches available on the market Nm kgfcmTools R410A air conditioner Conventional air InstallationRequired Tools General tools Conventional tools can be usedRecharging of Refrigerant 1 Configuration of refrigerant chargingMaterials for Brazing Brazing of PipesFlux Never use gas other than Nitrogen gas BrazingIndoor Unit Construction ViewsRAS-10YKV-E, RAS-13YKV-E RAS-10YAV-E RAS-13YAV-E Outdoor Unit1 Simple check points for diagnosing faults Wiring DiagramCheck items Diagnosis result V. Pulse Modulating Valve RAS-10YAV-E, RAS-13YAV-EParts name Type Specifications Specifications of Electrical PartsParts name Model name Rating Refrigerant Cycle Diagram Refrigerant Cycle DiagramRAS-10YKV-E/RAS-10YAV-E RAS-13YKV-E/RAS-13YAV-E Cooling Operation DataHeating Remote Controller Control Block DiagramRAS AssemblyMCC808 P.C.B Outline of Air Conditioner Control Operation DescriptionCapacity Control Power Factor Improvement ControlCurrent Release Control 1 Compressor revolution range5. P. M. V. Pulse Modulating Valve Prevent-Freezing ControlLouver Control Indoor Fan Control DC Fan MotorOutdoor Fan Control DC Fan Motor Description of Operation CircuitCOOL, DRY HeatPrevent-freezing control Outdoor temperature release controlCurrent release control Louver control RpsECONO. operation control 5 Setting of air flowBasic control Heating OperationStarting and in stability Cold draft preventing controlDefrost control Automatic Operation Temporary OperationTemporary Auto Operation Temporary Cooling OperationAuto Restart Function How to Set the Auto RestartOperation Motion Case of Power Failure during the Timer Operation How to Cancel the Auto RestartParts Name of Remote Controller Remote ControllerName of Indications on Remote Controller START/STOP buttonSafety Cautions Installation ProcedureRemark per EMC Directive 89/336/EEC Indoor Unit Optional Installation PartsElectrical Work Refrigerant Piping Connection Outdoor UnitConfirmation of Power Supply HOW to Diagnose the TroubleConfirmation of Power Voltage First ConfirmationOperation Which is not a Trouble Program Operation Primary JudgmentOperation of air conditioner Description Check Block display Description for self-diagnosis Code Judgment by Flashing LED of Indoor UnitOperation Control by Rated Frequency in Service Mode Self-Diagnosis by Remote Controller Check CodeSelf-Diagnosis ButtonBlock distinction Check outdoor heat exchanger temp Indoor Unit Including Remote Controller Judgment of Trouble by Every SymptomConfirmation procedure Power is not turned on Does not operate entirelyYES Only the indoor fan does not operateCause How to examine whether remote controller is good or bad Check procedure Select phenomena described below Wiring Failure Interconnecting and Serial Signal WireOutdoor unit does not operate Check procedure Check Code 1C Miswiring in indoor/outdoor units and 1ESummarized Inner Diagnosis of Inverter Assembly How to Diagnose Trouble in Outdoor UnitDiagnosis/Process flowchart Contents Summary How to Check the P.C. Board Indoor Unit How to Check Simply the Main PartsOperating precautions Inspection proceduresProcedure Check point Symptom Causes Check procedures10-8-2. P.C. Board Layout Sensor characteristic tableBottom View Indoor Unit Other Parts Part name Checking procedureOutdoor Unit Position Resistance valueCase that product is good Checking Method for Each PartSymptom How to Simply Judge Whether Outdoor Fan Motor is Good or BadPart name Procedure Remarks HOW to Replace the Main Parts11-1 Indoor Unit To assemble the front panelRemoving Louver motor Board layout MicrocomputerDetachment No. Part name Procedure RemarksAttachment High-voltage circuit is incorporated in it Be careful to check the inverter becauseBundled PartLead wires Propeller Flange nut is loosened by turning clockwise Side and B room side. After mounting it Pulse modulating valve has a roomCheck that coil at B room side Red Perform work on a corrugated cardboardParts name Qty Remarks Part name Procedure RemarksMCC-808 Part Description Exploded Views and Parts ListLocation Part Description 222 43T49023 Holder of Plate of EVA-SEAL 11, 13 12 24, 25 26, 27 12-3. P.C. Board Layout Toshiba Carrier Corporation Turn 208 10YKV-E 221 Cushion, Rubber Valve, 4-way To Sensor Ø6