Toshiba RAS-13YAV-E Check Code 1C Miswiring in indoor/outdoor units and 1E, Check procedure

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10-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E

<Check procedure>

1C				1E
Gas leakage,				Discharge temp. error,
disconnection of TS/TC				gas leakage
sensors (Check code 02, 1C)				(Check code 03, 1E)

Valve drive check

Operation

Check Item

Considerable main cause

Measures

Item by symptom

Is coil of the pulse modulation valve		NO
(P.M.V.) correctly set?
	YES
	YES

NO

Is connector of coil connected to inverter?

YES

Is positioning sound of valve (sound hitting to stopper) heard from valve when the air conditioner starts the operation after turning off power of the air conditioner once?

NOTE :

After all the operations stopped by the remote controller, the power keeps

being supplied to outdoor unit for approx. 3 minutes. If operating the air NO

conditioner by remote controller again just after all the operations stopped by the remote controller, positioning of the valve is not performed when outdoor unit

is activated because supplying power to the outdoor unit is not interrupted. After positioning of the valve, activate the compressor and the outdoor fan. It takes approx. 7 seconds for positioning of the valve, and sound ticktack (hitting sound to stopper) is heard for approx. 0.5 seconds at least of that period. As the sound is low, check sound by using screwdriver, etc.

YES

Set it correctly.

Set it correctly.

Replace coil valve.

	Are temp. sensors of indoor/outdoor units correctly set to the holder?
	NOTE :		NO
	The temperature sensors which are used to control electronic control valve		NO

	include indoor heat exchanger sensor (TC), outdoor heat exchanger temp.
	sensor (TE), and outdoor suction temp. sensor (TS).
		YES
		YES

Set it correctly.

Gas amount check and valve clogging check

Remove TC sensor connector from the P.C. board in indoor unit.(Remove connector from the P.C. board.)

Operate the air conditioner in COOL mode by TEMP button (“Pi” sound is heard if keeping pushed for 10 seconds.). The operation enters temporary operation mode which fixes opening degree of P.M.V. and No. of revolution of compressor. Check condensation at outlet of P.M.V., and then check operating pressure from the service port.

	Existence of condensation at outlet of P.M.V.	YES
	If there is condensation at outlet (1/4 inch=Ø6,35mm valve side),	YES

	the valve is clogged.

Replace valve.

Check the operating pressure from service port, and add gas if pressure is low.

Add gas.

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Contents AIR-CONDITIONER Contents Specifications SpecificationsRAS-10YKV-E/RAS-10YAV-E RAS-13YKV-E RAS-13YKV-E/RAS-13YAV-ECooling Operation Characteristic CurveCapacity Variation Ratio According to Temperature Cooling HeatingPiping Materials and Joints Used Safety During Installation/ServicingRefrigerant Piping Installation Refrigerant R410ANominal diameter Processing of Piping Materials1 Thicknesses of annealed copper pipes Thickness mm Outer diameter mm R410A R22Outer Thickness Dimension mm 3 Dimensions related to flare processing for R410A Outer4 Dimensions related to flare processing for R22 Outer 5 Flare and flare nut dimensions for R410AWrenches available on the market Nm kgfcmGeneral tools Conventional tools can be used R410A air conditioner Conventional air InstallationTools Required ToolsRecharging of Refrigerant 1 Configuration of refrigerant chargingBrazing of Pipes Materials for BrazingFlux Never use gas other than Nitrogen gas BrazingConstruction Views Indoor UnitRAS-10YKV-E, RAS-13YKV-E RAS-10YAV-E RAS-13YAV-E Outdoor UnitWiring Diagram 1 Simple check points for diagnosing faultsCheck items Diagnosis result V. Pulse Modulating Valve RAS-10YAV-E, RAS-13YAV-ESpecifications of Electrical Parts Parts name Type SpecificationsParts name Model name Rating Refrigerant Cycle Diagram Refrigerant Cycle DiagramRAS-10YKV-E/RAS-10YAV-E RAS-13YKV-E/RAS-13YAV-E Operation Data CoolingHeating Remote Controller Control Block DiagramAssembly RASMCC808 P.C.B Outline of Air Conditioner Control Operation Description1 Compressor revolution range Power Factor Improvement ControlCapacity Control Current Release ControlIndoor Fan Control DC Fan Motor Prevent-Freezing Control5. P. M. V. Pulse Modulating Valve Louver ControlHeat Description of Operation CircuitOutdoor Fan Control DC Fan Motor COOL, DRYOutdoor temperature release control Prevent-freezing controlCurrent release control Louver control RpsECONO. operation control 5 Setting of air flowCold draft preventing control Heating OperationBasic control Starting and in stabilityDefrost control Temporary Cooling Operation Temporary OperationAutomatic Operation Temporary Auto OperationHow to Set the Auto Restart Auto Restart FunctionOperation Motion Case of Power Failure during the Timer Operation How to Cancel the Auto RestartSTART/STOP button Remote ControllerParts Name of Remote Controller Name of Indications on Remote ControllerInstallation Procedure Safety CautionsRemark per EMC Directive 89/336/EEC Indoor Unit Optional Installation PartsElectrical Work Refrigerant Piping Connection Outdoor UnitFirst Confirmation HOW to Diagnose the TroubleConfirmation of Power Supply Confirmation of Power VoltagePrimary Judgment Operation Which is not a Trouble Program OperationOperation of air conditioner Description Check Block display Description for self-diagnosis Code Judgment by Flashing LED of Indoor UnitButton Self-Diagnosis by Remote Controller Check CodeOperation Control by Rated Frequency in Service Mode Self-DiagnosisBlock distinction Check outdoor heat exchanger temp Power is not turned on Does not operate entirely Judgment of Trouble by Every SymptomIndoor Unit Including Remote Controller Confirmation procedureYES Only the indoor fan does not operateCause How to examine whether remote controller is good or bad Wiring Failure Interconnecting and Serial Signal Wire Check procedure Select phenomena described belowOutdoor unit does not operate Check procedure Check Code 1C Miswiring in indoor/outdoor units and 1EHow to Diagnose Trouble in Outdoor Unit Summarized Inner Diagnosis of Inverter AssemblyDiagnosis/Process flowchart Contents Summary Inspection procedures How to Check Simply the Main PartsHow to Check the P.C. Board Indoor Unit Operating precautionsProcedure Check point Symptom Causes Check proceduresSensor characteristic table 10-8-2. P.C. Board LayoutBottom View Position Resistance value Part name Checking procedureIndoor Unit Other Parts Outdoor UnitCase that product is good Checking Method for Each PartSymptom How to Simply Judge Whether Outdoor Fan Motor is Good or BadTo assemble the front panel HOW to Replace the Main PartsPart name Procedure Remarks 11-1 Indoor UnitRemoving Louver motor Board layout MicrocomputerNo. Part name Procedure Remarks DetachmentAttachment Part Be careful to check the inverter becauseHigh-voltage circuit is incorporated in it BundledLead wires Propeller Flange nut is loosened by turning clockwise Perform work on a corrugated cardboard Pulse modulating valve has a roomSide and B room side. After mounting it Check that coil at B room side RedParts name Qty Remarks Part name Procedure RemarksMCC-808 Exploded Views and Parts List Part DescriptionLocation 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