Toshiba RAS-13YAV-E HOW to Replace the Main Parts, Indoor Unit, Part name Procedure Remarks

Page 59

11. HOW TO REPLACE THE MAIN PARTS

11-1.

Indoor Unit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No.

Part name

 

Procedure

 

 

Remarks

 

 

 

 

 

 

 

 

 

 

 

Q

Front panel

1)

After stopping the operation of the air conditioner,

 

 

 

 

 

 

 

 

 

 

be sure to turn off the circuit breaker or disconnect

 

 

 

 

 

 

 

 

 

 

the power plug from the AC wall socket.

 

 

 

 

 

 

 

 

 

2)

Open the screw caps and remove the two screws

 

 

 

 

 

 

 

 

 

 

fixing the front panel.

 

 

 

 

 

5

 

 

3)

5

 

 

 

 

 

 

 

Close the screw caps as they were.

 

 

 

 

 

 

 

 

 

4)

Open the horizontal louver right below by your

 

 

 

 

 

 

 

 

 

 

finger.

 

 

 

 

 

 

 

 

 

5)

Open the lower side of front panel until it touches

3 2

4

2 3

 

 

 

the horizontal louver, and remove it from the indoor

 

 

 

 

 

 

 

 

 

 

unit by turning it.

 

 

 

 

 

 

 

 

 

 

<To assemble the front panel>

 

 

 

 

 

 

 

 

 

1)

Fix the two screws to secure the front panel.

 

 

 

 

 

 

 

 

 

2)

Close the screw caps as they were.

3

 

3

 

3

 

 

3)

Press four places where are the center, right end,

 

 

 

 

 

 

 

 

 

 

left end and lower portions of the air outlet.

 

 

 

 

 

 

 

 

 

4)

Check the gap between the front panel and the

 

 

3

 

 

 

 

 

 

main unit.

 

 

 

 

 

 

 

 

 

 

If cooling or drying operation is performed without

 

 

 

 

 

 

 

 

 

 

pressing the center of the air outlet, the surface of

 

 

 

 

 

 

 

 

 

 

the front panel may be covered with frost and have

 

 

 

 

 

 

 

 

 

 

a waterdrop.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

Electrical part

1)

Perform the process Q above.

 

 

Screw

Upper nail

 

assembly

2)

Remove the screw securing the shield metal plate.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3)

Remove the electrical part cover by pressing the

Drain

 

 

 

 

 

 

 

 

nail located on upper portion of the electrical part

guide

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

cover.

Screw

 

 

 

 

 

 

 

4)

Remove the drain guide.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5)

Remove the screw securing to the end plate of the

 

 

 

 

 

Electrical

 

 

 

heat exchanger.

 

 

 

 

 

part cover

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6)

Remove the connector (5p) for the fan motor and

 

 

 

 

 

 

 

 

 

 

 

Lower fixing nail

 

 

 

the connector (6p) for the louver motor from the

 

 

 

 

 

 

 

 

 

 

Screw

 

 

 

microcomputer assembly.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7)After unhooking the electrical part base by press- ing the fixing nail located on its lower portion, draw the electrical part base out toward you to remove it

 

 

 

from the main unit.

 

 

 

8)

Pull the TC sensor out from the holder of the heat

 

 

 

 

exchanger.

TC

 

 

9)

Dress the connecting cable securely as shown in

 

 

sensor

 

 

 

the right illustration.

 

 

 

When assembling dress the connecting

 

 

 

(Improper dressing will cause water leakage.)

 

 

 

 

cable in loop and put it into the drain-pan.

 

 

 

 

S

Drain-pan

1) Perform the process R above.

 

 

assembly

2)

Remove the drain-pan by pressing the four hooks

 

 

 

 

 

 

 

downwards. (Keep it with the drain hose.)

 

 

 

 

 

Hooks

– 59 –

Image 59
Contents AIR-CONDITIONER Contents RAS-10YKV-E/RAS-10YAV-E SpecificationsSpecifications 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 chargingFlux Brazing of PipesMaterials for Brazing Never use gas other than Nitrogen gas BrazingRAS-10YKV-E, RAS-13YKV-E Construction ViewsIndoor Unit RAS-10YAV-E RAS-13YAV-E Outdoor UnitCheck items Diagnosis result Wiring Diagram1 Simple check points for diagnosing faults V. Pulse Modulating Valve RAS-10YAV-E, RAS-13YAV-EParts name Model name Rating Specifications of Electrical PartsParts name Type Specifications RAS-10YKV-E/RAS-10YAV-E RAS-13YKV-E/RAS-13YAV-E Refrigerant Cycle DiagramRefrigerant Cycle Diagram Heating Operation DataCooling Remote Controller Control Block DiagramMCC808 P.C.B AssemblyRAS 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, DRYCurrent release control Outdoor temperature release controlPrevent-freezing 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 OperationOperation Motion How to Set the Auto RestartAuto Restart Function 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 ControllerRemark per EMC Directive 89/336/EEC Installation ProcedureSafety Cautions Indoor Unit Optional Installation PartsElectrical Work Refrigerant Piping Connection Outdoor UnitFirst Confirmation HOW to Diagnose the TroubleConfirmation of Power Supply Confirmation of Power VoltageOperation of air conditioner Description Primary JudgmentOperation Which is not a Trouble Program Operation 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 Outdoor unit does not operate Wiring Failure Interconnecting and Serial Signal WireCheck procedure Select phenomena described below Check procedure Check Code 1C Miswiring in indoor/outdoor units and 1EDiagnosis/Process flowchart Contents Summary How to Diagnose Trouble in Outdoor UnitSummarized Inner Diagnosis of Inverter Assembly Inspection procedures How to Check Simply the Main PartsHow to Check the P.C. Board Indoor Unit Operating precautionsProcedure Check point Symptom Causes Check proceduresBottom View Sensor characteristic table10-8-2. P.C. Board Layout 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 MicrocomputerAttachment No. Part name Procedure RemarksDetachment 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 Location Exploded Views and Parts ListPart Description 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