Toshiba RAS-10YAV-E, RAS-13YKV-E Check procedures, Procedure Check point Symptom Causes

Page 54

(3) Check procedures

Table 10-8-1

No.

Procedure

Check point (Symptom)

Causes

1

Shut off the power supply and

1. Is the fuse blown?

1. * Application of shock voltage.

remove the P.C. board assembly

* Overload by short-circuit of the

from the electronic parts base.

parts.

Remove the connecting cable from

the terminal block.

2

Remove the connector for the

Voltage check

1. * AC power cord is defective.

motor, and turn the power on.

1. Between

and

* Poor contact of the terminal plate.

TP1

TP2

If the OPERATION lamp flashes

(220–230–240V AC)

* Miss wiring of the power relay.

(0,5 sec. :ON, 0,5 sec. :OFF) when

2. Between

and pin 1 of CN04

TP2

2. Fuse is defective.

the power turning on, the checking

(220–230–240V AC)

3. Operation of the thermal fuse.

points described as 1-5 of right

3. Between

TP2

and pin 3 of CN04

4. * Capacitor (C01, C15) is defective.

column are not necessary to

(220–230–240V AC)

perform.

* Line filter (L01) is defective.

4. Between + and – of C02

* Resistor (R01) is defective.

(310 ~ 340V DC)

* Diode (DB01) is defective.

5. Between

35V

and

GND

5. IC01, IC02, T01 are defective.

6. Between

12V

and

GND

6. IC01, IC02, T01, F03 are defective.

7. Between

5 V

and

GND

7. IC01, IC02, T01, F02, Q29, IC03

are defective.

3

Make the operation status by

Voltage check

1. Breaking wire of the relay coil,

pushing once the START/STOP

1. Voltage of relay coil. (DC 12V)

defective relay driver. (IC31)

button, except the status of [ON

Between pin 10 of IC31 and

2. Poor contact of relay.

GND

TIMER].

Between pin 11 of IC31 and

GND

2. Between No. 1 and 2 of connecting

cable terminal block.

(220–230–240V AC)

4

Start the operation with the system

1. All indicators light for 3 sec.



Defective indicator, or poor

which the time of the restart delay

2. Indicators do not indicate normally



housing assembly. (CN13)

timer is shortened.

after approximate 3 sec.



5

Make the operation status by pressing

1. Compressor does not operate.

1. The temperature of the indoor heat

once the START/STOP button.

2. OPERATION lamp flashes.

exchanger is abnormally low.

1. The time of the restart delay timer

2. Poor contact of the heat exchanger

is shortened.

sensor. (The connector is

2. Cool operation

disconnected.) (CN01)

3. Air volume [AUTO]

3. Heat exchanger sensor, main P.C.

4. Make the setting temperature lower

board are defective.

4. Main P.C. board is defective.

enough than room temperature.

5. Continuous operation.

6

Turn the power on after connecting

1. The voltage of DC 35V is not

1. Indoor fan motor is defective.

the motor connector.

measured between the red and

(Protecting operation on the P.C.

Start the operation with the following

black of the motor terminals.

board.)

condition.

2. Motor does not rotate.

2. Poor contact of the motor

1. Operation [Cooling]

(The key operation is accepted.)

connector.

2. Airflow [High fan]

3. The motor rotates, but it vibrates too

3. P.C. board is defective.

3. Continuous operation

much.

– 54 –

Image 54

Contents AIR-CONDITIONER Contents Specifications SpecificationsRAS-10YKV-E/RAS-10YAV-E RAS-13YKV-E/RAS-13YAV-E RAS-13YKV-ECooling Heating Operation Characteristic CurveCapacity Variation Ratio According to Temperature CoolingRefrigerant R410A Safety During Installation/ServicingRefrigerant Piping Installation Piping Materials and Joints UsedOuter diameter mm R410A R22 Processing of Piping Materials1 Thicknesses of annealed copper pipes Thickness mm Nominal diameter5 Flare and flare nut dimensions for R410A 3 Dimensions related to flare processing for R410A Outer4 Dimensions related to flare processing for R22 Outer Outer Thickness Dimension mmNm kgfcm Wrenches available on the marketRequired Tools R410A air conditioner Conventional air InstallationTools General tools Conventional tools can be used1 Configuration of refrigerant charging Recharging of RefrigerantBrazing of Pipes Materials for BrazingFlux Brazing Never use gas other than Nitrogen gasConstruction Views Indoor UnitRAS-10YKV-E, RAS-13YKV-E Outdoor Unit RAS-10YAV-E RAS-13YAV-EWiring Diagram 1 Simple check points for diagnosing faultsCheck items Diagnosis result RAS-10YAV-E, RAS-13YAV-E V. Pulse Modulating ValveSpecifications 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 Control Block Diagram Remote ControllerAssembly RASMCC808 P.C.B Operation Description Outline of Air Conditioner ControlCurrent Release Control Power Factor Improvement ControlCapacity Control 1 Compressor revolution rangeLouver Control Prevent-Freezing Control5. P. M. V. Pulse Modulating Valve Indoor Fan Control DC Fan MotorCOOL, DRY Description of Operation CircuitOutdoor Fan Control DC Fan Motor HeatOutdoor temperature release control Prevent-freezing controlCurrent release control Rps Louver control5 Setting of air flow ECONO. operation controlStarting and in stability Heating OperationBasic control Cold draft preventing controlDefrost control Temporary Auto Operation Temporary OperationAutomatic Operation Temporary Cooling OperationHow to Set the Auto Restart Auto Restart FunctionOperation Motion How to Cancel the Auto Restart Case of Power Failure during the Timer OperationName of Indications on Remote Controller Remote ControllerParts Name of Remote Controller START/STOP buttonInstallation Procedure Safety CautionsRemark per EMC Directive 89/336/EEC Optional Installation Parts Indoor UnitElectrical Work Outdoor Unit Refrigerant Piping ConnectionConfirmation of Power Voltage HOW to Diagnose the TroubleConfirmation of Power Supply First ConfirmationPrimary Judgment Operation Which is not a Trouble Program OperationOperation of air conditioner Description Judgment by Flashing LED of Indoor Unit Check Block display Description for self-diagnosis CodeSelf-Diagnosis Self-Diagnosis by Remote Controller Check CodeOperation Control by Rated Frequency in Service Mode ButtonBlock distinction Check outdoor heat exchanger temp Confirmation procedure Judgment of Trouble by Every SymptomIndoor Unit Including Remote Controller Power is not turned on Does not operate entirelyOnly the indoor fan does not operate YESCause 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 Code 1C Miswiring in indoor/outdoor units and 1E Check procedureHow to Diagnose Trouble in Outdoor Unit Summarized Inner Diagnosis of Inverter AssemblyDiagnosis/Process flowchart Contents Summary Operating precautions How to Check Simply the Main PartsHow to Check the P.C. Board Indoor Unit Inspection proceduresCheck procedures Procedure Check point Symptom CausesSensor characteristic table 10-8-2. P.C. Board LayoutBottom View Outdoor Unit Part name Checking procedureIndoor Unit Other Parts Position Resistance valueChecking Method for Each Part Case that product is goodHow to Simply Judge Whether Outdoor Fan Motor is Good or Bad Symptom11-1 Indoor Unit HOW to Replace the Main PartsPart name Procedure Remarks To assemble the front panelRemoving Louver motor Microcomputer Board layoutNo. Part name Procedure Remarks DetachmentAttachment Bundled Be careful to check the inverter becauseHigh-voltage circuit is incorporated in it PartLead wires Propeller Flange nut is loosened by turning clockwise Check that coil at B room side Red Pulse modulating valve has a roomSide and B room side. After mounting it Perform work on a corrugated cardboardPart name Procedure Remarks Parts name Qty 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