Toshiba RAS-13UAV-E2, RAS-13UKV-E2 How to Diagnose Trouble in Outdoor Unit, AGE on P.C. board

Page 66

FILE NO. SVM-03008

10-7. How to Diagnose Trouble in Outdoor Unit

10-7-1. Summarized inner diagnosis of inverter assembly

Table 10-7-1

Diagnosis/Process flowchart

Item

Contents

Summary

Preparation

Turn “OFF” the power

Remove

breaker, and remove 3P

connector of

compressor.

connector which connects

inverter and compressor.

NG

Check

•

Check whether 25 A fuse

If fuse was blown,

Check 15 A fuse

on the control board

be sure to check the

(Part No.F01).

assembly is blown or not.

electrolytic capacitor

OK

(F01)

and diode block. (DB01)

Replace fuse.

Check

•

Connect discharge

resistance (approx.

Check

100Ω 40W) or soldering

iron (plug) between +, –

electrolytic

terminals of the electrolytic

capacitor,

capacitor (500∝ F)

diode block

(DB01), etc.

of C14 (with printed

CAUTION HIGH VOLT-

AGE) on P.C. board.

Discharging position

Plug of

Check

(Discharging period

soldering

terminal voltage

NG

10 seconds or more)

iron

of electrolytic

capacitor.

Check

OK

electrolytic

capacitor,

diode

(DB01), etc.

Operation

Turn on power breaker, and

Does outdoor

NO

operate the air conditioner in

COOL mode by short-circuit

fan rotate?

of the timer.

YES

Measurement

Measure terminal voltage of

Does LED on control

YES

electrolytic capacity.

OK if 500∝ F →

board flash or go on?

500∝ F: 400WV x 3

NO

DC280 to 380 V

Check

After operation, turn off the

Remove CN300 by pushing

Remove connector

power breaker after 2

the part an arrow because

CN300 of outdoor

Stop

minutes 20 seconds passed,

CN01 is a connector with

NG fan motor, and using

and discharge the electrolytic

lock.

a tester, check

resistance value

capacity by soldering iron.

between every phase

Check voltage between

at motor side

motor phases.

OK

Check

•

Is not winding

Measurement

between 1-2, 2-3, or

Replace

1-3opened or

short-circuited?

outdoor

•

Is not frame grounded with

fan motor.

1, 2 or 3?

→

Resistance between

A

B

C

phases should be approx.

55 to 77Ω .

→

Should be 10MΩ

or

more.

– 65 –

Image 66

Contents AIR Conditioner Contents HOW to Replace the Main Parts Specifications SpecificationsOperation Characteristic Curve Capacity Variation Ratio According to TemperatureRefrigerant R410A Safety During Installation/ServicingRefrigerant Piping Installation Piping materials and joints usedOuter diameter mm R410A R22 1 Thicknesses of annealed copper pipesThickness mm Processing of piping materialsWidth Flare tool for R410A Conventional flare toolClutch type Wing nut type Diameter·m kgf·cm ·m kgf·mTools Required toolsGeneral tools Conventional tools can be used 1 Configuration of refrigerant charging Recharging of RefrigerantBrazing of Pipes Activated flux Characteristics required for fluxTypes of flux Noncorrosive flux BrazingIndoor Unit 215Outdoor Unit Cover PVWiring Diagram 1 Simple Check for Failure DiagnosisCheck Item Diagnosis Result BRW Parts name Specification of Electrical PartsSpecifications RatingRefrigerant Cycle Diagram Refrigerant Cycle DiagramOperation Data Control Block Diagram RaysOutdoor Unit Inverter Assembly MCC813P.C.BOperation Description Outlined of Air Conditioner Control1 Compressor revolution range Operation Model Power factor improvement controlCapacity control Revolution rpsLouver control Prevent-freezing control5. P.M.V. Pulse Modulating Valve Indoor fan control DC fan motorOutdoor fan control DC fan motor Model nameCompressor revolution rps From Description of Operation Circuit Cooling capacity controlLimit for maximum compressor motor speed By indoor fan speedBasic control Heating operationHigh-temp. release control Starting and in stability StabilityHeating capacity control Defrost controlAutomatic operation TimeTemporary auto operation Temporary OperationTemporary button Control Temporary cooling operationWhen the unit is in operation Operation How to set auto restart functionWhen the unit is on standby Not operating Operation Auto Restart FunctionFilter Check Lamp Remote Control and its Functions Timer and clock time display Mode displayTemperature display Hi-POWER displayFile NO. SVM-03008 Installation Procedure Safety CautionsTo Disconnect the Appliance from the Main Power Supply File NO. SVM-03008 Installation Diagram of Indoor and Outdoor Units AttachOptional installation parts Part Parts name ’ty Code Fixing bolt arrangement of outdoor unitName Accessory and installation partsOthers OptionNew tools for R410A Applicable to R22 model Changes Mounting the installation plate Installation placeRemote controller Cutting a holeWhen the installation plate is directly mounted on the wall Electrical workHow to remove the Drains Cap Die-cutting Front panel slitChanging drain hose Left-hand connection with piping How to fix the Drains CapCase of right or left piping Case of bottom right or bottom left pipingIndoor unit fixing Drainage Run the drain hose sloped downwardsR410A Conventional Copper pipe Tool used Refrigerant piping connection FlaringProjection margin in flaring a Unit mm Copper pipe Tightening connectionShaping pipes Using a vacuum pumpOuter dia Tightening torque Copper pipe EvacuatingPacked valve handling precautions Wiring connectionStripping length of connection cable Gas leak test Auto restart settingHow to set the auto restart Test operationHOW to Diagnose the Trouble First ConfirmationPrimary Judgment Operation which is not a trouble Program operationOperation of air conditioner Description Indoorindication Judgment by Flashing LED of Indoor UnitSelf-Diagnosis by Remote Control Check Code How to use remote control in service modeCause of operation Short circuit. Replace Judgment of Trouble by Every Symptom Check ItemTurn on power supply Only indoor fan motor does not operate Primary check YESInspection procedure Troubleshooting for remote control Pipe clogging Check Code 1C Miswiring in indoor/outdoor units and 1E Check procedureHow to Diagnose Trouble in Outdoor Unit AGE on P.C. boardInspection procedures How to Check Simply the Main PartsDiagnosis/Process flowchart Contents Summary Main P.C. board partCheck procedures Procedure Check points Symptom Causes OPERATION, TIMER, PRE. DEFSensor characteristic table 10-8-2. P.C. board layoutBottom View Indoor unit Other parts Part name Checking procedure Outdoor unit Part name Checking procedureChecking Method for Each Part Part name Checking procedure Diode check Igbt checkSymptom CauseHOW to Replace the Main Parts Part name Procedures RemarksFigure below For position of the fan motor connector Microcomputer Detachment Requirement Connector is one Assembly to other parts Fan motor Perform work of item 1 of 1 Set take-out part of the lead wire of coil to Part name Board layout MCC-813 Exploded Views and Parts List Indoor Unit E-Parts AssyFront Panel Assy Cabinet, Front, Assy Outdoor Unit E-Parts Assy Toshiba Carrier Corporation

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