Toshiba RAS-13UAV-E2, RAS-13UKV-E2 service manual Short circuit. Replace

Page 58

FILE NO. SVM-03008

Block distinction

 

Operation of diagnosis function

 

 

 

 

 

 

 

 

 

 

Judgment and action

Check

Block

Check

Cause of operation

Air conditioner

Remarks

 

 

 

code

code

status

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ondoor

 

Inverter over-current

All off

Displayed when

Even if trying operation again, all

 

P.C.

 

protective circuit operates.

 

error is detected.

operations stop immediately. :

 

board

 

(Short time)

 

 

Replace P.C. board.

 

 

 

 

 

 

 

 

 

 

 

Position-detect circuit error

All off

Displayed when

1.

Even if connecting lead wire of

 

 

 

or short-circuit between

 

error is detected.

 

compressor is removed, position-

 

 

 

windings of compressor

 

 

 

detect circuit error occurred.

 

 

 

 

 

 

 

: Replace P.C. board.

 

 

 

 

 

 

2. Measure resistance between

 

 

 

 

 

 

 

wires of compressor, and perform

 

 

 

 

 

 

 

short circuit. : Replace

 

 

 

 

 

 

 

compressor.

 

 

 

 

 

 

 

 

 

 

Current-detect circuit error

All off

Displayed when

Even if trying operation again, all

 

 

 

 

 

error is detected.

operations stop immediately. :

 

 

 

 

 

 

Replace P.C. board.

 

 

 

 

 

 

 

 

 

 

 

Being out of place,

All off

Displayed when

1.

Check outdoor temp. sensors

 

 

 

disconnection or short-

 

error is detected.

 

(TE, TS).

 

 

 

circuit of outdoor temp.

 

 

2.

Check P.C. board.

 

 

 

sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Disconnection or short-

All off

Displayed when

1. Check discharge temp. sensor (TD).

 

 

 

circuit of discharge temp.

 

error is detected.

2. Check P.C. board.

 

 

 

sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outdoor fan drive system

All off

Displayed when

Position-detect error, over-current

 

 

 

error

 

error is detected.

protective operation of outdoor fan

 

 

 

 

 

 

drive system, fan lock, etc. :

 

 

 

 

 

 

Replace P.C. board or fan motor.

 

 

 

 

 

 

 

 

 

Not

 

Outdoor heat exchanger

Operation

–––

1.

Check outdoor heat exchanger

 

displayed

 

temp. sensor error

continues.

 

 

temp. sensor (TE).

 

 

 

 

 

 

2.

Check P.C. board.

 

 

 

 

 

 

 

 

Ondoor

 

Compressor drive output

All off

Displayed when

When 20 seconds passed after

 

P.C.

 

error, Compressor error

 

error is detected.

startup, position-detect circuit error

 

board

 

(lock, missing, etc.),

 

 

occurred. : Replace compressor.

 

 

 

Break down

 

 

 

 

 

 

 

 

 

 

 

 

Others

 

Return serial signal has

Operation

Flashes when

1. Repeat Start and Stop with

 

(including

 

been sent when operation

continues.

trouble is

 

interval of approx. 10 to 40

 

compres-

 

started, but it is not sent

 

detected on

 

minutes. (Code is not displayed

 

sor)

 

from halfway.

 

return serial

 

during operation.)

 

 

 

(1) Compressor thermo.

 

signal, and

 

Supply gas. (Check also gas leak.)

 

 

 

operation

 

normal status

2.

Unit operates normally during

 

 

 

Gas shortage

 

when signal is

 

check.

 

 

 

Gas leak

 

reset.

 

If return serial signal does not

 

 

 

(2) Instantaneous power

 

 

 

stop between indoor terminal

 

 

 

failure

 

 

 

block, 2 and 3 replace inverter

 

 

 

 

 

 

 

P.C. board.

 

 

 

 

 

 

 

If signal stops between indoor

 

 

 

 

 

 

 

terminal block, 2 and 3 replace

 

 

 

 

 

 

 

indoor P.C. board.

 

 

 

 

 

 

 

 

 

 

 

Compressor does not

All off

Displayed when

1.

Trouble on compressor

 

 

 

rotate. (Current protective

 

error is detected.

2.

Trouble on wiring of compressor

 

 

 

circuit does not operate

 

 

 

(Missed phase)

 

 

 

when a specified time

 

 

 

 

 

 

 

passed after compressor

 

 

 

 

 

 

 

had been activated.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Discharge temp. exceeded

All off

Displayed when

1. Check discharge temp. sensor (TD).

 

 

 

117°C

 

error is detected.

2. Degassing

 

 

 

 

 

 

3. Trouble on P.M.V.

 

 

 

Break down of compressor

All off

Displayed when

1. Check power voltage. (220-240 V

 

 

 

 

 

error is detected.

 

+10%)

 

 

 

 

 

 

2.

Overload operation of

 

 

 

 

 

 

 

refrigeration cycle

 

 

 

 

 

 

 

Check installation condition

 

 

 

 

 

 

 

(Short-circuit of outdoor diffuser.)

 

 

 

Four-way valve inverse error

Operation

–––

1. Check 4-way valve operation.

 

 

 

(TC sensor value lowered

continues.

 

 

 

 

 

 

during heating operation.)

 

 

 

 

 

 

 

 

 

 

 

 

– 57 –

Page 57 Page 59
Image 58
Page 57 Page 59
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·mRequired tools 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 PV1 Simple Check for Failure Diagnosis Wiring DiagramCheck 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 motorModel name Outdoor fan control DC fan motorCompressor 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 Safety Cautions Installation ProcedureTo 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 workDie-cutting Front panel slit How to remove the Drains CapChanging 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 EvacuatingWiring connection Packed valve handling precautionsStripping length of connection cable Gas leak test Auto restart settingHow to set the auto restart Test operationHOW to Diagnose the Trouble First ConfirmationOperation which is not a trouble Program operation Primary JudgmentOperation 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. DEF10-8-2. P.C. board layout Sensor characteristic tableBottom 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

RAS-13UAV-E2, RAS-13UKV-E2 specifications

The Toshiba RAS-13UKV-E2 and RAS-13UAV-E2 air conditioning units represent a significant step forward in both comfort and energy efficiency. Designed for residential and light commercial use, these models are packed with features that cater to diverse climate control needs while adhering to modern standards of sustainability.

One of the standout features of both models is the implementation of inverter technology. This advanced system allows for more precise temperature control by adjusting the compressor speed based on the ambient temperature requirements. This not only enhances energy efficiency but also ensures a quieter operation compared to traditional air conditioning systems. As a result, users benefit from consistent comfort without the disruptive sounds often associated with cooling units.

The RAS-13UKV-E2 and RAS-13UAV-E2 also feature a high energy efficiency rating, which is crucial for reducing electricity bills. The Seasonal Energy Efficiency Ratio (SEER) is a vital measure of energy efficiency over an entire cooling season. Both units excel in this regard, making them an environmentally friendly choice. This is further supported by Toshiba's commitment to incorporating R32 refrigerant, known for its lower environmental impact compared to older refrigerants.

User convenience is enhanced with integrated smart controls. Both models are compatible with wireless remote control features, allowing for easy adjustments from a distance. This is complemented by programmable settings that let users schedule operation times, ensuring that the units run only when needed, which further optimizes energy consumption.

Design-wise, these air conditioners boast a sleek and modern appearance, making them a visually appealing addition to any room. They are constructed with durable materials that ensure longevity and reliability. Moreover, the filters are designed for easy maintenance, ensuring cleaner indoor air quality and prolonging the lifespan of the unit.

The Toshiba RAS-13UKV-E2 and RAS-13UAV-E2 units also come equipped with advanced air purification technologies. These features help to reduce airborne pollutants and allergens, contributing to a healthier indoor environment. With exceptional cooling and heating capabilities, easy installation, and advanced features, these models are designed to meet the modern user's needs for comfort, efficiency, and health. Overall, they represent an excellent investment in both cooling technology and eco-friendly practices.
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