Toshiba RAS-13UKV-E2, RAS-13UAV-E2 Operation Description, Outlined of Air Conditioner Control

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Operations followed to judgment of serial signal from indoor side.

FILE NO. SVM-03008

8. OPERATION DESCRIPTION

8-1. Outlined of Air Conditioner Control

This air conditioner is a capacity-variable type air conditioner, which uses DC motor for the indoor fan motor and the outdoor fan motor. And the capacity proportional control compressor which can change the motor speed in the range from 13 to 110 rps is mounted. The DC motor drive circuit is mounted to the indoor unit. The compressor and the inverter to control fan motor are mounted to the outdoor unit.

The entire air conditioner is mainly controlled by the indoor unit controller.

The indoor unit controller drives the indoor fan motor based upon command sent from the remote control, and transfers the operation command to the outdoor unit controller.

The outdoor unit controller receives operation command from the indoor unit side, and controls the outdoor fan and the pulse modulating valve. (P.M.V) Besides, detecting revolution position of the compressor motor, the outdoor unit controller controls speed of the compressor motor by controlling output voltage of the inverter and switching timing of the supply power (current transfer timing) so that motors drive according to the operation command. And then, the outdoor unit controller transfers reversely the operating status information of the outdoor unit to control the indoor unit controller.

As the compressor adopts four-pole brushless DC motor, the frequency of the supply power from inverter to compressor is two-times cycles of the actual number of revolution.

(1)Role of indoor unit controller

The indoor unit controller judges the operation commands from the remote controller and assumes the following functions.

•Judgment of suction air temperature of the indoor heat exchanger by using the indoor temp. sensor (TA sensor)

•Temperature setting of the indoor heat exchanger by using heat exchanger sensor (TC sensor) (Prevent-freezing control)

•Louver motor control

•Indoor fan motor operation control

•LED (Light Emitting Diode) display control

•Transferring of operation command signal (Serial signal) to the outdoor unit

•Reception of information of operation status (Serial signal including outside temp. data) to the outdoor unit and judgment/display of error

(2)Role of outdoor unit controller

Receiving the operation command signal (Serial signal) from the indoor controller, the outdoor unit performs its role.

• Compressor operation control

• Operation control of outdoor fan motor

•P.M.V. control

•Detection of inverter input current and current release operation

•Over-current detection and prevention operation to IGBT module (Compressor stop function)

•Compressor and outdoor fan stop function when serial signal is off (when the serial signal does not reach the board assembly of outdoor control by trouble of the signal system).

•Transferring of operation information (Serial signal) from outdoor unit to indoor unit

•Detection of outdoor temperature and operation revolution control

•Defrost control in heating operation (Temp. measurement by outdoor heat exchanger and control for 4-way valve and outdoor fan)

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Contents AIR Conditioner Contents HOW to Replace the Main Parts Specifications SpecificationsCapacity Variation Ratio According to Temperature Operation Characteristic CurvePiping materials and joints used Safety During Installation/ServicingRefrigerant Piping Installation Refrigerant R410AProcessing of piping materials 1 Thicknesses of annealed copper pipesThickness mm Outer diameter mm R410A R22Diameter Flare tool for R410A Conventional flare toolClutch type Wing nut type Width·m kgf·m ·m kgf·cmGeneral tools Conventional tools can be used ToolsRequired tools Recharging of Refrigerant 1 Configuration of refrigerant chargingBrazing of Pipes Brazing Characteristics required for fluxTypes of flux Noncorrosive flux Activated flux215 Indoor UnitCover PV Outdoor UnitCheck Item Diagnosis Result Wiring Diagram1 Simple Check for Failure Diagnosis BRW Rating Specification of Electrical PartsSpecifications Parts nameRefrigerant Cycle Diagram Refrigerant Cycle DiagramOperation Data Rays Control Block DiagramMCC813P.C.B Outdoor Unit Inverter AssemblyOutlined of Air Conditioner Control Operation DescriptionRevolution rps Power factor improvement controlCapacity control 1 Compressor revolution range Operation ModelIndoor fan control DC fan motor Prevent-freezing control5. P.M.V. Pulse Modulating Valve Louver controlCompressor revolution rps From Outdoor fan control DC fan motorModel name Cooling capacity control Description of Operation CircuitBy indoor fan speed Limit for maximum compressor motor speedHeating operation Basic controlDefrost control Starting and in stability StabilityHeating capacity control High-temp. release controlTime Automatic operationTemporary cooling operation Temporary OperationTemporary button Control Temporary auto operationAuto Restart Function How to set auto restart functionWhen the unit is on standby Not operating Operation When the unit is in operation OperationFilter Check Lamp Remote Control and its Functions Hi-POWER display Mode displayTemperature display Timer and clock time displayFile NO. SVM-03008 To Disconnect the Appliance from the Main Power Supply Installation ProcedureSafety Cautions File NO. SVM-03008 Attach Installation Diagram of Indoor and Outdoor UnitsFixing bolt arrangement of outdoor unit Optional installation parts Part Parts name ’ty CodeOption Accessory and installation partsOthers NameNew tools for R410A Applicable to R22 model Changes Cutting a hole Installation placeRemote controller Mounting the installation plateElectrical work When the installation plate is directly mounted on the wallChanging drain hose How to remove the Drains CapDie-cutting Front panel slit Case of bottom right or bottom left piping How to fix the Drains CapCase of right or left piping Left-hand connection with pipingDrainage Run the drain hose sloped downwards Indoor unit fixingCopper pipe Tightening connection Refrigerant piping connection FlaringProjection margin in flaring a Unit mm R410A Conventional Copper pipe Tool usedEvacuating Using a vacuum pumpOuter dia Tightening torque Copper pipe Shaping pipesStripping length of connection cable Packed valve handling precautionsWiring connection Test operation Auto restart settingHow to set the auto restart Gas leak testFirst Confirmation HOW to Diagnose the TroubleOperation of air conditioner Description Primary JudgmentOperation which is not a trouble Program operation Judgment by Flashing LED of Indoor Unit IndoorindicationHow to use remote control in service mode Self-Diagnosis by Remote Control Check CodeCause of operation Short circuit. Replace Check Item Judgment of Trouble by Every SymptomTurn on power supply YES Only indoor fan motor does not operate Primary checkInspection procedure Troubleshooting for remote control Pipe clogging Check procedure Check Code 1C Miswiring in indoor/outdoor units and 1EAGE on P.C. board How to Diagnose Trouble in Outdoor UnitMain P.C. board part How to Check Simply the Main PartsDiagnosis/Process flowchart Contents Summary Inspection proceduresOPERATION, TIMER, PRE. DEF Check procedures Procedure Check points Symptom CausesBottom View Sensor characteristic table10-8-2. P.C. board layout Outdoor unit Part name Checking procedure Indoor unit Other parts Part name Checking procedureDiode check Igbt check Checking Method for Each Part Part name Checking procedureCause SymptomPart name Procedures Remarks HOW to Replace the Main PartsFigure 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 Indoor Unit E-Parts Assy Exploded Views and Parts ListFront 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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