Toshiba RAS-B13SKVP-E Outline of Air Conditioner Control, Role of indoor unit controller

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9. OPERATION DESCRIPTION

9-1. Outline 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 11 to 118 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 controller, and transfers the operation command to the outdoor unit controller.

The outdoor unit controller receives operation com- mand from the indoor unit side, and controls the outdoor fan and the pulse motor valve. (P.M.V) Besides, detecting revolution position of the compres- sor 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)

•Judgment of the indoor heat exchanger temperature by using heat exchanger sensor (TC sensor) (Prevent-freezing control and super heat control, etc.)

•Judgment of inlet indoor heat exchanger tempera- ture by using heat exchanger sensor (TCJ sensor) (Super heat control etc.)

•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

•Air purifier operation control

2.Role of outdoor unit controller

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

• Compressor operation

Operations followed to

•

control

Operation control of

judgment of serial

 

outdoor fan motor

 

signal from indoor side.

•

P.M.V. control

•4-way valve 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 controller to indoor unit controller

•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)

3.Contents of operation command signal (Serial signal) from indoor unit controller to outdoor unit controller

The following three types of signals are sent from the indoor unit controller.

•Operation mode set on the remote controller

•Compressor revolution command signal defined by indoor temperature and set temperature (Correction along with variation of room tempera- ture and correction of indoor heat exchanger temperature are added.)

•Temperature of indoor heat exchanger

•For these signals ([Operation mode] and [Com- pressor revolution] indoor heat exchanger tem- perature), the outdoor unit controller monitors the input current to the inverter, and performs the followed operation within the range that current does not exceed the allowable value.

4.Contents of operation command signal (Serial signal) from outdoor unit controller to indoor unit controller

The following signals are sent from the outdoor unit controller.

•The current operation mode

•The current compressor revolution

•Outdoor temperature

•Existence of protective circuit operation

For transferring of these signals, the indoor unit controller monitors the contents of signals, and judges existence of trouble occurrence.

Contents of judgment are described below.

•Whether distinction of the current operation status meets to the operation command signal

•Whether protective circuit operates

When no signal is received from the outdoor unit controller, it is assumed as a trouble.

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Contents AIR-CONDITIONER Contents For general public use New Refrigerant Air Conditioner InstallationFor Reference Specifications SpecificationsRAS-10SKVP-ND RAS-13SKVP-ND RAS-16SKVP-ND Current Operation Characteristic CurveHeating CoolingCapacity ratio % 110 100 Capacity Variation Ratio According to TemperatureCooling HeatingCopper Pipes Safety During Installation/ServicingRefrigerant Piping Installation Piping Materials and Joints UsedFlare processing procedures and precautions Processing of Piping MaterialsJoints Diameter Flare tool for R410A Conventional flare toolClutch type Wing nut type Flare tool for R22 Conventional flare toolFlare Connecting Procedures and Precautions Nm kgfcmWrenches available on the market Tools Required ToolsGeneral tools Conventional tools can be used Recharging of Refrigerant 1 Configuration of refrigerant chargingBrazing of Pipes Materials for BrazingFlux Never use gas other than Nitrogen gas BrazingIndoor Unit Construction ViewsWH-H05JE Detailed B leg part Mounting dimensions of anchor boltOutdoor Unit Detailed a leg partMCC-5009 BoardRAS-10SAVP-ND, RAS-13SAVP-ND, RAS-16SAVP-ND MCC-5045CAM-MD12TF DC12V Parts name Type SpecificationsMP24Z3N Parts name Model name RatingCAM-B22YGTF-3 Refrigerant Cycle DiagramOperation Data Cooling Operation START/STOP Operation Mode Selection Sleep ModeAUTO, COOL, DRY, Heat Outdoor Unit Inverter Assembly For Indoor UnitMCC5009 P.C.B  Operations followed to Outline of Air Conditioner ControlRole of indoor unit controller Role of outdoor unit controllerAuto Restart Function Filter IndicatorRemote Controller and Its Fuctions Operation DescriptionON/OFF Remote controllerIndoor unit Outdoor unitDRY operation Auto operationSymbols Indication Fan speedIndoor fan air flow rate Cold draft preventive control Operation flow and applicable data, etc DescriptionHeating operation Indication Fan speedTable is selected Outdoor temperature ToMode, by the conditions Outdoor fan shownRemote controller Indoor unit Exchanger detects condensation temperature When temperature of the indoorExchanger detects evaporation temperature and controls Compressor speed so that temperature of the heatDefrost operation Operation flow and applicable data, etcCase of operation stop ConditionAir direction Louver position in cooling operationLouver position in heating operation Louver position in dry operationSleep ModeCooling operation Temporary When keeping Reset button pushed forIf the filter lamp goes on, push Reset Push Reset button againOperation PurposeSH control Release control PMV open degree control Stop by Setup value Power OFFClean operation Indoor P.C. board Setting the clean operation cancelSetting the clean operation This completes the clean operation settingSetting the unit Setting the remote controllerIndoor control P.C. board At shipment Purpose Heat operation8C Heat operation -ND model only To reduce noise, Reset button OutdoorWith Quiet control/Non-select method Purpose On 8˚C Heat StartDuring stop of air conditioner During operation of air conditionerCompressor speed control Refer to 4. Capacity control Basic fan controlIndoor fan control Auto TSCBase plate cord heater control Purpose To temp Heater output OperationOFF How to Set the Auto Restart Function When the unit is standby Not operatingWhen the unit is in operation When the system is operating Power Failure During Timer OperationHow to Turn Off Filter Indicator When the system is on stand-by not operatingParts Name of Remote Controller Display Automatic operation Safety Cautions For the rear left and left pipingDo not allow the drain hose to become slack Optional Parts, Accessories and Tools Optional Installation PartsAccessory and Installation Parts New tools for R410A Applicable to R22 model Changes Installation/Servicing ToolsNew tools for R410A Changes in the product and componentsMounting the installation plate Installation LocationRemote controller Drilling and Mounting Installation PlateAnchor bolt Projection 15mm or less When the installation plate is directly mounted on the wallWiring Connection How to connect the connecting cable Electrical WorkChanging drain hose How to remove the drain capHow to remove the drain hose Die-cutting front panel slitLeft-hand connection with piping How to attach the drain capHow to attach the drain hose Case of bottom right or bottom left pipingIndoor Unit Installation DrainageShield pipe Drain hose Inside the room Strong wind Precautions for adding refrigerantFlaring size B Unit mm Draining the WaterRefrigerant Piping Connection Flaring Projection margin in flaring a Unit mmTightening Connection Use a vacuum pumpTo secure To tighten Model RAS Packed Valve handling precautionsWiring Connection Stripping length of connecting cableTest Operation JAVP-E series insulated type Precautions when handling the new inverter 3DV InverterTroubleshooting Procedure Control circuitry has an uninsulated constructionInverter cover Do not lay the circuit board assembly flatDischarging method Sensor leadsOperation Which is not a Trouble Program Operation Confirmation of Power SupplyConfirmation of Power Voltage First ConfirmationCheck Block display Description for self-diagnosis Code Primary JudgmentJudgment by Flashing LED of Indoor Unit Which lamp does flash?Push on or OFF button Self-Diagnosis by Remote Controller Check CodeHow to Use Remote Controller in Service Mode Push START/STOP button to release the service modeRemarks Block distinctionJudgment and action Air Block Cause of operationBlock Cause of operation Primary check Judgment of Trouble by Every SymptomIndoor Unit Including Remote Controller Confirmation procedureOnly the indoor motor fan does not operate Cause Inspection procedureTroubleshooting for remote controller Terminal block at indoor side Wiring Failure Interconnecting and Serial Signal WireCheck procedure Select phenomena described below Outdoor unit does not operateCheck Code 1C Miswiring in indoor/outdoor units and 1E Check procedure1C1E Primary check TroubleshootingHow to Check Whether the Air Purifier is Good or Not Conduction check of micro-switchHow to Diagnose Trouble in Outdoor Unit Summarized Inner Diagnosis of Inverter AssemblyDiagnosis/Process flowchart Contents Summary Inspection procedures How to Check Simply the Main PartsHow to Check the P.C. Board Indoor Unit Operating precautionsCool Check proceduresProcedure Check points Causes OPERATION, TIMER, Filter11-9-2. P.C. Board Layout Sensor characteristic tablePart name Checking procedure Indoor Unit Other PartsOutdoor Unit Checking Method for Each Part Case that product is goodTester rod Resistance value Good product Cause Symptom12-1 Indoor Unit Part name Procedures RemarksHow to assemble the front panel How to assemble the high voltage generator How to assemble the electric parts box Slide the horizontal Remove the two screws used to secure Bearing base Pull out here Drain pipe Part name Procedure Remarks MicrocomputerBoard layout Attachment No. Part name Procedure Remarks Common 1. DetachmentNo. Part name Procedure Remarks 100 Some casesSTIT-4X8MSZN Board base Disconnect the leads and connectors connected toOther parts from the control board assembly 101Side cabinet left 102103 Handling precaution 104Detachment Detail a Arrow D 105Detail a Arrow D Detail C Detail B106 Parts name Qty RemarksPart name 107 MCC-5009MCC-5009-04 Part Description 240237 108109 402 407, 408 403 406 404 405 410401110 111 402 411, 412 403 406 404 405 410401112 13, 16, 19 14, 15, 17 20, 21, 23, 24113 114 13, 16, 19 14, 15, 17 20, 21, 23, 24 CORD, HEATER, Ass’y115 116 13-3. P.C. Board Layout117 118 CorrespondingModel Toshiba Carrier Corporation

RAS-10SAVP-E, RAS-B10SKVP-E, RAS-B13SKVP-E specifications

Toshiba has established itself as a leader in the HVAC market, known for its innovative technologies and reliable performance. Among its range of air conditioning units, the Toshiba RAS-B10SKVP-E, RAS-10SAVP-E, and RAS-B13SKVP-E models stand out for their efficiency and advanced features.

The Toshiba RAS-B10SKVP-E is designed for optimal cooling and heating efficiency, making it an ideal choice for small to medium-sized rooms. One of its main features is the Super Hi-M-PAM inverter technology, which enhances energy savings by continuously adjusting the compressor speed to match the cooling demand. This results in lower energy consumption while maintaining a stable temperature. Additionally, the unit boasts a 4-in-1 operation mode that allows users to select cooling, heating, dehumidification, or ventilating modes, ensuring maximum comfort at all times.

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