Toshiba RAS-B13SKVP-E Discharging method, Do not lay the circuit board assembly flat

Page 69

CAUTION

A high voltage (equivalent to the supply voltage) is also energized to ground through the sensors, PMV and other low-voltage circuits. The sensor leads and other wires are covered with insulated tubes for protection. Nevertheless, care must be taken to ensure that these wires are not pinched.

Take sufficient care to avoid directly touching any of the circuit parts without first turning off the power.

At times such as when the circuit board is to be replaced, place the circuit board assembly in a vertical position.

Laying the board flat on an electrically conductive object (such as the top panel of the air conditioner's outdoor unit) while a charge is still retained by the electrolytic capacitors of the inverter's main circuit may cause short-circuiting between the electrolytic capacitors and secondary circuit components and result in damage to the components.

Sensor leads

Fig. 11-2

Do NOT lay the circuit board assembly flat.

KPrecautions when inspecting the control section of the outdoor unit

NOTE :

Alarge-capacity electrolytic capacitor is used in the outdoor unit controller (inverter). Therefore, if the power supply is turned off, charge (charging voltage DC280 to 380V) remains and discharging takes a lot of time. After turning off the power source, if touching the charging section before discharging, an electrical shock may be caused. Discharge the electrolytic capacitor completely by using soldering iron, etc.

< Discharging method >

1.Remove the inverter cover (plating) by opening four mounting claws.

2.As shown below, connect the discharge resistance (approx. 10040W) or plug of the soldering iron to voltage between + – terminals of the C14 (“CAUTION HIGH VOLTAGE” is indicated.) electrolytic capacitor (500µF/400V) on P.C. board, and then perform discharging.

Discharging position

(Discharging period Plug of

10 seconds or more) soldering iron

Inverter cover

P. C. board (Soldered surface)

Fig. 11-3

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Image 69
Contents AIR-CONDITIONER Contents For general public use New Refrigerant Air Conditioner InstallationFor Reference Specifications SpecificationsRAS-10SKVP-ND RAS-13SKVP-ND RAS-16SKVP-ND Heating Operation Characteristic CurveCooling CurrentCooling Capacity Variation Ratio According to TemperatureHeating Capacity ratio % 110 100Refrigerant Piping Installation Safety During Installation/ServicingPiping Materials and Joints Used Copper PipesFlare processing procedures and precautions Processing of Piping MaterialsJoints Clutch type Wing nut type Flare tool for R410A Conventional flare toolFlare tool for R22 Conventional flare tool DiameterFlare 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 Outdoor Unit Mounting dimensions of anchor boltDetailed a leg part Detailed B leg partMCC-5009 BoardRAS-10SAVP-ND, RAS-13SAVP-ND, RAS-16SAVP-ND MCC-5045MP24Z3N Parts name Type SpecificationsParts name Model name Rating CAM-MD12TF DC12VCAM-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 Role of indoor unit controller Outline of Air Conditioner ControlRole of outdoor unit controller  Operations followed toRemote Controller and Its Fuctions Filter IndicatorOperation Description Auto Restart FunctionIndoor unit Remote controllerOutdoor unit ON/OFFDRY operation Auto operationSymbols Indication Fan speedIndoor fan air flow rate Heating operation Operation flow and applicable data, etc DescriptionIndication Fan speed Cold draft preventive controlMode, by the conditions Outdoor temperature ToOutdoor fan shown Table is selectedRemote controller Indoor unit Exchanger detects evaporation temperature and controls When temperature of the indoorCompressor speed so that temperature of the heat Exchanger detects condensation temperatureCase of operation stop Operation flow and applicable data, etcCondition Defrost operationLouver position in heating operation Louver position in cooling operationLouver position in dry operation Air directionSleep ModeCooling operation If the filter lamp goes on, push Reset When keeping Reset button pushed forPush Reset button again TemporaryOperation PurposeSH control Release control PMV open degree control Stop by Setup value Power OFFClean operation Setting the clean operation Setting the clean operation cancelThis completes the clean operation setting Indoor P.C. boardSetting 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 During stop of air conditioner StartDuring operation of air conditioner On 8˚C HeatIndoor fan control Basic fan controlAuto TSC Compressor speed control Refer to 4. Capacity controlBase 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 How to Turn Off Filter Indicator Power Failure During Timer OperationWhen the system is on stand-by not operating When the system is 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 Installation/Servicing ToolsChanges in the product and components New tools for R410A Applicable to R22 model ChangesRemote controller Installation LocationDrilling and Mounting Installation Plate Mounting the installation plateWiring Connection How to connect the connecting cable When the installation plate is directly mounted on the wallElectrical Work Anchor bolt Projection 15mm or lessHow to remove the drain hose How to remove the drain capDie-cutting front panel slit Changing drain hoseHow to attach the drain hose How to attach the drain capCase of bottom right or bottom left piping Left-hand connection with pipingIndoor Unit Installation DrainageShield pipe Drain hose Inside the room Strong wind Precautions for adding refrigerantRefrigerant Piping Connection Flaring Draining the WaterProjection margin in flaring a Unit mm Flaring size B Unit mmTightening Connection Use a vacuum pumpTo secure To tighten Wiring Connection Packed Valve handling precautionsStripping length of connecting cable Model RASTest Operation Troubleshooting Procedure Precautions when handling the new inverter 3DV InverterControl circuitry has an uninsulated construction JAVP-E series insulated typeDischarging method Do not lay the circuit board assembly flatSensor leads Inverter coverConfirmation of Power Voltage Confirmation of Power SupplyFirst Confirmation Operation Which is not a Trouble Program OperationJudgment by Flashing LED of Indoor Unit Primary JudgmentWhich lamp does flash? Check Block display Description for self-diagnosis CodeHow to Use Remote Controller in Service Mode Self-Diagnosis by Remote Controller Check CodePush START/STOP button to release the service mode Push on or OFF buttonJudgment and action Block distinctionAir Block Cause of operation RemarksBlock Cause of operation Indoor Unit Including Remote Controller Judgment of Trouble by Every SymptomConfirmation procedure Primary checkOnly the indoor motor fan does not operate Cause Inspection procedureTroubleshooting for remote controller Check procedure Select phenomena described below Wiring Failure Interconnecting and Serial Signal WireOutdoor unit does not operate Terminal block at indoor sideCheck Code 1C Miswiring in indoor/outdoor units and 1E Check procedure1C1E How to Check Whether the Air Purifier is Good or Not TroubleshootingConduction check of micro-switch Primary checkHow to Diagnose Trouble in Outdoor Unit Summarized Inner Diagnosis of Inverter AssemblyDiagnosis/Process flowchart Contents Summary How to Check the P.C. Board Indoor Unit How to Check Simply the Main PartsOperating precautions Inspection proceduresProcedure Check points Causes Check proceduresOPERATION, TIMER, Filter Cool11-9-2. 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 Other parts from the control board assembly Disconnect the leads and connectors connected to101 Board baseSide cabinet left 102103 Handling precaution 104Detachment Detail a Arrow D Detail C 105Detail B Detail a Arrow D106 Parts name Qty RemarksPart name 107 MCC-5009MCC-5009-04 237 240108 Part Description109 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.

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