FILE NO. A00-T004 S U P P L E M E N T SERVICE MANUAL AIR-CONDITIONER SPLIT TYPE RAS-10YKV-E / RAS-10YAV-E RAS-13YKV-E / RAS-13YAV-E R410A PRINTED IN JAPAN, Aug.,2000 ToMo...
1-1. Specifications RAS-10YKV-E/RAS-10YAV-E Unit model Indoor Outdoor Current limited Cooling capacity Cooling capacity range Heating capacity Heating capacity range Power supply Electric Indoor Operation mode characteristics Running current Power consumption Power factor Outdoor Operation mode Running current Power consumption Power factor...
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RAS-13YKV-E/RAS-13YAV-E Unit model Indoor Outdoor Current limited Cooling capacity Cooling capacity range Heating capacity Heating capacity range Power supply Electric Indoor Operation mode characteristics Running current Power consumption Power factor Outdoor Operation mode Running current Power consumption Power factor Starting current COP (Cooling/Heating) Operating noise Indoor...
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1-2. Operation Characteristic Curve <Cooling> RAS-10YKV-E RAS-13YKV-E • Conditions Indoor : DB 27˚C/WB 19˚C Outdoor : DB 35˚C Air flow : High Pipe length : 5m 230V Compressor speed (rps) 1-3. Capacity Variation Ratio According to Temperature <Cooling> Current Limited Start RAS-10YKV-E RAS-13YKV-E •...
This air conditioner adopts the new refrigerant HFC (R410A) which does not damage the ozone layer. The working pressure of the new refrigerant R410A is 1,6 times higher than conventional refrigerant (R22). The refrigerating oil is also changed in accordance with change of refrigerant, so be careful that water, dust, and existing refrigerant or refrigerat- ing oil are not entered in the refrigerant cycle of the air conditioner using the new refrigerant during...
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Table 2-2-1 Thicknesses of annealed copper pipes Nominal diameter Outer diameter (mm) (2) Joints For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all con- taminants. a) Flare Joints Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds 20 mm.
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c) Insertion of Flare Nut d) Flare Processing Make certain that a clamp bar and copper pipe have been cleaned. By means of the clamp bar, perform the flare processing correctly. Use either a flare tool for R410A or conven- tional flare tool.
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Table 2-2-6 Flare and flare nut dimensions for R22 Outer Nominal diameter diameter (mm) 6,35 9,52 12,70 15,88 19,05 Fig. 2-2-2 Relations between flare nut and flare seal surface (2) Flare Connecting Procedures and Precautions a) Make sure that the flare and union portions do not have any scar or dust, etc.
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2-3. Tools 2-3-1. Required Tools The service port diameter of packed valve of the outdoor unit in the air conditioner using R410A is changed to prevent mixing of other refrigerant. To reinforce the pressure-resisting strength, flare processing dimensions and opposite side dimension of flare nut (For Ø12,7 copper pipe) of the refrigerant piping are lengthened.
2-4. Recharging of Refrigerant When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the following steps. Recover the refrigerant, and check no refrigerant remains in the equipment. Connect the charge hose to packed valve service port at the outdoor unit’s gas side.
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Be sure to make setting so that liquid can be charged. When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down. It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant. Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the cylinder upside down if cylinder is not equipped with siphon.
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(2) Characteristics required for flux • Activated temperature of flux coincides with the brazing temperature. • Due to a wide effective temperature range, flux is hard to carbonize. • It is easy to remove slag after brazing. • The corrosive action to the treated metal and brazing filler is minimum.
3-2. Outdoor Unit A leg part RAS-10YAV-E RAS-13YAV-E B leg part Ø4,5 embossing (Ø4STS used) (For sunshade roof attaching) 49,5 Hanger Connecting pipe port (Pipe dia.Ø6,35) Connecting pipe port (Pipe dia.Ø9,52) Mounting dimensions of anchor bolt 4 x Ø11 x 17U-shape hole (For Ø8-Ø10 anchor bolt)
4-1. Indoor Unit RAS-10YKV-E, RAS-13YKV-E SG01 DSA T6,3A 250V F01 FUSE INDOOR TERMINAL BLOCK CN30 GRN & YEL CN23 OUTDOOR INDOOR UNIT UNIT Table 4-1-1 Simple check points for diagnosing faults Check items Check to see if the OPERATION indicator goes on and off when the main OPERATION switch or breaker is turned on, or the power cord is plugged in the wall indicator...
Diode (DB01) Capacitor (C02) Fuse (F01) 10 Power supply IC (IC01) 11 Varistor (R21, R109) 12 Resistor (R01) 13 Louver motor 5-2. Outdoor Unit RAS-10YAV-E, RAS-13YAV-E Parts name SC coil (Noise filter) DC-DC transformer Reactor Outside fan motor Fan control relay Suction temp.
6. REFRIGERANT CYCLE DIAGRAM 6-1. Refrigerant Cycle Diagram RAS-10YKV-E/RAS-10YAV-E RAS-13YKV-E/RAS-13YAV-E Pressure measurement Gauge attaching port Vacuum pump connecting port Deoxidized copper pipe Outer dia. : 9,52mm Thickness : 0,8mm 4-way valve (CHV-0213) Temp. measurement NOTE : • The maximum pipe length of this air conditioner is 15 m. The additional charging of refrigerant is unneces- sary because this air conditioner is designed with charge-less specification.
6-2. Operation Data <Cooling> Temperature condition (°C) Model name Indoor Outdoor 10YKV-E 27/19 35/– 13YKV-E <Heating> Temperature condition (°C) Model name Indoor Outdoor 10YKV-E 20/– 13YKV-E NOTES : (1) Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bent. (Thermistor themometer) (2) Connecting piping condition : 5 m Heat exchanger...
7. CONTROL BLOCK DIAGRAM 7-1. Indoor Unit RAS-10YKV-E, RAS-13YKV-E Heat Exchanger Sensor Temperature Sensor Infrared Rays Signal Receiver Initializing Circuit Infrared Rays Clock Frequency Oscillator Circuit Power Supply Circuit Remote Controller Noise Filter From Outdoor Unit REMOTE CONTROLLER Indoor Unit Control Panel M.C.U Functions •...
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For INDOOR UNIT 220–230–240 V ~ 50/60 Hz Inddor unit send/receive circuit • PWM synthesis function • Input current release control • IGBT over-current detect control Discharge • Outdoor fan control temp. sensor • High power factor correction control Outdoor air •...
8. OPERATION DESCRIPTION 8-1. 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 13 to 120 rps is mounted.
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(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 control • Compressor revolution command signal defined by indoor temperature and set temperature (Correction along with variation of room temperature and correction of indoor heat...
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8-1-4. Prevent-Freezing Control The indoor heat exchanger sensor detects refriger- ant vapor temperature in COOL/DRY operation. If the temperature is below the specified value, compressor motor speed is reduced so that opera- tion is performed in temperature below the specified value to prevent-freezing of indoor heat exchanger.
• When pushing [START/STOP] button of the remote control, receive sound is issued from the main unit, and the next operations are performed together with opening the vertical air flow louvers. Table 8-1-3 RAS-10YAV-E To 13,2 To 34,1 From 34,7...
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8-2-1. Cooling Operation (The Remote Controller MODE Button is Set to the COOL Position) • Once the setting is made, the operation mode is memorized in the microcomputer so that the same operation can be effected thereafter simply by pushing [START/STOP] button. •...
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(5) Limit for maximum compressor motor speed by indoor fan speed When outdoor temperature sensor detected 32°C or lower, and indoor heat exchanger sensor detected 17°C or lower, the maximum compressor motor speed is limited by the indoor fan speed. For example, the compressor motor speed is limited as described in the table below.
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(8) ECONO. operation control When the ECONO. button of the remote control- ler is pushed, quiet and mild operation is per- formed by restraining air flow and operating motor speed. 1) Indoor air flow is controlled between SUL and L– (Low air (–)). 8-2-2.
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8-2-3. Heating Operation Transferring of heating operation signal from indoor unit to outdoor unit starts. The indoor fan motor operates by the room tempera- ture when selecting “AUTO” of “FAN” as shown in Fig. 8-2-6, and operates with a set air flow when selecting “Low”...
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16,0 15,5 11,0 10,5 Fig. 8-2-8 (4) Defrost control 1) Detection of frost In heating operation, time duration while the compressor operates is counted, and defrost operation starts by any condition described below. a. The counted time is 28 minutes or more, and status that temperature of the outdoor heat exchanger detected by the outdoor heat exchanger is –20°C or lower contin-...
8-2-4. Automatic Operation (1) As shown in Fig. 8-2-9, the operation mode (COOL, DRY, HEAT) is selected according to the outside temperature and room temperature when the operation has started. The operation in Fan mode continues until an operation mode is selected. If the room temperature is 20°C or higher when “AUTO”...
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8-4. Auto Restart Function This unit is equipped with an Automatic restarting facility which allows the unit to restart and resume the set operating conditions in the event of a power supply shutdown without the use of the hand control. The operation will resume without warning three minutes after the power is restored.
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8-4-2. How to Cancel the Auto Restart To cancel the Auto Restart function, proceed as follows: Repeat the setting procedure: the unit will acknowledge the instruction and beep three times. • When the system is stand-by (not operating) Operation Push the TEMPORARY button continuously more than three seconds.
8-5. Remote Controller 8-5-1. Parts Name of Remote Controller START/STOP button Push this button to start/stop the air conditioner. AUTO (Auto louver) button Push this button to swing the vertical air flow louvers automatically. MODE (Mode select) button Push this button to select an operation mode.
• Appliance shall be installed in accordance with national wiring regulations. If you detect any damage, do not install the unit. Contact your Toshiba dealer immediately. CAUTION • Exposure of unit to water or other moisture before installation will result in an electrical short.
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9-1-2. Optional Installation Parts Fixing bolt arrangement of outdoor unit Part • Secure the outdoor unit with the fixing bolts and nuts if the Parts name Q’ty code unit is likely to be exposed to a strong wind. Refrigerant piping Each •...
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9-2-3. Electrical Work How to connect the connecting cable 1. The supply voltage must be the same as the Wiring of the connecting cable can be carried out rated voltage of the air conditioner. without removing of the front cabinet. 1.
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9-3. Outdoor Unit Tightening Connection Align the centers of the connecting pipes and tighten the 9-3-1. Installation Place flare nut as far as possible with your fingers Then • A place which provides the spaces around the tighten the nut with a spanner and torque wrench as outdoor unit as shown in the left diagram.
10. HOW TO DIAGNOSE THE TROUBLE The pulse modulating circuits are mounted to both indoor and outdoor units. Therefore, diagnose troubles according to the trouble diagnosis proce- dure as described below. (Refer to the check points in servicing written on the wiring diagrams attached to the indoor/outdoor units.) Table 10-1 Troubleshooting Procedure...
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10-1-3. Operation Which is not a Trouble (Program Operation) For controlling the air conditioner, the program operations are built in the microcomputer as described in the following table. If a claim is made for running operation, check whether or not it meets to the contents in the following table.
10-3. Judgment by Flashing LED of Indoor Unit While the indoor unit monitors the operation status of the air conditioner, if the protective circuit operates, the contents of self-diagnosis are displayed with block on the indoor unit indication section. Check Item code Indoor...
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10-4. Self-Diagnosis by Remote Controller (Check Code) (1) The self-diagnosis by the check code is performed while items B to E blocks are displayed. (2) When turning the operation mode on the remote controller to the service mode, and operating the remote controller, the controller of the indoor unit can self-diagnose operation of the protection circuit by displayed contents (check code) on the remote controller, by whether all the lamps flash (5Hz) and the receiving sound (Pi, Pi, Pi ...
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10-4-3. Caution at Servicing (1) After servicing, push the START/STOP button to return to the normal mode. (2) After servicing by the check code, turn off breaker of the power supply, and turn on breaker of the power supply again so that memory in the microcomputer returns the initial status. However, the check codes are not deleted even if the power supply is turned off because they are stored in the fixed memory.
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Block distinction Check Check Block Cause of operation code code Outdoor Inverter over-current P.C. board protective circuit operates. (Short time) Position-detect circuit error or short-circuit between windings of compressor Current-detect circuit error Being out of place, disconnection or short- circuit of outdoor temp. sensor Disconnection or short- circuit of discharge temp.
10-5. Judgment of Trouble by Every Symptom 10-5-1. Indoor Unit (Including Remote Controller) (1) Power is not turned on (Does not operate entirely) Turn off the power supply once, and turn on it again after 5 seconds passed. Does the operation lamp flash? Is the power supply turned on by pressing...
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(3) Only the indoor fan does not operate Turn off the power supply. Turn on the power supply. Does the fan stop in no operating Control board is defective. status? Start the operation with low fan setting in cool operation. Does the fan rotate? of the motor connector Turn off the power supply.
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(4) Indoor fan motor starts rotating by turning on power supply alone (Operation may be normally performed (selected) by operation on the remote controller.) <Cause> IC is built in the indoor fan motor, therefore P .C. board is also mounted to inside of the motor. If soldering of P.C.
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(5) How to examine whether remote controller is good or bad Operation Check Items Considerable main cause Measures Item by symptom Is there direct sunlight on the receptor of the air conditioner? Is there any thyristor fluorescent light near by? Keep the air conditioner away Avoid direct...
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10-5-2. Wiring Failure (Interconnecting and Serial Signal Wire) (1) Outdoor unit does not operate 1) Is the voltage between Confirm that transmission from indoor to outdoor is correctly performed based upon the following dia- gram. NOTE: • Measurement should be performed 2 minutes and 30 seconds after starting of the operation. •...
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10-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E <Check procedure> Gas leakage, disconnection of TS/TC sensors (Check code 02, 1C) Valve drive check Is coil of the pulse modulation valve (P.M.V.) correctly set? Is connector of coil connected to inverter? Is positioning sound of valve (sound hitting to stopper) heard from valve when the air conditioner starts the operation after turning off power of the air conditioner once?
10-7. How to Diagnose Trouble in Outdoor Unit 10-7-1. Summarized Inner Diagnosis of Inverter Assembly Diagnosis/Process flowchart Remove connector of compressor. Check 25A fuse (Part No.F01). Replace fuse. Check electrolytic capacitor, diode block (DB01), etc. Check 15A fuse (Part No.F03). Replace control board assembly.
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Diagnosis/Process flowchart Check winding of compressor. Check Replace fan motor com- position pressor. detect signal. Replace outdoor motor. Replace control board assembly. Check compressor winding resistance. Replace Replace control board. compressor. 10-8. How to Check Simply the Main Parts 10-8-1. How to Check the P.C. Board (Indoor Unit) (1) Operating precautions 1) When removing the front panel or the P.C.
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(3) Check procedures Procedure Shut off the power supply and remove the P.C. board assembly from the electronic parts base. Remove the connecting cable from the terminal block. Remove the connector for the motor, and turn the power on. If the OPERATION lamp flashes (0,5 sec.
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10-8-2. P.C. Board Layout [1] Sensor characteristic table Temperature (˚C) Bottom View (For the Top View, refer to page 61.) TD : Discharge temp. sensor TA : Room temp. sensor TC : Heat exchanger temp. sensor TO : Outdoor temp. sensor TA, TC, TO, TE, TS TE : Outdoor heat exchanger temp.
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10-8-3. Indoor Unit (Other Parts) Part name Room temp. (TA) sensor Heat exchanger (TC) sensor Remote controller Louver motor MP35EA7 Indoor fan motor 10-8-4. Outdoor Unit Part name Compressor (Model : DA91A1F-44F) Outdoor fan motor (Model : ICF-140-40-7) Compressor thermo. Bimetal type (Model : PW - 2AL) Outdoor temperature sensor (TO), discharge temperature...
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10-8-5. Checking Method for Each Part Part name Electrolytic capacitor (For raising pressure, smoothing) Converter module Checking procedure 1. Turn OFF the power supply breaker. 2. Discharge all four capacitors completely. 3. Check that safety valve at the bottom of capacitor is not broken. 4.
10-9. How to Simply Judge Whether Outdoor Fan Motor is Good or Bad 1. Symptom • Outdoor fan motor does not rotate. • Outdoor fan motor stops within several tens seconds though it started rotating. • Outdoor fan motor rotates or does not rotate according to the position where the fan stopped., etc. Remote controller check code “02 : Outdoor block, 1A : Outdoor fan drive system error”...
11. HOW TO REPLACE THE MAIN PARTS 11-1. Indoor Unit Part name Front panel 1) After stopping the operation of the air conditioner, be sure to turn off the circuit breaker or disconnect the power plug from the AC wall socket. 2) Open the screw caps and remove the two screws fixing the front panel.
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Part name Horizontal grille 1) Perform the process 2) Remove the screw fixing the louver motor, and Note: remove the louver motor. The horizontal 3) Remove the shaft of the horizontal grille from the grille can not be drain-pan. removed without removing the louver motor.
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11-2. Microcomputer Part name Common 1) Turn the power supply off to stop the operation of procedure air-conditioner. 2) Remove the front panel. • Remove the two fixing screws. (Ø4 x 14l) 3) Remove the electrical part base. <P.C. board layout> Procedure Replace the thermal fuse, terminal block, microcomputer ass’y and the...
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11-3. Outdoor Unit Part name Common 1. Detachment 1) Stop operation of the air conditioner, and remove procedure the power plug of the indoor unit from plug socket. 2) Remove the valve cover. (ST1TØ4 x 10l 1 pc.) • After removing screw, remove the valve cover pulling it downward.
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Part name Inverter 1. Detachment assembly 1) Perform work of item 1 of 2) Remove screw (ST1TØ4 x 10l 1 pc.) of the upper part of the front cabinet. • If removing the inverter cover in this condition, P .C. board can be checked. •...
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Part name Control board 1) Disconnect lead wires and connectors connected assembly from the control board assembly to other parts. 1. Lead wires • Connection with terminal block : 3 wires (Black, White, Orange) • Connection with compressor : Remove the connector (3P). •...
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Part name Fan motor 1) Perform work of item 1 of 2) Remove the flange nut fixing the fan motor and the propeller. • Flange nut is loosened by turning clockwise. (To tighten the flange nut, turn counterclock- wise.) 3) Remove the propeller fan. 4) Disconnect the connector for fan motor from the inverter.
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Part name Pulse 1. Detachment modulating 1) Perform work of item 1 of valve coil 2) Turn the coil clockwise (counterclockwise) by 90 degrees, and remove coil from the pulse modu- lating valve. 2. Attachment 1) Set take-out part of the lead wire of coil to the coil inserting position of the pulse modulating valve, and attach the coil.
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Part name Replacement 1) Cut the sensor 100 mm longer than old one. of temperature 2) Cut the protective tube after pulling out it sensor for (200 mm). servicing only 3) Move the protective tube toward the thermal sensor side and tear the tip of lead wire in Common service two then strip the covering part.
12. EXPLODED VIEWS AND PARTS LIST 12-1. Indoor Unit (1) RAS-10YKV-E, RAS-13YKV-E Location Part Description 43T60002 Terminal Block, 3P , AC 300V, 20A 43T69004 Sensor, Heat Exchanger 10k , 25°C 43T69005 Sensor, Thermostat 10k , 25°C 43T69031 P .C. Board, Assembly, WRS-LED, MCC-766 407 : RAS-10YKV-E 408 : RAS-13YKV-E...
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Indoor Unit (2) RAS-10YKV-E, RAS-13YKV-E Location Part Description 43T00043 Front Panel Assembly 43T00044 Grille, Suction 43T80001 Air Filter (L) 43T80002 Air Filter (R) 43T07021 Screw Cap (L) 43T07020 Screw Cap (R) 43T08106 LED Panel (10YKV-E) 43T08107 LED Panel (13YKV-E) 43T19004 Accepted Signal Filter 43T09035 Horizontal Louver Assembly for Service 43T09004 Louver Assembly...