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Toshiba RAS-B10UFV-E1 Service Manual
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Toshiba RAS-B10UFV-E1 Service Manual

Toshiba RAS-B10UFV-E1 Service Manual

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SERVICE MANUAL
Indoor Unit
<Console, Heat Pump Type>
RAS-B10UFV-E 1
RAS-B13UFV-E 1
RAS-B18UFV-E 1
R410A
FILE NO. SVM-15040-7
SPLIT TYPE
Outdoor Unit
<Heat Pump Type>
RAS-10 N3 AV2-E 1
RAS-13 N3 AV2-E 1
RAS-18 N3 AV 2 -E
Revised on January, 2020

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Summary of Contents for Toshiba RAS-B10UFV-E1

  • Page 1 FILE NO. SVM-15040-7 SERVICE MANUAL SPLIT TYPE Indoor Unit Outdoor Unit <Console, Heat Pump Type> <Heat Pump Type> RAS-B10UFV-E 1 RAS-10 N3 AV2-E 1 RAS-B13UFV-E 1 RAS-13 N3 AV2-E 1 RAS-B18UFV-E 1 RAS-18 N3 AV 2 -E R410A Revised on January, 2020...

  • Page 2: Table Of Contents

    FILE NO. SVM-15040-2 CONTENTS 1. SAFETY PRECAUTIONS ................3 2. SPECIFICATIONS ..................6 3. REFRIGERANT R410A ................9 4. CONSTRUCTION VIEWS ................ 17 5. WIRING DIAGRAM .................. 19 6. SPECIFICATIONS OF ELECTRICAL PARTS ......... 21 7. REFRIGERANT CYCLE DIAGRAM ............22 8.

  • Page 3: Safety Precautions

    FILE NO. SVM-15040-2 1. SAFETY PRECAUTIONS SAFETY PRECAUTIONS The important contents concerned to the safety are described on the product itself and on this Service Manual. Please read this Service Manual after understanding the described items thoroughly in the following contents (Indications/Illustrated marks), and keep them.
  • Page 4 FILE NO. SVM-15040-2 CAUTION TO DISCONNECT THE APPLIANCE FROM THE MAIN POWER SUPPLY A switch or circuit breaker that can disconnect all poles must be included in the fixed wiring. Be sure to use an approved circuit breaker or switch. DANGER •...
  • Page 5 FILE NO. SVM-15040-2 CAUTION • Exposure of unit to water or other moisture before installation may result in an electrical short. Do not store in a wet basement or expose to rain or water. • Do not install in a place that can increase the vibration of the unit. Do not install in a place that can amplify the noise level of the unit or where noise or discharged air might disturb neighbors.

  • Page 6: Specifications

    -10-46/-15-24 -10-46/-15-24 Outdoor (Cooling / Heating) Accessory Indoor unit Installation plate Wireless remote controller Batteries Toshiba New IAQ Filter Install screw Remote controller holder Pan head wood screw for Remote control holder Insulate pipe Installation manual Owner's manual Outdoor unit...
  • Page 7 FILE NO. SVM-15040-2 2-2. Combined multi-split outdoor unit The multi-split outdoor units, which can be combined with B**UFV-E series indoor unit are as described below: Combined outdoor unit Indoor unit model name Outdoor model name unit type B18UFV-E B13UFV-E B10UFV-E RAS-M14GAV-E 2-room Multi RAS-M18GAV-E...
  • Page 8 FILE NO. SVM-15040-2 2-2. Operation Characteristic Curve <Cooling> <Heating> RAS-B18UFV-E1 RAS-B18UFV-E1 RAS-B13UFV-E1 RAS-B13UFV-E1 RAS-B10UFV-E1 RAS-B10UFV-E1 Conditions Conditions Indoor : DB 27 C/WB 19 Indoor : DB 20 C/WB 15 Outdoor : DB 35 C/WB 24 Outdoor : DB 7 C/WB 6...

  • Page 9: Refrigerant R410A

    FILE NO. SVM-15040-2 3. REFRIGERANT R410A This air conditioner adopts the new refrigerant HFC 6. When an air conditioning system charged with a (R410A) which does not damage the ozone layer. large volume of refrigerant is installed in a small room, it is necessary to exercise care so that, The working pressure of the new refrigerant R410A even when refrigerant leaks, its concentration...
  • Page 10 FILE NO. SVM-15040-2 Table 3-2-1 Thicknesses of annealed copper pipes Thickness (mm) Nominal diameter Outer diameter (mm) R410A 6.35 0.80 0.80 9.52 0.80 0.80 12.70 0.80 0.80 15.88 1.00 1.00 2. Joints For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants. a) Flare Joints Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds 20 mm.
  • Page 11 FILE NO. SVM-15040-2 d) Flare Processing Make certain that a clamp bar and copper pipe have been cleaned. ØD By means of the clamp bar, perform the flare processing correctly. Use either a flare tool for R410A or conven- tional flare tool. Flare processing dimensions differ according to the type of flare tool.
  • Page 12 FILE NO. SVM-15040-2 Table 3-2-6 Flare and flare nut dimensions for R22 Dimension (mm) Nominal Outer diameter Thickness Flare nut width diameter (mm) (mm) (mm) 6.35 9.52 13.0 13.5 12.70 16.2 16.0 12.9 15.88 19.7 19.0 16.0 19.05 23.3 24.0 19.2 Fig.
  • Page 13 FILE NO. SVM-15040-2 3-3. Tools 3-3-1. Required Tools The service port diameter of packed valve of the outdoor unit in the air-water heat pump 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.
  • Page 14 FILE NO. SVM-15040-2 3-4. 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. When the compound gauge’s pointer has indicated –0.1 Mpa (–76 cmHg), place the handle Low in the fully closed position, and turn off the vacuum pump’s power switch.
  • Page 15 FILE NO. SVM-15040-2 NOTE : 1. Be sure to make setting so that liquid can be charged. 2. 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.
  • Page 16 FILE NO. SVM-15040-2 3-5-3. Brazing 2. Characteristics required for flux • Activated temperature of flux coincides with the As brazing work requires sophisticated techniques, brazing temperature. experiences based upon a theoretical knowledge, it must be performed by a person qualified. •...

  • Page 17: Construction Views

    FILE NO. SVM-15040-2 4-1. Indoor Unit RAS-B10UFV-E1 RAS-B13UFV-E1 RAS-B18UFV-E1 – 17 –...
  • Page 18 FILE NO. SVM-15040-2 4-2. Outdoor Unit RAS-10SAV2-E RAS-13SAV2-E Ø6 hole R5.5 Ø6 hole Ø11x14 hole A detail Drawing (Back leg) Ø 11 x 14 Hole Ø 25 Drain outlet B Detail Drawing (Front leg) (For 8 - 10 anchor bolt) Ø...

  • Page 19: Wiring Diagram

    FILE NO. SVM-15040-2 5. WIRING DIAGRAM 5-1. RAS-B10UFV-E1 / RAS-10N3AV2-E1, RAS-B13UFV-E1 / RAS-13N3AV2-E1 COMPRESSOR IPM module DB01 FUSE 3.15A (SUCTION PIPE VARISTOR TEMP. SENSOR) CN63 SURGE ABSORBER (OUTDOOR FUSE TEMP. SENSOR) CN62 (DISCHARGE PIPE TEMP. SENSOR) COIL 4WAY VALVE (From Main Line)
  • Page 20 FILE NO. SVM-15040-2 5-2. RAS-B18UFV-E1 / RAS-18N3AV2-E 3 2 1 Indoor Terminal Block Heat Exchanger GRN &YEL POWER SUPPLY Fan Motor Base (From outdoor unit) SHEET GRN&YEL 1∅ 220-240~ ,50Hz METAL 1∅ 220-230~ ,60Hz CN501 CN03 CN01 CN801 Stepper motor CN21 1 2 3 (Vertical air flow louver)

  • Page 21: Specifications Of Electrical Parts

    FILE NO. SVM-15040-2 6. SPECIFICATIONS OF ELECTRICAL PARTS 6-1. Indoor Unit Part s n ame Type Specif icat io ns Fan motor (for indoor) ICF-340-41-1 DC340, 41W Room temp. sensor (TA-sensor) ( - ) at 25°C Ω Heat exchanger temp. sensor (TC-sensor) 10kΩ...

  • Page 22: Refrigerant Cycle Diagram

    FILE NO. SVM-15040-2 7. REFRIGERANT CYCLE DIAGRAM 7-1. Refrigerant Cycle Diagram RAS-B10UFV-E1 / RAS-10N3AV2-E1 RAS-B13UFV-E1 / RAS-13N3AV2-E1 Temp. measurement INDOOR UNIT Indoor heat exchanger Cross flow fan Max. : 20m Min. : 2m Pressure measurement Chargeless : 15m Deoxidized copper pipe Gauge attaching port Outer dia.
  • Page 23 FILE NO. SVM-15040-2 7-2. Refrigerant Cycle Diagram RAS-B18UFV-E1 / RAS-18N3AV2-E T1 Temp. measurement INDOOR UNIT Indoor heat exchanger Turbo fan Max. : 20m Min. : 2m Chargeless : 15m Pressure measurement Deoxidized copper pipe Charge : 20g/m Gauge attaching port Outer dia.
  • Page 24 FILE NO. SVM-15040-2 7-2. Operation Data <Cooling> Tempeature Model name Standard Heat exchanger Indoor Outdoor Compressor condition(°C) RAS- pressure pipe temp. fan mode fan mode revolution Indoor Outdoor P (MPa) T1 (°C) T2 (°C) (rps) 27/19 35/- B10UFV-E1 0.9 to 1.1 12 to 14 41 to 43 High...

  • Page 25: Control Block Diagram

    FILE NO. SVM-15040-2 8. CONTROL BLOCK DIAGRAM 8-1. Indoor Unit Indoor Unit Control Unit Heat Exchanger Sensor (TCJ) M.C.U. Louver Functions Motor Heat Exchanger Sensor (TC) • Cold draft preventing Function Room Temperature Sensor (TA) • 3-minute Delay at Restart for Compressor Louver Motor Drive Control •...
  • Page 26 FILE NO. SVM-15040-2 8-2. Outdoor Unit (Inverter Assembly) RAS-10N3AV2-E1 RAS-13N3AV2-E1 – –...
  • Page 27 FILE NO. SVM-15040-2 RAS-18N3AV2-E – –...

  • Page 28: Operation Description

    FILE NO. SVM-15040-2 9. OPERATION DESCRIPTION 9-1. Outline of Air Conditioner Control • Detection of inverter input current and current release operation This air conditioner is a capacity-variable type air • Over-current detection and prevention operation conditioner, which uses DC motor for the indoor fan to IGBT module (Compressor stop function) motor and the outdoor fan motor.
  • Page 29 FILE NO. SVM-15040-2 9-2. Operation Description 1. Basic operation ......................30 1. Operation control ....................30 2. Cooling/Heating operation ..................31 3. AUTO operation ......................31 4. DRY operation ......................32 2. Indoor fan motor control ..................... 33 3. Outdoor fan motor control ................... 36 4.

  • Page 30: Operation Description 1. Basic Operation

    FILE NO. SVM-15040-2 Item Operation flow and applicable data, etc. Description 1. Basic 1. Operation control operation Receiving the user’s operation condition setup, the operation statuses of indoor/outdoor units are controlled. 1) The operation conditions are selected by the remote controller or indoor unit display buttons as shown in the bolow.

  • Page 31: Cooling/Heating Operation

    FILE NO. SVM-15040-2 Operation flow and applicable data, etc. Description Item 1. Basic 2. Cooling/Heating operation operation The operations are performed in the following parts by controls according to cooling/heating conditions. 1) Receiving the operation ON signal of the remote controller, the cooling or heating operation signal starts being transferred form the indoor controller to the outdoor unit.

  • Page 32: Dry Operation

    FILE NO. SVM-15040-2 Operation flow and applicable data, etc. Description Item 1. Basic 4. DRY operation 1) Detects the room temperature (TA) when operation the DRY operation started. DRY operation is performed according to the difference between room temperature and the setup 2) Starts operation under conditions in the temperature as shown below.

  • Page 33: Indoor Fan Motor Control

    L(W7) L+(W8) *8 : Fan speed = (H −L+) x 1/4 + L+ (Linear appro ximation from H and L+) (table 1) Indoor fan air flow rate <Cooling> Fan speed RAS-B10UFV-E1 RAS-B13UFV-E1 RAS-B18UFV-E1 level Cool Fan speed Air flow rate...
  • Page 34 FILE NO. SVM-15040-2 Item Operation flow and applicable data, etc. Description 2. Indoor fan <In heating operation> 1) When setting the fan speed to L, motor control L+, M, M+ or H on the remote controller, the operation is per- formed with the constant speed HEAT ON shown in Fig.
  • Page 35 • When 25 minutes or more passed after operation start FAN Manual • Room temp. < Set temp. –4°C • Room temp. = Set temp. –3.5°C (Table 2) Indoor fan air flow rate <Heating> Fan speed RAS-B10UFV-E1 RAS-B13UFV-E1 RAS-B18UFV-E1 level HEAT Fan speed...

  • Page 36: Outdoor Fan Motor Control

    FILE NO. SVM-15040-2 Item Operation flow and applicable data, etc. Description 3. Outdoor fan The blowing air volume at the outdoor unit side is controlled. 1) The operation command sent motor control from the remote controller is Receiving the operation command from the controller of processed by the indoor unit indoor unit, the controller of outdoor unit controls fan speed.
  • Page 37 FILE NO. SVM-15040-2 Item Operation flow and applicable data, etc. Description 18N3AV2-E In cooling operation In heating operation Compressor speed (rps) < 22.1 < 50.3 50.3 ≤ < 30.5 < 55.1 55.1≤ Compressor speed (rps) TO ≥ 10°C TO ≥ 38°C TO <...

  • Page 38: Capacity Control

    FILE NO. SVM-15040-2 Item Operation flow and applicable data, etc. Description 4. Capacity The cooling or heating capacity depending on the load is 1) The difference between set control adjusted. temperature on remote controller (Ts) and room temperature (TA) According to difference between the setup value of tempera- is calculated.

  • Page 39: Release Protective Control By Temperature Of Indoor Heat Exchanger

    FILE NO. SVM-15040-2 Item Operation flow and applicable data, etc. Description 6. Release protective <In cooling/dry operation> 1) When temperature of the indoor control by tempera- heat exchanger drops below 5°C, (Prevent-freezing control for indoor heat exchanger) ture of indoor heat the compressor speed is In cooling/dry operation, the sensor of indoor heat exchanger...

  • Page 40: Defrost Control (Only In Heating Operation)

    FILE NO. SVM-15040-2 Item Operation flow and applicable data, etc. Description 7. Defrost control (This function removes frost adhered to the outdoor The necessity of defrost operation is (Only in heating heat exchanger.) detected by the outdoor heat exchanger operation) temperature.

  • Page 41: Air Outlet Selection

    FILE NO. SVM-15040-2 Item Operation flow and applicable data,etc Description 8. Air outlet 1. Purpose < How to change air outlet selection > selection 1. Operate the air conditioner and select cooling or heating mode. (Air outlet selection can't be changed at standby mode.) 2.

  • Page 42: Lower Air Outlet Louve Control

    FILE NO. SVM-15040-2 Item Operation flow and applicable data,etc Description 8. Air outlet < How to set to change upper-flow at Bi-flow setting in selection cooling 1. Stop operation. 2. Push and hold AIR OUTLET SELECT button on the unit operation panel over 10seconds (less than 20seconds).

  • Page 43: Upper Air Outlet Louver Control

    FILE NO. SVM-15040-2 Item Operation flow and applicable data,etc Description 10. Upper air 1. Description Upper louver position can be arbitrarily set pu by pushing outlet louver [FIX] button of the remote control. control · Upper louver position is stored in memory by the microcomputer, and the louver returns to the stored position when the next operation is...

  • Page 44: Eco Operation

    FILE NO. SVM-15040-2 Item Operation flow and applicable data, etc. Description 11. ECO When pressing [ECO] button on the remote controller, a <Cooling operation> operation Economic operation is performed. 1) The control target temperature <Cooling operation> increase 0.5ºC per hour up to 2ºC This function operates the air conditioner with the difference starting from the set temperature between the set and the room temperature as shown in the...

  • Page 45: Test Operation

    FILE NO. SVM-15040-2 Item Operation flow and applicable data, etc. Description 12. Test When keeping [OPERATION] button pressed for 1) When pressing [OPERATION] button, the operation 10 seconds or more, the temporary [COOL] operation previous setting operation starts. is performed. 2) When keeping [OPERATION] button pressed for 3 seconds or more, Pi, Pi, Pi sound is heard and [AUTO RESTART] control is...

  • Page 46: Pulse Modulating Valve (P .M.v.) Control

    FILE NO. SVM-15040-2 Item Operation flow and applicable data, etc. Description 14. Pulse This function controls throttle amount of the 1) When starting the operation, move the Modulating refrigerant in the refrigerating cycle. valve once until it fits to the stopper. value (P.M.V.) (Initialize) According to operating status of the air conditioner,...

  • Page 47: Self-Cleaning Function

    FILE NO. SVM-15040-2 Item Operation flow and applicable data, etc. Description 15. Self-Cleaning 1. Purpose function The Self-Cleaning operation is to minimize the growth of mold, bacteria etc. by running the fan and drying so as to keep the inside of the air conditioner clean. Unit now performing cooling or dry operation Self-Cleaning operation When the cooling or dry operation shuts...

  • Page 48: Selt-Cleaning Function Release

    FILE NO. SVM-15040-2 Item Operation flow and applicable data, etc. Description 15. Self-Cleaning • Self-Cleaning diagram function Operation display FCU fan rpm is depend on presetting. (240RPM) Upper airoutlet OPEN OPEN (11º) CLOSE OPEN or CLOSE OPEN or CLOSE OPEN or CLOSE Lower airoutlet depend on airoutlet selection depend on airoutlet selection...

  • Page 49: Remote-A Or B Selection

    FILE NO. SVM-15040-2 Item Operation flow and applicable data, etc. Description To separate using of remote control for each indoor 17. Remote-A or B 1. Purpose selection unit in case of 2 air conditioner are installed nearly. This operation is to operate only one Remote Control B Setup.

  • Page 50: Quiet Mode

    FILE NO. SVM-15040-2 Item Operation flow and applicable data, etc. Description 18. QUIET mode When the [QUIET] button is pressed, the fan of the Quiet mode is the system which, control the indoor unit will be restricted the revolving speed at revolving speed of indoor fan to work −...

  • Page 51: One-Touch Comfort

    FILE NO. SVM-15040-2 Item Operation flow and applicable data, etc. Description 21. One-Touch One touch comfort is the fully automated operation Operation condition for model to Europe Comfort that is set according to the preferable condition in market a region. When an indoor unit receives "One Touch Comfort Signal"...

  • Page 52: Set Temp. Correction

    FILE NO. SVM-15040-2 Item Operation flow and applicable data,etc Description 24. Set temp. 1. Purpose Set temp. can be corrected by changing the set temp. correction When the difference between the set correnction value. Initial setting of the set temp. correction value is 0. temperature of the remote control and the room temperature is wide due to Set temp.

  • Page 53: Outdoor Quiet Control

    FILE NO. SVM-15040-2 Item Operation flow and applicable data,etc Description As shown in the table, the max. revolution number of 25. Outdoor 1. Purpose compressor can be reduced. Quiet control For the users who concern about As the max. number of revolution of compressor is restricted. noise of the outdoor unit, this control (for only the rise-up performance at the start time is weakened.
  • Page 54 FILE NO. SVM-15040-2 Item Operation flow and applicable data,etc Description 25. Outdoor When air conditioner is in operation before setting. Quiet control < How to set Outdoor Quiet control > (for only 1. Push and hold OPERATION button for 20seconds. •...

  • Page 55: Auto Restart Function

    FILE NO. SVM-15040-2 9-3. Auto Restart Function This indoor unit is equipped with an automatic restarting function which allows the unit to restart operating with the set operating conditions in the event of a power supply being accidentally shut down. The operation will resume without warning three minutes after power is restored.

  • Page 56: How To Cancel The Auto Restart Function

    FILE NO. SVM-15040-2 9-3-2. How to Cancel the Auto Restart Function To cancel auto restart function, proceed as follows : Repeat the setting procedure : the unit receives the signal and beeps three times. The unit will be required to be turned on with the remote control after the main power supply is turned off. •...

  • Page 57: Remote Control

    The coutomised settings control temperature air flow strength, air flow direction and other settings to provide you alternate contact with "ONE-TOUCH" of the button. If you prefer other settings you can select from the many other operation functions of your Toshiba unit Press ONE-TOUCH : Start the operaton.
  • Page 58 FILE NO. SVM-15040-2 4. DRY OPERATION (COOLING ONLY) For dehumidification, a moderate cooling performance is controlled automatically. 1. Press MODE : Select Dry 2. Press MODE : Set the desired temperature. 5. Hi-POWER OPERATION To automatically control room temperature and airflow for faster cooling or heating operation (except in DRY and FAN ONLY mode) Press HI-POWER : Start and stop the operation.
  • Page 59 FILE NO. SVM-15040-2 10. PRESET OPERATION Set your preferred operation for future use. The setting will be memorized by the unit for future operation (except air flow direction). 1. Select your preferred operation. 2. Press and hold PRESET for 3 seconds to memorize the setting. The mark displays.
  • Page 60 FILE NO. SVM-15040-2 16. SELF CLEANING OPERATION (COOL AND DRY OPERATION ONLY) Cleaning operation This function is used to dry the inside of the air conditioner to reduce te growth of mold, etc. indide the air conditioner. • When the unit shuts down after having operated for 10 or more minutes in the cooling or dry mode, the cleaning operation is started automatically, and the TIMER indicator on the nuit's display panel turns on.
  • Page 61 FILE NO. SVM-15040-2 18. TROUBLESHOOTING (CHECK POINT) The unit does not operate. Cooling or Heating is abnormally low • The power main switch is turned off. • The filters are blocked with dust. • The circuit breader is activated to cut •...
  • Page 62 FILE NO. SVM-15040-2 4 stages of brightness can be changed. Temperature indicator Other lamp Usual Usual Darkness Darkness Turn off Darkness Turn off Turn off 21. CHANGE AIR OUTLET GRILLE ON STABLE TIME (COOLING ONLY) On cooling operation, whichever air outlet is set, only Upper is used when the room temperature approaches the ser temperature.

  • Page 63: Name And Functions Of Indications On Remote Controller

    FILE NO. SVM-15040-2 9-4-3. Name and Functions of Indications on Remote Controller [Display] All indications, except for the clock time indicator, are displayed by pressing the button. Transmission mark TIMER and clock time indicator This transmission mark indicates when the The time setting for timer operation or the clock remote controller transmits signals to the indoor time is indicated.

  • Page 64: Indoor Unit Display & Unit Operation Panel

    FILE NO. SVM-15040-2 9-5. Indoor Unit Display & Unit Operation Panel This indoor unit can be operated with the unit operation panel or using remote control. Operational contents will be followed the one which was operated later. If change the set temperature with operation panel of unit, temperature indication will be changed, but the temperature display on the remote control will not change.

  • Page 65: Installation Procedure

    FILE NO. SVM-15040-2 10. INSTALLATION PROCEDURE 10-1. Installation Diagram of Indoor and Outdoor Units Do not allow the drain hose to get slack. Air filter Installation plate Cut the piping hole sloped slightly. 50 mm or more 50 mm or more Make sure to run the drain hose sloped downward.
  • Page 66 FILE NO. SVM-15040-2 10-2. Optional Parts, Accessories and Tools 10-2-1. Optional Installation Parts Part Parts name Code Q'ty Refrigerant piping Liquid side : ∅6.35 mm each Gas side : ∅9.52 mm (RAS-B10,13UFV1 Series) ∅12.70 mm (RAS-B18UFV1 Series) Pipe insulating material (polyethylene foam, 8 mm thick) Putty, PVC tapes each...
  • Page 67 FILE NO. SVM-15040-2 10-2-2. Accessory and installation parts Part Part Part Part name (Q’ty) Part name (Q’ty) Part name (Q’ty) Flat head wood screw ∅ 3.1 x 16 l x 2 Installation plate x 1 Remote control holder x 1 Filter (RB-A620DE) x 2 Wireless remote control x 1 Insulation sheet x 1...
  • Page 68 FILE NO. SVM-15040-2 10-2-3. Installation/Servicing Tools Changes in the product and components In the case of an air conditioner using R410A, in order to prevent any other refrigerant from being charged accidentally, the service port diameter of the outdoor unit control valve (3 way valve) has been changed. (1/2 UNF 20 threads per inch) •...
  • Page 69 FILE NO. SVM-15040-2 10-3. Indoor Unit Mounting the installation plate and screw position 10-3-1. Installation Place (Unit : mm) • A place which provides the spaces around the indoor unit as shown in the diagram. • A place where there are no obstacles near the air inlet and outlet. •...
  • Page 70 FILE NO. SVM-15040-2 2. Put water in the drain pan and make sure that the water is drained out of 10-3-3. How to Install Indoor Unit doors. 3. When connecting extension drain hose, insulate the connecting part of 1. Remove the air inlet grille. Open the air inlet grille and remove the strap. extension drain hose with shield pipe.
  • Page 71 FILE NO. SVM-15040-2 Mounting directly on the floor 1) Fix the leg of indoor unit on the fl oor with 2 mounting screws. 2) Fix the upper part of indoor unit on the wall with 4 mounting screws. For prevent dewfall (Floor installation) Wall burying mode Slit...
  • Page 72 FILE NO. SVM-15040-2 (Side view) (Front view) 70 or more Opening for receiver 800 or more Opening for receiver 20 to 30 Partition board Partition board 50 or more 50 or more 10-4. OUTDOOR UNIT • When using a multi-system outdoor unit refer to the installation manual 10-4-3.
  • Page 73 6. Open fully the valve stem of the packed valves (both gas and liquid 2. Prepare the power source for exclusive use with the air conditioner. sides). 7. Remove the charging hose from the service port. RAS-B10UFV-E1 RAS-B13UFV-E1 RAS-B18UFV-E1 Model 8. Securely tighten the caps on the packed valves.
  • Page 74 FILE NO. SVM-15040-2 OTHERS 10-5. OTHERS Unit B setup. 10-5-1. Gas Leak Test Press and hold MODE button for more than 20 seconds. When A setup changed to B setup : 5 beeps will sound and operation lamp blinks for 5 seconds. When B setup changed to A setup : 5 beep will sound.

  • Page 75: How To Diagnose The Trouble

    FILE NO. SVM-15040-2 11. HOW TO DIAGNOSE THE TROUBLE The pulse motor circuits are mounted to both indoor and outdoor units. Therefore, diagnose troubles according to the trouble diagnosis procedure as described below. (Refer to the check points in servicing written on the wiring diagrams attached to the indoor/outdoor units.) Table 11-1 Troubleshooting Procedure...
  • Page 76 FILE NO. SVM-15040-2 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.
  • Page 77 FILE NO. SVM-15040-2 < Discharging method for RAS-18N3AV2-E> 1. Remove the inverter cover (plating) by opening four mounting claws. 2. As shown below, connect the discharge resistance (approx. 100. 40W) or plug of the soldering iron to voltage between + – terminals of the electrolytic capacitor (500µF/400V or 760µF/400V) on P.C. board ("WARNING ELECTRIC SHOCK"...
  • Page 78 FILE NO. SVM-15040-2 11-1. First Confirmation 11-1-1. Confirmation of Power Supply Confirm that the power breaker operates (ON) normally. 11-1-2. Confirmation of Power Voltage Confirm that power voltage is AC 220–230–240 ± 10%. If power voltage is not in this range, the unit may not operate normally. 11-1-3.
  • Page 79 FILE NO. SVM-15040-2 11-2. Primary Judgment To diagnose the troubles, use the following methods. 1) Judgment by flashing LED of indoor unit 2) Self-diagnosis by service check remote controller 3) Judgment of trouble by every symptom Firstly use the method 1) for diagnosis. Then, use the method 2) or 3) to diagnose the details of troubles. 11-3.
  • Page 80 FILE NO. SVM-15040-2 11-4. Self-Diagnosis by Remote Controller (Check Code) 1. If the lamps are indicated as shown B to E in Table 11-3-1, execute the self-diagnosis by the remote controller. 2. When the remote controller is set to the service mode, the indoor controller diagnoses the operation condi- tion and indicates the information of the self-diagnosis on the display of the remote controller with the check codes.
  • Page 81 FILE NO. SVM-15040-2 11-4-2 Caution at Servicing 1. After using the service mode of remote controller finished, press the [ ] button to reset the remote controller to normal function. 2. After finished the diagnosis by the remote controller, turn OFF power supply and turn its ON again to reset the air conditioner to normal operation.
  • Page 82 FILE NO. SVM-15040-2 Block distinction Operation of diagnosis function Action and Judgment Check Check Display flashing Block Cause of operation conditioner code code error status Serial signal 1) Defective wiring of the Indoor unit Flashes when 1) to 3) The outdoor unit never and connecting connecting cable or operates...
  • Page 83 FILE NO. SVM-15040-2 Block distinction Operation of diagnosis function Action and Judgment Check Check Display flashing Block Cause of operation conditioner code code error status Outdoor P.C. Current on inverter circuit All OFF Flashes after 1. Remove connecting lead wire of the board is over limit in short time.
  • Page 84 FILE NO. SVM-15040-2 Block distinction Operation of diagnosis function Action and Judgment Check Check Display flashing Block Cause of operation conditioner code code error status Compressor drive output error. All OFF Flashes after 1. Check installation conditions such as (Relation of voltage, current error is detected packed valve opening, refrigerant 8 times*.
  • Page 85 FILE NO. SVM-15040-2 Block distinction Operation of diagnosis function Action and Judgment Check Check Display Block Cause of operation conditioner code code flashing error status Compressor does not rotate. All OFF Flashes after 1. Remove connecting lead wire of the Because of missed wiring, error is detected compressor, and operate again.
  • Page 86 FILE NO. SVM-15040-2 Block distinction Operation of diagnosis function Action and Judgment Check Check Display Block Cause of operation conditioner code code flashing error status Return signal of the outdoor Indoor unit Flashes when 1. . Check power supply (Rate +10%) operates error is detected unit has been sent when...
  • Page 87 FILE NO. SVM-15040-2 11-5. Judgment of Trouble by Every Symptom 11-5-1. Indoor Unit (Including Remote Controller) (1) Power is not turned on (Does not operate entirely) <Primary check> 1. Is the supply voltage normal? 2. Is the normal voltage provided to the outdoor unit? 3.
  • Page 88 FILE NO. SVM-15040-2 (3) Only the indoor motor fan does not operate <Primary check> 1. Is it possible to detect the power supply voltage (AC220–240V) between on the terminal block? 2. Does the indoor fan motor operate in cooling operation? (In heating operation, the indoor fan motor does not operate for approximately 10 minutes after it is turned on, to prevent a cold air from blowing in.) Turn off power...
  • Page 89 FILE NO. SVM-15040-2 Is it possible to Does check display Replace change airflow level remote on remote show high? to “HIGH”? Change the new PC Replace board. Does fan speed motor change? Fan motor operates normally. Is it possible to Does check cross-flow Replace bearing rotate cross-flow fan by...
  • Page 90 FILE NO. SVM-15040-2 (4) Indoor fan motor automatically starts to rotate by turning on power supply <Cause> The IC is built in the indoor fan motor. Therefore the P.C. board is also mounted to inside of the motor. If the P .C. board is soldered imperfectly or the IC is defective, the fan motor may automatically rotate by turning on power supply.
  • Page 91 FILE NO. SVM-15040-2 (5) Troubleshooting for remote control <Primary check> Check that A or B selected on the main unit is matched with A or B selected on the remote control. The unit does not beep at all. Push the [ ] button. Operation lamp on indoor unit is not indicated.
  • Page 92 FILE NO. SVM-15040-2 11-5-2. Wiring Failure (Interconnecting and Serial Signal Wire) (1) Outdoor unit does not operate 1) Is the voltage between of the indoor terminal block varied? Confirm that transmission from indoor unit to outdoor unit is correctly performed based upon the follow- ing diagram.
  • Page 93 FILE NO. SVM-15040-2 11-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E <Check procedure> Gas leakage, Discharge temp. error, disconnection of TS/TC gas leakage sensors (Check code 02, 1C) (Check code 03, 1E) Valve drive check Is coil of the pulse motor valve Set it correctly.
  • Page 94 FILE NO. SVM-15040-2 11-7. How to Diagnose Trouble in Outdoor Unit Check Power Supply (Voltage Rate ±10%) Turn OFF power supply. Remove connector of compressor. • Connect discharge Check 25A resistance (approx. 100Ω, fuse (F01) 40W) or soldering iron (plug) between +, – terminals of the electro- lytic capacitor (500µF or 760µF)
  • Page 95 FILE NO. SVM-15040-2 Does outdoor fan operate normally? Turn OFF power supply. Does compresser operate normally? Remove outdoor fan connector. Check winding resistance by ohmmeter are correct? Compressor Check rotor locking by rotate is normal with hand. Can it rotate? Turn OFF power supply.
  • Page 96 FILE NO. SVM-15040-2 11-8. How to Check Simply the Main Parts 11-8-1. How to Check the P.C. Board (Indoor Unit) (1) Operating precautions 1) When removing the front panel or the P .C. board, be sure to shut off the power supply breaker. 2) When removing the P .C.
  • Page 97 FILE NO. SVM-15040-2 (3) Check procedures Table 11-8-1 Procedure Check points Causes Turn off the power supply breaker Check whether or not the fuse (F01) Impulse voltage was applied or the and remove the P.C. board is blown. indoor fan motor short-circuited. assembly from electronic parts base.
  • Page 98 FILE NO. SVM-15040-2 11-8-2. P .C . Board Layout [1] Sensor characteristic table TD : Discharge temp. sensor TA : Room temp. sensor TC, TCJ : Heat exchanger temp. sensor TO : Outdoor temp. sensor TA, TC, TCJ, TO, TE, TS TE : Outdoor heat exchanger temp.
  • Page 99 FILE NO. SVM-15040-2 11-8-3. Indoor Unit (Other Parts) Part name Checking procedure Room temp. (TA) sensor Disconnect the connector and measure the resistance value with tester. Heat exchanger (TC) sensor (Normal temp.) Heat exchanger (TCJ)sensor Temperature 10°C 20°C 25°C 30°C 40°C Sensor TA, TC,TCJ (k.
  • Page 100 FILE NO. SVM-15040-2 11-8-5. Checking Method for Each Part Part name Checking procedure Electrolytic capacitor 1. Turn OFF the power supply breaker. (For boost, smoothing) 2. Discharge all three capacitors completely. 3. Check that safety valve at the bottom of capacitor is not broken. 4.
  • Page 101 FILE NO. SVM-15040-2 11-9. 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”...

  • Page 102: How To Replace The Main Parts

    FILE NO. SVM-15040-2 12. HOW TO REPLACE THE MAIN PARTS WARNING • Since high voltages pass through the electrical parts, turn off the power without fail before proceeding with the repairs. Electric shocks may occur if the power plug is not disconnected. •...
  • Page 103 FILE NO. SVM-15040-2 Part name Procedure Remarks Electrical parts 1) Remove screw for E-box cover. ② Box assembly (E-box) Tube TC sensor TCJ sensor 4) The screw for 1) Screw for E-box cover display base 3) Screw for earth-lead 2) Remove screw for drain guide. (4 pcs) 3) Remove screw for earth-lead.
  • Page 104 FILE NO. SVM-15040-2 Part name Procedure Remarks Electrical parts <How to arrange the lead> ② Display unit lead Box assembly Shown in the picture. (E-box) Louver motor lead Fan motor lead Earth-lead from fan motor base Damper motor lead Heat exchanger 1) Take off the pipe holder.
  • Page 105 FILE NO. SVM-15040-2 Part name Procedure Remarks Louver base 1) Remove screws for louver base. ⑤ Screws for louver base (2 pcs) assembly (2 pcs) 2) - ① Pull the upper part of the louver base to upward. ② ① 2) - ②...
  • Page 106 FILE NO. SVM-15040-2 Part name Procedure Remarks Turbo fan 1) Turn the flange nut (M10) in the ⑧ counter-clockwise direction and take it off. 2) Pull out the turbo fan from the fan motor shaft. <Attention for turbo fan assemble> The tightening torque of the flange nut is 5N·m.
  • Page 107 FILE NO. SVM-15040-2 Part name Procedure Remarks Fan motor 3) Remove the flange nut and turbo fan. ⑩ (refer to ⑧) 4) Remove screws for motor holder and lead cover. (refer to ⑨) – 107 –...
  • Page 108 FILE NO. SVM-15040-2 12-2. Microcomputer Part name Procedure Remarks Common procedure 1) Turn the power supply off to stop the Replace terminal block,  operation of air-conditioner. microcomputer ass’y and the P .C. board ass’y. 2) Remove the front panel. •...
  • Page 109 FILE NO. SVM-15040-2 12-3. Outdoor Unit (RAS-10N3AV2-E1, RAS-13N3AV2-E1) Part name Procedure Remarks  Common 1. Detachment procedure NOTE Upper cabinet Wear gloves for this job. Otherwise, you may injure your hands on the parts, etc. Waterproof cover 1) Stop operation of the air conditioner, and turn off the main switch of the breaker for air conditioner.
  • Page 110 FILE NO. SVM-15040-2 Part name Procedure Remarks Front cabinet 1. Detachment ‚ 1) Perform step 1 in  2) Remove the fixing screws (ST1TØ4 × 10L 2 pcs.) used to secure the front cabinet and inverter cover, the screws (ST1TØ4 ×...
  • Page 111 FILE NO. SVM-15040-2 Part name Procedure Remarks Inverter 1) Perform work of item 1 in ƒ  Inverter cover assembly 2) Remove screw (ST1TØ4 × 10L 2 pcs.) of the upper part of the front cabinet. P.C. board (Soldered surface) •...
  • Page 112 FILE NO. SVM-15040-2 Part name Procedure Remarks Control board 1. Disconnect the leads and connectors connected to assembly the other parts from the control board assembly. 1) Leads • 3 leads (black, white, orange) connected to terminal block. • Lead connected to compressor : Disconnect the connector (3P).
  • Page 113 FILE NO. SVM-15040-2 Part name Procedure Remarks Side cabinet 1. Side cabinet (right) … 1) Perform step 1 in ‚ and all the steps in ƒ 2) Remove the fixing screw (ST1TØ4 × 10L 4 pcs.) used for securing the side cabinet to the bottom plate and valve fixing panel.
  • Page 114 FILE NO. SVM-15040-2 Part name Procedure Remarks Compressor 1) Perform work of item 1 of  ‚ ƒ „ ‡ … 2) Extract refrigerant gas. 3) Remove the partition board. (ST1TØ4 × 10L 3 pcs.) 4) Remove the sound-insulation material. 5) Remove terminal cover of the compressor, and disconnect lead wire of the compressor Partition...
  • Page 115 FILE NO. SVM-15040-2 Part name Procedure Remarks Electronic ‰ 1. Detachment expansion valve 1) Perform step 1 in ‚ , all the steps in ƒ coil and 1 in … 2) Remove the coil by pull it upward. 2. Attachment 1) Insert a valve coil to value body by push it downward.
  • Page 116 FILE NO. SVM-15040-2 Part name Procedure Remarks TE sensor (outdoor heat exchanging temperature sensor) • Attachment Install the sensor onto the straight pipe part of the condenser Arrow D output pipe. Detail B Detail C Detail A Detail C for 10k Detail C for 13k TS sensor (Suction pipe temperature sensor) •...
  • Page 117 FILE NO. SVM-15040-2 Part name Procedure Remarks Replacement of 1) Cut the sensor 100 mm longer than old temperature sensor one. Cutting here Thermal for servicing only Connector sensor part 2) Cut the protective tube after pulling out it (200 mm). Common service 3) Move the protective tube toward the Cutting here...
  • Page 118 FILE NO. SVM-15040-2 12-3. Outdoor Unit (RAS-18N3AV2-E) Part name Procedure Remarks 1. Detachment Common procedure NOTE Wear gloves for this job. Otherwise, you may injure your hands on the parts, etc. 1) Stop operation of the air conditioner, and turn off the main switch of the breaker for air conditioner.
  • Page 119 FILE NO. SVM-15040-6 Part name Procedure Remarks 1. Detachment Front cabinet 1) Perform step 1 in 2) Remove the fixing screws (ST1TØ4 × 8L 2 pcs.) used to secure the front cabinet and inverter cover, the screws (ST1TØ4 × 8L 3 pcs.) used to secure the front cabinet at the bottom, and the fixing screws (ST1TØ4 ×...
  • Page 120 FILE NO. SVM-15040-6 Part name Procedure Remarks Inverter 1) Perform work of item 1 in assembly 2) Remove screw (ST1TØ4 × 8L 2 pcs.) of the upper part of the front cabinet. • If removing the inverter cover in this condition, P.C.
  • Page 121 FILE NO. SVM-15040-6 Part name Procedure Remarks Control board 1. Disconnect the leads and connectors connected to assembly the other parts from the control board assembly. 1) Leads CN603 • 3 leads (black, white, orange) connected to terminal block. CN601 CN600 CN701 CN703 •...
  • Page 122 FILE NO. SVM-15040-6 Part name Procedure Remarks 1. Side cabinet (right) Side cabinet 1) Perform step 1 in and all the steps in 2) Remove the fixing screw (ST1TØ4 × 8L 5 pcs.) used for securing the side cabinet to the bottom plate and valve fixing panel.
  • Page 123 FILE NO. SVM-15040-6 Part name Procedure Remarks Compressor 1) Perform work of item 1 of 2) Extract refrigerant gas. 3) Remove the partition board. (ST1TØ4 × 8L 3 pcs.) 4) Remove the sound-insulation material. 5) Remove terminal cover of the compressor, and disconnect lead wire of the compressor from the terminal.
  • Page 124 FILE NO. SVM-15040-6 Part name Procedure Remarks 1. Detachment Electronic expansion 1) Perform step 1 in , all the steps in valve coil 1 in Coil 2) Remove the coil by pulling it up from the anti-turn electronic control valve body. lock 2.
  • Page 125 FILE NO. SVM-15040-6 Part name Procedure Remarks TE sensor (Outdoor heat exchanging temperature sensor) • Attachment With the leads pointing downward and the sensor leads pointing in the direction shown in the figure, install the sensor onto the straight pipe part of the condenser output pipe. Detail C for RAS-18SAV-E TS sensor (Suction pipe temperature sensor) •...

  • Page 126: Exploded Views And Parts List

    LEAD COVER 43T22315 HORIZONTAL LOUVER 43T22314 BELL MOUTH ASSY 43T63333 DISPLAY BASE 43T44455 REFRIGERANT CYCLE ASSY 43T62339 TERMINAL COVER ASSY (FOR RAS-B10UFV-E1) 43T49340 PIPE HOLDER 43T44456 REFRIGERANT CYCLE ASSY 43T82316 PLATE MOUNTING (FOR RAS-B13UFV-E1) 43T66309 WIRELESS REMOTE CONTROLLER 43T44457 REFRIGERANT CYCLE ASSY...
  • Page 127 Location Part Description Description 43T60406 TERMINAL 3P 43T69865 PC BOARD ASSY,WRS-LED 43T50321 SENSOR;THERMOSTAT 43T6V567 PC BOARD (FOR RAS-B10UFV-E1) 43T50332 SENSOR:HEAT EXCHANGER 43T6V568 PC BOARD (FOR RAS-B13UFV-E1) 43T50333 SENSOR:HEAT EXCHANGER 43T6V569 PC BOARD (FOR RAS-B18UFV-E1) 43T62003 CORD CLAMP – 127 –...
  • Page 128 FILE NO. SVM-15040-7 13-3. Outdoor Unit (RAS-10,13N3AV2-E1) Location Part Location Part Description Description 43T00468 FRONT CABINET 43T46347 BODY PMV 43T00459 LEFT CABINET 43T63329 COIL PMV 43T42327 BASE PLATE ASSEMBLY 43T58309 REACTOR 43T00735 UPPER CABINET ASSEMBLY 43T20319 PROPELLER FAN 43T19364 FAN GUARD 43T21375 FAN MOTOR 43T00762...
  • Page 129 FILE NO. SVM-15040-7 13-4. Outdoor Unit (RAS-18N3AV2-E) Location Part Location Part Description Description 43T00468 FRONT CABINET 43T58306 REACTOR 43T00459 LEFT CABINET 43T20319 PROPELLER FAN 43T42327 BASE PLATE ASSEMBLY 43T21375 FAN MOTOR 43T00735 UPPER CABINET ASSEMBLY 43T47001 NUT FLANGE 43T19364 FAN GUARD 43T97001 43T00762 PACKED-VALVE COVER ASSEMBLY...
  • Page 130 FILE NO. SVM-15040-7 13-5. P.C. Board Layout (RAS-10, 13N3AV2-E1) Location Part Location Part Description Description HEATSINK FUSE 43T62351 43T60326 PC BOARD (RAS-10N3AV2-E1) TEMPERATURE SENSOR 43T6V572 43T50334 PC BOARD (RAS-13N3AV2-E1) SENSOR;HEAT EXCHANGE 43T6V573 43T50304 TERMINAL-5P BASE-PLATE-PC 43T62313 43T60392 – 130 –...
  • Page 131 FILE NO. SVM-15040-7 13-6. P.C. Board Layout (RAS-18N3AV2-E) Location Part Location Part Description Description 43T62320 HEATSINK 43T60377 TEMPERATURE SENSOR 43T69943 PC BOARD 43T50304 SENSOR;HEAT EXCHANGER 43T60392 TERMINAL-5P 43T62313 BASE-PLATE-PC 43T60326 FUSE – 131 –...
  • Page 132 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.

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