Toshiba RAS-15EKV-UL Service Manual
  1. Manuals
  2. Brands
  3. Toshiba Manuals
  4. Air Conditioner
  5. RAS-15EKV-UL
  6. Service manual
Toshiba RAS-15EKV-UL Service Manual

Toshiba RAS-15EKV-UL Service Manual

Indoor and outdoor unit air conditioner split tye
Hide thumbs Also See for RAS-15EKV-UL:
Table of Contents

Advertisement

Quick Links

SERVICE MANUAL

Indoor Unit
<High Wall, Heat Pump Type>
RAS-15EKV-UL
RAS-17EKV-UL
RAS-22EKV-UL
RAS-15EKV-UL
RAS-17EKV-UL
RAS-22EKV-UL
R410A
FILE NO. SVM-13070-3
SPLIT TYPE
Outdoor Unit
<Heat Pump Type>
RAS-15EAV-UL
RAS-17EAV-UL
RAS-22EAV-UL
RAS-15EAV2-UL
RAS-17EAV2-UL
RAS-22EAV2-UL
Revised on Jun, 2014

Advertisement

Table of Contents
loading

Related Manuals for Toshiba RAS-15EKV-UL

Summary of Contents for Toshiba RAS-15EKV-UL

  • Page 1: Service Manual

    FILE NO. SVM-13070-3 SERVICE MANUAL SPLIT TYPE Indoor Unit Outdoor Unit <High Wall, Heat Pump Type> <Heat Pump Type> RAS-15EKV-UL RAS-15EAV-UL RAS-17EKV-UL RAS-17EAV-UL RAS-22EKV-UL RAS-22EAV-UL RAS-15EKV-UL RAS-15EAV2-UL RAS-17EKV-UL RAS-17EAV2-UL RAS-22EKV-UL RAS-22EAV2-UL R410A Revised on Jun, 2014...

  • Page 2: Table Of Contents

    FILE NO. SVM-13070-2 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-13070 1. SAFETY PRECAUTIONS Installing, staring up, and servicing air-conditioning equipment can be hazardous due to system pressures, electrical components, and equipment location (roofs, elevated structures, etc.). Only trained, qualified installers and service mechanics should install, start-up, and service this equipment. Untrained personnel can perform basic maintenance functions such as cleaning coils.
  • Page 4 FILE NO. SVM-13070 CAUTION CAUTION • Exposure of unit to water or other moisture before installation could result in electric shock. Do not store it in a wet basement or expose to rain or water. • After unpacking the unit, examine it carefully for possible damage. Report any damages to your distributor. Do not install in a place that can increase the vibration of the unit.
  • Page 5 FILE NO. SVM-13070 DANGER FOR USE BY QUALIFIED PERSONS ONLY. • • TURN OFF MAIN POWER SUPPLY BEFORE.ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE ALL POWER SWITCHES ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK. • CONNECT THE CONNECTING CABLE CORRECTLY. IF THE CONNECTING CABLE IS CONNECTED WRONGLY, ELECTRIC PARTS MAY BE DAMAGED.

  • Page 6: Specifications

    FILE NO. SVM-13070 2. SPECIFICATIONS 2-1. Specifications (RAS-15,17EKV-UL / RAS-15,17EAV-UL , RAS-15,17EKV-UL / RAS-15,17EAV2-UL) Unit model Indoor RAS- 1 5 EKV- U L R AS- 1 7E KV- U L Outdoor RAS- 1 5 EAV- UL, RAS-15EAV2-UL RAS- 1 7EAV- UL, RAS-17EAV2-UL Cooling capacity (Btu/h) 15000...
  • Page 7 FILE NO. SVM-13070 (RAS-22EKV-UL / RAS-22EAV-UL, RAS-22EKV-UL / RAS-22EAV2-UL) Unit model Indoor RAS- 2 2 E KV- U L Outdoor RAS- 2 2 EAV- UL, RAS-22EAV2-UL Cooling capacity (Btu/h) 21400 Cooling capacity range (Btu/h) 4100-22500 Heating capacity (Btu/h) 23200 Heating capacity range (Btu/h) 3450-24350 1Ph, 60Hz, 208V/230V...

  • Page 8: Operation Characteristic Curve

    (DB26.7°C/WB19.4°C) Voltage: 230V Indoor Air-Flow Volume: High Pipe Length: 25 ft (7.5m) Capacity Ratio: 100% = Capacity Ratio: 100% = 18000 Btu/h (RAS-15EKV-UL) 15000 Btu/h (RAS-15EKV-UL) 20200 Btu/h (RAS-17EKV-UL) 16200 Btu/h (RAS-17EKV-UL) 21400 Btu/h (RAS-22EKV-UL) 23200 Btu/h (RAS-22EKV-UL) 90 91 93 95 97 99 100 102 104 106 108 109 111 113 115...

  • Page 9: Refrigerant R410A

    FILE NO. SVM-13070 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-13070 Table 3-2-1 Thicknesses of annealed copper pipes Thickness in. (mm) Nominal diameter (in.) Outer diameter (mm) R410A 6.35 0.0315 (0.80) 0.0315 (0.80) 9.52 0.0315 (0.80) 0.0315 (0.80) 0.0315 (0.80) 0.0315 (0.80) 12.70 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-13070 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-13070 Table 3-2-6 Flare and flare nut dimensions for R22 Dimension in. (mm) Nominal Outer diameter Thic kness Flare nut width diameter (mm) in. (mm) in. (mm) 6.35 0.0315 (0.8 ) 0.354 (9.0) 0.669 (17) 0.362 (9.2) 0.256 (6.5) 0.512 (13) 9.52 0.0315 (0.8 ) 0.512 (13.0)
  • Page 13 FILE NO. SVM-13070 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 ∅...

  • Page 14: Recharging Of Refrigerant

    FILE NO. SVM-13070 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 −...
  • Page 15 FILE NO. SVM-13070 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-13070 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-13070-2 4. CONSTRUCTION VIEWS 4-1. Indoor Unit 41-5/16(1050) Unit : Inch (mm) Heat exchanger Grille Inlet Air inlet Air Þ lter 8-15/16(228) Front panel Knockout for leftward Knockout for rightward piping piping 1-15/16(50) 1-15/16(50) Air outlet Knockout for bottom leftward piping 3-1/16(78) 2-13/16(72) 2-13/16(72)

  • Page 18: Outdoor Unit

    FILE NO. SVM-13070-2 4-2. Outdoor Unit Unit : Inch (mm) 4-1/4 (108) 4-15/16 (125) Ø1 (Ø25) Water Drain Outlet 23-5/8 (600) 1-31/32 (50) R19/32 1-27/64 (36) (R15) Ø1/4 Hole (Ø6) Hole R19/32 (R15) 1-27/64 (36) R7/32 Ø7/16x9/16 Oval-Hole (R5.5) 1-31/32 (50) (Ø11x14) Oval-Hole Ø1/4 Hole 23-5/8 (600)

  • Page 19: Wiring Diagram

    FILE NO. SVM-13070 5. WIRING DIAGRAM 5-1. RAS-15,17,22EKV-UL / RAS-15,17,22EAV-UL – 19 –...
  • Page 20 FILE NO. SVM-13070 5-2. RAS-15,17,22EKV-UL / RAS-15,17,22EAV2-UL – 20 –...

  • Page 21: Specifications Of Electrical Parts

    FILE NO. SVM-13070 6. SPECIFICATIONS OF ELECTRICAL PARTS 6-1. Indoor Unit Parts name Type Specifications ICF-340U30-2 DC340V, 30W Fan motor (for indoor) ( − ) Ω Room temp. sensor (TA-sensor) at 25°C − Heat exchanger temp. sensor (TC-sensor) 10kΩ at 25°C Louver motor Output (Rated) 1W, 12 poles, DC12V MSBPC20F04...

  • Page 22: Refrigerant Cycle Diagram

    FILE NO. SVM-13070 7. REFRIGERANT CYCLE DIAGRAM 7-1. Refrigerant Cycle Diagram RAS-15,17EKV-UL / RAS-15,17EAV-UL, RAS-15,17EKV-UL / RAS-15,17EAV2-UL T1 Temp. measurement INDOOR UNIT Indoor heat exchanger Max. : 66ft (20m) Cross flow fan Min. : 6.6ft (2m) Chargeless : 50ft (15m) Pressure measurement Deoxidized copper pipe Charge : 0.22oz/ft (20g/m)
  • Page 23 FILE NO. SVM-13070 RAS-22EKV-UL / RAS-22EAV-UL, RAS-22EKV-UL / RAS-22EAV2-UL T1 Temp. measurement INDOOR UNIT Indoor heat exchanger Max. : 66ft (20m) Cross flow fan Min. : 6.6ft (2m) Chargeless : 50ft (15m) Pressure measurement Deoxidized copper pipe Charge : 0.22oz/ft (20g/m) Gauge attaching port Outer dia.
  • Page 24 FILE NO. SVM-13070 7-2. Op eration Data <Cooling> Tempeature Model name Standard Heat exchanger Indoor Outdoor Compressor condition [°F (°C)] RAS- pressure pipe temp. fan mode fan mode revolution Indoor Outdoor P [psi (MPa)] T1 [°F (°C)] T2 [°F (°C)] (rps) 80/67 98/75...

  • Page 25: Control Block Diagram

    FILE NO. SVM-13070 8. CONTROL BLOCK DIAGRAM 8-1. Indoor Unit Indoor Unit Control Unit M.C.U. Louver Functions Motor Heat Exchanger Sensor (Tc) • Cold draft preventing Function Room Temperature Sensor (Ta) Louver Motor • 3-minute Delay at Restart for Compressor Drive Control Infrared Rays Signal Receiver •...
  • Page 26 FILE NO. SVM-13070 8-2. Outdoor Unit (Inverter Assembly) – 26 –...

  • Page 27: Operation Description

    FILE NO. SVM-13070 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 28 FILE NO. SVM-13070 9-2. Operation Description 1. Basic operation ......................29 1. Operation control ....................29 2. Cooling/Heating operation ..................30 3. AUTO operation ..................... 30 4. DRY operation ......................30 2. Indoor fan motor control ..................... 31 3. Outdoor fan motor control ................... 33 4.

  • Page 29: Basic Operation

    FILE NO. SVM-13070 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 as shown in the below. 2) A signal is sent by ON button of the remote controller.

  • Page 30: Cooling/Heating Operation

    FILE NO. SVM-13070 Item Operation flow and applicable data, etc. Description 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 31: Indoor Fan Motor Control

    *5 : Fan speed = [(M+) –L] x 1/4 + L +2.0(+1.0) +1.0 (+0.5) (Linear approximation L(W6) from M+ and L) (Table 1) Indoor fan air flow rate RAS-15EKV-UL RAS-17EKV-UL, RAS-22EKV-UL Fan speed COOL HEAT level Fan speed Air flow rate...
  • Page 32 FILE NO. SVM-13070 Item Operation flow and applicable data, etc. Description 1) When setting the fan speed to L, 2. Indoor fan <In heating operation> L+, M, M+ or H on the remote motor control controller, the operation is per- formed with the constant speed HEAT ON shown in Fig.

  • Page 33: Outdoor Fan Motor Control

    FILE NO. SVM-13070 Item Operation flow and applicable data, etc. Description The blowing air volume at the outdoor unit side is controlled. 1) The operation command sent 3. Outdoor fan from the remote controller is motor control Receiving the operation command from the controller of processed by the indoor unit indoor unit, the controller of outdoor unit controls fan speed.

  • Page 34: Capacity Control

    FILE NO. SVM-13070 Item Operation flow and applicable data, etc. Description The cooling or heating capacity depending on the load is 1) The difference between set 4. Capacity adjusted. temperature on remote controller control (Ts) and room temperature (Ta) According to difference between the setup value of tempera- is calculated.

  • Page 35: Release Protective Control By Temperature Of Indoor Heat Exchanger

    FILE NO. SVM-13070 Item Operation flow and applicable data, etc. Description 1) When temperature of the indoor 6. Release protective <In cooling/dry operation> heat exchanger drops below 41°F control by tempera- (Prevent-freezing control for indoor heat exchanger) (5°C), the compressor speed is ture of indoor heat In cooling/dry operation, the sensor of indoor heat reduced.

  • Page 36: Defrost Control (Only In Heating Operation)

    FILE NO. SVM-13070 Item Operation flow and applicable data, etc. Description (This function removes frost adhered to the outdoor The necessity of defrost operation is 7. Defrost control heat exchanger.) detected by the outdoor heat exchanger (Only in heating temperature. The conditions to detect the operation) The temperature sensor of the outdoor heat ex- necessity of defrost operation differ in A,...

  • Page 37: Louver Control

    FILE NO. SVM-13070 Item Operation flow and applicable data, etc. Description This function controls the air direction of the indoor unit. 8. Louver control 1) Louver • The position is automatically controlled according to the operation position mode (COOL/HEAT). • The set louver position is stored in memory by the microcomputer, and the louver returns to the stored position when the next operation is performed.

  • Page 38: Eco Operation

    FILE NO. SVM-13070 Item Operation flow and applicable data, etc. Description 9. 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 1.0°F (0.5ºC) per hour This function operates the air conditioner with the difference up to 3.5°F (2°C) starting from the between the set and the room temperature as shown in the...

  • Page 39: Temporary Operation

    FILE NO. SVM-13070 Item Operation flow and applicable data, etc. Description Pressing [RESET] button starts the temporary opera- 1) When pressing [RESET] button, the 10. Temporary tion of [AUTO] operation. When keeping [RESET] temporary [AUTO] operation starts. operation button pressed for 10 seconds or more, the temporary 2) When keeping [RESET] button pressed [COOL] operation is performed.

  • Page 40: Pulse Modulating Valve (P.m.v.) Control

    FILE NO. SVM-13070 Item Operation flow and applicable data, etc. Description This function controls throttle amount of the 1) When starting the operation, move the 12. Pulse refrigerant in the refrigerating cycle. valve once until it fits to the stopper. Modulating (Initialize) valve (P.M.V.)

  • Page 41: Self-Cleaning Function

    FILE NO. SVM-13070 Item Operation flow and applicable data, etc. Description 13. 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 42: File No. Svm

    FILE NO. SVM-13070 Item Operation flow and applicable data, etc. Description • Self-Cleaning diagram 13. Self-Cleaning function Operation display FCU fan rpm is depend on presetting. (500RPM) OPEN (12.7º) FCU louver OPEN CLOSE ON or OFF ON or OFF Timer display depend on presetting of timer function.

  • Page 43: Remote-A Or B Selection

    FILE NO. SVM-13070 Item Operation flow and applicable data, etc. Description J201 PCB NO : WP-020 PCB NO : MCC-5045 PCB NO : MCC-5046 14. Remote-A or B Setting the remote controller 1. Purpose selection To separate using of remote control for each indoor This operation is to operate only one unit in case of 2 air conditioner are installed nearly.

  • Page 44: Quiet Mode

    FILE NO. SVM-13070 Item Operation flow and applicable data, etc. Description 15. 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 45: Hi-Power Mode

    FILE NO. SVM-13070 Item Operation flow and applicable data, etc. Description 18. Hi-POWER ([Hi-POWER] button on the remote controller Mode is pressed) When [Hi-POWER] button is pressed while the indoor ∗ The Hi-POWER operation will be cancelled unit is in Auto, Cooling or Heating operation, Hi- when press [Hi-POWER] button again.

  • Page 46: Auto Restart Function

    FILE NO. SVM-13070 9-3. Auto Restart Function (Default setting from factory is ON). 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 47: How To Set The Auto Restart Function

    FILE NO. SVM-13070 9-3-2. How to Set the Auto Restart Function To set Auto Restart Function, proceed as follows: 1. The power supply to the unit must be ON ; The function will not set or reset if the power supply is OFF. 2.

  • Page 48: Parts Name Of Remote Controller

    FILE NO. SVM-13070 9-4. Remote control and Its functions 9-4-1. Parts name of remote controller Infrared signal emitter 1 1 1 1 Start/Stop button Mode select button (MODE) Temperature button (TEMP) Fan speed button (FAN Swing louver button (SWING) Set louver button (FIX) PRESET On timer button (ON) TEMP...
  • Page 49 FILE NO. SVM-13070 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 50 FILE NO. SVM-13070 9. 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 51: Name And Functions Of Indications On Remote Controller

    FILE NO. SVM-13070 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 52: Installation Procedure

    FILE NO. SVM-13070-2 10. INSTALLATION PROCEDURE 10-1. Installation Diagram of Indoor and Outdoor Units For the rear left and left piping Hook Installation Air inlet grille Wall plate Insert the cushion between the indoor unit and wall, and tilt the indoor unit for better operation.
  • Page 53 FILE NO. SVM-13070-2 10-2. Installation 10-2-1. Field supplied installation part Part Parts name Q'ty Code Refrigerant piping Liquid side : ∅1/4 in. (∅ 6.35 mm) each Gas side ∅ 3/8 in. (∅ 12.70 mm) Pipe insulating material (polyethylene foam, 5/16 in. (8 mm) thick) Putty, PVC tapes each <Fixing bolt arrangement of outdoor unit>...
  • Page 54 FILE NO. SVM-13070-2 10-2-2. Accessory and installation parts Part Part Part Part name (Q’ty) Part name (Q’ty) Part name (Q’ty) Mounting screw ∅4 x 25 s x 6 Installation plate x 1 Remote control holder x 1 Flat head wood screw ∅3.1 x 16 s x 2 Toshiba New IAQ filter (L) x 1 Wireless remote control x 1...

  • Page 55: Installation/Servicing Tools

    FILE NO. SVM-13070 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 56: Installation Location

    FILE NO. SVM-13070-2 10-3. Outdoor Unit CAUTION 10-3-1. Installation Location 1. Install the outdoor unit in a location where there • A location which provides enough spaces around are no obstructions near its air intake or air outlet. the outdoor unit as shown in the diagram above. 2.

  • Page 57: High

    FILE NO. SVM-13070-2 10-3-4. Electrical Work Outer dia. of copper pipe Tightening torque Ø1/4 in. (Ø6.35 mm) 10 to 13 lbf.ft (14 to 18 N·m) WARNING Ø3/8 in. (Ø12.70 mm) 37 to 46 lbf.ft (50 to 62 N·m) ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal Tightening torque for connection of flare pipe injury or death.
  • Page 58 FILE NO. SVM-13070-2 Stripping length of the Power supply cord Lock nut and Interconnecting cable Valve cover Conduit plate Terminal block Connector Interconnecting cable Power supply cord Fig. 10-3-8 Fig. 10-3-6 CAUTION Wrong wiring connection may cause some Unit : inch (mm) •...

  • Page 59: Indoor Unit

    CAUTION FILE NO. SVM-13070-2 10-4. Indoor Unit NOTE : • When drilling a wall that contains a metal lath, 10-4-1. Installation Location wire lath or metal plate, be sure to use a pipe hole • A location which provides clearances around the brim ring sold separately.

  • Page 60: Wiring Connection

    FILE NO. SVM-13070-2 3/16 in. (5 mm) dia. hole CAUTION CAUTION • Be sure to refer to the system wiring diagram located inside the front panel. 7 Mounting screw Ø5/32 in. x 1 in. • Check local electrical codes and also any ( ∅...
  • Page 61 FILE NO. SVM-13070-2 10-4-3. How to connect remote controller for wire operation> (Optional) 70 mm * Wire size 28-22AWG Indoor unit or 0.08-0.32 mm Outer diameter not over 4.7 mm, control wire length 30 m. or less. 5 mm Control wire Control wire out position Remote controller Control wire...
  • Page 62 FILE NO. SVM-13070-2 INSULATE BOTH LINES EXPLOSION HAZARD WARNING : Do not install batteries for hard wire installation Rear right Rear left Control wire Control wire Bottom left Screw (∅3.1 x 16L) for Remote controller hang remote controller Left hanger Bottom right Remote controller Wall...
  • Page 63 FILE NO. SVM-13070-2 <Left-hand connection with piping> How to fix the drain cap 1) Insert a hexagon wrench 3/16 in. (4 mm) Bend the connecting pipe so that it is laid within 1-5/8 in. in the center head of the cap. (43 mm) above the wall surface.

  • Page 64: Indoor Unit Fixing

    FILE NO. SVM-13070-2 10-3-6. Indoor Unit Fixing 10-3-7. Drainage 1. Pass the pipe through the hole in the wall and 1. Run the drain hose at a downward sloped angle. hook the indoor unit on the installation plate at NOTE : the upper hook.

  • Page 65: Remote Control

    FILE NO. SVM-13070-2 Remote control Remote control A-B selection • Place the remote control away from obstacles (such In case of two systems operating nearby, follow the as curtain) that may block the signal coming form the instructions below to set the remote control to operate remote control.
  • Page 66 FILE NO. SVM-13070-2 10-5. EVACUATING CAUTION 5 IMPORTANT POINTS FOR PIPING WORK. 10-5-1. Evacuating • After the piping has been connected to the indoor unit, (1) Take away dust and moisture (inside of the you vacuum both units as once. connecting pipes).

  • Page 67: System Requirements

    FILE NO. SVM-13070-2 Refrigerant charge 10-6. SYSTEM REQUIREMENTS Unit : ft (m) 10-6-1. Piping (Field supplied) Refrigerant charge Minimum refrigerant line length between the outdoor Length of refrigerant Pipe Additional refrigerant • connected to Indoor/ unit and indoor unit is outdoor unit 6.6ft.

  • Page 68: Auto Restart Setting

    FILE NO. SVM-13070-2 10-7. OTHERS 10-7-3. Auto Restart Setting This product is designed so that after a power failure 10-7-1. Gas Leak Test it can restart automatically in the same operating mode as before the power failure. Valve cover Information Check places for flare nut connection The product was shipped with Auto Restart function...

  • Page 69: How To Diagnose The Trouble

    FILE NO. SVM-13070 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 First Confirmation...
  • Page 70 FILE NO. SVM-13070 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.

  • Page 71: First Confirmation

    FILE NO. SVM-13070 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 208–230 ± 10%. If power voltage is not in this range, the unit may not operate normally. 11-1-3.

  • Page 72: Primary Judgment

    FILE NO. SVM-13070 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 73: Self-Diagnosis By Remote Controller (Check Code)

    FILE NO. SVM-13070 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 condition and indicates the information of the self-diagnosis on the display of the remote controller with the check codes.
  • Page 74 FILE NO. SVM-13070-3 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 75 FILE NO. SVM-13070-3 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 76: Pipe Temp

    FILE NO. SVM-13070-3 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 77 FILE NO. SVM-13070-3 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 and frequency is abnormal)
  • Page 78 FILE NO. SVM-13070-3 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 79: Judgement Of Trouble By Every Symptom

    FILE NO. SVM-13070 11-5. Judgement of Trouble by Every Symptom 11-5-1. Indoor unit (Including remote controller) Operation (1) Indoor unit is not operated. Check Item Considerable principle cause Turn off power supply once, and Measures 5 second later, turn it on again. Item by symptoms Is OPERATION indicator flashing? Is it possible to turn on...
  • Page 80 FILE NO. SVM-13070 (3) Only the indoor motor fan does not operate <Primary check> 1. Is it possible to detect the power supply voltage (AC208–230V) 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 81 FILE NO. SVM-13070 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 82 FILE NO. SVM-13070 (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 83 FILE NO. SVM-13070 (5) Troubleshooting for remote controller <Primary check> Check that A or B selected on the main unit is matched with A or B selected on the remote controller. The unit does not beep at all. Push the [ ] button.
  • Page 84 FILE NO. SVM-13070 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 85 FILE NO. SVM-13070 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 86: How To Diagnose Trouble In Outdoor Unit

    FILE NO. SVM-13070 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 failure? (plug) between +, –...
  • Page 87 FILE NO. SVM-13070 Does outdoor fan operate normally? Turn OFF power supply. Does compresser operate normally? Remove connector CN300 of outdoor fan motor. 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 88: How To Check Simply The Main Parts

    FILE NO. SVM-13070 11-8. How to Check Simply the Main Parts (2) Inspection procedures 1) When a P.C. board is judged to be defective, 11-8-1. How to check the P.C. board (Indoor unit) check for disconnection, burning, or discolora- tion of the copper foil pattern or this P.C. board. (1) Operating precautions 2) The P.C.
  • Page 89 FILE NO. SVM-13070 11-8-2. P.C. Board Layout [1] Sensor characteristic table : Discharge temp. sensor : Room temp. sensor TC, TCJ : Heat exchanger temp. sensor : Outdoor temp. sensor TA, TC, TCJ, TO, TE, TS : Outdoor heat exchanger temp. sensor : Suction temp.
  • Page 90 FILE NO. SVM-13070 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.) Temperature 10°C 20°C 25°C 30°C 40°C Sensor TA, TC (kΩ) 20.7 12.6 10.0...
  • Page 91 FILE NO. SVM-13070 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 92 FILE NO. SVM-13070 11-9. How to Simply Judge Whether Outdoor Fan Motor in Good or Bad 1. Symptom • Outdoor fan motor does not rotate. • Outdoor fan motor stops within several 10 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 93: How To Replace The Main Parts

    FILE NO. SVM-13070 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 94 FILE NO. SVM-13070 Part name Procedures Remarks Front panel 4) Press "PUSH" part under the front panel  and remove hooks of the front panel from the installation plate. Installation plate Front panel Press 5) Remove the front panel fixing screws. (4 pcs.) 6) Take off four hooks of panel from rear side.
  • Page 95 FILE NO. SVM-13070 Part name Procedures Remarks Electric parts ‚ 1) Remove screw of earth lead attached to the box assembly end plate of the evaporator. 2) Remove the lead wire cover, and remove connector for the fan motor and connec- tor for the louver motor from the electric parts box assembly.
  • Page 96 FILE NO. SVM-13070 Part name Procedures Remarks ƒ Horizontal louver 1) Remove shaft of the horizontal louver from the back body. (First remove the left shaft, and then remove other shafts while sliding the horizontal louver leftward.) „ Evaporator 1) Follow to the procedure in the item ‚...
  • Page 97 FILE NO. SVM-13070 Part name Procedures Evaporator 4) Remove three fixing screw at the right (Heat exchanger) side of the heat exchanger, and separate the heat exchanger from the back body. (Figure 4, 5) <How to assemble the heat exchanger> Heat exchanger assembly on the back body, One screw and secure it using the fixing screw without...
  • Page 98 FILE NO. SVM-13070 Part name Procedures Remarks Fan motor 1) Follow to the procedure till item „ 2) Loosen the set screw of the cross flow fan. 3) Remove two fixing screws of the motor cover and them remove the motor cover. 4) Remove two more fixing screws of the motor band and remove the motor band.
  • Page 99 FILE NO. SVM-13070 Part name Procedures Remarks Cross flow fan <Caution at reassembling> 1) To incorporate the fan motor incorporate the motor into the position in the following figure, and then install the fan motor. • Install the cross flow fan so that the right end of the 1st joint from the right of the cross flow fan is set keeping 5.0 mm from closed wall of the main unit.
  • Page 100 FILE NO. SVM-13070 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 101 FILE NO. SVM-13070 12-3. Outdoor Unit Part name Procedure Remarks  Common 1. Detachment 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 102 FILE NO. SVM-13070 Part name Procedure Remarks Front cabinet ‚ 1. Detachment 1) Perform step 1 in  2) Remove the fixing screws (screw 2 pcs.) used to secure the front cabinet and inverter cover, the screws (screw 3 pcs.) used to secure the front cabinet at the bottom, the screw used to secure the front and side cabinet (Right), and the...
  • Page 103 FILE NO. SVM-13070 Part name Procedure Remarks Inverter 1) Perform work of item 1 in ƒ  Inverter cover assembly 2) Remove screw (screw 2 pcs.) of the upper part of the front cabinet. P.C. board (Soldered surface) • If removing the inverter cover in this condition, P .C.
  • Page 104 FILE NO. SVM-13070 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 CN603 terminal block. CN601 CN600 CN701...
  • Page 105 FILE NO. SVM-13070 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 used to secure the side cabinet and heat exchanger. 3) Remove the fixing screw (screw 2 pcs.) used to secure the plate conduit and side cabinet.
  • Page 106 FILE NO. SVM-13070 Part name Procedure Remarks Compressor 1) Perform work of item 1 of ‡  ‚ ƒ „ … 2) Extract refrigerant gas. 3) Remove the partition board. (screw 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 107 FILE NO. SVM-13070 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 108 FILE NO. SVM-13070 Part name Procedure Remarks TE sensor (outdoor heat exchanging temperature sensor) • Attachment Install the sensor onto the straight pipe part of the condenser output pipe. Detail C TS sensor (Suction pipe temperature sensor) • Attachment Install the senser onto the straight pipe part of the suction pipe.

  • Page 109: Exploded Views And Parts List

    13. EXPLODED VIEWS AND PARTS LIST 13-1. Indoor Unit (E-Part) Location Part Location Part Description Description 43T50327 SENSOR HEAT EXCHANGER 43T69856 PC BOARD (RAS-15EKV-UL) 43T60402 TERMINAL:3P 43T69857 PC BOARD (RAS-17EKV-UL) 43T50325 TEMPERATURE SENSOR 43T69858 PC BOARD (RAS-22EKV-UL) 43T62003 CORD CLAMP...
  • Page 110 FILE NO. SVM-13070 13-2. Indoor Unit Location Part Location Part Description Description 43T00052 PANEL ASSY, SERVICE 43T39022 BAND, MOTOR, RIGHT UP 43T09492 GRILLE OF AIR INLET 43T39023 BAND,MOTOR, RIGHT DOWN 43T03014 BODY ASSY, BACK 43T44030 EVAPORATOR ASSY 43T80331 FILTER-AIR 43T19333 HOLDER, SENSOR 43T09040 LOUVER, HORIZONTAL...
  • Page 111 FILE NO. SVM-13070 13-3. Outdoor Unit (RAS-15,17,22EAV-UL) Location Part Location Part Description Description 43T00535 FRONT CABINET 43T58306 REACTOR 43T00459 LEFT CABINET 43T20319 PROPELLER FAN 43T42327 BASE PLATE ASSEMBLY 43T21419 FAN-MOTOR 43T00452 UPPER CABINET 43T47001 NUT FLANGE 43T19342 WIRE GUARD 43T97001 43T00540 PACKED VALVE COVER 43T49335...
  • Page 112 FILE NO. SVM-13070 13-4. Outdoor Unit (RAS-15,17,22EAV2-UL) Location Part Location Part Description Description 43T00535 FRONT CABINET 43T58306 REACTOR 43T00459 LEFT CABINET 43T20319 PROPELLER FAN 43T42353 BASE PLATE ASSEMBLY 43T21419 FAN-MOTOR 43T00452 UPPER CABINET 43T47001 NUT FLANGE 43T19342 WIRE GUARD 43T97001 43T00540 PACKED VALVE COVER 43T49335...
  • Page 113 FILE NO. SVM-13070 13-5. P.C. Board Layout (RAS-15,17,22EAV-UL) Location Part Location Part Description Description 43T62320 HEATSINK (RAS-15,17EAV-UL) 43T60403 FUSE 43T62331 HEATSINK (RAS-22EAV-UL) 43T50328 TEMPERATURE SENSOR 43T6V426 PC-BOARD (RAS-15EAV-UL) 43T62313 BASE-PLATE-PC 43T6V427 PC-BOARD (RAS-17EAV-UL) 43T50329 SENSOR,HEAT EXCHANGER 43T6V428 PC-BOARD (RAS-22EAV-UL) 43T50330 SENSOR,HEAT EXCHANGER 43T60404 TERMINAL-5P...
  • Page 114 FILE NO. SVM-13070 13-6. P.C. Board Layout (RAS-15,17,22EAV2-UL) Location Part Location Part Description Description 43T62320 HEATSINK (RAS-15,17EAV2-UL) 43T60403 FUSE 43T62331 HEATSINK (RAS-22EAV2-UL) 43T50328 TEMPERATURE SENSOR 43T6V423 PC-BOARD (RAS-15EAV2-UL) 43T62313 BASE-PLATE-PC 43T6V424 PC-BOARD (RAS-17EAV2-UL) 43T50329 SENSOR,HEAT EXCHANGER 43T6V425 PC-BOARD (RAS-22EAV2-UL) 43T50330 SENSOR,HEAT EXCHANGER 43T60404 TERMINAL-5P...
  • Page 115 FILE NO. SVM-03005 TOSHIBA CARRIER (THAILAND) CO.,LTD. 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND. – 56 –...

This manual is also suitable for:

Ras-17eav-ulRas-22ekv-ulRas-15eav-ulRas-22eav-ulRas-15eav2-ulRas-17eav2-ul ... Show all

Table of Contents