Toshiba RAS-25PAVPG-ND Service Manual
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Toshiba RAS-25PAVPG-ND Service Manual

Toshiba RAS-25PAVPG-ND Service Manual

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FILE NO. SVM-17050

SERVICE MANUAL

SPLIT TYPE
Indoor Unit
Outdoor Unit
<High Wall, Heat Pump Type>
<Heat Pump Type>
RAS-25PKVPG-ND / RAS-25PAVPG-ND
RAS-35PKVPG-ND / RAS-35PAVPG-ND
R32
September, 2017

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Summary of Contents for Toshiba RAS-25PAVPG-ND

  • Page 1: Service Manual

    FILE NO. SVM-17050 SERVICE MANUAL SPLIT TYPE Indoor Unit Outdoor Unit <High Wall, Heat Pump Type> <Heat Pump Type> RAS-25PKVPG-ND / RAS-25PAVPG-ND RAS-35PKVPG-ND / RAS-35PAVPG-ND September, 2017...

  • Page 2: Table Of Contents

    FILE NO. SVM-17050 CONTENTS 1. SAFETY PRECAUTIONS ................3 2. SPECIFICATIONS ..................6 3. REFRIGERANT R32 ................. 8 4. CONSTRUCTION VIEWS ................ 16 5. WIRING DIAGRAM .................. 18 6. SPECIFICATIONS OF ELECTRICAL PARTS ......... 19 7. REFRIGERANT CYCLE DIAGRAM ............20 8.

  • Page 3: Safety Precautions

    FILE NO. SVM-17050 1. SAFETY PRECAUTIONS Read the precautions in this manual This appliance is fi lled with R32. carefully before operating the unit. (Flammable Material) Information included in the Operation Service personnel should be handing this equipment Manual and/or Installation Manual. with reference to the Installation Manual.
  • Page 4 FILE NO. SVM-17050 DANGER • ASK AN AUTHORIZED DEALER OR QUALIFIED INSTALLATION PROFESSIONAL TO IN- STALL/MAINTAIN THE AIR CONDITIONER. INAPPROPRIATE SERVICING MAY RESULT IN WATER LEAKAGE, ELECTRIC SHOCK OR FIRE. • TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE ALL POWER SWITCHES ARE OFF.
  • Page 5 FILE NO. SVM-17050 Do not pierce or burn as the appliance is pressurized. Do not expose the appliance to heat, fl ame, sparks, or • other sources or ignition. Else, it may explode and cause injury or death. • For R32 model, use pipes, fl are nut and tools which is specifi ed for R32 refrigerant. Using of existing (R22) piping, fl...

  • Page 6: Specifications

    FILE NO. SVM-17050 2. SPECIFICATIONS 2-1. Specifications RAS-25PKVPG-ND RAS-35PKVPG-ND Unit model Indoor RAS-25PAVPG-ND RAS-35PAVPG-ND Outdoor 2.50 Cooling capacity (kW) 3.50 0.90-3.50 0.90-4.10 Cooling capacity range (kW) 3.20 4.00 Heating capacity (kW) Heating capacity range (kW) 0.70-6.70 0.70-7.70 1Ph, 220-240V, 50Hz...

  • Page 7: Operation Characteristic Curve

    FILE NO. SVM-17050 2-2. Operation Characteristic Curve <Cooling> <Heating> RAS-35PKVPG-ND RAS-35PKVPG-ND RAS-25PKVPG-ND RAS-25PKVPG-ND 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 Indoor Air Flow : High Indoor r ir Flow : High Pipe Length : 5m Pipe Length : 5m...

  • Page 8: Refrigerant R32

    FILE NO. SVM-17050 3. REFRIGERANT R32 3. If a refrigeration gas leakage occurs during This air conditioner adopts the new refrigerant HFC installation/servicing, be sure to ventilate fully. (R32) which does not damage the ozone layer. If the refrigerant gas comes into contact with fire, a The next section describes the precautions for air poisonous gas may occur.
  • Page 9 FILE NO. SVM-17050 Table 3-2-1 Thicknesses of annealed copper pipes Thickness (mm) Nominal diameter Outer diameter (mm) 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 10 FILE NO. SVM-17050 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 R32 or conven- tional flare tool. Flare processing dimensions differ according to the type of flare tool.
  • Page 11 FILE NO. SVM-17050 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 12 FILE NO. SVM-17050 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 R32 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 13: Recharging Of Refrigerant

    FILE NO. SVM-17050 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 14: Brazing Of Pipes

    FILE NO. SVM-17050 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 R32 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 15 FILE NO. SVM-17050 2. Characteristics required for flux 3-5-3. Brazing • 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 16: Construction Views

    FILE NO. SVM-17050 4. CONSTRUCTION VIEWS 4-1. Indoor Unit Heat exchanger Plasma ion charger (Air puri er) Air lter Front panel Knock out system Knock out system 84.5 141.5 114.3 Wiress remote controller Drain hose (0.6m) Hanger Hanger Connecting pipe(0.62m) Connecting pipe(0.66m) (For 25, 35 Series : Flare 9.52mm)
  • Page 17 FILE NO. SVM-17050 4-2. Outdoor Unit 6 hole R5.5 A detail drawing (Back leg) 6 hole 11x14 hole 25 Drain outlet 11x14 Hole (For 10 anchor bolt) B detail drawing (Front leg) FAN-GUARD COVER-PV ViewZ Electrical part Liquid side (Flare 6.35) Gas side (Flare...

  • Page 18: Wiring Diagram

    FILE NO. SVM-17050 5. WIRING DIAGRAM - 18 -...

  • Page 19: Specifications Of Electrical Parts

    Outside air temp. sensor (TO sensor) 10kΩ (25°C) (Inverter attached) Heat exchanger temp. sensor (TE sensor) 10kΩ (25°C) JX0-6B Terminal block (6P) 20A, AC250V 3-phases 6-poles 1075W KTN130D30UFZ RAS-25PAVPG-ND Compressor KTN150D42UFZ 3-phases 6-poles 1185W RAS-35PAVPG-ND CAM-MD12TCTH-5 Coil for PMV DC12V STF-H01AJ Coil for 4-way valve...

  • Page 20: Refrigerant Cycle Diagram

    FILE NO. SVM-17050 7. REFRIGERANT CYCLE DIAGRAM 7-1. Refrigerant Cycle Diagram RAS-25PKVPG-ND / RAS-25PAVPG-ND Temp. measurement INDOOR UNIT Indoor heat exchanger Cross flow fan Max. : 25m Min. : 2m Pressure measurement Chargeless : 15m Deoxidized copper pipe Gauge attaching port Charge : 20g/m Outer dia.
  • Page 21 FILE NO. SVM-17050 RAS-35PKVPG-ND / RAS-35PAVPG-ND Temp. measurement INDOOR UNIT Indoor heat exchanger Cross flow fan Max. : 25m Min. : 2m Pressure measurement Chargeless : 15m Deoxidized copper pipe Gauge attaching port Charge : 20g/m Outer dia. : 6.35mm Vacuum pump connecting port Thickness : 0.8mm (16 to 25m)

  • Page 22: Operation Data

    FILE NO. SVM-17050 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/- 25PKVPG-ND 14 to 16 39 to 41 High High...

  • Page 23: Control Block Diagram

    FILE NO. SVM-17050 8. CONTROL BLOCK DIAGRAM 8-1. Indoor Unit M.C.U. Indoor Unit Control Unit Functions Heat Exchanger Sensor (TCJ) Louver Motor · Cold draft preventing Function Heat Exchanger Sensor (TC) · 3-minute Delay at Restart for Compressor Room Temperature Sensor (TA) Louver Motor ·...
  • Page 24 FILE NO. SVM-17050 8-2. Outdoor Unit (Inverter Assembly) - 24 -...

  • Page 25: Operation Description

    FILE NO. SVM-17050 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 to conditioner. Its system can control the speed of compressor motor according to load.
  • Page 26 FILE NO. SVM-17050 9-2. Operation Description 1. Basic operation ......................27 1. Operation control ....................27 2. Cooling/Heating operation ..................28 3. AUTO operation ..................... 28 4. DRY operation ......................28 2. Indoor fan motor control ..................... 29 3. Outdoor fan motor control ................... 31 4.

  • Page 27: Basic Operation

    FILE NO. SVM-17050 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 28: Cooling/Heating Operation

    FILE NO. SVM-17050 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 29: Indoor Fan Motor Control

    FILE NO. SVM-17050 Item Operation flow and applicable data, etc. Description 2. Indoor fan <In cooling operation> motor control (This operation controls the fan speed at indoor unit side.) * Symbols The indoor fan (cross flow fan) is operated by the phase- : Ultra High control induction motor.
  • Page 30 FILE NO. SVM-17050 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+, H or Quiet on the remote controller, the operation is per- formed with the constant speed HEAT ON shown in Fig.

  • Page 31: Outdoor Fan Motor Control

    In Heating operation Hz < 13.2 13.2 < Hz < 27.0 27.0 < Hz Hz < 19.2 19.2 < Hz < 36.6 36.6 < Hz RAS-25PAVPG-ND RAS-25PAVPG-ND Comp. Hz Comp. Hz Hz < 16.8 16.8 < Hz < 37.2 37.2 < Hz RAS-35PAVPG-ND Hz <...

  • Page 32: Capacity Control

    Capacity control continues. specified value. Mode Outdoor temperature: To (°C) Current Release Value (A) RAS-25PAVPG-ND RAS-35PAVPG-ND To ³ 45 Cooling 45 > To ³ 40 To < 40 To ³ 16 10.8 10.8...

  • Page 33: Release Protective Control By Temperature Of Indoor Heat Exchanger

    FILE NO. SVM-17050 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 34: Defrost Control (Only In Heating Operation)

    FILE NO. SVM-17050 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 temperature (TE) and outdoor air operation) The temperature sensor of the outdoor heat temperature (TO).
  • Page 35 FILE NO. SVM-17050 Item Operation flow and applicable data, etc. Description • Strong defrost 7. Defrost control <Finish of defrost operation for strong Upgrade defrost ability when normal defrost ability (Only in heating defrost> is not enough by increase defrosting finished operation) •...

  • Page 36: Louver Control

    FILE NO. SVM-17050 Item Operation flow and applicable data, etc. Description 8. Louver control This function controls the air direction of the indoor unit. 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 37 FILE NO. SVM-17050 Item Operation flow and applicable data, etc. Description 8. Louver control 2) Louver position in heating operation Manual and automatic operation HI-POWER operation Initial setting is directs downward (73mm) Default setting is directs downward (45mm) Wide air direction Wide position is directs downward (73mm) Wide-angle Right wide...

  • Page 38: Wind Direction Adjustment

    FILE NO. SVM-17050 Item Operation flow and applicable data, etc. Description 8. Louver control 2) Wind direction adjustment Horizotal blowing Inclined blowing • The Up-Down louver position can be arbitrarily set up by pressing [FIX ] button. • The Left-Right louver position can be arbitrarily set up by pressing [FIX...

  • Page 39: Eco Operation

    FILE NO. SVM-17050 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 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 40: Temporary Operation

    FILE NO. SVM-17050 Item Operation flow and applicable data, etc. Description 10. Temporary Pressing [RESET] button starts the temporary opera- 1) When pressing [RESET] button, the operation tion of [AUTO] operation. When keeping [RESET] temporary [AUTO] operation starts. button pressed for 10 seconds or more, the temporary 2) When keeping [RESET] button pressed [COOL] operation is performed.

  • Page 41: Plasma Ionizer Purifier Control [Detection Of Abnormality]

    FILE NO. SVM-17050 Item Operation flow and applicable data, etc. Description 1. Purpose 11. Plasma ionizer purifier control [Detection of abnormality] The air purifying control function is to alert the user to trouble in the plasma purifier Plasma purifier operation operation.

  • Page 42: High Pressure Control

    FILE NO. SVM-17050 Item Operation flow and applicable data, etc. Description 13. High pressure control 1. Purpose This function detects error on the refrigerating cycle or error on the com- Cooling Heating pressor, and performs protective control. Control operation (TE) (TC) 2.

  • Page 43: Self-Cleaning Function

    FILE NO. SVM-17050 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 44 FILE NO. SVM-17050 Item Operation flow and applicable data, etc. Description 15. Self-Cleaning function 15-1-1. Self-Cleaning diagram Operation display FCU fan rpm is depend on presetting. (500RPM) FCU louver OPEN OPEN (12.7º) CLOSE ON or OFF ON or OFF Timer display depend on presetting of timer function.

  • Page 45: Remote-A Or B Selection

    FILE NO. SVM-17050 Item Operation flow and applicable data, etc. Description 16. 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 indoor unit using one remote controller. unit in case of 2 air conditioner are installed nearly.

  • Page 46: Short Timer

    FILE NO. SVM-17050 Item Operation flow and applicable data, etc. Description 19. Short Timer In the normal condition, after switching one circuit Purpose breaker, 3-minute delay time for compressor and To start the unit immediately for the purpose of 1 hour for plasma air purifier are set for the testing, trial...etc, short timer can be used.

  • Page 47: Mode

    Heating Operation Compressor Compressor frequncy Fan Speed frequncy Fan Speed (rps) (rpm) (rps) (rpm) normal normal RAS-25PAVPG-ND Silent 1 Silent 2 normal normal RAS-35PAVPG-ND Silent 1 Silent 2 POWER-SELECTION AND SILENT OPERATION [100%] [75%] [50%] SILENT#2 SILENT#1 - 47 -...

  • Page 48: Outdoor Quiet Control

    As the maximum number of revolution of the compressor is restricted, the rise- up performance at the start time is weakened. <Maximum number of revolution of compressor at normal time and Quiet control time> RAS-25PAVPG-ND RAS-35PAVPG-ND Outside temp. Normal time Quiet controlled...

  • Page 49: Fireplace Operation

    FILE NO. SVM-17050 Item Operation flow and applicable data,etc Description 25. Fireplace Fireplace button on remote controller is pressed. Keep air circulation during other heat Operation Fireplace 1: source applied. Cancel cold draft prevention control and fan Note: speed depend on user require base on basic With Fireplace operation on heating control.

  • Page 50: Fcu Display Lamp Brighness Control

    FILE NO. SVM-17050 Item Operation flow and applicable data,etc Description 28. FCU Display lamp brightness control Purpose It is necessary to decrease the display lamp brightness or turn it LAMP BRIGHTNESS ADJUSTMENT off. While operating (Auto, Cool, Heat or Dry), press and hold 5 seconds.

  • Page 51: Auto Restart Function

    FILE NO. SVM-17050 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 52: How To Cancel The Au To Restar T Function

    FILE NO. SVM-17050 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 53: Parts Name Of Remote Contr Oller

    FILE NO. SVM-17050 9-4. Remote control 4-1. Remote control and its functions I nfrared signal emitter Memory and preset button (PRESET) Start/Stop button Temperature up/down button (TEMP.) Mode select button (MODE) Swing louver button (SWING) Fan speed button (FAN) Wide air flow, spot air flow (AIR FLOW) Set louver button for vertical direction (FIX ) Set louver button for Horizontal divection (FIX ) 8 degree celcius operation and fireplace function button (...

  • Page 54: How To Set Weekly Timer

    FILE NO. SVM-17050 How to set WEEKLY TIMER Press to enter WEEKLY TIMER setting. Blink Press to select desired day in sequence. The sequence of day symbol appears on the LCD WEEKLY SUMO TUWETHFRSA (All day) Press to select the program number. •...
  • Page 55 FILE NO. SVM-17050 Press to select desired operation. Press to select desired temperature. • The temperature can be set between 17°C and 30°C. Press to select the desired fan speed. Add operations, if required. • Press to use 8°C operation. •...

  • Page 56: Edit Weekly Timer Program

    FILE NO. SVM-17050 Edit Weekly timer program To edit the program after confi rming the weekly timer setting on Page 23 , follow steps below. Press • The day of the week and the program number of the current day will be displayed. Press to select the day of the week and press to select program number to be confi...

  • Page 57: To Delete Programs

    FILE NO. SVM-17050 To delete programs The individual program Press • The day of the week and the program number is displayed. • Select the day to delete the program. Press to select the program number to be deleted. Press •...
  • Page 58 FILE NO. SVM-17050 2. AUTOMATIC OPERATION To automatically select cooling, heating, or fan only operation. Press Press : Select Press Press : Select the desired temperature 3. Press Press : Select AUTO, LOW , LOW+ , MED , MED+ , HIGH or Quiet 3.
  • Page 59 FILE NO. SVM-17050 8. ECO OPERATION To automatically control room to save energy (except in DRY and FAN ONLY mode) Press : Start and stop the operation. Note: Cooling operation; the set temperature will increase automatically 1 degree/ hour for 2 hours (maximum 2 degrees increase). For heating operation the set temperature will decrease.
  • Page 60 FILE NO. SVM-17050 10. COMFORT AIR FLOW • Wide air flow : Air flows around the room. • Spot air flow : Air flow is concentrated at one point. While operating (Auto, Cool, Heat, Dry and these modes with PURE), Select •...
  • Page 61 FILE NO. SVM-17050 13. QUIET OPERATION To operate at ultra low fan speed for quiet operation (except in DRY mode) Press [Fan] Button : Start and stop the operation. Note: Under certain conditions, QUIET operation may not provide adequate cooling or heating due to low sound features. 14.

  • Page 62: Name And Functions Of Indications On Remote Controller

    FILE NO. SVM-17050 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 weekly timer indicator This transmission mark indicates when the The time setting for timer operation and weekly remote controller transmits signals to the indoor timer function is indicated.

  • Page 63: Installation Procedure

    FILE NO. SVM-17050 10. INSTALLATION PROCEDURE 10-1. Installation Diagram of Indoor and Outdoor Units For the rear left and left piping Wall Hook Installation plate Insert the cushion between the indoor unit and wall, and tilt the indoor unit for better operation.
  • Page 64 FILE NO. SVM-17050 10-2. Installation 10-2-1. Optional installation parts Part Parts name Q'ty Code Refrigerant piping Liquid side : ∅6.35 mm each Gas side : ∅9.52 mm Pipe insulating material (polyethylene foam, 6 mm thick) Putty, PVC tapes each Fixing bolt arrangement of outdoor unit 197 mm 125 mm Air inlet...
  • Page 65 FILE NO. SVM-17050 10-2-2. Accessory and installation parts Part Part Part Part name (Q’ty) Part name (Q’ty) Part name (Q’ty) Installation plate* x 1 Owner's Manual Mounting screw** ∅4 x 25 s x 6 Flat head wood screw Wireless remote control* x 1 ∅3.1 x 16 s x 2 Installation Manual Drain nipple*** x 1...
  • Page 66 FILE NO. SVM-17050 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 67 FILE NO. SVM-17050 10-3. Indoor Unit 10-3-2. Cutting a Hole and Mounting Installation Plate 10-3-1. Installation Place • A place which provides the spaces around the Cutting a hole indoor unit as shown in the diagram. When installing the refrigerant pipes from the rear. •...
  • Page 68 FILE NO. SVM-17050 When the installation plate is directly 10-3-3. Piping and Drain Hose Installation mounted on the wall Piping and drain hose forming 1. Securely fit the installation plate onto the wall by screwing it in the upper and lower parts to hook •...
  • Page 69 FILE NO. SVM-17050 How to remove the drain cap In case of right or left piping • Take off the cap by hand and cut of the slit. Clip the drain cap by needle-nose After scribing slits of the bush body with a knife or •...
  • Page 70 FILE NO. SVM-17050 Bend the connecting pipe within a radius of 30 mm. 10-3-4. Indoor Unit Fixing To connect the pipe after installation of the unit 1. Pass the pipe through the hole in the wall and hook (figure) the indoor unit on the installation plate at the upper Reference position of Liquid side and Gas side's hook.
  • Page 71 FILE NO. SVM-17050 10-3-6. Drainage CAUTION 1. Run the drain hose sloped downwards. Arrange the drain pipe for proper drainage from NOTE : the unit. Improper drainage can result in dew-dropping. • The hole should be made a slight downward slant on the outdoor side.
  • Page 72 FILE NO. SVM-17050 10-4. Outdoor Unit Precautions for adding refrigerant 10-4-1. Installation Place • Use a scale having a precision with at least 10 g per index line when adding the refrigerant. • A place which provides enough space around the Do not use a bathroom scale or similar instrument.
  • Page 73 FILE NO. SVM-17050 10-4-3. Draining the Water 10-4-4. Refrigerant Piping Connection • Holes are provided on the base plate of the Flaring outdoor unit to ensure that the defrost water produced during heating operations is drained off 1. Cut the pipe with a pipe cutter. efficiently.

  • Page 74: Tightening Connection

    FILE NO. SVM-17050 10-4-5. Evacuating Tightening Connection After the piping has been connected to the indoor Align the centers of the connecting pipes and tighten unit, perform the air purge. the flare nut as much as possible with your fingers. Then tighten the nut with a wrench and torque AIR PURGE wrench as shown in the figure.
  • Page 75 FILE NO. SVM-17050 CAUTION • KEEP IMPORTANT 5 POINTS FOR PIPING WORK (1) Take away dust and moisture (Inside of the connecting pipes.) (2) Tight the connection (between pipes and unit) (3) Evacuate the air in the connecting pipes using a VACUUM PUMP.

  • Page 76: Wiring Connection

    FILE NO. SVM-17050 10-5. Electrical works The power supply can be selected to connect to indoor unit or outdoor unit. Choose proper way and connect the power supply and connecting cable by follow the instruction as following. Model RAS-25PKVPG-ND RAS-35PKVPG-ND Power source 50Hz, 220 –...
  • Page 77 FILE NO. SVM-17050 10-5-2. Power Supply and Connecting Cable Connection Power Supply Input at Indoor Unit Terminal Block (Recommend) Indoor Unit Outdoor Unit Power supply cable Connecting cable connect to Stripping length of the terminal block (1, 2, 3, ˙) power supply cable Earth line 100 mm...

  • Page 78: Power Supply Input Wiring Diagram

    FILE NO. SVM-17050 10-5-3. Power Supply input Wiring Diagram Power supply input at Indoor unit Terminal Block (Recommend) Indoor Terminal Block Power supply input Outdoor Terminal Block Power supply input at Outdoor unit Terminal Block (Optional) Indoor Terminal Block Outdoor Terminal Block Power supply input...
  • Page 79 FILE NO. SVM-17050 Note : Repeat above step to reset Remote Control 10-6. Others to be A. 10-6-1. Gas leak test 2. Remote Control A has not “A” display. 3. Default setting of Remote Control from factory is A. Check places for the indoor unit.

  • Page 80: How To Diagnose The Trouble

    FILE NO. SVM-17050 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 81 FILE NO. SVM-17050 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 82: First Confirmation

    FILE NO. SVM-17050 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 83 FILE NO. SVM-17050 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 84 FILE NO. SVM-17050 11-4. S elf-Diagnos is by R emote C ontroller (C hec k C ode) 1. If the lamps are indicated as shown B to E in Table 11-4-1, 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 in formation of the self-diagnosis on the display of the remote controller with the check codes.
  • Page 85 FILE NO. SVM-17050 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 86 FILE NO. SVM-17050 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 87 FILE NO. SVM-17050 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 88 FILE NO. SVM-17050 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 89 FILE NO. SVM-17050 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 90 FILE NO. SVM-17050 Block distinction Operation of diagnosis function Action and Judgment Check Check Display Block Cause of operation conditioner code code flashing error status The others Return signal of the outdoor Indoor unit Flashes when 1. . Check power supply (Rate +10%) operates error is detected (including...

  • Page 91: Judgement Of Trouble By Every Symptom

    FILE NO. SVM-17050 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 92 FILE NO. SVM-17050 (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 93 FILE NO. SVM-17050 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 94 FILE NO. SVM-17050 (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 95 FILE NO. SVM-17050 (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. There is no beep from the indoor unit Push the [ ] button.
  • Page 96 FILE NO. SVM-17050 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 97 FILE NO. SVM-17050 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 98: How To Diagnose Trouble In Outdoor Unit

    FILE NO. SVM-17050 11-7. How to Diagnose Trouble in Outdoor Unit • Connect discharge Check Power Supply resistance (approx. 100Ωı , (Voltage Rate ±10%) 40W) or soldering iron (plug) between +, –terminals of the electrolytic capacitor (760µF) Turn OFF power of C08 (with printed CAUTION supply.
  • Page 99 FILE NO. SVM-17050 Does outdoor fan operate normally? Turn OFF power supply. Does compresser operate normally? Remove connector CN31 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 100 FILE NO. SVM-17050 Turn off the power breaker once, and turn on again after 10 seconds. Does the OPERATION indicator flash? To item “Power supply is not turned on” Turn off the power breaker and remove CN401 (Micro switch connector). Short-circuit between of CN401 at PC side, and turn on the power breaker after 10 seconds.
  • Page 101 FILE NO. SVM-17050 11-9. How to Check Simply the Main Parts (2) Inspection procedures 1) When a P.C. board is judged to be defective, 11-9-1. 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 102 FILE NO. SVM-17050 11-9-2. P .C . Board Layout +15V +12V [1] Sensor characteristic table TD : Discharge temp. sensor TA : Room temp. sensor TC and TCJ : Heat exchanger temp. sensor TO : Outdoor temp. sensor TA,TC,TCJ,TO,TE,TS TE : Outdoor heat exchanger temp. sensor TS : Suction temp.
  • Page 103 FILE NO. SVM-17050 11-9-3. 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,TCJ) (Normal temp.) sensor Temperature 10°C 20°C 25°C 30°C 40°C Sensor TA, TC, TCJ (kΩ) 20.7 12.6 10.0...
  • Page 104 FILE NO. SVM-17050 11-9-5. Checking Method for Each Part Part name Checking procedure Electrolytic capacitor 1. Turn OFF the power supply breaker. (For boost, smoothing) 2. Discharge all two capacitors completely. 3. Check that safety valve at the bottom of capacitor is not broken. 4.

  • Page 105: How To Simply Judge Whether Outdoor Fan Motor Is Good Or Bad

    FILE NO. SVM-17050 11-10. 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 106: How To Replace The Main Parts

    FILE NO. SVM-17050 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 107 FILE NO. SVM-17050 Part name Work procedure Remarks BUSH-BODY(R) 1) Push the bottom of part and slide to the BUSH-BODY(R) BUSH-BODY(L) right side. BUSH-BODY(L) 1) Push the bottom of part and slide to the left side. The claw of Front panel must <Point to note during re-assemble be lower ASM-FRAME Front panel>...
  • Page 108 FILE NO. SVM-17050 Part name Work procedure Remarks Electric parts 7) Disconnect the connector of box assembly. fan-motor, louver-motor and high voltage generator and cord Wi-Fi connector. High voltage generator connector Wi-Fi cord connector Louver motor Wi-Fi cord connector connector Fan motor 8) Pull out TCJ sensor from sensor holder of the evaporator.
  • Page 109 FILE NO. SVM-17050 Part name Work procedure Remarks Frame 1) Follow to the procedure 2) Remove the fixing screws at COVER-WIFI 1 Pcs. than take off wifi-cord out from hook lock. Screw 3) Remove the Fixing screws at ASM-FRAME (5 Pcs). 2 Screws Screws 4) Remove screw of earth lead on plate earth.
  • Page 110 FILE NO. SVM-17050 Part name Work procedure Remarks Plasma-ion 1) Follow to the procedure in the item charger, High 3 Screws 2) Remove 3 screws and remove the ion- volt generator charger assembly from the frame. 3) Remove the Plasma-ion charger from the High volt generator assembly.
  • Page 111 FILE NO. SVM-17050 Part name Work procedure Remarks Evaporator 1) Follow the procedure in item (Heat exchanger) 2) Remove 2 fixing screws at the left side of the end plate of the heat exchanger. Fixing screw 3) Remove 2 fixing screws on the right side of heat exchanger.
  • Page 112 FILE NO. SVM-17050 Part name Work procedure Remarks Fan motor 1) Follow the procedure 2) Remove 3 fixing screws, then remove Cover motor assembly. Fixing screw 3) Loosen the set screws of the transverse fan from the vent. Set screw 4) Remove 2 screws from the Motor- band (right) 5) Pull the motor band(right) and the Fan-...
  • Page 113 FILE NO. SVM-17050 Part name Work procedure Remarks 1) Follow to the procedure in the item Bearing Base bearing assembly 2) Remove 2 fixing screws from the Base bearing assembly, then remove Base bearing assembly from the main unit. <Caution at assembling> - If the bearing is out from the housing, Fixing screw push it into the specified position and then...
  • Page 114 FILE NO. SVM-17050 Part name Work procedure Remarks Cross flow fan <Caution at reassemblying> 1) To incorporate the Fan-motor incorporate Fan motor D Double point set shaft screw 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 5.0mm...
  • Page 115 FILE NO. SVM-17050 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 116 FILE NO. SVM-17050 Part name Procedure Remarks Front cabinet 1. Detachment ‚ 1) Perform step 1 in  2) Remove the fixing screws (ST2TØ4 × 10L 2 pcs.) used to secure the front cabinet and inverter cover, the screws (ST2TØ4 ×...
  • Page 117 FILE NO. SVM-17050 Part name Procedure Remarks Inverter 1) Perform work of item 1 in  ƒ Inverter cover assembly 2) Remove screw (ST2TØ4 × 10L 2 pcs.) of the upper part of the front cabinet. P.C. board (Soldered surface) •...
  • Page 118 FILE NO. SVM-17050 Part name Procedure Remarks 1. Disconnect the leads and connectors connected to Control board assembly the other parts from the control board assembly. CN62 CN63 CN61 CN64 CN71 1) Leads • 3 leads (black, white, orange) connected to terminal block.
  • Page 119 FILE NO. SVM-17050 Part name Procedure Remarks Side cabinet 1. Side cabinet (right) … 1) Perform step 1 in ‚ and all the steps ƒ 2) Remove the fixing screw (ST2TØ4 × 10L 3 pcs.)used for securing the side cabinet to the bottom plate and valve fixing panel.
  • Page 120 FILE NO. SVM-17050 Part name Procedure Remarks Compressor ‡ 1) Perform work of item 1 of  … ‚ ƒ „ 2) Extract refrigerant gas. 3) Remove the partition board. (ST2TØ4 × 10L 4 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 121 FILE NO. SVM-17050 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 122 FILE NO. SVM-17050 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. Arrow D Sensor lead Straight part Detail C Detail B Detail C Detail A TS sensor (Suction pipe temperature sensor) •...
  • Page 123 FILE NO. SVM-17050 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 124: Exploded Views And Parts List

    FILE NO. SVM-17050 13. EXPLODED VIEWS AND PARTS LIST 13-1. Indoor Unit Electronic parts assembly. Location Part Location Part Description Description 43T00731 ASM-PANEL(R)-S 43039406 ASM-COV-MOTOR 43T00732 ASM-PANEL(L)-S 43T11331 PIPE-SHIELD 43005871 ASM-PANEL(AOLT) 43049799 HOLDER-PIPE 43T09545 ASM-AINL-S 43T62352 ASM-COVER-CONN 43T02306 ASM-BUSH-BODY(R) 43T83305 HOLDER, REMOTE CONTROL 43T02307 ASM-BUSH-BODY(L)
  • Page 125 FILE NO. SVM-17050 13-2. Indoor Unit (E-Parts Assy) Location Part Location Part Description Description 43T50324 SENSOR; HEAT EXCHANGER 43T6V940 PC BOARD 43T50320 SENSOR HEAT EXCHANGER (For RAS-35PKVPG-ND) 43T50355 TEMPERATURE SENSOR 43T60378 TERMINAL 43T62340 CORD-CLAMP 43T60417 TERMINAL 43T6V469 PC BOARD ASSY:WRS-LED 43T60416 TERMINAL 43T6V939...
  • Page 126 43T47001 NUT FLANGE 43T63319 HOLDER,SENSOR 43T63318 HOLDER SENSOR 43T43458 CONDENSOR ASSEMBLY 43T63317 HOLDER,SENSOR 43T41522 COMPRESSOR 43T63316 HOLDER,SENSOR (For RAS-25PAVPG-ND) 43T91336 CARTON-BOX 43T41527 COMPRESSOR 43T91338 FIBERBOARD UNDER ASSEMBLY (For RAS-35PAVPG-ND) 43T91337 CUSHION PACKING UPPER 43T47403 BONNET, 6.35 DIA 43T91341 PAC-COVER 43T47404 BONNET, 9.52 DIA...
  • Page 127 Location Part Location Part Description Description 43T62351 HEATSINK 43T60326 FUSE 43T6V937 PC BOARD (WP-030) 43T50369 TEMPERATURE SENSOR (For RAS-25PAVPG-ND) 43T50336 TEMPERATURE SENSOR 43T6V938 PC BOARD (WP-030) 43T50370 TEMPERATURE SENSOR (For RAS-35PAVPG-ND) 43T50371 TEMPERATURE SENSOR 43T60384 TERMINAL-6P 43T62313 PC PLATE BASE...
  • Page 128 TOSHIBA CARRIER (THAILAND) CO.,LTD. 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.

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