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Table of Contents
FILE No. A11-017
AIR CONDITIONER (SPLIT TYPE)

SERVICE MANUAL

Model name:
RAS-M10PKVP-E
RAS-M13PKVP-E
RAS-M16PKVP-E
RAS-M18PKVP-E
RAS-3M26UAV-E
PRINTED IN JAPAN, Jan. 2012, TDOC
Table of Contents
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Summary of Contents for Toshiba RAS-M10PKVP-E

  • Page 1: Service Manual

    FILE No. A11-017 AIR CONDITIONER (SPLIT TYPE) SERVICE MANUAL Model name: RAS-M10PKVP-E RAS-M13PKVP-E RAS-M16PKVP-E RAS-M18PKVP-E RAS-3M26UAV-E PRINTED IN JAPAN, Jan. 2012, TDOC...
  • Page 2: Table Of Contents

    CONTENTS 1. Safety Precautions ........3 2. Specifications ........5 3.
  • Page 3: Safety Precautions

    1. 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. [Explanation of indications] Indication Explanation...
  • Page 4 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 • The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual.
  • Page 5: Specifications

    A 1-room connection is not an option for the indoor units (you cannot connect only one indoor unit). Be sure to connect indoor units in two or more. The contents noted in this service manual limit the indoor units to the RAS-M10PKVP-E, RAS-M13PKVP-E, RAS-M16PKVP-E, RAS-M18PKVP-E.
  • Page 6 2-1. Specifications RAS-M10PKVP-E, RAS-M13PKVP-E, RAS-M16PKVP-E, RAS-M18PKVP-E / RAS-3M26UAV-E Indoor RAS- M10PKVP-E, M13PKVP-E, M16PKVP-E, M18PKVP-E Unit model Outdoor RAS- 3M26UAV-E Cooling Capacity (kW) Cooling Capacity range (kW) 4.1~9.0 Heating Capacity (kW) Heating Capacity range (kW) 2.0~11.2 Power supply 220-240 V 1 Ph 50 Hz / 220 V 1 Ph 60 Hz...
  • Page 7 2-2. Specifications of Performance When Each Indoor Unit is Combined with Other Unit Outdoor Unit: RAS-3M26UAV-E <Cooling / 220 V> Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Cooling capacity Power consumption Operation current Power Factor Energy Efficiency Sound Sound...
  • Page 8 <Cooling / 220 V> (Continued) Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Cooling capacity Power consumption Operation current Power Factor Energy Efficiency Sound Sound (kW) Pressure Power Ratio EER 3 units 2000 9.57 3.97 1.76 1.76 3.75 - 2750...
  • Page 9 <Cooling / 220 V> (Continued) Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Cooling capacity Power consumption Operation current Power Factor Energy Efficiency Sound Sound (kW) Pressure Power Ratio EER 2000 9.57 3 units 3.36 2.07 2.07 3.75 - 2800...
  • Page 10 <Heating / 220 V> Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Heating capacity Power consumption Operation current Power Factor Sound Sound Energy Efficiency (kW) Pressure Power Ratio EER 1 unit 2.70 4.70 3.00 - 1980 1.87 9.18 4.00...
  • Page 11 <Heating / 220 V> (Continued) Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Heating capacity Power consumption Operation current Power Factor Energy Efficiency Sound Sound (kW) Pressure Power Ratio EER 3 units 5.08 1.96 1.96 2200 10.53 4.09 - 11.0...
  • Page 12 <Heating / 220 V> (Continued) Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Heating capacity Power consumption Operation current Power Factor Energy Efficiency Sound Sound (kW) Pressure Power Ratio EER 3 units 3.09 3.09 2.81 2200 10.53 4.09 - 11.2...
  • Page 13 <Cooling / 230 V> Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Cooling capacity Power consumption Operation current Power Factor Sound Sound Energy Efficiency (kW) Pressure Power Ratio EER 1 unit 2.00 3.67 3.08 3.66 - 3.58 2.70 4.23 3.60...
  • Page 14 <Cooling / 230 V> (Continued) Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Cooling capacity Power consumption Operation current Power Factor Energy Efficiency Sound Sound (kW) Pressure Power Ratio EER 3 units 4.50 1.50 1.50 2000 9.15 3.75 - 2770...
  • Page 15 <Cooling / 230 V> (Continued) Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Cooling capacity Power consumption Operation current Power Factor Energy Efficiency Sound Sound (kW) Pressure Power Ratio EER 3 units 2.66 2.66 2.19 2000 9.15 3.75 - 2800...
  • Page 16 <Heating / 230 V> Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Heating capacity Power consumption Operation current Power Factor Sound Sound Energy Efficiency Ra- (kW) Pressure Power tio EER 1 unit 2.70 4.50 3.00 - 1980 1.79 - 8.78 4.00 1450...
  • Page 17 <Heating / 230 V> (Continued) Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Heating capacity Power consumption Operation current Power Factor Sound Sound Energy Efficiency Ra- (kW) Pressure Power tio EER 3 units 5.08 1.96 1.96 2200 10.07 4.09...
  • Page 18 <Heating / 230 V> (Continued) Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Heating capacity Power consumption Operation current Power Factor Sound Sound Energy Efficiency Ra- (kW) Pressure Power tio EER 3 units 3.09 3.09 2.81 2200 10.07 4.09...
  • Page 19 <Cooling / 240 V> Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Cooling capacity Power consumption Operation current Power Factor Sound Sound Energy Efficiency (kW) Pressure Power Ratio EER 1 unit 2.00 3.52 3.08 3.51 3.43 2.70 4.06 3.60...
  • Page 20 <Cooling / 240 V> (Continued) Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Cooling capacity Power consumption Operation current Power Factor Energy Efficiency Sound Sound (kW) Pressure Power Ratio EER 3 units 4.50 1.50 1.50 2000 8.77 3.75 - 2770...
  • Page 21 <Cooling / 240 V> (Continued) Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Cooling capacity Power consumption Operation current Power Factor Energy Efficiency Sound Sound (kW) Pressure Power Ratio EER 3 units 2.66 2.66 2.19 2000 8.77 3.75 - 2800...
  • Page 22 <Heating / 240 V> Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Heating capacity Power consumption Operation current Power Factor Sound Sound Energy Efficiency (kW) Pressure Power Ratio EER 1 unit 2.70 4.31 3.00 - 1980 1.71 8.42 4.00...
  • Page 23 <Heating / 240 V> (Continued) Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Heating capacity Power consumption Operation current Power Factor Sound Sound Energy Efficiency (kW) Pressure Power Ratio EER 3 units 5.08 1.96 1.96 2200 9.65 4.09 - 11.0...
  • Page 24 <Heating / 240 V> (Continued) Indoor unit Unit Capacity Total Outdoor noise (dB) Power Operating supply Statu Heating capacity Power consumption Operation current Power Factor Sound Sound Energy Efficiency (kW) Pressure Power Ratio EER 3 units 3.09 3.09 2.81 2200 9.65 4.09 - 11.2...
  • Page 25: Operation Characteristic Curve

    2-2-1. Operation Characteristic Curve <Cooling> <Heating> • Conditions • Conditions Indoor : DB20°C Indoor : DB27°C/WB19°C Outdoor : DB35°C Outdoor : DB7°C / WB6°C Air flow : High Air flow : High Pipe length : 5m × 5 Pipe length : 5m × 5 3 units operating 3 units operating Inverter output frequency (rps)
  • Page 26: Refrigerant R410A

    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 The working pressure of the new refrigerant R410A is room, it is necessary to exercise care so that, even 1.6 times higher than conventional refrigerant (R22).
  • Page 27 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 28 d) Flare Processing Make certain that a clamp bar and copper pipe have been cleaned. By means of the clamp bar, perform the flare processing correctly. Use either a flare tool for R410A or conventional flare tool. Flare processing dimensions differ according to the type of flare tool.
  • Page 29 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. 3-2-2 Relations between flare nut and flare seal surface 2.
  • Page 30: Required Tools

    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 31: Recharging Of Refrigerant

    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 Connect the charge hose to packed valve service port...
  • Page 32: Brazing Of Pipes

    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 33 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 • Due to a wide effective temperature range, flux must be performed by a person qualified. In order to prevent the oxide film from occurring in the is hard to carbonize.
  • Page 34: Construction Views

    4. Construction Views 4-1. Indoor Unit RAS-M10PKVP-E, RAS-M13PKVP-E, RAS-M16PKVP-E, RAS-M18PKVP-E 296.2 (At the time of operation) Moving panel Plasma ion charger Front panel (At the time of a stop) Air filter Piping port from Piping port from left/right sides left/right sides...
  • Page 35: Outdoor Unit

    4-2. Outdoor Unit RAS-3M26UAV-E 2-dia.12x17 U-shape hole (For dia.8-10 anchor bolt) leg part 2-dia.12x17 long hole leg part (For dia.8-10 anchor bolt) Fan guard Hanger Connecting pipe port: Connecting pipe dia.6.35 Liquid valve C unit Connecting pipe dia.9.52 Service port Connecting pipe dia.6.35 Gas valve B unit...
  • Page 36: Wiring Diagram

    5. Wiring Diagram 5-1. Indoor Unit RAS-M10PKVP-E, RAS-M13PKVP-E, RAS-M16PKVP-E, RAS-M18PKVP-E Air purifier electrode To outdoor unit Indoor terminal block High-voltage Power supply Heat exchanger Micro SW Sheet metal GRN&YEL Heat exchanger sensor DC5V (TC) Power supply DC12V circuit DC29V Louver motor right T3.15A...
  • Page 37 5-2. Outdoor Unit RAS-3M26UAV-E REACTOR MAIN P.C. FAN MOTOR BOARD REACTOR (MCC-1571) t°> POWER SUPPLY THERMOSTAT CIRCUIT COMPRESSOR COMPRESSOR F100 T3.15A 250V~ T10A 4WAY VALVE COIL 250V~ 250V~ CONTROL P.C.BOARD (MCC-5071) T3.15A 250V~ REACTOR EARTH SCREW POWER INDOOR INDOOR INDOOR SUPPLY UNIT A UNIT B...
  • Page 38: Specifications Of Electrical Parts

    6. Specifications of Electrical Parts 6-1. Indoor Unit RAS-M10PKVP-E, RAS-M13PKVP-E, RAS-M16PKVP-E, RAS-M18PKVP-E Parts name Type Specifications E: ICF-340-30-4 Fan motor (for indoor unit) DC 280–340 V, 30 W ND: ICF-340-30-4A Room temp. sensor (TA-sensor) ( – ) 10 kΩ at 25 °C Heat exchanger temp.
  • Page 39: Refrigerant Cycle Diagram

    7. Refrigerant Cycle Diagram RAS-M10PKVP-E, RAS-M13PKVP-E, RAS-M16PKVP-E, RAS-M18PKVP-E / RAS-3M26UAV-E Temp. measurement Indoor unit A C room B room C room B room Evaporator Cross flow fan Per 1 unit Max. : 25m Min. : 3m Connecting pipe Connecting pipe...
  • Page 40: Operation Data

    7-2. Operation Data Outdoor Unit: RAS-3M26UAV-E <Cooling> Standard Heat exchanger No. of Compressor Temperature condition Indoor unit pressure pipe temperature operating Indoor fan Outdoor fan revolution Indoor Outdoor units (rps) P (MP) T1 (ºC) T2 (ºC) 1 unit 0.9 to 1.1 15 to 17 36 to 42 High...
  • Page 41 <Cooling> (Continued) Standard Heat exchanger No. of Compressor Temperature condition Indoor unit pressure pipe temperature operating Indoor fan Outdoor fan revolution units (rps) Indoor Outdoor P (MP) T1 (ºC) T2 (ºC) 3 units 0.8 to 1.0 11 to 13 51 to 53 High High 59.8...
  • Page 42 Outdoor Unit : RAS-3M26UAV-E <Heating> Standard Heat exchanger No. of Compressor Temperature condition Indoor unit pressure pipe temperature operating Indoor fan Outdoor fan revolution Indoor Outdoor units (rps) P (MP) T1 (ºC) T2 (ºC) 1 unit 2.1 to 2.3 36 to 38 3 to 5 High 29.9...
  • Page 43 <Heating> (Continued) Standard Heat exchanger No. of Compressor Temperature condition Indoor unit pressure pipe temperature operating Indoor fan Outdoor fan revolution units (rps) Indoor Outdoor P (MP) T1 (ºC) T2 (ºC) 3 units 2.5 to 2.7 37 to 39 -2 to 0 High High 73.0...
  • Page 44: Control Block Diagram

    8. Control Block Diagram 8-1. Indoor Unit RAS-M10PKVP-E, RAS-M13PKVP-E, RAS-M16PKVP-E, RAS-M18PKVP-E Indoor Unit Control Unit M.C.U. Louver Humidity sensor Functions Motor Heat Exchanger Sensor (Tcj) • Cold Draft Preventing Function Louver Motor • 3-minute Delay at Restart for Compressor Heat Exchanger Sensor (Tc) Drive Control •...
  • Page 45: Outdoor Unit (Inverter Assembly)

    8-2. Outdoor Unit (Inverter Assembly) RAS-3M26UAV-E Discharge temp. sensor Gas side pipe temp. sensor Suction temp. sensor Evaporator temp. sensor Outdoor air temp. sensor MCC-5071 (CONTROL P.C. B) A unit P.M.V. M.C.U A unit serial signal communication circuit • Inverter outdoor frequency control B unit P.M.V.
  • Page 46: Operation Description

    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 conditioner, which uses DC motor for the indoor fan motor operation to IGBT module (Compressor stop and the outdoor fan motor.
  • Page 47 9-2. Operation Description Basic operation ..............48 1.
  • Page 48: Basic Operation

    Item Operation flow and applicable data, etc. Description 1.Operation control 1. Basic 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 49: Operating Mode Selection When Performing 2-Room Operation

    Item Operation flow and applicable data, etc. Description 1. Basic 2. Operating mode selection when performing 2-room operation operation 1) The outdoor unit operating mode conforms to the instructions of the indoor unit that was pushed first. (Continued) 2) When combined operation consisting of cooling (dry) and heating, fan (air purification) and heating, or cleaning operation and heating is performed, operation conforms to the instructions of the indoor unit that was pushed first as shown in the following table.
  • Page 50: Auto Operation

    Item Operation flow and applicable data, etc. Description 4. AUTO operation 1. Basic 1) Detects the room temperature (Ta) operation when the operation started. Selection of operation mode (Continued) 2) Selects an operation mode from Ta in As shown in the following figure, the operation starts by selecting the left figure.
  • Page 51: Indoor Fan Motor Control

    *5 : Fan speed = (M + –L) × 1/4 + L *8 : Fan speed = (H –L+) × 1/4 + L+ (Linear approximation from M+ and L) (Table 1) Indoor fan air flow rate (Cooling, Dry) RAS-M10PKVP-E RAS-M13PKVP-E RAS-M16PKVP-E RAS-M18PKVP-E...
  • Page 52: In Heating Operation

    Item Operation flow and applicable data, etc. Description 1) When setting the fan speed to L, L+, <In heating operation> 2. Indoor fan M, M+ or H on the remote controller, motor control (This operation controls the fan speed at indoor unit side.) (Continued) the operation is performed with the The indoor fan (cross flow fan) is operated by the phase control...
  • Page 53 • 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) RAS-M10PKVP-E RAS-M13PKVP-E RAS-M16PKVP-E RAS-M18PKVP-E Fan speed level...
  • Page 54: Outdoor Fan Motor Control

    Item Operation flow and applicable data, etc. Description 1) The operation command sent from The blowing air volume at the outdoor unit side is controlled. 3. Outdoor fan Receiving the operation command from the controller of indoor the remote controller is processed by motor control unit, the controller of outdoor unit controls fan speed.
  • Page 55: Capacity Control

    Item Operation flow and applicable data, etc. Description 1) The indoor units from A to C determine the respective instruction revolutions from the difference between 4. Capacity control the remote controller setting temperature (Ts) and the indoor temperature (Ta), and transmit this to the outdoor unit.
  • Page 56: Release Protective Control By Temperature Of Indoor Heat Exchanger

    Item Operation flow and applicable data, etc. Description <In cooling / dry operation> 1) When temperature of the indoor heat 6. Release protective exchanger drops below 5°C, the (Prevent-freezing control for indoor heat exchanger) control by compressor speed is reduced. (P In cooling / dry operation, the sensor of indoor heat exchanger temperature zone)
  • Page 57: Winding / Coil Heating Control

    Item Operation flow and applicable data, etc. Description 7. Winding / Coil When the outdoor temperature is low, the windings / coils are heated Winding / Coil heating is performed when heating to ensure compressor reliability. the following conditions are met. control Outdoor temperature To Winding/Coil...
  • Page 58: Louver Control

    Item Operation flow and applicable data, etc. Description 10. Louver This function controls the air direction of the indoor unit. control • The position is automatically controlled according to the operation mode (COOL / HEAT). 1) Louver • The set louver position is stored in memory by the microcomputer, and the louver returns to the stored position position when the next operation is performed.
  • Page 59: Sleep Mode Operation

    Item Operation flow and applicable data, etc. Description 11. SLEEP MODE When pushing [SLEEP MODE] button on the remote operation controller, a quiet and mild operation is performed by reducing the fan speed and the compressor speed. <Cooling operation> <Cooling operation> This function operates the air conditioner with the differ- 1) The indoor fan speed is controlled ence between the set and the room temperature as shown...
  • Page 60: Temporary Operation

    Item Operation flow and applicable data, etc. Description 12. Temporary Pushing [RESET] button starts the temporary 1) When pushing [RESET] button, the temporary operation operation of [AUTO] operation. When keeping [AUTO] operation starts. [RESET] button pushed for 10 seconds or more, 2) When keeping [RESET] button pushed for the temporary [COOL] operation is performed.
  • Page 61: Description

    Item Operation flow and applicable data, etc. Description 13. Air purifying 2. Description control Error is determined to have occurred (Continued) (indicated by the PURE indicator (Orange) in the following two cases. 1) When the panel switch has been set to OFF Air purifying operation by the opening of the air intake grill, etc.
  • Page 62: Discharge Temperature Control

    Item Operation flow and applicable data, etc. Description 14. Discharge 1. Purpose temperature This function detects error on the control refrigerating cycle or error on the compressor, and performs protective control. Td value Control operation 2. Operation Judges as an error and stops the compressor. 117°C •...
  • Page 63: Clean Operation

    Item Operation flow and applicable data, etc. Description 16. Clean operation 1. Purpose The clean 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 Unit now performing cooling or dry operation conditioner clean.
  • Page 64: Clean Operation Cancel

    Item Operation flow and applicable data, etc. Description 17. Clean operation Setting the clean operation cancel CAUTION cancel ∗ J231 will be near the MCU so take steps to ensure that it will not be Add J231 of the wireless unit P.C. board assembly. ∗...
  • Page 65: Select Switch On Remote Controller

    Item Operation flow and applicable data, etc. Description 18. Select switch on 1. Purpose remote This operation is to operate only one indoor controller unit using one remote controller. 2. Description Push the operation button When operating one indoor unit in a on the remote controller.
  • Page 66: Set Temperature Correction

    Item Operation flow and applicable data, etc. Description 19. Set temperature Indoor Control P.C. Board (Factory Default) 1. Purpose correction When the difference between the set temp. of the remote controller and the room temp. is wide due to the installation condition, etc, the Jumper wire set temp.
  • Page 67: Auto Restart Function

    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 3 minutes after power is restored. This function is not set to work when shipped from the factory.
  • Page 68: Cancel The Auto Restart Function

    9-3-2. Cancel the Auto Restart Function To cancel auto restart function, proceed as follows : Repeat the setting procedure : the unit receives the signal and beeps 3 times. The unit will be required to be turned on with the remote controller after the main power supply is turned off. •...
  • Page 69: Remote Controller And Its Functions

    9.4 Remote Controller and Its Functions 9-4-1. Parts Name of Remote Controller Auto louver button (SWING) Each time you push the SWING button, you can change the swing mode. (A receiving beep is heard.) (Vertical swing → Horizontal swing → Vertical and Horizontal swing →...
  • Page 70: Name And Functions Of Indications On Remote Controller

    9-4-2. Name and Functions of Indications on Remote Controller [Display] All indications, except for the clock time indicator, are (MEMORY) indicator displayed by pushing the button. Flashes for 3 seconds when the MEMO button is pushed during operation. Transmission mark mark is shown when holding down the button This transmission mark indicates when the remote for 3 seconds or more while the mark is flashing.
  • Page 71: Hi Power Mode

    9-5. Hi POWER Mode When [Hi POWER] button is pushed while the indoor unit is in Auto, Cooling or Heating operation, Hi POWER mark is indicated on the display of the remote controller and the unit operates according to the present operation mode as described below.
  • Page 72: Installation Procedure

    10. Installation Procedure 10-1. Safety Cautions The indoor unit shall be installed so that the top of the indoor unit is positioned For the rear left and left piping at least 2 m high. Also, avoid putting anything on the top of the indoor unit. Wall Hook 70 mm or more...
  • Page 73: Optional Installation Parts

    Refrigerant piping Liquid side Gas side Indoor unit name (Outer diameter) (Outer diameter) 1 ea. RAS-M10PKVP-E, RAS-M13PKVP-E 6.35 mm 9.52 mm RAS-M16PKVP-E, RAS-M18PKVP-E 6.35 mm 12.7 mm Shield pipe (for extension drain hose) (polyethylene foam, 8 mm thick) 10-2-2. Accessory and Installation Parts Part No.
  • Page 74: Installation / Servicing Tools

    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 75: Installation Place

    10-3. Indoor Unit 10-3-2. Drilling and Mounting Installation Plate 10-3-1. Installation Place Drilling • A place which provides enough spaces around When installing the refrigerant pipes from the rear. • the indoor unit as shown in the diagram. • A place where there are no obstacle near the air 150mm from Dia.
  • Page 76 Mounting the installation plate directly 10-3-3. Electrical Work on a wall 1. The supply voltage must be the same as the rated voltage of the air conditioner. 1) Securely fit the installation plate onto the wall by screws with the upper and lower catches. 2.
  • Page 77: Wiring Connection

    10-3-4. Wiring Connection Connecting cable Wiring the connecting cable can be carried out Terminal cover Screw Terminal block without removing the front panel. 1. Remove the air intake grille. Open the air intake grille upward and pull it toward you. Earth wire 2.
  • Page 78 10-3-5. Piping and Drain Hose Installation 4) Attach the drain cap • Insert hexagonal wrench (4 mm). Piping and drain hose forming Since condensation results in machine trouble, make sure to insulate both the connecting pipes separately. (Use polyethylene foam as insulating material.) Rear right Fig.
  • Page 79 Piping on the bottom right or the bottom CAUTION left • After making slits on the front panel with a knife or • Bind the auxiliary pipes (two) and connecting cable similar tool, cut them out with a pair of nippers or with facing tape tightly.
  • Page 80 10-3-6. Indoor Unit Installation 10-3-7. Drainage 1. Pass the pipe through the hole in the wall, and hook 1. Run the drain hose at a downward sloped angle. the indoor unit on the installation plate at the upper NOTE hooks. 2.
  • Page 81 10-4. Outdoor Unit 10-4-1. Accessory and Installation Parts Rubber cap CD-ROM Installation manual (Water-proof) (Installation manual) F-GAS label Drain nipple 10-4-2. Refrigerant Piping • Piping kit used for the conventional refrigerant cannot be used. • Use copper pipe with 0.8 mm or more thickness. •...
  • Page 82 10-4-5. Installation 1. Piping connections to the outdoor unit should be arranged in the sequence A, B, C starting from the NOTE bottom. (For each piping connection, the gas pipe is on the For installation, at least 3 dimensions should be kept bottom and the liquid pipe is on the top.) free from obstacles (walls).
  • Page 83: Tightening Connection

    How to remove the front panel • Tightening torque of flare pipe The pressure of R410A is higher than R22. 1. Remove 5 screws of the front panel. (Approx. 1.6 times) 2. Pull the front panel downward. Therefore securely tighten the flare pipes which connect the outdoor unit and indoor unit with the specified tightening torque using a torque wrench.
  • Page 84: Refrigerant Piping Connection

    10-4-6. Refrigerant Piping Connection 10-4-7. Evacuating After the piping has been connected to all indoor CAUTION unit(s), you can perform the air purge together at once. KEEP IMPORTANT 4 POINTS FOR PIPING WORK AIR PURGE NOTE 1. Keep dust and moisture from entering the pipes. 2.
  • Page 85 Packed valve handling precautions 3 units (A + B + C) Multi • Open the valve stem all the way out ; do not try to Terminal block(Connecting cable) open it beyond the stopper. • Securely tighten the valve stem cap in torque is as follows : Gas side (Ø12.7 mm) 50 to 62 N•m (5.0 to 6.2 kgf•m)
  • Page 86 10-4-8. Check and Test Operation 10-4-9. Miswiring (Mispiping) Check Make sure that the wiring and piping for each room NOTE have the same alphabetical codes (A, B, C, D). For R410A, use the leak detector exclusively Connect and secure the power cord. manufactured for HFC refrigerant (R410A, R134a, etc.).
  • Page 87 : LED ON, : LED OFF, : LED Flash Description D800 D801 D802 D803 D804 D805 Before check Normal operation (no error) Checking A unit During check Checking B unit Checking C unit Normal operation (no error) Trouble in unit A Trouble in unit B Trouble in unit C Trouble in unit A and B...
  • Page 88: Test Operation

    10-5. Test Operation 10-5-4. Select Switch on Remote Controller 10-5-1. Gas Leak Test • If two indoor units are installed in the same room or adjoining rooms, when the user tries to operate only Check the flare nut connections for gas leaks with a one unit, both units may receive the same remote gas leak detector and / or soapy water.
  • Page 89: Removing The Main Parts

    10-6. Removing the Main Parts 10-6-2. Removing the Moving Panel 1) Open the moving panel, and support the moving Normally, the front panel, moving panel, and air flow panel by the panel support on the right side. louvres do not need to be removed. 2) Remove the lead wire cover on the right side.
  • Page 90 10-6-3. Attaching the Moving Panel 3) Insert a flathead screwdriver into the gap of the louver fixture on the right and left ends of the 1) Grasp both sides of the moving panel, and insert vertical air flow louver, and turn in the the right-side joint first.
  • Page 91: How To Diagnose The Trouble

    11. How to Diagnose the Trouble The pulse modulating circuits are mounted to both indoor and outdoor units. Therefore, diagnose troubles according to the trouble diagnosis 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 WARNING Troubleshooting Procedure...
  • Page 92: First Confirmation

    11-1. First Confirmation 11-1-3. Operation Which is not a Trouble (Program Operation) 11-1-1. Confirmation of Power Supply For controlling the air conditioner, the program Confirm that the power breaker operates (ON) operations are built in the microcomputer as described normally. in the following table.
  • Page 93: Primary Judgment

    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. For any trouble occurred at the outdoor unit side, detailed diagnosis is possible by 6-serial LED on the control P.C.
  • Page 94: Self-Diagnosis By Remote Controller (Check Code)

    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 95 11-4-2. Check Code 1. After servicing, push the START / STOP button to return to the normal mode. 2. After servicing by the check code, turn off breaker of the power supply, and turn on breaker of the power supply again so that memory in the microcomputer returns the initial status.
  • Page 96 Block distinction Operation of diagnosis function Judgment and action Check Check Block Cause of operation conditioner Remarks code code status All off Displayed when Outdoor P.C. Inverter over-current Even if trying operation again, all error is detected. board protective circuit operates. operations stop immediately.
  • Page 97 11-5. Judgment of Trouble by Symptom 11-5-1. Indoor Unit (Including Remote Controller) (1) Power of indoor unit does not turned on <Primary check> 1. Is the supply voltage normal? 2. Is the normal voltage provided to the outdoor unit? Operation 3.
  • Page 98 (3) Only the indoor motor fan does not operate <Primary check> 1. Is it possible to detect the power supply voltage (AC220–240V) between • and , 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 99 (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 100 (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. Operation lamp on indoor Push the START/STOP button. unit is not indicated.
  • Page 101 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? 2) Confirm that transmission from indoor unit to outdoor unit is correctly performed based upon the following diagram.
  • Page 102 Service Support Function (LED Display, Switch Operation) 1. Outline A various setup and operation check can be performed by DIP switches at 2 positions (SW801, SW802) and the pushdown button switches (SW800) on the outdoor control P.C. board MCC-5071. Operation part Part No.
  • Page 103 11-6. Trouble Diagnosis by Outdoor LED For the outdoor unit, the self-diagnosis is possible by LED (Green) and five LEDs (Red). ∗ LED (Green)(D800) and LEDs (Red)(D801 to D805) are provided on the control P.C. board MCC-5071. 1. If there is an error, LED (Red or Green) goes on or flashes according to the error as described in the below table.
  • Page 104 Check Outdoor Check and troubleshooting code LED display (Item without special mention indicates part of outdoor unit.) [07] [Case thermo operation, Power supply error] Confirm power supply Is AC mains voltage correct? (198 to 264V) construction. etc. Are CN609 of P.C. board MCC-1571 Correct connector.
  • Page 105 Check Outdoor Check and troubleshooting code LED display (Item without special mention indicates part of outdoor unit.) ∗ There is a possibility that it is one of the following errors. [18] Confirm LED on outdoor P.C. board to judge which error it is. Heat exchanger temp.
  • Page 106 Check Outdoor Check and troubleshooting code LED display (Item without special mention indicates part of outdoor unit.) ∗ There is a possibility that it is one of the following errors. [1C] Confirm LED on outdoor P.C. board to judge which error it is. Compressor system error, Compressor lock, Gas side temp.
  • Page 107 Check Outdoor Check and troubleshooting code LED display (Item without special mention indicates part of outdoor unit.) [1C] [A room gas side temp. sensor (TGa) error] (Continue Is connection of CN604 Correct connector. on P.C.B MCC-5071 correct? Sensor error → Replace. Is resistance value of TGa sensor correct? Check outdoor P.C.B.
  • Page 108 Check Outdoor Check and troubleshooting code LED display (Item without special mention indicates part of outdoor unit.) [1C] [Communication error between MCUs] (Continued) Are connections of CN802 on P.C.B MCC-5071 Correct connection. and CN802 on P.C.B MCC-1571 correct? Check outdoor P.C. Boards. Defect →...
  • Page 109 Check Outdoor Check and troubleshooting code LED display (Item without special mention indicates part of outdoor unit.) [1F] [Compressor break down] Is AC mains voltage correct? Check wiring construction. (198 to 264V) Ask repair of power supply. Is wire connection correct? Check wire connection Compressor lead (Board side, Compressor Side),...
  • Page 110: Troubleshooting

    11-7. Troubleshooting 11-7-1. How to Check Whether the Air Purifier is Good or Not 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).
  • Page 111 11-8. Inspection of the Main Parts 11-8-1. Inspection of the P.C. Board (Indoor Unit) CAUTION (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. board, hold the edge of the P.C. board and do not apply force to the parts. 3) When connecting or disconnecting the connectors on the P.C.
  • Page 112 (3) Check procedures Table 11-8-1 Procedure Check points Causes Turn off the power supply breaker Check whether or not the fuse Impulse voltage was applied or the and remove the P.C. board (F01) is blown. indoor fan motor short-circuited. assembly from electronic parts base.
  • Page 113 11-8-2. P.C. Board Layout +12V [1] Sensor characteristic table : Discharge temp. sensor : Room temp. sensor TC, TCj : Heat exchanger temp. sensor : Outdoor temp. sensor : Outdoor heat exchanger temp. sensor : Suction temp. sensor TGa to TGc : Gas side temp. sensor TA, TC, TCj, TO, TE, TS, TGa to TGc Temperature (°C) –...
  • Page 114 11-8-3. Indoor Unit (Other Parts) Part name Check 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...
  • Page 115: How To Simply Judge Whether Outdoor Fan Motor Is Good Or Bad

    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 116 <MCC-1571> Reactor connecting connectors Electrolytic capacitors (760μF/400V) Lead wire for grounding P09 (Black) Power supply connecting lead wire P01 (Red) P02 (White) Compressor Power supply protective fuse output terminals F01 (250V, 25A) CN200 CN201 CN202 Inter-unit wire protective fuse F03 (250V, 10A) Fan motor output CN300 Inter-unit wire connector...
  • Page 117 <MCC-5071> Indoor/Outdoor communication wire Power supply Protective fuse connecting connector F01 (250V, 3.15A ,plastic case) CN01 (Red) Lead wire for Indoor/ Indoor/Outdoor communication signal LED D502, D511, D517 Outdoor communication (Orange,Indoor → Outdoor) P01 (Yellow) D501, D508, D515 P02 (Red) (Green,Outdoor →...
  • Page 118: How To Replace The Main Parts

    12. How to Replace the Main Parts 12-1. Indoor Unit WARNING Since high voltages is applied to electrical parts, turn off the power without fail before starting replacement work. After repairs have been completed and the front panel and cabinet have been attached, perform test run and check for smoke, unusual sound, and other abnormalities.
  • Page 119 12-1-2. Fixing Frame Assembly 12-1-3. Electrical Control Cover Detached 1) Detach the two air filters. 1) Perform work of Detachment 12-1-1. Removing 2) Disconnect the plasma ion charger connector and the Front Panel and Moving Panel. the earth lead (black). (The earth lead is connected 2) Remove the screw beside the screw that secures to the heat exchanger with a screw.) the electrical control box assembly.
  • Page 120 12-1-4. Microcomputer P.C. Board 12-1-5. Louver 1) Remove the electrical control cover screw. 1) Open the moving panel, and support it with the 2) Detach the metal electrical control cover. panel support. 3) Disconnect the connectors from the P.C. board. 2) Open the vertical air flow louver.
  • Page 121: Heat Exchanger

    12-1-6. Heat Exchanger 12-1-7. Fan Motor 1) Perform work of Detachment 12-1-1. Removing 1) Perform work of Detachment 12-1-1. Removing the Front Panel and Moving Panel and 12-1-2. the Front Panel and Moving Panel and Fixing Frame Assembly. 12-1-3. Electrical Control Cover Detached. 2) Remove the pipe holder at the rear of the unit.
  • Page 122 12-1-8. Cross Flow Fanr Keep 27mm distance between the support shaft at the rear centre of the unit and the 1) Perform work of Detachment 11-1-1. Removing the immediate right joint-section of the cross Front Panel and Moving Panel and 11-1-2. Fixing flow fan.
  • Page 123 12-2. Plasma Ion Charger 12-2-3. High-voltage Power Supply Unit and Dischanger Unit 12-2-1. Common Procedure 1) Perform work of Detachment 12-1-1. Removing 1) Perform work of Detachment 12-1-1. Removing the Front Panel and Moving Panel. the Front Panel and Moving Panel for the indoor 2) Disconnect the 4P connector on the high-voltage unit.
  • Page 124 12-3. Outdoor Unit No. Part name Procedure Remarks Common Front panel CAUTION procedure Never forget to put on the gloves at working time; otherwise an injury will be caused by the parts etc. 1. Detachment 1) Stop operation of the air conditioner, and turn off the switch of the breaker.
  • Page 125 No. Part name Procedure Remarks Discharge 1. Detachment port cabinet 1) Perform work of Detachment 1 of 1. 2) Take off screws for the discharge port cabinet and the partition plate. (ST1T Ø4 × 8, 3 pcs.) Heat exchanger 3) Take off screws for the discharge port cabinet and the Motor base Fin guard bottom plate.
  • Page 126 No. Part name Procedure Remarks Inverter 1) Perform works Detachment 1 of 1 and 3. Fixing Inverter fixed board assembly screw WARNING WARNING Never disassemble the inverter until 5 minutes after the power supply was turned off because there is a fear that an electric shock may occur.
  • Page 127 No. Part name Procedure Remarks Inverter 8) Remove the soundproof plate (upper). Soundproof plate (upper) assembly 9) Remove the terminal cover of the compressor and then (Continued) remove the compressor lead of the compressor. 10) Pull up the inverter assembly and then remove it. Reactor cover side Compressor lead Case thermo...
  • Page 128 No. Part name Procedure Remarks CDB P.C. 1) Perform works of Detachment 1 of 1 and 4) of 4. Power supply Terminal relay board connector connector CAUTION CDB P.C. board Never disassemble the inverter until 5 minutes after the power supply was turned off because there is a fear that an electric shock may occur.
  • Page 129 No. Part name Procedure Remarks DI P.C. 7) Remove the earth wire of DI P.C. board. (Truss head B tight Fixing screws Earth screw board screw Ø4 × 6, 1 pc.). for element (Continued) 8) Take off fixing screws for DI P.C. board. (Flange nut to fix (7 positions) element Ø3 ×...
  • Page 130 No. Part name Procedure Remarks Replacement 1. Reactor to be attached to the inverter assembly Reactor Reactor cover of reactor 1) Perform works of Detachment 1 of 1 and 4. relay connector 2) Remove the relay connector of the reactor. 3) Remove the reactor cover.
  • Page 131 No. Part name Procedure Remarks Fan motor 1) Perform works of Detachment 1 of 1 and 2. Propeller fan 2) Take off flange nut which fixes the fan motor and the propeller fan. Loosened by ∗ The flange nut is loosened by turning it clockwise. turning clockwise (To tighten the flange nut, turn it counterclockwise.) 3) Remove the propeller fan.
  • Page 132 No. Part name Procedure Remarks Compressor 1. Removal of defective compressor assembly 1) Perform works of Detachment 1 of 1. 2) Recover the refrigerant gas from the outdoor unit. 3) Perform works of 2 , 3 and 4. 4) Remove the soundproof plate and TD sensor. 5) Take off fixing screw for the anchor board and the partition plate.
  • Page 133 No. Part name Procedure Remarks Fan guard 1. Detachment Discharge 1) Perform work of Detachment 1 of 1 and 2. Bell mouth port cabinet CAUTION Work on the cardboard, cloth, and etc. in order to prevent damage on the product. 2) Take off the discharge port cabinet and put it as the fan guard side directs downward.
  • Page 134 No. Part name Procedure Remarks ∗ Attachment 4-way valve coil Mount 4-way valve coil so that the label side directs upper side of the cabinet. Detail A Detail A 4-way valve unit Label 4-way valve coil 1. Detachment Coil: Blue 1) Perform work of Detachment 1 of 1 .
  • Page 135 No. Part name Procedure Remarks ∗ Attachment TE sensor (Outdoor Mount TE sensor on the straight part of the condenser Detail F heat discharge port pipe so that the lead wire directs upward and exchange the sensor directs the liquid store tank. temperature) Detail C ∗...
  • Page 136 No. Part name Procedure Remarks ∗ Attachment TG sensor TGc: Green Mount these sensors on the directly arranged part of the TGb: Red header connecting pipe at gas side so that the cabinet turns TGa: Yellow toward the front side and the sensors turn toward upper cabinet.
  • Page 137 No. Part name Procedure Remarks ∗ Bind TS sensor, TE sensor and TO sensor with the bundling Sensor Inverter fixing board wiring band. process ∗ Pass TE sensor and TO sensor through upper part of the (Continued) inverter fixing board and then bind them with the bundling band.
  • Page 138: Exploded Views And Parts List

    13. Exploded Views and Parts List 13-1. Indoor Unit RAS-M10PKVP-E, RAS-M13PKVP-E, RAS-M16PKVP-E, RAS-M18PKVP-E ∗ The parts in the following parts list are conformed to RoHS. Therefore be sure to use the following parts for repairing and replacing. Location Location Part No.
  • Page 139 13-2. Microcomputer P.C. Board RAS-M10PKVP-E, RAS-M13PKVP-E, RAS-M16PKVP-E, RAS-M18PKVP-E ∗ The parts in the following parts list are conformed to RoHS. Therefore be sure to use the following parts for repairing and replacing. Location Location Part No. Description Part No. Description...
  • Page 140 13-3. Outdoor Unit RAS-3M26UAV-E – 140 –...
  • Page 141 4314N025 Coil, PMV, UKV-A038 43196113 Bushing 4301L506 Mark, TOSHIBA, IMS No. 24 Coil, P.M.V. : For standardization of the servicing parts, one type only is provided. Therefore, color of the connector may be different in replacement work. – 141 –...
  • Page 142: Inverter Assembly

    13-4. Inverter Assembly RAS-3M26UAV-E1 ∗ The parts in the following parts list are conformed to RoHS. Therefore be sure to use the following parts for repairing and replacing. Location Location Part No. Description Part No. Description 43160607 Terminal Block, 3P (20A) 43155188 Reactor, CH-56-2Z-T 43160611...
  • Page 143 Copyright © 2011 TOSHIBA CARRIER CORPORATION, ALL Rights Reserved.

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