Toshiba RAS-M10PKVP-E Service Manual
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Toshiba RAS-M10PKVP-E Service Manual

Toshiba RAS-M10PKVP-E Service Manual

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FILE NO. A08-016

SERVICE MANUAL

AIR-CONDITIONER
SPLIT TYPE
RAS-M10PKVP-E, RAS-M13PKVP-E,
RAS-M16PKVP-E, RAS-M18PKVP-E /
RAS-M10PKVP-ND, RAS-M13PKVP-ND,
RAS-M16PKVP-ND, RAS-M18PKVP-ND /
RAS-3M26GAV-E1, RAS-4M27GAV-E1
R410A
PRINTED IN JAPAN, Apr, 2009
ToMo

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Summary of Contents for Toshiba RAS-M10PKVP-E

  • Page 1: Service Manual

    FILE NO. A08-016 SERVICE MANUAL AIR-CONDITIONER SPLIT TYPE RAS-M10PKVP-E, RAS-M13PKVP-E, RAS-M16PKVP-E, RAS-M18PKVP-E / RAS-M10PKVP-ND, RAS-M13PKVP-ND, RAS-M16PKVP-ND, RAS-M18PKVP-ND / RAS-3M26GAV-E1, RAS-4M27GAV-E1 R410A PRINTED IN JAPAN, Apr, 2009 ToMo...

  • Page 2: Table Of Contents

    CONTENTS 1. SAFETY PRECAUTIONS ................3 2. SPECIFICATIONS..................5 3. REFRIGERANT R410A ................27 4. CONSTRUCTION VIEWS ................ 35 5. WIRING DIAGRAM .................. 37 6. SPECIFICATIONS OF ELECTRICAL PARTS ......... 39 7. REFRIGERANT CYCLE DIAGRAM ............40 8. CONTROL BLOCK DIAGRAM ..............48 9.

  • 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 • Ask an authorized dealer or qualified installation professional to install/maintain the air conditioner. INAPPROPRIATE SERVICING MAY RESULT IN WATER LEAKAGE, ELECTRIC SHOCK OR FIRE.

  • 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: Heat Pump Models

    2-1. Specifications <Heat Pump Models> RAS-M10PKVP-E,RAS-M13PKVP-E,RAS-M16PKVP-E,RAS-M18PKVP-E / RAS-4M27GAV-E1,RAS-3M26GAV-E1 Indoor RAS- M10PKVP-E, M13PKVP-E, M16PKVP-E, M18PKVP-E Unit model Outdoor RAS- 4M27GAV-E1 3M26GAV-E1 Cooling Capacity (kW) Cooling Capacity range (kW) 1.4-9.2 1.4-8.9 Heating Capacity (kW) Heating Capacity range (kW) 0.8-11.0 0.8-10.8 Power supply...
  • Page 7 <Cooling Only Models> RAS-M10PKVP-ND,RAS-M13PKVP-ND,RAS-M16PKVP-ND,RAS-M18PKVP-ND / RAS-4M27GAV-E1,RAS-3M26GAV-E1 Indoor RAS- M10PKVP-ND, M13PKVP-ND, M16PKVP-ND, M18PKVP-ND Unit model Outdoor RAS- 4M27GAV-E1 3M26GAV-E1 Cooling Capacity (kW) Cooling Capacity range (kW) 1.4-9.2 1.4-8.9 Heating Capacity (kW) Heating Capacity range (kW) 0.8-11.0 0.8-10.8 Power supply 220-240V 1Ph 50Hz / 220V 1Ph 60Hz Unit model RAS- M10PKVP-ND...
  • Page 8 2-2. Specifications of Performance When Each Indoor Unit is Combined with Other Unit Outdoor Unit : RAS-3M26GAV-E1 <Cooling/220V> Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 3.69 1 unit — —...
  • Page 9 Outdoor Unit : RAS-3M26GAV-E1 <Cooling/230V> Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 3.53 1 unit — — — — — — (1.4 – 2.5) (640 – 700) (3.52 – 3.58) 3.71 —...
  • Page 10 Outdoor Unit : RAS-3M26GAV-E1 <Cooling/240V> Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 3.39 1 unit — — — — — — (1.4 – 2.5) (640 – 700) (3.38 – 3.43) 3.55 —...
  • Page 11 Outdoor Unit : RAS-3M26GAV-E1 <Heating/220V> Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 4.41 1 unit — — — — — — (0.8 – 3.7) (300 – 1400) (1.87 – 6.49) 1500 6.96 —...
  • Page 12 Outdoor Unit : RAS-3M26GAV-E1 <Heating/230V> Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 4.21 1 unit — — — — — — (0.8 – 3.7) (300 – 1400) (1.79 – 6.21) 1500 6.65 —...
  • Page 13 Outdoor Unit : RAS-3M26GAV-E1 <Heating/240V> Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 4.04 1 unit — — — — — — (0.8 – 3.7) (300 – 1400) (1.71 – 5.95) 1500 6.38 —...
  • Page 14 Outdoor Unit : RAS-4M27GAV-E1 <Cooling/220V> Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 3.69 1 unit — — — — — — (1.4 – 2.5) (640 – 700) (3.68 – 3.74) 3.87 —...
  • Page 15 <Cooling/220V> (Continued) Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 2450 11.36 4 units 1.95 1.95 1.95 1.95 (4.0 – 8.7) (930 – 2800) (4.70 – 12.99) 2450 11.36 2.42 1.79 1.79 1.79...
  • Page 16 Outdoor Unit : RAS-4M27GAV-E1 <Cooling/230V> Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 3.53 1 unit — — — — — — (1.4 – 2.5) (640 – 700) (3.52 – 3.58) 3.71 —...
  • Page 17 <Cooling/230V> (Continued) Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 2450 10.87 4 units 1.95 1.95 1.95 1.95 (4.0 – 8.7) (930 – 2800) (4.49 – 12.42) 2450 10.87 2.42 1.79 1.79 1.79...
  • Page 18 Outdoor Unit : RAS-4M27GAV-E1 <Cooling/240V> Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 3.39 1 unit — — — — — — (1.4 – 2.5) (640 – 700) (3.38 – 3.43) 3.55 —...
  • Page 19 <Cooling/240V> (Continued) Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 2450 10.42 4 units 1.95 1.95 1.95 1.95 (4.0 – 8.7) (930 – 2800) (4.31 – 11.90) 2450 10.42 2.42 1.79 1.79 1.79...
  • Page 20 Outdoor Unit : RAS-4M27GAV-E1 <Heating/220V> Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 4.17 1 unit — — — — — — (0.8 – 3.7) (300 – 1340) (1.87 – 6.22) 1450 6.73 —...
  • Page 21 <Heating/220V> (Continued) Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 2100 9.74 4 units 2.20 2.20 2.20 2.20 (2.2 – 10.8) (450 – 2810) (2.56 – 13.03) 2100 9.74 2.91 1.96 1.96 1.96...
  • Page 22 Outdoor Unit : RAS-4M27GAV-E1 <Heating/230V> Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 3.99 1 unit — — — — — — (0.8 – 3.7) (300 – 1340) (1.79 – 5.94) 1450 6.43 —...
  • Page 23 <Heating/230V> (Continued) Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 2100 9.32 4 units 2.20 2.20 2.20 2.20 (2.2 – 10.8) (450 – 2810) (2.45 – 12.47) 2100 9.32 2.91 1.96 1.96 1.96...
  • Page 24 Outdoor Unit : RAS-4M27GAV-E1 <Heating/240V> Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 3.83 1 unit — — — — — — (0.8 – 3.7) (300 – 1340) (1.71 – 5.70) 1450 6.16 —...
  • Page 25 <Heating/240V> (Continued) Indoor unit Unit Capacity Power supply Operating Cooling capacity Power consumption Operating current Outdoor noise status (kW) (dB) 2100 8.93 4 units 2.20 2.20 2.20 2.20 (2.2 – 10.8) (450 – 2810) (2.34 – 11.95) 2100 8.93 2.91 1.96 1.96 1.96...

  • Page 26: Operation Characteristic Curve

    2-2-1. Operation Characteristic Curve <Cooling> <Heating> • Conditions • Conditions 220V Indoor : DB27˚C/WB19˚C Indoor : DB20˚C 220V Outdoor : DB35˚C Outdoor : DB7˚C / WB6˚C Air flow : High Air flow : High Pipe length: 5m x 4 Pipe length : 5m x 4 4 units operating 4 units operating 240V...

  • Page 27: 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 room, it is necessary to exercise care so that, The working pressure of the new refrigerant R410A even when refrigerant leaks, its concentration is 1.6 times higher than conventional refrigerant...
  • Page 28 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 29 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 30 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 31 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 32: 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 power switch.
  • Page 33 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 34 2. Characteristics required for flux 3-5-3. Brazing • Activated temperature of flux coincides with As brazing work requires sophisticated techniques, the brazing temperature. experiences based upon a theoretical knowledge, it must be performed by a person qualified. • Due to a wide effective temperature range, flux is hard to carbonize.

  • Page 35: Construction Views

    4. CONSTRUCTION VIEWS 4-1. Indoor Unit RAS-M10PKVP-E, RAS-M13PKVP-E, RAS-M16PKVP-E, RAS-M18PKVP-E RAS-M10PKVP-ND, RAS-M13PKVP-ND, RAS-M16PKVP-ND, RAS-M18PKVP-ND (At the time of operation) 296.2 Moving panel Plasma ion charger Front panel (At the time of a stop) Piping port from Air filter Piping port from...

  • Page 36: Outdoor Unit

    4-2. Outdoor Unit RAS-3M26GAV-E1, RAS-4M27GAV-E1 Detailed A leg part 2-dia.12 × 17 U-shape hole (for dia.8-10 anchor bolt) A leg part Outside line of product Detailed B leg part Outside line of product B leg part 2-dia.12 × 17 long hole (for dia.8-10 anchor bolt) Fan guard dia.510...

  • Page 37: Wiring Diagram

    5. WIRING DIAGRAM 5-1. Indoor Unit RAS-M10PKVP-E, RAS-M13PKVP-E, RAS-M16PKVP-E, RAS-M18PKVP-E RAS-M10PKVP-ND, RAS-M13PKVP-ND, RAS-M16PKVP-ND, RAS-M18PKVP-ND Air purifier electrode 3 2 1 Indoor terminal block Power supply Micro SW Sheet metal GRN&YEL CN501 CN03 CN01 CN21 CN401 CN382 (WHI) (RED) DC5V (TC)
  • Page 38 5-2. Outdoor Unit RAS-3M26GAV-E1, RAS-4M27GAV-E1 Thermostat for compressor CN802 P501 T03 CT Compressor P500 CN20 4-way valve coil CN21 IGBT CN22 T04 CT module CN705 CN608 Power supply circuit Fan motor (For P.C. Board) – Q200 F04, Fuse CN301 CN607 T3.15A 250V SUB P.C.

  • Page 39: 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 RAS-M10PKVP-ND, RAS-M13PKVP-ND, RAS-M16PKVP-ND, RAS-M18PKVP-ND Parts name Type Specifications E: ICF-340-30-4 Fan motor (for indoor unit) DC280–340V, 30W ND: ICF-340-30-4A Room temp. sensor (TA-sensor) ( – ) 10kΩ at 25°C Heat exchanger temp.

  • Page 40: Refrigerant Cycle Diagram

    7. REFRIGERANT CYCLE DIAGRAM RAS-M10PKVP-E, RAS-M13PKVP-E, RAS-M16PKVP-E, RAS-M18PKVP-E / RAS-3M26GAV-E1 Temp. measurement Indoor unit A C room B room C room B room Evaporator Cross flow fan Per 1 unit Max. : 25m Connecting pipe Min. : 2m Thickness : 0.8mm Connecting pipe Ø12.7 :...
  • Page 41 RAS-M10PKVP-E, RAS-M13PKVP-E, RAS-M16PKVP-E, RAS-M18PKVP-E / RAS-4M27GAV-E1 Temp. measurement Indoor unit A D room C room B room D room C room B room Evaporator Cross flow fan Per 1 unit Max. : 25m Min. : 2m Connecting pipe Thickness : 0.8mm...

  • Page 42: Operation Data

    7-2. Operation Data Outdoor Unit : RAS-4M27GAV-E1 <Cooling> Temperature Standard Heat exchanger No. of Compressor Indoor unit Indoor Outdoor condition pressure pipe temperature operating revolution units (rps) Indoor Outdoor P (MPa) T1 (°C) T2 (°C) 1 unit — — — 0.9 to 1.1 11 to 13 44 to 46...
  • Page 43 <Cooling> (Continued) Temperature Standard Heat exchanger No. of Compressor Indoor unit Indoor Outdoor condition pressure pipe temperature operating revolution units (rps) Indoor Outdoor P (MPa) T1 (°C) T2 (°C) 4 units 0.9 to 1.1 12 to 14 51 to 53 High 0.9 to 1.1 12 to 14...
  • Page 44 Outdoor Unit : RAS-4M27GAV-E1 <Heating> Temperature Standard Heat exchanger No. of Compressor Indoor unit Indoor Outdoor condition pressure pipe temperature operating revolution units (rps) Indoor Outdoor P (MPa) T1 (°C) T2 (°C) 1 unit — — — 2.1 to 2.3 36 to 38 3 to 5 High...
  • Page 45 <Heating> (Continued) Temperature Standard Heat exchanger No. of Compressor Indoor unit Indoor Outdoor condition pressure pipe temperature operating revolution units (rps) Indoor Outdoor P (MPa) T1 (°C) T2 (°C) 4 units 2.0 to 2.2 33 to 35 –2 to 0 High 2.0 to 2.2 33 to 35...
  • Page 46 Outdoor Unit : RAS-3M26GAV-E1 <Cooling> Temperature Standard Heat exchanger No. of Compressor Indoor unit Indoor Outdoor condition pressure pipe temperature operating revolution units (rps) Indoor Outdoor P (MPa) T1 (°C) T2 (°C) 1 unit — — — 0.9 to 1.1 11 to 13 44 to 46 High...
  • Page 47 Outdoor Unit : RAS-3M26GAV-E1 <Heating> Temperature Standard Heat exchanger No. of Compressor Indoor unit Indoor Outdoor condition pressure pipe temperature operating revolution units (rps) Indoor Outdoor P (MPa) T1 (°C) T2 (°C) 1 unit — — — 2.0 to 2.2 36 to 38 3 to 5 High...

  • Page 48: Control Block Diagram

    8. CONTROL BLOCK DIAGRAM 8-1. Indoor Unit RAS-M10PKVP-E, RAS-M13PKVP-E, RAS-M16PKVP-E, RAS-M18PKVP-E RAS-M10PKVP-ND, RAS-M13PKVP-ND, RAS-M16PKVP-ND, RAS-M18PKVP-ND Indoor Unit Control Unit M.C.U. Humidity sensor Louver Functions Motor Heat Exchanger Sensor (Tcj) • Cold Draft Preventing Function Louver Motor Heat Exchanger Sensor (Tc) •...

  • Page 49: Outdoor Unit (Inverter Assembly)

    8-2. Outdoor Unit (Inverter Assembly) RAS-3M26GAV-E1, RAS-4M27GAV-E1 Outdoor air temp. sensor Gas side pipe temp. sensor Suction temp. sensor Evaporator temp. sensor Discharge temp. sensor MCC-818 (SUB-P.C. B) A unit A unit P.M.V. M.C.U send/receive circuit • Inverter outdoor frequency control B unit P.M.V.

  • Page 50: Operation Description

    9. OPERATION DESCRIPTION • Detection of inverter input current and current 9-1. Outline of Air Conditioner Control 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 51 9-2. Operation Description 1. Basic operation ........................52 1. Operation control ....................... 52 2. Operating mode selection when performing 2-room operation ......... 53 3. Cooling/Heating operation ....................53 4. AUTO operation ......................... 54 5. DRY operation ........................54 2. Indoor fan motor control ......................55 <In cooling operation>...

  • Page 52: Basic Operation

    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 53: 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. 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 54: Auto Operation

    Item Operation flow and applicable data, etc. Description 1. Basic 4. AUTO operation 1) Detects the room temperature (Ta) when operation the operation started. Selection of operation mode As shown in the following figure, the operation starts by 2) Selects an operation mode from Ta in selecting automatically the status of room temperature the left figure.

  • Page 55: Indoor Fan Motor Control

    *8 : Fan speed = (H –L+) × 1/4 + L+ W2 (20 seconds) to 0 rpm (Linear approximation from M+ and L) (40 seconds). (Table 1) Indoor fan air flow rate (Cooling, Dry) RAS-M10PKVP-E RAS-M13PKVP-E RAS-M16PKVP-E RAS-M18PKVP-E RAS-M10PKVP-ND RAS-M13PKVP-ND...

  • Page 56: In Heating Operation> (Heat Pump Model)

    Item Operation flow and applicable data, etc. Description 2. Indoor fan <In heating operation> (Heat pump model) 1) When setting the fan speed to L, motor control L+, M, M+ or H on the remote (This operation controls the fan speed at indoor unit side.) controller, the operation is The indoor fan (cross flow fan) is operated by the phase performed with the constant speed...
  • Page 57 • When 25 minutes or more passed after operation start • Room temp. ≥ Set temp. –3.5°C FAN Manual • Room temp. < Set temp. –4°C (Table 2) Indoor fan air flow rate (Heating) RAS-M10PKVP-E RAS-M13PKVP-E RAS-M16PKVP-E RAS-M18PKVP-E RAS-M10PKVP-ND RAS-M13PKVP-ND...

  • Page 58: Outdoor Fan Motor Control

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

  • Page 59: Capacity Control

    Item Operation flow and applicable data, etc. Description 4. Capacity 1) Four indoor units from A to D determine the respective instruction revolutions from the differ- control ence between the remote controller setting temperature (Ts) and the indoor temperature (Ta), and transmit this to the outdoor unit.

  • Page 60: Release Protective Control By Temperature Of Indoor Heat Exchanger

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

  • Page 61: Winding/Coil Heating Control

    Item Operation flow and applicable data, etc. Description 7. Winding/Coil When the outdoor temperature is low, the windings/ Winding/Coil heating is performed when heating control coils are heated to ensure compressor reliability. the following conditions are met. Condition 1 : When the discharge sensor temperature (Td) is less than 30°C.

  • Page 62: Louver Control

    Item Operation flow and applicable data, etc. Description 9. Louver control This function controls the air direction of the indoor unit. 1) Louver • The position is automatically controlled according to the operation mode (COOL/HEAT). position • 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 63: Sleep Mode Operation

    Item Operation flow and applicable data, etc. Description 10. 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 64: Temporary Operation

    Item Operation flow and applicable data, etc. Description 11. Temporary Pushing [RESET] button starts the temporary 1) When pushing [RESET] button, the operation operation of [AUTO] operation. When keeping temporary [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 65: Description

    Item Operation flow and applicable data, etc. Description 12. Air purifying 2. Description control Error is determined to have occurred (indicated by the PURE indicator (Orange) in the following two cases. Air purifying operation 1) When the panel switch has been set to OFF by the opening of the air inlet grill, Operation indicator ON etc.

  • Page 66: Discharge Temperature Control

    Item Operation flow and applicable data, etc. Description 13. Discharge 1. Purpose temperature This function detects error on the control refrigerating cycle or error on the compressor, and performs protective control. 2. Operation Td value Control operation • Control of the compressor speed Judges as an error and stops the compressor.

  • Page 67: Clean Operation

    Item Operation flow and applicable data, etc. Description 15. 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 conditioner clean. Unit now performing cooling or dry operation Clean operation When the cooling or dry operation shuts...

  • Page 68: Clean Operation Cancel

    Item Operation flow and applicable data, etc. Description 16. Clean operation Setting the clean operation cancel CAUTION cancel * J231 will be near the MCU so take steps to ensure that it will Add J231 of the wireless unit P.C. board assembly. not be exposed to excessive ∗...

  • Page 69: Select Switch On Remote Controller

    Item Operation flow and applicable data, etc. Description 17. Select switch on 1. Purpose remote controller This operation is to operate only one indoor unit using one remote controller. 2. Description Push the operation button When operating one indoor unit in a on the remote controller.

  • Page 70: Set Temperature Correction

    Item Operation flow and applicable data, etc. Description 18. 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. Jumper wire J804 is wide due to the installation condition, etc, J805 the set temp.

  • Page 71: 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 72: 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 73: 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 74: 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 displayed by pushing the button. Transmission mark (MEMORY) indicator This transmission mark indicates when the remote Flashes for 3 seconds when the MEMO button is controller transmits signals to the indoor unit.

  • Page 75: 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 opera- tion mode as described below.

  • Page 76: Installation Procedure

    10. INSTALLATION PROCEDURE 10-1. Safety Cautions For the rear left and left piping The indoor unit shall be installed Hook so that the top of the indoor unit 70 mm or more is positioned at least 2 m high. Hook Wall Also, avoid putting anything [1] Installation plate...
  • Page 77 Part Code Parts name Q’ty Refrigerant piping Liquid side Gas side Indoor unit name (Outer diameter) (Outer diameter) RAS-M10PKVP-E, RAS-M10PKVP-ND 6.35 mm 9.52 mm 1 ea. RAS-M13PKVP-E, RAS-M13PKVP-ND RAS-M16PKVP-E, RAS-M16PKVP-ND 6.35 mm 12.7 mm RAS-M18PKVP-E, RAS-M18PKVP-ND Shield pipe (for extension drain hose) (polyethylene foam, 8 mm thick)
  • Page 78 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 79: Remote Controller

    10-3. Indoor Unit 10-3-2. Drilling and Mounting Installation Plate 10-3-1. Installation Place u Drilling • A place which provides enough spaces around the indoor unit as shown in the diagram. When installing the refrigerant pipes from the rear. • A place where there are no obstacle near the air inlet and outlet.
  • Page 80 u Mounting the installation plate directly on 10-3-3. Electrical Work 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 2. Prepare a power source for the exclusive use of by screws with the upper and lower catches.
  • Page 81 10-3-4. Wiring Connection u Connecting cable Wiring the connecting cable can be carried out without removing the front panel. Termin l cov r Screw Terminal block 1. Remove the air inlet grille. Open the air inlet grille upward and pull it toward you.
  • Page 82 10-3-5. Piping and Drain Hose Installation 4) Attach the drain cap • Insert hexagonal wrench (4 mm). u 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 4 mm Rear left...
  • Page 83 u Piping on the bottom right or the bottom left CAUTION • After making slits on the front panel with a knife or similar tool, cut them out with a pair of • Bind the auxiliary pipes (two) and connecting nippers or an equivalent tool.
  • Page 84 10-3-6. Indoor Unit Installation 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 the upper hooks. NOTE 2.
  • Page 85 10-4. Outdoor Unit CAUTION 10-4-1. Accessory and Installation Parts 1. Install the outdoor unit without anything blocking the air discharging. 2. When the outdoor unit is installed in a place exposed always to a strong wind like a coast or ...
  • Page 86 10-4-5. Refrigerant Piping Connection • Flaring size : A (Unit : mm) CAUTION Fig. 10-4-4 KEEP IMPORTANT 4 POINTS FOR PIPING WORK - 0.4 Outer dia. of copper pipe 1. Keep dust and moisture from entering the pipes. R410A 2. Tight connection (between pipes and unit) 6.35 3.

  • Page 87: Tightening Connection

    u How to remove the side panel 1. Piping connections to the outdoor unit should be arranged in the sequence A, B, C, D starting 1. Remove 3 screws of the side panel. from the bottom. 2. Pull the side panel downward. (For each piping connection, the gas pipe is on the bottom and the liquid pipe is on the top.) 2.

  • Page 88: Air Purge

    • Tightening torque of flare pipe 10-4-7. Evacuating The pressure of R410A is higher than R22. After the piping has been connected to all indoor unit(s), (Approx. 1.6 times) you can perform the air purge together at once. Therefore securely tighten the flare pipes which AIR PURGE connect the outdoor unit and indoor unit with the specified tightening torque using a torque wrench.

  • Page 89: Wiring Connection

    u Packed valve handling precautions 3 units (A + B + C) Multi • Open the valve stem all the way out ; do not try Terminal block (Connecting cable) to 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 90 10-4-8. Check and Test Operation 10-4-9. Miswiring (Mispiping) Check Make sure that the wiring and piping for each room have the same alphabetical codes (A, B, C, D). For R410A, use the leak detector exclusively manu- Connect and secure the power cord. factured for HFC refrigerant (R410A, R134a, etc.).
  • Page 91 u Miswiring (mispiping) check by LED Indication • For this outdoor unit, the self-miswiring (mispiping) check is possible by using five LEDs (1 Yellow + 4 Red). ∗ LEDs (D800 to D804) locate on the sub-control board underneath of the inverter. D800 D801 D802 D803 D804 Description Normal operation (no error)
  • Page 92 u 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, a service port diameter of the outdoor unit control valve (3 way valve) has been changed. (1/2 UNF 20 threads per inch) •...
  • Page 93 10-5. Test Operation 10-5-4. Select Switch on Remote Controller • If two indoor units are installed in the same room 10-5-1. Gas Leak Test or adjoining rooms, when the user tries to operate Check the flare nut connections for gas leaks with a only one unit, both units may receive the same gas leak detector and/or soapy water.
  • Page 94 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 95 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 counter- the right-side joint first.

  • Page 96: 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 Troubleshooting Procedure Page...
  • Page 97 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 normally. described in the following table. If a claim is made for running operation, check 11-1-2.
  • Page 98 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 5-serial LED on the inverter P .C.
  • Page 99 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 100 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. However, the check codes are not deleted even if the power supply is turned off because they are stored in the fixed memory.
  • Page 101 Block distinction Operation of diagnosis function Judgment and action Check Check Block Cause of operation conditioner Remarks code code status Outdoor P.C. Inverter over-current All off Displayed when Even if trying operation again, all board protective circuit error is detected. operations stop immediately.
  • Page 102 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? 3. Is the crossover cable connected properly? Operation 4.
  • Page 103 (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 supply once, and...
  • Page 104 (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 105 (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 START/STOP button. Operation lamp on indoor unit is not indicated.
  • Page 106 11-5-2. Wiring Failure (Interconnecting and Serial Signal Wire) (1) Outdoor unit does not operate ‚ ƒ 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 107 11-6. Trouble Diagnosis by Outdoor LED For the outdoor unit, the self-diagnosis is possible by LED (Yel) and four LEDs (Red). • LED (Yel) (D800) and LEDs (Red) (D801 to D804) are D800 D801 D802 D803 D804 provided on the sub-control board under surface of the inverter, and as shown below, they are checked from the wiring port when removing the wiring cover.

  • Page 108: 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 109: How To Diagnose Trouble In Outdoor Unit

    11-8. How to Diagnose Trouble in Outdoor Unit 11-8-1. Summarized Inner Diagnosis of Inverter Assembly Table 11-8-1 Diagnosis/Process flowchart Item Contents Summary Preparation Turn “OFF” the power supply breaker, and remove 3P connector which connects Remove inverter and compressor. connector of compressor.
  • Page 110 Diagnosis/Process flowchart Item Contents Summary Check Check winding resistance between phases of compres- sor, and resistance between outdoor frames by using a tester. Check → OK if 10MΩ or more • Is not grounded. winding of compressor.  → OK if 0.2Ω (under 20°C) •...
  • Page 111 (3) Check procedures Table 11-9-1 Procedure Check points Causes Turn off the power supply breaker Check whether or not the fuse (F01) Impulse voltage was applied or the and remove the P.C. board is blown. indoor fan motor short-circuited. assembly from electronic parts base.
  • Page 112 11-9-2. P.C. Board Layout +12V IC801 DB01 T101 [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 TA, TC, TCj, TO, TE, TS Temperature (˚C) –...
  • Page 113 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) sensor (Normal temp.) Heat exchanger (TCj) sensor Temperature 10°C 20°C 25°C 30°C 40°C Sensor TA, TC, TCj (kΩ) 20.7 12.6...
  • Page 114 11-9-5. Checking Method for Each Part Part name Checking procedure Electrolytic capacitor 1. Turn OFF the power supply breaker. (For raising pressure, 2. Discharge all three capacitors completely. smoothing) 3. Check that safety valve at the bottom of capacitor is not broken. 4.
  • Page 115 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 116 <MCC-1438> – 116 –...
  • Page 117 <MCC-818> – 117 –...

  • 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. Electric Parts Cover Detached 1) Detach the two air filters. 1) Perform all the steps in 11-1-1.Removing the Front Panel and Moving Panel. 2) Disconnect the plasma ion charger connector and the earth lead (black). (The earth lead is 2) Remove the screw beside the screw that se- connected to the heat exchanger with a screw.) cures the electric parts box assembly.
  • Page 120 12-1-4. Microcomputer P.C. Board 12-1-5. Louver 1) Remove the electric parts cover screw. 1) Open the moving panel, and support it with the panel support. 2) Detach the metal electric parts cover. 2) Open the vertical air flow louver. 3) Disconnect the connectors from the P .C. board. 3) Insert a flathead screwdriver into the gap of the 4) Disconnect the solderless terminals from the P .C.
  • Page 121 12-1-6. Heat Exchanger 12-1-7. Fan Motor 1) Perform all the steps in 12-1-1. Removing the 1) Perform all the steps in 12-1-1. Removing the Front Panel and Moving Panel and 12-1-2. Front Panel and Moving Panel and 12-1-3. Fixing Frame Assembly. Electric Parts Cover Detached.
  • Page 122 12-1-8. Cross Flow Fan 1) Perform all the steps in 11-1-1. Removing the Keep 27mm distance between the support shaft at the rear centre of the unit and the immediate Front Panel and Moving Panel and 11-1-2. right joint-section of the cross flow fan. Fixing Frame Assembly.
  • Page 123 12-2. Plasma Ion Charger 12-2-3. High-voltage Power Supply Unit and Discharger Unit 12-2-1. Common Procedure 1) Perform all the steps in 12-1-1. Removing the 1) Perform all the steps in 12-1-1. Removing the Front Panel and Moving Panel. Front Panel and Moving Panel for the indoor unit. 2) Disconnect the 4P connector on the high-voltage 2) Detach the two air filters.
  • Page 124 12-3. Outdoor Unit Part name Procedure Remarks Common 1. Detachment procedure 1) Stop operation of the air conditioner, and turn “OFF” the power breaker. Air outlet panel Upper panel 2) Remove the side panel. (Ø4 × 10L 3 pcs.) Back panel guard 3) Remove the cord clamp.
  • Page 125 Part name Procedure Remarks Control 1. Disconnect lead wires and connectors connected from the control board assembly to other parts. board assembly 1) Lead wires • Connection with terminal block : 7 wires (Red, Orange, Pink, Yellow, Black and two White CN601~ CN608 wires)
  • Page 126 Part name Procedure Remarks Fan motor 1) Perform work from item 1) to 5), 7) of 2) Remove the flange nut fixing the fan motor and the propeller fan. • Flange nut is loosened by turning clockwise. (To tighten the flange nut, turn counterclock- wise.) 3) Remove the propeller fan.
  • Page 127 Part name Procedure Remarks Pulse 1. Detachment motor valve Positioning bracket 1) Perform work of item at coil side (PMV) coil PMV coil 2) Release the coil from the notch by turning it, Lead wire and remove coil from the pulse motor valve. take-out port 2.
  • Page 128 Part name Procedure Remarks Replacement of 1) Cut the sensor 100 mm longer than temperature sensor old 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 parts of sensor TO,...

  • Page 129: 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 RAS-M10PKVP-ND, RAS-M13PKVP-ND, RAS-M16PKVP-ND, RAS-M18PKVP-ND 214, 215 238 234 221, 222, 223 212, 213 248, 249 ∗ The parts in the following parts list are conformed to RoHS.
  • Page 130 13-2. Microcomputer P.C. Board RAS-M10PKVP-E, RAS-M13PKVP-E, RAS-M16PKVP-E, RAS-M18PKVP-E RAS-M10PKVP-ND, RAS-M13PKVP-ND, RAS-M16PKVP-ND, RAS-M18PKVP-ND 417, 418, 419, 420 ∗ The parts in the following parts list are conformed to RoHS. Therefore be sure to use the following parts for repairing and replacing.
  • Page 131 13-3. Outdoor Unit 39, 40 12, 45, 47 13, 46, 48 49 27 – 131 –...
  • Page 132 ∗ The parts in the following parts list are conformed to RoHS. Therefore be sure to use the following parts for repairing and replacing. Location Part Location Part Description Description 43005640 Cabinet, Back Ass’y 43050407 Thermostat, Bimetal 43005641 Cabinet, Side Ass’y 43063317 Holder, Thermostat 43005639...
  • Page 133 13-4. P.C. Board Layout RAS-4M27GAV-E1 TO Sensor TE Sensor TS Sensor TD Sensor TGa Sensor TGb Sensor TGc Sensor TGd Sensor ∗ The parts in the following parts list are conformed to RoHS. Therefore be sure to use the following parts for repairing and replacing. Location Part Location...
  • Page 134 RAS-3M26GAV-E1 TO Sensor TE Sensor TS Sensor TD Sensor TGa Sensor TGb Sensor TGc Sensor ∗ The parts in the following parts list are conformed to RoHS. Therefore be sure to use the following parts for repairing and replacing. Location Part Location Part...
  • Page 135 TOSHIBA CARRIER CORPORATION 2 CHOME 12-32, KONAN, MINATOKU, TOKYO, 108-0075, JAPAN Copyright © 1999 to 2009 TOSHIBA CARRIER CORPORATION, ALL Rights Reserved.

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