Toshiba RAS-M10YKV-E Service Manual
  1. Manuals
  2. Brands
  3. Toshiba Manuals
  4. Air Conditioner
  5. RAS-M10YKV-E
  6. Service manual
Toshiba RAS-M10YKV-E Service Manual

Toshiba RAS-M10YKV-E Service Manual

Split type
Hide thumbs Also See for RAS-M10YKV-E:
Table of Contents

Advertisement

Quick Links

SERVICE MANUAL

AIR-CONDITIONER
RAS-M10YKV-E, RAS-M13YKV-E, RAS-M16YKV-E
RAS-M10YKCV-E, RAS-M13YKCV-E, RAS-M16YKCV-E
RAS-M10YKV-E, RAS-M13YKV-E, RAS-M16YKV-E
Parts List
F i l e N o . A 0 1 - 0 0 4
• Indoor Unit (1)
• Indoor Unit (2)
• Outdoor Unit
• P.C. board Layout
RAS-4M27YAV-E
RAS-4M27YACV-E
RAS-3M26YAV-E
R410A
FILE NO. A01-004
SPLIT TYPE
RAS-4M27YAV-E
RAS-4M27YACV-E
RAS-3M26YAV-E
PRINTED IN JAPAN, Mar.,2001 ToMo

Advertisement

Table of Contents
loading

Related Manuals for Toshiba RAS-M10YKV-E

Summary of Contents for Toshiba RAS-M10YKV-E

  • Page 1: Service Manual

    FILE NO. A01-004 SERVICE MANUAL AIR-CONDITIONER SPLIT TYPE RAS-M10YKV-E, RAS-M13YKV-E, RAS-M16YKV-E RAS-4M27YAV-E RAS-M10YKCV-E, RAS-M13YKCV-E, RAS-M16YKCV-E RAS-4M27YACV-E RAS-M10YKV-E, RAS-M13YKV-E, RAS-M16YKV-E RAS-3M26YAV-E Parts List F i l e N o . A 0 1 - 0 0 4 • Indoor Unit (1) •...

  • Page 2: Table Of Contents

    CONTENTS 1. SPECIFICATIONS..................3 2. REFRIGERANT R410A ................26 3. CONSTRUCTION VIEWS ................. 34 4. WIRING DIAGRAM ................... 36 5. SPECIFICATIONS OF ELECTRICAL PARTS .......... 38 6. REFRIGERANT CYCLE DIAGRAM ............40 7. CONTROL BLOCK DIAGRAM ..............48 8. OPERATION DESCRIPTION ..............50 9.

  • Page 3: Specifications

    1. SPECIFICATIONS 1-1. Specifications RAS-M10YKV-E, RAS-M13YKV-E, RAS-M16YKV-E/RAS-4M27YAV-E, RAS-3M26YAV-E Unit model Indoor RAS-M10YKV-E, RAS-M13YKV-E, RAS-M16YKV-E Outdoor RAS-4M27YAV-E RAS-3M26YAV-E 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 –...
  • Page 4 RAS-M10YKCV-E, RAS-M13YKCV-E, RAS-M16YKCV-E/RAS-4M27YACV-E Unit model Indoor RAS-M10YKCV-E, RAS-M13YKCV-E, RAS-M16YKCV-E Outdoor RAS-4M27YACV-E Cooling capacity (kW) Cooling capacity range (kW) 1.4 – 9.2 Power supply 220/230/240V, 1Ph, 50/60Hz Electric Indoor Unit model RAS-M10YKCV-E RAS-M13YKCV-E RAS-M16YKCV-E characteristics Running current 0.15 0.15 0.15 Power consumption Power factor 91/87/83 91/87/83...
  • Page 5 (950 to 2900) (4.80 to 13.45) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E – 5 –...
  • Page 6 (950 to 2900) (4.59 to 12.87) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E – 6 –...
  • Page 7 (950 to 2900) (4.40 to 12.33) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E – 7 –...
  • Page 8 (500 to 2850) (2.84 to 13.22) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E – 8 –...
  • Page 9 (500 to 2850) (2.72 to 12.64) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E – 9 –...
  • Page 10 (500 to 2850) (2.60 to 12.12) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E – 10 –...
  • Page 11 Outdoor Unit : RAS-4M27YACV-E <Cooling/220V> Power Indoor unit Unit capacity (kW) Cooling Power Operating Outdoor Operating supply capacity consumption current noise status (kW) (dB) 3.87 1 unit – – – – – – (1.4 to 3.2) (640 to 950) (3.68 to 4.64) 1200 5.74 –...
  • Page 12 Outdoor Unit : RAS-4M27YACV-E <Cooling/230V> Power Indoor unit Unit capacity (kW) Cooling Power Operating Outdoor Operating supply capacity consumption current noise status (kW) (dB) 3.71 1 unit – – – – – – (1.4 to 3.2) (640 to 950) (3.52 to 4.44) 1200 5.49 –...
  • Page 13 Outdoor Unit : RAS-4M27YACV-E <Cooling/240V> Power Indoor unit Unit capacity (kW) Cooling Power Operating Outdoor Operating supply capacity consumption current noise status (kW) (dB) 3.55 1 unit – – – – – – (1.4 to 3.2) (640 to 950) (3.38 to 4.26) 1200 5.26 –...
  • Page 14 (980 to 2950) (4.95 to 13.68) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E – 14 –...
  • Page 15 (980 to 2950) (4.73 to 13.09) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E – 15 –...
  • Page 16 (980 to 2950) (4.54 to 12.54) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E – 16 –...
  • Page 17 (380 to 2800) (2.16 to 12.99) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E – 17 –...
  • Page 18 (380 to 2800) (2.07 to 12.42) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E – 18 –...
  • Page 19 (380 to 2800) (1.98 to 11.90) • The above specification values are those under the conditions that the indoor DB/WB=27/19°C and the outdoor DB/ WB=35/–°C. • Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E – 19 –...

  • Page 20: Operation Characteristic Curve

    1-2-1. 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...

  • Page 21: Electrical Data

    9.99 0.15 x 4 = 0.60 NOTE : Model of Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E MCA : Minimum Circuit Amps. : Maximum Instantaneous Current Flow (Equivalent to MCA in case of inverter air conditioner)
  • Page 22 8.88 0.15 x 4 = 0.60 NOTE : Model of Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E MCA : Minimum Circuit Amps. : Maximum Instantaneous Current Flow (Equivalent to MCA in case of inverter air conditioner)
  • Page 23 Outdoor Unit : RAS-4M27YACV-E <Cooling> System Compressor Fan motor FLA Combination of Voltage range Power supply indoor unit operation Volts- MOCP Indoor Outdoor (Amps) Min. Max. 1 unit – – – 4.48 4.48 3.06 3.06 0.15 x 1 = 0.15 –...
  • Page 24 9.03 0.15 x 3 = 0.45 NOTE : Model of Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E MCA : Minimum Circuit Amps. : Maximum Instantaneous Current Flow (Equivalent to MCA in case of inverter air conditioner)
  • Page 25 10.36 0.15 x 3 = 0.45 NOTE : Model of Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E MCA : Minimum Circuit Amps. : Maximum Instantaneous Current Flow (Equivalent to MCA in case of inverter air conditioner)

  • Page 26: Refrigerant R410A

    2. REFRIGERANT R410A This air conditioner adopts the new refrigerant HFC (5) After completion of installation work, check to (R410A) which does not damage the ozone layer. make sure that there is no refrigeration gas leakage. The working pressure of the new refrigerant R410A is 1.6 times higher than conventional refrigerant If the refrigerant gas leaks into the room, coming (R22).
  • Page 27 Table 2-2-1 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 (2) Joints b) Socket Joints For copper pipes, flare joints or socket joints are Socket joints are such that they are brazed used.
  • Page 28 c) Insertion of Flare Nut Flare processing dimensions differ according to the type of flare tool. When using a con- d) Flare Processing ventional flare tool, be sure to secure “dimen- Make certain that a clamp bar and copper sion A” by using a gauge for size adjust- pipe have been cleaned.
  • Page 29 Table 2-2-6 Flare and flare nut dimensions for R22 Flare nut Dimension (mm) Nominal Outer diameter Thickness width diameter (mm) (mm) (mm) 6.35 9.52 13.0 13.5 12.70 16.2 16.0 12.9 Fig. 2-2-2 Relations between flare nut and flare seal surface (2) Flare Connecting Procedures and Precautions When it is strong, the flare nut may crack and may be made non-removable.
  • Page 30 2-3. Tools 2-3-1. Required Tools The service port diameter of packed valve of the outdoor unit in the air conditioner 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. The used refrigerating oil is changed, and mixing of oil may cause a trouble such as generation of sludge, clogging of capillary, etc.

  • Page 31: Recharging Of Refrigerant

    2-4. 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 Connect the charge hose to packed valve service...

  • Page 32: Brazing Of Pipes

    Be sure to make setting so that liquid can be charged. 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 (2) Characteristics required for flux 2-5-3. Brazing • Activated temperature of flux coincides with the As brazing work requires sophisticated techniques, brazing temperature. experiences based upon a theoretical knowledge, it must be performed by a person qualified. • Due to a wide effective temperature range, flux is hard to carbonize.

  • Page 34: Construction Views

    Back body Hanger Extermal length reference Drain hose (0.54m) Hanger Knock out system Connecting pipe (0.39m) Connecting pipe (0.49m) (Flare Ø9.52 : RAS-M10YKV-E, RAS-M10YKCV-E (Flare Ø6.35) RAS-M13YKV-E, RAS-M13YKCV-E) (Flare Ø12.7 : RAS-M16YKV-E, RAS-M16YKCV-E) 65.5 65.5 Hanger Wireless remote For stud bolt...

  • Page 35: Outdoor Unit

    3-2. Outdoor Unit RAS-4M27YAV-E/RAS-4M27YACV-E/RAS-3M26YAV-E Knock out Ø20 x 60hole Ø25 hole Ø8 hole 3-Ø3. 5 hole 86 12 Knock out Anchor bolt (4-Ø12 x 17 hole) Fan guard Handle Liquid valve Gas valve Service port Outdoor air temperature sensor Handle 4 Units Multi Model Only Connecting pipe port (Ø6.35) D unit...

  • Page 36: Wiring Diagram

    4. WIRING DIAGRAM 4-1. Indoor Unit LOUVER MOTOR FAN MOTOR RAS-M10YKV-E, RAS-M13YKV-E, RAS-M16YKV-E RAS-M10YKCV-E, RAS-M13YKCV-E, RAS-M16YKCV-E DC MOTOR 6 5 4 3 2 1 4 3 2 6 5 4 3 2 1 5 4 3 2 CN10 CN07 R109...
  • Page 37 Color Identification 4-2. Outdoor Unit BLACK WHITE RAS-4M27YAV-E/RAS-4M27YACV-E/RAS-3M26YAV-E BLUE BROWN ORANGE NOTE GRAY YELLOW IGBT : Insulated Gate Bipolar PINK PURPLE Transistor GREEN CN802 : Pulse Modulating Valve : Discharge Temp. sensor TGa to TGd : Temp. sensor at A to D unit T03 CT Compressor CN09...

  • Page 38: Specifications Of Electrical Parts

    5. SPECIFICATIONS OF ELECTRICAL PARTS 5-1. Indoor Unit RAS-M10YKV-E, RAS-M13YKV-E, RAS-M16YKV-E RAS-M10YKCV-E, RAS-M13YKCV-E, RAS-M16YKCV-E Parts name Type Specifications Fan motor (for indoor) TICF-35-19-4 DC 35V, 19W Thermo. sensor (TA-sensor) ( – ) 10kΩ at 25°C DC-DC transformer (T01) SWT-34 DC 390V, Secondary DC 35V, 12V, 7V...
  • Page 39 5-2. Outdoor Unit RAS-4M27YAV-E, RAS-4M27YACV-E, RAS-3M26YAV-E Parts name Model name Rating SC coil (Noise filter) (L01) SC-20-01J-A AC2 50V, 20A, 0.15mH SC coil (Noise filter) (L02) SC-20-S03J AC 250V, 20A, 0.3mH Primary side DC 280V Secondary side : DC-DC transformer SWT-43 7.5V x 1, 13V x 1 26.5V x 3, 16V x 1, 15V x 1...

  • Page 40: Refrigerant Cycle Diagram

    6. REFRIGERANT CYCLE DIAGRAM RAS-M10YKV-E, RAS-M13YKV-E, RAS-M16YKV-E RAS-4M27YAV-E Temp. measurement Indoor unit A D room C room B room D room C room B room Evaporator Per 1 unit Cross flow fan Max. : 25m Min. : 2m Connecting pipe Total Thickness : 0.8mm...
  • Page 41 RAS-M10YKCV-E, RAS-M13YKCV-E, RAS-M16YKCV-E RAS-4M27YACV-E Temp. measurement D room C room B room D room C room B room Indoor unit A Evaporator Cross flow fan Per 1 unit Max. : 25m Min. : 2m Connecting pipe Thickness : 0.8mm Total Ø12.7 : Connecting pipe Max.
  • Page 42 RAS-M10YKV-E, RAS-M13YKV-E, RAS-M16YKV-E RAS-3M26YAV-E Temp. measurement Indoor unit A C room B room C room B room Evaporator Per 1 unit Cross flow fan Max. : 25m Min. : 2m Connecting pipe Thickness : 0.8mm Total Ø12.7 : Max. : 50m...

  • Page 43: Operation Data

    12 to 14 51 to 53 High NOTES : Model of Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E NOTES : (1) Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bend. (Thermistor thermometer) (2) Connecting piping condition : 5 meters x 4 units (5m/each indoor unit) –...
  • Page 44 33 to 35 –2 to 0 High NOTES : Model of Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E NOTES : (1) Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bend. (Thermistor thermometer) (2) Connecting piping condition : 5 meters x 4 units (5m/each indoor unit) –...
  • Page 45 Outdoor Unit : RAS-4M27YACV-E <Cooling> Temperature Operating combination Heat exchanger No. of Standard Compressor condition (Unit) pipe temp. Indoor Outdoor operating pressure revolution units P (MPa) (rps) Indoor Outdoor T1 (°C) T2 (°C) 1 unit – – – 0.8 to 1.0 9 to 11 45 to 47 High...
  • Page 46 12 to 14 51 to 53 High NOTES : Model of Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E NOTES : (1) Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bend. (Thermistor thermometer) (2) Connecting piping condition : 5 meters x 3 units (5m/each indoor unit) –...
  • Page 47 37 to 39 –2 to 0 High NOTES : Model of Indoor unit 10 : RAS-M10YKV-E, 13 : RAS-M13YKV-E, 16 : RAS-M16YKV-E NOTES : (1) Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bend. (Thermistor thermometer) (2) Connecting piping condition : 5 meters x 3 units (5m/each indoor unit) –...

  • Page 48: Control Block Diagram

    Remote Controller Louver Noise Filter Louver Driver Motor Serial Signal Transmitter/Receiver From Outdoor Unit Serial Signal Communication REMOTE CONTROLLER RAS-M10YKV-E, RAS-M13YKV-E, RAS-M16YKV-E RAS-M10YKCV-E, RAS-M13YKCV-E, RAS-M16YKCV-E (Heat pump model) (Cooling only model) Infrared Infrared Rays Rays Remote Controller Remote Controller Operation (START/STOP)

  • Page 49: Outdoor Unit (Inverter Assembly)

    7-2. Outdoor Unit (Inverter Assembly) RAS-4M27YAV-E, RAS-4M27YACV-E, RAS-3M26YAV-E 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

    8. OPERATION DESCRIPTION (2) Role of outdoor unit controller 8-1. Outline of Air Conditioner Control Receiving the operation command signal (Serial This air conditioner is a capacity-variable type air signal) from the indoor controller, the outdoor conditioner, which uses DC motors for the indoor fan unit performs its role.
  • Page 51 (4) Contents of operation command signal (Serial 8-1-1. Capacity Control signal) from outdoor unit controller to indoor unit The cooling capacity is varied by changing compres- controller sor motor speed. The inverter changes compressor The following signals are sent from the outdoor motor speed by changing AC 220–240V power to unit controller.
  • Page 52 8-1-4. Prevent-Freezing Control 8-1-6. Louver Control The indoor heat exchanger sensor detects refriger- (1) Vertical air flow louvers ant vapor temperature in COOL/DRY operation. If Positions of vertical air flow louvers are automati- the temperature is below the specified value, com- cally controlled according to the operation status pressor motor speed is reduced so that operation is (AUTO, COOL, DRY, HEAT).
  • Page 53 8-1-7. Outdoor Fan Control (DC Fan Motor) Although the outdoor fan motor drives the outdoor fan by non-step variable system of the revolution speed, the revolution speed is restricted to three steps on the convenience of controlling. If a strong wind is lashing outside of the room, the operation may be continued as the outdoor fan stops in order to protect the outdoor fan motor.
  • Page 54 8-2-2. Cooling Operation (1) Cooling capacity control (The Remote controller MODE Button • The cooling capacity and room temperature is Set to the COOL Position) are controlled by changing the compressor motor speed according to both the difference • Once the setting is made, the operation mode is between the temperature detected by the room memorized in the microcomputer so that the same temperature sensor and the temperature set by...
  • Page 55 (5) Limit for maximum compressor motor speed (7) Discharge temperature control by indoor fan speed The discharge temperature of refrigerant gas When outdoor temperature sensor detected from the compressor is detected by the dis- 32°C or lower, and indoor heat exchanger charge temperature sensor, and controls operat- sensor detected 17°C or lower, the maximum ing compressor motor speed.
  • Page 56 (8) ECONO. operation control When the ECONO. button of the remote controller is pushed, quiet and mild operation is performed by restraining air flow and operating motor speed. 1) Indoor air flow is controlled between SUL and L– (Low air (–)). 2) Setting M10 at 20 rps, M13 at 20 rps and M16 at 20 rps as the maximum operating compressor motor speed, the minimum capacity operation range is widened every 1 hour and 2 hours have passed after ECONO.
  • Page 57 (1) Dehumidifying-preferential Cooling capacity [Cold draft preventing control] control The upper limit of fan revolution speed is shown • The cooling capacity and room temperature are below. controlled by changing the compressor motor speed according to both the difference between HIGH the temperature detected by the room temperature sensor and the temperature set by TEMP button...
  • Page 58 (2) High-temp. release control c. The counted time is 34 minutes or more, and status that temperature of the outdoor If temperature of the indoor heat exchanger heat exchanger detected by the outdoor detected by the indoor heat exchanger sensor is heat exchanger is –5°C or lower and 55°C or higher, compressor motor speed is temperature lowered by 3.0 °C than the...
  • Page 59 (5) Louver control 8-3. Temporary Operation The vertical air flow louvers are automatically set • Temporary Auto operation, existence of Auto to heating position or heat memory position. Restart, and Temporary Cooling operation can be When the compressor is turned off by high-temp. set by the TEMPORARY button of the indoor release control, the vertical air flow louvers close controller.
  • Page 60 8-4. Auto Restart Function 8-4-1. How to Set the Auto Restart To set the Auto Restart function, proceed as follows: This unit is equipped with an Automatic restarting facility which allows the unit to restart and resume Access the TEMPORARY button located in the lower the set operating conditions in the event of a power right hand corner beneath the hinged front panel of supply shutdown without the use of the hand...
  • Page 61 8-4-2. How to Cancel the Auto Restart To cancel the Auto Restart function, proceed as follows: Repeat the setting procedure: the unit will acknowledge the instruction and beep three times. The system will now be required to manually restart with the remote controller after the main supply is turned off. Cancellation is carried out: •...

  • Page 62: Remote Controller

    8-5. Remote Controller 8-5-1. Parts Name of Remote controller Transmitter MODE TEMP . AUTO AUTO COOL TEMP. (Temperature) buttons ˚C MED. Push this button to set a desired Hr . ON OFF TIMER HIGH FAN ONLY temperature. START/STOP button Push this button to start/stop the TEMP.

  • Page 63: Installation Procedure

    9. INSTALLATION PROCEDURE 9-1. Safety Cautions For general public use Power supply cord of appliance for outdoor use shall be more than polychloroprene sheathed flexible cord (design H07 RN-F), or cord designation 245 IEC 66. (2.5 mm² or more) CAUTION New Refrigerant Air Conditioner Installation •...
  • Page 64 • GROUNDING WIRE WORKS MUST BE CONSTRUCTED IN COMPLIANCE WITH INSTALLATION MANUAL. • BE SURE TO USE THE CORD-CLAMPS AND THE UNIT COVER TO THE SPECIFIED POSITIONS WITH ATTACHED TO THE PRODUCT. MOUNT THE UNIT COVER FOR CABLES OF CONNECTING SECTION FIRMLY WITH THE SCREWS.

  • Page 65: Indoor Unit

    9-2. Indoor Unit For the rear left and left piping Hanger Wall Hanger Installation plate Insert the something by fist-size between the indoor unit and wall, and lift indoor unit to make Clip anchor Front cabinet work easier. (local part) Front panel Do not allow the drain hose to get slack.
  • Page 66 9-2-2. Installation Place 9-2-3. Cutting a Hole and Mounting Installation Plate • A place which provides the spaces around the indoor unit as shown in the installation diagram. Cutting a Hole • A place where there is no obstacle near the air inlet and outlet.
  • Page 67 • When the installation plate is directly 9-2-4. Wiring Connection mounted on the wall How to connect the inter-connect cable 1. Securely fit the installation plate onto the wall by screwing it in the upper and lower parts to hook •...
  • Page 68 9-2-5. Piping and Drain Hose Installation NOTE If the pipe is bent incorrectly, the indoor unit may In case of rightward piping unstably be set on the wall. • After scribing slits of After passing the connecting pipe through the pipe the front cabinet and hole, connect the connecting pipe to the auxiliary Slit...
  • Page 69 9-2-6. Drainage 9-2-8. Setting of Remote controller Selector Switch 1. Run the drain hose sloping downwards. • Hole should be made at a slight downward When two indoor units are installed in the slant to the outdoor side. separated rooms, there is no need to change the select switches.
  • Page 70 How to open the screw cap Screws Fig. 9-2-18 • Place your finger on the lower part and push to open the screw cap. Connector cover Electrical parts cover • Remove the connector cover. (1) Remove the screws securing the connector Pull out cover.
  • Page 71 2. Setting of remote controller selector at the 9-2-9. Check and Test Operation remote controller side ¨ 1. Check the unit is firmly hooked up on the installation plate. [B] of the remote controller is displayed with ¨ 2. Check the connecting pipes tightened liquid crystal only when it is set to [B].
  • Page 72 9-3. Outdoor Unit CAUTION 9-3-1. Accessory and 1. Install the outdoor unit without anything Installation Parts blocking the air discharging. 2. When the outdoor unit is installed in a place exposed always to a strong wind like a coast or on a high story of a building, secure the normal fan operation using a duct or a wind shield.
  • Page 73 9-3-6. Refrigerant Piping Connection • Flaring size : A (Unit : mm) - 0.4 Outer dia. of copper pipe CAUTION R410A 6.35 KEEP IMPORTANT 4 POINTS FOR PIPING 9.52 13.2 13.0 WORK 12.7 16.6 16.2 1. Take away dust and moisture. In the case of flaring for R410A with the conven- (Inside of the connecting pipes) tional flare tool, pull out it approx.
  • Page 74 1. Piping connections to the outdoor unit should be Tightening connection arranged in the sequence A, B, C, D starting from the bottom. Align the centers of the connecting pipes and tighten the flare nut as far as possible with your fingers. (For each piping connection, the gas pipe is on the bottom and the liquid pipe is on the top.) Then tighten the nut with a spanner and torque...
  • Page 75 9-3-8. Evacuating Packed valve handling precautions After the piping has been connected to all indoor • Open the valve stem all the way out ; do not try to unit(s), you can perform the air purge together at open it beyond the stopper. once.
  • Page 76 3 units (A + B + C) Multi 9-3-10. Check and Test Operation For R410A, use the leak detector exclusively Terminal block (Connecting cable) manufactured for HFC refrigerant (R410A, R134a, etc.). The conventional leak detector for HCFC refriger- ant (R22, etc.) cannot be used because its sensi- Screw tivity for HFC refrigerant lowers to approx.
  • Page 77 9-3-11. Miswiring (Mispiping) Check 5. During check (Check time 3 to 20 minutes). • When an error describes in the table below Make sure that the wiring and piping for each room occurred check operation stops and error code have the same alphabetical codes (A, B, C, D). is displayed on LED.

  • Page 78: Installation/Servicing Tools

    Useful Functions Self-Diagnosis by LED Indication • For this outdoor unit, the self-diagnosis is possible by using five LEDs (1 Yellow + 4 Red). LEDs (D800 to D804) are provided on P.C. board of the inverter. 1. If a trouble occurs, LED goes on LED indication Indoor Contents...

  • Page 79: How To Diagnose The Trouble

    10. 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 10-1 Troubleshooting Procedure Page...
  • Page 80 10-1. First Confirmation 10-1-3. Operation Which is not a Trouble (Program Operation) 10-1-1. Confirmation of Power Supply For controlling the air conditioner, the program Confirm that the power breaker operates (ON) nor- operations are built in the microcomputer as de- mally.

  • Page 81: Judgment By Flashing Led Of Indoor Unit

    10-3. Judgment by Flashing LED of Indoor Unit While the indoor unit monitors the operation status of the air conditioner, if the protective circuit operates, the contents of self-diagnosis are displayed with block on the indoor unit indication section. Table 10-3-1 Check Item Block display...
  • Page 82 10-4. Self-Diagnosis by Remote controller (Check Code) (1) The self-diagnosis by the check code is performed while items B to E blocks are displayed. (2) When turning the operation mode on the remote controller to the service mode, and operating the remote controller, the controller of the indoor unit can self-diagnose operation of the protection circuit by displayed contents (check code) on the remote controller, by whether all the lamps flash (5Hz) and the receiving sound (Pi, Pi, Pi ...
  • Page 83 10-4-3. Caution at Servicing (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 84 Block distinction Operation of diagnosis function Check Check Judgment and action 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 operates. error is detected. operations stop immediately.

  • Page 85: Judgment Of Trouble By Every Symptom

    10-5. Judgment of Trouble by Every Symptom Operation 10-5-1. Indoor Unit (Including Remote controller) Check Item (1) Power is not turned on (Does not operate entirely) Considerable main cause Turn off the power supply Measures once, and turn on it again after 5 seconds passed.
  • Page 86 (3) Only the indoor fan does not operate Operation Check Item Turn off the power supply. Considerable main cause Measures Turn on the power supply. Item by symptom Does the fan Replace the board. stop in no operating Control board is defective. status? Start the operation with low fan setting...
  • Page 87 (4) Indoor fan motor starts rotating by turning on power supply alone (Operation may be normally performed (selected) by operation on the remote controller.) <Cause> IC is built in the indoor fan motor, therefore P .C. board is also mounted to inside of the motor. If soldering of P .C.
  • Page 88 (5) How to examine whether remote controller is good or bad • Does setting (A/B) of the remote controller selection match with that indoor unit? Operation Check Items There is no beep from Press the START/STOP button. the indoor unit. Considerable main cause The operation lamp of the air conditioner main...
  • Page 89 10-5-2. Wiring Failure (Interconnecting and Serial Signal Wire) (1) Outdoor unit does not operate ‚ ƒ 1) Is the voltage between of the indoor terminal board varied? Confirm that transmission from indoor to outdoor is correctly performed based upon the following dia- gram.
  • Page 90 10-6. Trouble Diagnosis by Outdoor LED For the outdoor unit, the self-diagnosis is possible by LED (Yel) and four LEDs (Red). D800 D801 D802 D803 D804 • LED (Yel) (D800) and LEDs (Red) (D801 to D804) are provided on the sub-control board under surface of the inverter, and as shown below, they Yellow are checked from the wiring port when removing...

  • Page 91: How To Diagnose Trouble In Outdoor Unit

    10-7. How to Diagnose Trouble in Outdoor Unit 10-7-1. Summarized Inner Diagnosis of Inverter Assembly Diagnosis/Process flowchart Item Contents Summary Preparation Turn “OFF” the power breaker, and remove 3P connector which connects inverter and compressor. Remove connector of compressor. Check •...
  • Page 92 Summary Diagnosis/Process flowchart Item Contents Check Check winding resistance between phases of compres- sor, and resistance between outdoor frames by using a tester. → OK if 10MΩ or more Check • Is not grounded. winding of  • Is not short-circuited →...
  • Page 93 (3) Check procedures Table 10-8-1 Procedure Check point (Symptom) Causes Shut off the power supply and 1. Is the fuse blown? Application of shock voltage. remove the P.C. board assembly Overload by short-circuit of the from the electronic parts base. parts.
  • Page 94 10-8-2. P.C. Board Layout Bottom View (For the Top View, refer to page 100.) <Sensor characteristic table> TD : Discharge temp. sensor TA : Room temp. sensor TC : Heat exchanger temp. sensor TO : Outdoor temp. sensor TGa : Gas side temp. sensor TGb : Gas side temp.
  • Page 95 10-8-3. Indoor Unit (Other Parts) Part name Checking procedure Room temp. (TA) sensor Disconnect the connector and measure the resistance value with tester. Heat exchanger (TC) (Normal temp.) sensor Temperature 10°C 20°C 25°C 30°C 40°C Sensor TA, TC (kΩ) 20.7 12.6 10.0 Remote controller...
  • Page 96 10-8-5. Checking Method for Each Part Part name Checking procedure Electrolytic capacitor 1. Turn OFF the power supply breaker. (For raising pressure, 2. Discharge all four capacitors completely. smoothing) 3. Check that safety valve at the bottom of capacitor is not broken. 4.

  • Page 97: How To Simply Judge Whether Outdoor Fan Motor Is Good Or Bad

    10-9. 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 control check code “02 : Outdoor block, 1A : Outdoor fan drive system error”...

  • Page 98: How To Replace The Main Parts

    11. HOW TO REPLACE THE MAIN PARTS 11-1. Indoor Unit Part name Procedure Remarks  Front panel 1) After stopping the operation of the air conditioner, be sure to turn off the circuit breaker or disconnect the power plug from the AC wall socket. 2) Open the screw caps and remove the two screws fixing the front panel.
  • Page 99 Part name Procedure Remarks ‚ „ Horizontal grille 1) Perform the process Note: 2) Remove the screw fixing the louver motor, and remove the louver motor. The horizontal grille can not be 3) Remove the shaft of the horizontal grille from the removed without drain-pan.
  • Page 100 11-2. Microcomputer Part name Procedure Remarks  Common 1) Turn the power supply off to stop the operation of Replace the thermal fuse, terminal procedure air-conditioner. block, microcomputer ass’y and the P .C. board ass’y. 2) Remove the front panel. •...
  • Page 101 Part name Procedure Remarks ‚ Inverter 1. Detachment assembly  1) Perform work from item 1) to 5) of Inverter cover 2) Remove screw (ST1T Ø4 x 10 1 pc.) of the upper P .C. board left part of the inverter cover. (Soldered surface) •...
  • Page 102 Part name Procedure Remarks ƒ Control 1) Disconnect lead wires and connectors connected from board the control board assembly to other parts. assembly 1. Lead wires • Connection with terminal block : 10 wires (Red, Orange, Pink, Yellow, CN601~ Two black wires, Four white wires CN608 •...
  • Page 103 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 104 Part name Procedure Remarks ‡ Pulse 1. Detachment modulat-  ‚ 1) Perform work of item Positioning bracket ing valve at coil side PMV coil 2) Release the coil from the notch by turning it, and remove coil coil from the pulse modulating valve. Lead wire take-out port 2.
  • Page 105 Part name Procedure Remarks ‰ Replacement of tempera- 1) Cut the sensor 100 mm longer than old ture sensor for servicing one. Cutting here only Thermal 2) Cut the protective tube after pulling out Connector sensor part Common service parts of it (200 mm).
  • Page 106 <MCC-1359> – 106 –...
  • Page 107 <MCC-818> – 107 –...

  • Page 108: Exploded Views And Parts List

    12. EXPLODED VIEWS AND PARTS LIST 12-1. Indoor Unit (1) RAS-M10YKV-E, RAS-M13YKV-E, RAS-M16YKV-E RAS-M10YKCV-E, RAS-M13YKCV-E, RAS-M16YKCV-E 407, 408, 409, 410, 411, 412 Location Location Part No. Part No. Description Description 43T60002 Terminal Block, 3P , 43T69048 P.C. Board Ass’y, MCC-772...
  • Page 109 Indoor Unit (2) 219, 220, RAS-M10YKV-E 221, 222 RAS-M13YKV-E RAS-M16YKV-E RAS-M10YKCV-E RAS-M13YKCV-E RAS-M16YKCV-E 224, 242, 226, 227 207, 208 209, 210 211, 212 Location Location Part No. Description Part No. Description 43T00043 Front Panel Ass’y 43T49007 Pipe, Shield 43T00044 Grille, Suction...
  • Page 110 12.2. Outdoor Unit RAS-4M27YAV-E/ RAS-4M27YACV-E/ RAS-3M26YAV-E 11, 42 23 24 32 33 16, 19, 22 Location Location Part No. Description Part No. Description 43005481 Cabinet, Back, Ass’y 43046385 Valve, Pulse, Modulating, SKV-18D26 43005490 Cabinet, Side, Ass’y 43046404 Coil, PMV, DKV-MOZS770B0 43005480 Cabinet, Front, Ass’y 43049740 Holder, Sensor 43005491 Panel, Upper...
  • Page 111 12.3. P.C. Board Layout RAS-4M27YAV-E TO Sensor TE Sensor TS Sensor TD Sensor TGa Sensor TGb Sensor TGc Sensor TGd Sensor Location Part No. Location Part No. Description Description 43050382 Sensor, TC (F6) 43162042 Base, P .C. Board, ABS 4306A060 Terminal Block, 3P 43050398 Sensor, TG (F4) 4306S267 P.C.
  • Page 112 RAS-4M27YACV-E TO Sensor TGa Sensor TGb Sensor TGc Sensor TGd Sensor TD Sensor Location Location Part No. Part No. Description Description 43162042 Base, P .C. Board, ABS 43050382 Sensor, TC (F6) 4306S269 P .C. Board Ass’y, MCC-818 4306A060 Terminal Block, 3P (4M27YACV-E) 43160469 Terminal Block, 6P AC 250V, 20A...
  • Page 113 RAS-3M26YAV-E TO Sensor TE Sensor TS Sensor TD Sensor TGa Sensor TGb Sensor TGc Sensor Location Part No. Location Description Part No. Description 43162042 Base, P .C. Board, ABS 43050382 Sensor, TC (F6) 4306A060 Terminal Block, 3P 43050398 Sensor, TG (F4) 43160469 Terminal Block, 6P 4306S268 P.C.
  • Page 115 Parts List File No. A 01- 004 • Indoor Unit (1) • Indoor Unit (2) • Outdoor Unit • P.C. board Layout RAS-4M27YAV-E RAS-4M27YACV-E RAS-3M26YAV-E...
  • Page 116 43T69046 Indoor Unit (1) P.C. Board Ass’y, MCC-772 (M10YKCV-E) 43T69047 P.C. Board Ass’y, MCC-772 (M13YKCV-E) 43T69048 P.C. Board Ass’y, MCC-772 (M16YKCV-E) 43T69049 P.C. Board Ass’y, MCC-772 (M10YKV-E) 43T69005 43T69050 Sensor, Thermostat, P.C. Board Ass’y, MCC-772 10k , 25°C (M13YKV-E) 43T60002 43T69069 Terminal Block, 3P, P.C.
  • Page 117 Indoor Unit (2) 219, 220, 221, 222 224, 242, 226, 227 207, 208 209, 210 211, 212...
  • Page 118 43T63002 Holder, Remote Controller 43T69032 43T07001 Remote Controller, Wireless Bushing 43T09004 43T00043 (M10YKCV-E, M13YKCV-E, M16YKCV-E) 43T09035 Louver Ass’y Front Panel Ass’y Horizontal 43T69044 Louver Ass’y for 43T00044 Remote Controller Service Grille, Suction (M10YKV-E, M13YKV-E, M16YKV-E) 43T62002 43T07021 Cover, Up, Screw Cap (L) Terminal 43T70001 Drain Hose Ass’y...
  • Page 119 43T49023 43T49024 Holder, Plate EVA-SEAL U Pipe Holder 43T44020 Refrigerant Cycle Ass’y (M10YKCV-E, M13YKCV-E) 43T39003 43T44021 43T82001 Base, Bearing Installation Plate Refrigerant Cycle Ass’y (M16YKCV-E) 43T03001 43T20007 Rear Plate 43T44024 Fan, Cross Flow Refrigerant Cycle Ass’y (M10YKV-E, M13YKV-E) 43T44027 43T49028 43T22002 Refrigerant Cycle Ass’y Plate, EVA-SEAL...
  • Page 120 Outdoor Unit 11, 42 32 33 16, 19, 22...
  • Page 121 4308N369 Manual 43032441 Nipple, Drain 43120198 Fan, Propeller, 43049740 PB493 Holder, Sensor 43121677 Motor, Fan, DC, ICF-140-60-1 43197156 Nut, Flange 43063195 Holder, Thermostat, Bimetal 43050298 43122065 Thermostat, Bimetal, Bell Mouth, Plastic CS-7 125 43041772 43050406 Compressor Ass’y 43191630 Cabinet, Air Outlet DA220A2F-20L Guard, Fan 43097204...
  • Page 122 43046385 43043659 Valve, Pulse, Condenser Ass’y Modulating, (4M27YACV-E) SKV-18D26 43046404 43005491 Coil, PMV, 43058266 43043663 Panel, Upper 43005489 DKV-MOZS770B0 Reactor, Condensor Ass’y Guard, Fin CH-47-Z-K 43046402 Valve, Packed, 9.52 DIA 43047647 Socket, 43005481 9.52 DIA Cabinet, Back, Ass’y 43047401 Bonnet, 3/8 IN, 4301V021 43046403 9.52 CU...
  • Page 123 P.C. Board Layout RAS-4M27YAV-E 4306V009 P.C. Board Ass’y, IPDU MCC-1359 43050382 Sensor, TC (F6) 43063318 TO Sensor Heatsink TE Sensor 43162042 TS Sensor Base, P.C. Board, ABS TD Sensor 43050334 Sensor, TD (F4) 43050398 Sensor, TG (F4) TGa Sensor 4306S267 4306A060 43160469 P.C.
  • Page 124 P.C. Board Layout RAS-4M27YACV-E 4306V009 P.C. Board Ass’y, IPDU MCC-1359 43063318 43050382 Heatsink Sensor, TC (F6) TO Sensor TGa Sensor TGb Sensor 43162042 TGc Sensor Base, P.C. Board, ABS TGd Sensor TD Sensor 43050334 4306S269 Sensor, TD (F4) P.C. Board Ass’y, 4306A060 MCC-818 Terminal Block, 3P...
  • Page 125 P.C. Board Layout RAS-3M26-YAV-EW 4306V009 P.C. Board Ass’y, IPDU MCC-1359 43050382 Sensor, TC (F6) TO Sensor 43063318 TE Sensor Heatsink TS Sensor 43162042 TD Sensor Base, P.C. Board, ABS 43050334 Sensor, TD (F4) 43050398 Sensor, TG (F4) 4306S268 TGa Sensor P.C.

This manual is also suitable for:

Ras-m13ykv-eRas-m16ykv-eRas-4m27yav-eRas-m13ykcv-eRas-m10ykcv-eRas-m16ykcv-e ... Show all

Table of Contents