Toshiba RAS-3M18S3AV-E Service Manual
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Toshiba RAS-3M18S3AV-E Service Manual

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FILE NO. SVM-15102

SERVICE MANUAL

AIR-CONDITIONER
SPLIT TYPE
RAS-3M18S3AV-E,-TR
RAS-2M18S3AV-E,-TR,-A
RAS-2M14S3AV-E,-TR
R410A
October , 201 5

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Summary of Contents for Toshiba RAS-3M18S3AV-E

  • Page 1: Service Manual

    FILE NO. SVM-15102 SERVICE MANUAL AIR-CONDITIONER SPLIT TYPE RAS-3M18S3AV-E,-TR RAS-2M18S3AV-E,-TR,-A RAS-2M14S3AV-E,-TR R410A October , 201 5...

  • Page 2: Table Of Contents

    FILE NO. SVM-15102 CONTENTS 1. SAFETY PRECAUTIONS ............3 2. SPECIFICATIONS ................ 5 3. REFRIGERANT R410A ............. 23 4. CONSTRUCTION VIEWS ............31 5. WIRING DIAGRAM ..............32 6. SPECIFICATIONS OF ELECTRICAL PARTS......35 7. REFRIGERANT CYCLE DIAGRAM........... 36 8. CONTROL BLOCK DIAGRAM ..........44 9.

  • Page 3: Safety Precautions

    FILE NO. SVM-15102 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 FILE NO. SVM-15102 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 •...

  • Page 5: Specifications

    Type Outdoor unit Combinations of indoor unit models that can be connected Refer to page 9 to 14 Heat pump RAS-3M18S3AV-E, -TR Refer to page 15 to 17 Heat pump RAS-2M18S3AV-E, -A, -TR Refer to page 18 to 19 Heat pump...
  • Page 6 FILE NO. SVM-15102 RAS-2M18S3AV-E, -A, -TR Unit model Outdoor RAS- 2M18S3AV-E, -A, -TR RAS- B16N3KV2-E1 + B13N3KV2-E1 Connection indoor unit of this specification Cooling Capacity (kW) Cooling Capacity range (kW) 1.7 to 6.2 Heating Capacity (kW) Heating Capacity range (kW) 1.3 to 7.5 Power supply 1Ph,220-240V,50Hz / 1Ph,220V,60Hz...
  • Page 7 FILE NO. SVM-15102 2-2-1. SUMMARIES OF PRODUCT CHARACTERISTICS RAS-2M18S3AV-A AS/NZS 4755.3.1. These models supports DRM1 DRM2 DRM3. AS/NZS 4755 DRM1 DRM2 DRM3 Demand response mode Description DRM1 Compressor off E30m ≤ R × 0.50 × 0.5 DRM2 E30m ≤ R × 0.75 × 0.5 DRM3 *1: E30m = total electrical energy (kWh) used by the air conditioner for all purposes (including compressors, controls and fans) over a 30 min period.
  • Page 8 FILE NO. SVM-15102 2-2-2. SPECIFICATIONS OF ELECTRICAL PARTS 1. Parts for demand response (Common usage) Parts name Type Specifications Demand response P.C. board MCC-1653 AC230-240V,50Hz VT-02 Transformer AC230V,50/60Hz,150mA 2. Demand response P.C. board DRC signal reception connector CN01 Transformer output DRC signal connector CN102 transmission...
  • Page 9 FILE NO. SVM-15102 2-2. Specifications of Performance When Each Indoor Units is Combined with Other Unit Outdoor unit ： RAS‐3M18S3AV‐E , -TR < Cooling / 220V > Unit capacity Total Indoor unit Operating (kW) Cooling capacity Power consumption Operating current status ΣkBTU (kW)
  • Page 10 FILE NO. SVM-15102 < Cooling / 230V > Unit capacity Total Indoor unit Operating (kW) Cooling capacity Power consumption Operating current status ΣkBTU (kW) 1 unit 2.00 2.28 3.0 ) ( 870 ) ( 1.58 4.05 2.70 3.26 3.2 ) ( 890 ) ( 1.58 4.14...
  • Page 11 FILE NO. SVM-15102 < Cooling / 240V > Unit capacity Total Indoor unit Operating (kW) Cooling capacity Power consumption Operating current status ΣkBTU (kW) 1 unit 2.00 2.18 3.0 ) ( 870 ) ( 1.52 3.88 2.70 3.13 3.2 ) ( 890 ) ( 1.52 3.97...
  • Page 12 FILE NO. SVM-15102 < Heating / 220V > Unit capacity Total Indoor unit Operating (kW) Heating capacity Power consumption Operating current status ΣkBTU (kW) 1 unit 2.70 3.37 1690 ) ( 1.25 8.05 4.00 1160 5.59 1650 ) ( 1.25 7.87 5.00 1580...
  • Page 13 FILE NO. SVM-15102 < Heating / 230V > Unit capacity Total Indoor unit Operating (kW) Heating capacity Power consumption Operating current status ΣkBTU (kW) 1 unit 2.70 3.22 1690 ) ( 1.19 7.70 4.00 1160 5.35 1650 ) ( 1.19 7.53 5.00 1580...
  • Page 14 FILE NO. SVM-15102 < Heating / 240V > Unit capacity Total Indoor unit Operating (kW) Heating capacity Power consumption Operating current status ΣkBTU (kW) 1 unit 2.70 3.08 1690 ) ( 1.14 7.38 4.00 1160 5.13 1650 ) ( 1.14 7.21 5.00 1580...

  • Page 15: The Above Specification Values Are Those Under The Conditions That The Indoor Db/Wb=27/19 ℃ And The Outdoor Db/Wb

    FILE NO. SVM-15102 Outdoor unit ： RAS‐2M18S3AV‐E , -A , -TR < Cooling / 220V > Unit capacity Total Indoor unit Operating (kW) Cooling capacity Power consumption Operating current status ΣkBTU (kW) 1 unit 2.00 2.32 840 ) ( 1.42 4.09 2.70 3.39...
  • Page 16 FILE NO. SVM-15102 < Cooling / 240V > Unit capacity Total Indoor unit Operating (kW) Cooling capacity Power consumption Operating current status ΣkBTU (kW) 1 unit 2.00 2.13 840 ) ( 1.30 3.75 2.70 3.10 860 ) ( 1.30 3.84 3.70 1050 4.66...
  • Page 17 FILE NO. SVM-15102 < Heating / 230V > Unit capacity Total Indoor unit Operating (kW) Heating capacity Power consumption Operating current status ΣkBTU (kW) 1 unit 2.70 3.20 1640 ) ( 1.08 7.48 4.00 1120 5.17 1610 ) ( 1.08 7.35 5.00 1540...
  • Page 18 FILE NO. SVM-15102 Outdoor unit ： RAS‐2M14S3AV‐E , -TR < Cooling / 220V > Unit capacity Total Indoor unit Operating (kW) Cooling capacity Power consumption Operating current status ΣkBTU (kW) 1 unit 2.00 2.32 840 ) ( 1.54 4.09 2.70 3.39 860 ) ( 1.54...
  • Page 19 FILE NO. SVM-15102 < Heating / 220V > Unit capacity Total Indoor unit Operating (kW) Heating capacity Power consumption Operating current status ΣkBTU (kW) 1 unit 2.70 3.34 1390 ) ( 1.13 6.66 4.00 1120 5.41 1360 ) ( 1.13 6.52 4.40 1260...
  • Page 20 FILE NO. SVM-15102 2-3-1. Operation Characterisic Curve <Cooling> <Heating> RAS-3M18S3AV-E, -TR RAS-3M18S3AV-E, -TR ・Conditions ・Conditions Indoor / WB19 Indoor ：DB20 ：DB27 Indoor air flow ： High Indoor air flow ： High Pipe length ： 5m×3 Pipe length ： 5m×3 3 units operating...
  • Page 21 FILE NO. SVM-15102 2-3-2. Capacity Variation Ratio According to outdoor Temperature <Cooling> <Heating> RAS-3M18S3AV-E, -TR RAS-3M18S3AV-E, -TR Current limited start ・Conditions Indoor ：DB20 Indoor air flow ： High Pipe length ： 5m×3 3 units operating ・Conditions Indoor / WB19 ：DB27 Indoor air flow ：...
  • Page 22 FILE NO. SVM-15102 2-3-3. Capacity Variation Ratio according to Pipe Length <Cooling> <Heating> RAS-3M18S3AV-E, -TR RAS-3M18S3AV-E, -TR ・Conditions ・Conditions Indoor ：DB20 Indoor ：DB27 /WB19 Outdoor ：DB7 /DW6 Outdoor ：DB35 Indoor air flow: ：High Indoor air flow: ：High 3 units operating 3 units operating Standard pipe length ：...

  • Page 23: Refrigerant R410A

    FILE NO. SVM-15102 3. REFRIGERANT R410A This air conditioner adopts the new refrigerant HFC 6. When an air conditioning system charged with a (R410A) which does not damage the ozone layer. large volume of refrigerant is installed in a small room, it is necessary to exercise care so that, The working pressure of the new refrigerant R410A even when refrigerant leaks, its concentration...
  • Page 24 FILE NO. SVM-15102 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 25 FILE NO. SVM-15102 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 26 FILE NO. SVM-15102 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 16.0 16.2 12.9 15.88 19.0 19.7 16.0 19.05 23.3 24.0 19.2 Fig.
  • Page 27 FILE NO. SVM-15102 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 28: Recharging Of Refrigerant

    FILE NO. SVM-15102 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 29 FILE NO. SVM-15102 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 30 FILE NO. SVM-15102 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. •...

  • Page 31: Construction Views

    FILE NO. SVM-15102 4. CONSTRUCTION VIEWS 4-1. Outdoor Unit - 31 -...

  • Page 32: Wiring Diagram

    FILE NO. SVM-15102 5. WIRING DIAGRAM 5-1. Outdoor Unit RAS-2M18S3AV-A REACTOR CN300 (WHI) MAIN P.C. BOARD FAN MOTOR POWER (MCC-1645) SUPPLY CIRCUIT REACTOR COMPRESSOR CN704 (WHI) CN500 (BLU) 4WAY VALVE COIL THERMOSTAT COMPRESSOR T3.15A 250V CN501 P< (GRN) T25A HIGH PRESSURE 250V SWITCH CN806...
  • Page 33 FILE NO. SVM-15102 5.2 Outdoor Unit RAS-2M18S3AV-E,-TR RAS-2M14S3AV-E,-TR REACTOR CN300 MAIN P.C. (WHI) BOARD (MCC-1645) FAN MOTOR POWER SUPPLY CIRCUIT REACTOR COMPRESSOR CN704 (WHI) CN500 (BLU) 4WAY VALVE COIL THERMOSTAT COMPRESSOR T3.15A 250V CN501 P< (GRN) HIGH PRESSURE T25A SWITCH 250V CN806 (BLU)
  • Page 34 FILE NO. SVM-15102 5.3 Outdoor Unit RAS-3M18S3AV-E,-TR REACTOR CN300 (WHI) MAIN P.C. BOARD FAN MOTOR (MCC-1645) POWER SUPPLY CIRCUIT REACTOR COMPRESSOR CN704 (WHI) CN500 (BLU) 4WAY VALVE COIL THERMOSTAT COMPRESSOR T3.15A 250V CN501 P< (GRN) HIGH PRESSURE T25A SWITCH 250V...

  • Page 35: Specifications Of Electrical Parts

    FILE NO. SVM-15102 6. SPECIFICATIONS OF ELECTRICAL PARTS 6-1. Outdoor Unit No. Parts name Model name Rating Compressor DA136A1T-40N ― Outdoor fan motor ICF-140-43-4R Output 43W Reactor CH-57 10mH、16A Reactor CH-76 9.9mH、1A 4-way valve coil SQ-D27012-000752 DC12V PMV coil CAM-MD12TCTH-5 DC12V P.C.

  • Page 36: Refrigerant Cycle Diagram

    FILE NO. SVM-15102 7. REFRIGERANT CYCLE DIAGRAM ・RAS-3M18S3AV-E , -TR Temp. measurement Indoor unit A C room B room C room B room Evaporator Cross flow fan Per 1 unit Max. : 25m Min. : 2m Connecting pipe Connecting pipe...
  • Page 37 FILE NO. SVM-15102 ・RAS-2M18S3AV-E , -A , -TR ・RAS-2M14S3AV-E , -TR Temp. measurement Indoor unit A B room B room Evaporator Cross flow fan Per 1 unit Max. : 20m Connecting pipe Min. : 2m Connecting pipe Thickness : 0,8mm Thickness : 0,8mm Total dia.6,35...
  • Page 38 FILE NO. SVM-15102 7-2.　Operation　Data Outdoor　Unit：RAS-3M18S3AV-E, -TR <Cooling> Temperature No.of Standard Heat exchanger Compressor Indoor unit Indoor condition operating pressure pipe temperature revolution Indoor Outdoor units P（MP） T1(℃) T2(℃) （rps） 1 unit 1.0 to 1.2 14 to 16 39 to 41 High －...
  • Page 39 FILE NO. SVM-15102 7-2.　Operation　Data Outdoor　Unit：RAS-3M18S3AV-E, -TR <Heating> Temperature No.of Standard Heat exchanger Compressor Indoor unit Indoor condition operating pressure pipe temperature revolution Indoor Outdoor units P（MP） T1(℃) T2(℃) （rps） 1 unit 2.2 to 2.4 39 to 41 3 to 5 High －...
  • Page 40 FILE NO. SVM-15102 7-2.　Operation　Data Outdoor　Unit：RAS-2M18S3AV-E, -A, -TR <Cooling> Temperature No.of Standard Heat exchanger Compressor Indoor unit Indoor condition operating pressure pipe temperature revolution Indoor Outdoor units P（MP） T1(℃) T2(℃) （rps） 1 unit － － 1.0 to 1.2 14 to 16 39 to 41 High 0.8 to 1.0 10 to 12...
  • Page 41 FILE NO. SVM-15102 7-2.　Operation　Data Outdoor　Unit：RAS-2M18S3AV-E, -A, -TR <Heating> Temperature No.of Standard Heat exchanger Compressor Indoor Indoor unit condition operating pressure pipe temperature revolution Indoor Outdoor units P（MP） T1(℃) T2(℃) （rps） 1 unit － － 2.2 to 2.4 37 to 39 3 to 5 High －...
  • Page 42 FILE NO. SVM-15102 7-2.　Operation　Data Outdoor　Unit：RAS-2M14S3AV-E, -TR <Cooling> Temperature No.of Standard Heat exchanger Compressor Indoor unit Indoor condition operating pressure pipe temperature revolution Indoor Outdoor units P（MP） T1(℃) T2(℃) （rps） 1 unit － － 1.0 to 1.2 14 to 16 39 to 41 High 0.8 to 1.0 10 to 12 41 to 43...
  • Page 43 FILE NO. SVM-15102 7-2.　Operation　Data Outdoor　Unit：RAS-2M14S3AV-E, -TR <Heating> Temperature No.of Standard Heat exchanger Compressor Indoor unit Indoor condition operating pressure pipe temperature revolution Indoor Outdoor units P（MP） T1(℃) T2(℃) （rps） 1 unit 2.2 to 2.4 37 to 39 3 to 5 High －...

  • Page 44: Control Block Diagram

    FILE NO. SVM-15102 8. CONTROL BLOCK DIAGRAM 8-1．Outdoor Unit (Inverter Assembly) RAS-3M18S3AV-E,-TR Outdoor temp. sensor Gas side pipe temp. sensor Suction temp. sensor Evaporator temp. sensor Discharge temp. sensor MCC-1665 (Control P.C.B) A unit P.M.V. Ｍ.Ｃ.Ｕ Driver A unit Serial Signal ・Inverter outdoor frequency control...
  • Page 45 FILE NO. SVM-15102 8-2．Outdoor Unit (Inverter Assembly) RAS-2M18S3AV-E,-TR, RAS-2M14S3AV-E,-TR Outdoor temp. sensor Gas side pipe temp. sensor Suction temp. sensor Evaporator temp. sensor Discharge temp. sensor MCC-1665 (Control P.C.B) A unit P.M.V. Ｍ.Ｃ.Ｕ Driver A unit Serial Signal ・Inverter outdoor frequency control circuit Communication ・A/D converter function...
  • Page 46 FILE NO. SVM-15102 8-3．Outdoor Unit (Inverter Assembly) RAS-2M18S3AV-A Outdoor temp. sensor Gas side pipe temp. sensor Suction temp. sensor Evaporator temp. sensor Discharge temp. sensor MCC-1665 (Control P.C.B) A unit P.M.V. Ｍ.Ｃ.Ｕ Driver A unit Serial Signal ・Inverter outdoor frequency control circuit Communication ・A/D converter function...

  • Page 47: Operation Description

    FILE NO. SVM-15102 9. OPERATION DESCRIPTION 9-1. Outline of Air Conditioner Control • Detection of inverter input current and current release operation This air conditioner is a capacity-variable type air • Over-current detection and prevention operation conditioner, which uses DC motor for the indoor fan to IGBT module (Compressor stop function) motor and the outdoor fan motor.
  • Page 48 FILE NO. SVM-15102 9-2. Operation Description 1. Basic operation ........................49 1. Operation control ....................... 49 2. Operating mode selection when performing 2-room operation ......... 50 3. Cooling/Heating operation ....................50 2. Outdoor fan motor control ....................... 51 3. Capacity control ........................52 Current release control ......................

  • Page 49: Basic Operation

    FILE NO. SVM-15102 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 50: Operating Mode Selection When Performing 2-Room Operation

    FILE NO. SVM-15102 Item Operation flow and applicable data, etc. Description 2. Operating mode selection when performing 2-room operation 1. Basic 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 51: Outdoor Fan Motor Control

    Fan motor ON Air conditioner Alarm 3) Fan lock display 4) Motor operates as shown in the table below. Cooling operation, dry operation 　RAS-3M18S3AV-E, -TR Compressor revolution (rps) 〜20 〜50 〜55 56〜 Outdoor temp. sensor To Normal operation To≧38℃...
  • Page 52 FILE NO. SVM-15102 Item Operation flow and applicable data, etc. Description 2. Outdoor fan Heating operation motor control 　RAS-3M18S3AV-E, -TR Compressor revolution (rps) 〜31 〜46 47〜 Outdoor temp. sensor To Normal operation To≧10℃ 0≦To＜10℃ -5≦To＜0℃ To＜-5℃ Sleep or quiet To≧10℃...

  • Page 53: Capacity Control

    FILE NO. SVM-15102 Item Operation flow and applicable data, etc. Description 3. Capacity RAS-2M18S3AV-E, -TR, -A Operation No.of Combination Compressor Operation No.of Combination Compressor control mode operating of indoor units revolution mode operating of indoor units revolution unit (kBTU) (rps) unit (kBTU) (rps)

  • Page 54: Winding/Coil Heating Control

    FILE NO. SVM-15102 Item Operation flow and applicable data, etc. Description 5. 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 : Outdoor temperature To Winding/Coil...

  • Page 55: Discharge Temperature Control

    FILE NO. SVM-15102 Item Operation flow and applicable data, etc. Description 1. Purpose 8. Discharge 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.

  • Page 56: Intermittent Operation Control For Indoor Fans Of The Indoor Unit At Thermo-Off Side In Heating Operation

    FILE NO. SVM-15102 9-3. Intermittent Operation Control for Indoor Fans of the Indoor Unit at Thermo-off Side in Heating Operation While heating operation is executed in two rooms, if room temperature reached the setup temperature in one room and thermo-off occurred, the following operations start. (Refer to the figure below.) 1.
  • Page 57 FILE NO. SVM-15102 9-4-2. Service switch setting and service support function You can choose service switch setting and service support function. Operating method is as below. Turn on the circuit breaker Push SW01 & 02 at the same time for 5 sec or more Initial status D800 D801...
  • Page 58 FILE NO. SVM-15102 [Confirmation method of various settings] You can confirm that various settings are validated. 1) Check LED displays are in the initial status. If it are not so, return them to the initial status. 2) Push and hold SW01 for 5 seconds or more. D804 changes to slow flashing. 3) Push SW01 several times and then stop it at the point where LED display (D800 to D804) to be checked.
  • Page 59 FILE NO. SVM-15102 9-4-4. Service support function Various displays are available by setting service switches. [Operating method] 1) Check LED display is the initial status. If it is not so, set the initial status. 2) Push SW01 several times and stop it at the item that you want to check. ○:ON (○*:3 sec ON/0.5 sec OFF)●:OFF Display ◎:Rapid Flashing(5 times/sec) ◇:Slow Flashing(1 time /sec)
  • Page 60 FILE NO. SVM-15102 3) Pushing SW02, the display changes to next item. To see other display contents, repeat that. 4) To finish LED display, be sure to execute item 1) to return LED to the initial status (error display of current occurrence) and then finish LED display.
  • Page 61 FILE NO. SVM-15102 C. Sensor, current, compressor operation frequency, PMV opening, Miswiring (mispiping) check display Using the service display function, you can check a variety of information. ○:ON (○*:3 sec ON/0.5 sec OFF)●:OFF ◎:Rapid Flashing(5 times/sec) ◇:Slow Flashing(1 time /sec) display Contents D800 D801 D802 D803 D804...
  • Page 62 9-4-5. How to set the SERVICE SWITCH SETTING. If you want to set the "COOLING ONLY SETTING OFF ⇒ ON" . ○:ON, ●:OFF, ◎:Rapid Flashing(5 times/sec), ◇:Slow Flashing(1 time/sec) Turn on the circuit breaker Initial status D800 D801 D802 D803 D804 D805 (Yellow)
  • Page 63 9-4-6. How to set the SERVICE SUPPORT FUNCTION. If you want to check the "COMPRESSOR FREQUENCY" . ○:ON, ●:OFF, ◎:Rapid Flashing(5 times/sec), ◇:Slow Flashing(1 time/sec) Turn on the circuit breaker Initial status D800 D801 D802 D803 D804 D805 (Yellow) (Yellow) (Yellow) (Yellow) (Yellow)

  • Page 64: Installation Procedure

    FILE NO. SVM-15102 10. INSTALLATION PROCEDURE 10-1. 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 has been changed.(1/2 UNF 20 threads per inch) •...
  • Page 65 FILE NO. SVM-15102 10-2. Outdoor Unit 10-2-1. Accessory and Installation Parts CD-ROM Rubber cap Installation manual (Installation manual) (Water-proof) ∗1 F-GAS label Drain nipple ∗1 ∗1 Part that do not exist in RAS-2M18S3AV-A,-TR, RAS-2M14S3AV-TR 10-2-2. Refrigerant Piping • Piping kit used for the conventional refrigerant cannot be used. •...

  • Page 66: Installation Location

    FILE NO. SVM-15102 10-2-5. Installation Draining Off the Water from the Outdoor Unit Install 2 waterproof rubber caps and the drain nipple to drain off the Installation Location ■ water from the outdoor unit. • Seal the knock-out holes and screw/thread areas tightly using a silicon •...

  • Page 67: Air Purge

    FILE NO. SVM-15102 Refrigerant piping Air Purge ■ From the sake of environmental protection, use a vacuum pump to extract the air during installation. CAUTION * Prepare a 4 mm hexagon wrench. 1. Connect a charge hose. Install in rooms that are 5 m or larger.
  • Page 68 fl uorinated greenhouse gas. connection Ensure that the fl uorinated greenhouse gas Flare nut connections * Check point example (RAS-3M18S3AV-E) (Outdoor unit) is never vented into the atmosphere during installation, service or disposal. Performing Additional Installation of an Indoor Unit ■...
  • Page 69 FILE NO. SVM-15102 4. Connect the wires for the power source and each indoor unit. CAUTION • Connect the connecting cable to the terminal as identifi ed by the matching numbers on the terminal block of the indoor and the outdoor •...
  • Page 70 FILE NO. SVM-15102 3. Turn on the circuit breaker to supply electricity. Gas Leak Inspection ■ In the initial LED display status, D805 is lighted as below. Refer to the “ Gas Leak Inspection”. : ON, : OFF, : Rapid Flashing (5 times/sec.), ...

  • Page 71: Refrigeration Cycle

    FILE NO. SVM-15102 Pump-down Operation 4. Hold down SW01 for at least 5 seconds, and check that D800 is lighted and D804 light is fl ashing ( 1 time/sec.). Pump-down Operation (Recovering refrigerant) ■ D800 D801 D802 D803 D804 D805 ...

  • Page 72: How To Diagnose The Trouble

    FILE NO. SVM-15102 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 73 FILE NO. SVM-15102 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.

  • Page 74: Primary Judgment

    FILE NO. SVM-15102 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 Display P.C.
  • Page 75 FILE NO. SVM-15102 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 76 FILE NO. SVM-15102 11-4-2 Caution at Servicing 1. After using the service mode of remote controller finished, press the [ ] button to reset the remote controller to normal function. 2. After finished the diagnosis by the remote controller, turn OFF power supply and turn its ON again to reset the air conditioner to normal operation.
  • Page 77 FILE NO. SVM-15102 Block distinction Operation of diagnosis function Action and Judgment Check Check Display flashing Block Cause of operation conditioner code code error status Serial signal 1) Defective wiring of the Indoor unit Flashes when 1) to 3) The outdoor unit never and connecting connecting cable or operates...
  • Page 78 FILE NO. SVM-15102 Block distinction Operation of diagnosis function Action and Judgment Check Check Display flashing Block Cause of operation conditioner code code error status Outdoor P.C. Current on inverter circuit All OFF Flashes after 1. Remove connecting lead wire of the board is over limit in short time.
  • Page 79 FILE NO. SVM-15102 Block distinction Operation of diagnosis function Action and Judgment Check Check Display flashing Block Cause of operation conditioner code code error status Compressor drive output error. All OFF Flashes after 1. Check installation conditions such as (Relation of voltage, current error is detected packed valve opening, refrigerant 8 times*.
  • Page 80 FILE NO. SVM-15102 Block distinction Operation of diagnosis function Action and Judgment Check Check Display Block Cause of operation conditioner code code flashing error status Compressor does not rotate. All OFF Flashes after 1. Remove connecting lead wire of the Because of missed wiring, error is detected compressor, and operate again.
  • Page 81 FILE NO. SVM-15102 Block distinction Operation of diagnosis function Action and Judgment Check Check Display Block Cause of operation conditioner code code flashing error status Return signal of the outdoor Indoor unit Flashes when 1. . Check power supply (Rate +10%) operates error is detected unit has been sent when...
  • Page 82 FILE NO. SVM-15102 11-5. Judgment of Trouble by Symptom 11-5-1. 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 83 FILE NO. SVM-15102 Service Support Function (LED Display, Switch Operation) 1. Outline A various setup and operation check can be performed by the pushdown button switches (SW01,02) on the outdoor P.C. board(Display PCB). Operation part and Display part on MCC-1646 (Display PCB) Part No.
  • Page 84 FILE NO. SVM-15102 11-6. Trouble Diagnosis by Outdoor LED For the outdoor unit, the self-diagnosis is possible by LED (Green) and five LEDs (Yellow). Green LED (D805) and Yellow LEDs (D800 to D804) are provided on the display P.C. board MCC-1646. 1.
  • Page 85 FILE NO. SVM-15102 :ON ( *:3 sec ON / 0.5 sec OFF) :OFF Check Outdoor Check and troubleshooting code LED display (Item without special mention indicates part of outdoor unit.)  [Case thermo operation, Power supply error ] [1C] Is AC mains voltage correct? Confirm power supply (198 to 264V) construction.
  • Page 86 FILE NO. SVM-15102 :ON ( *:3 sec ON / 0.5 sec OFF) :OFF Check Outdoor Check and troubleshooting code LED display (Item without special mention indicates part of outdoor unit.) [18] ∗ There is a possibility that it is one of the following errors. Confirm LED on display P.C.
  • Page 87 FILE NO. SVM-15102 :ON ( *:3 sec ON / 0.5 sec OFF) :OFF Check Outdoor Check and troubleshooting code LED display (Item without special mention indicates part of outdoor unit.) [1C] ∗ There is a possibility that it is one of the following errors. Confirm LED on display P.C.
  • Page 88 FILE NO. SVM-15102 :ON ( *:3 sec ON / 0.5 sec OFF) :OFF 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] (Continued) Is connection of CN604 Correct connector.
  • Page 89 FILE NO. SVM-15102 :ON ( *:3 sec ON / 0.5 sec OFF) :OFF Check Outdoor Check and troubleshooting code LED display (Item without special mention indicates part of outdoor unit.)    *  [1E] [Discharge temp. error] Is there gas leak? Repair defective position.
  • Page 90 FILE NO. SVM-15102 :ON ( *:3 sec ON / 0.5 sec OFF) :OFF Check Outdoor Check and troubleshooting code LED display (Item without special mention indicates part of outdoor unit.) [20] ∗ There is a possibility that it is one of the following errors. Confirm LED on display P.C.
  • Page 91 FILE NO. SVM-15102 :ON ( *:3 sec ON / 0.5 sec OFF) :OFF 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. [21] Confirm LED on display P.C.

  • Page 92: Troubleshooting

    FILE NO. SVM-15102 11-7. TROUBLESHOOTING RAS-2M18S3AV-A 1. Before Troubleshooting Each model corresponds to DRED (Demand response enabling device) by AS/NZS 4755.3.1. DRM1, DRM2 and DRM3 are executed as follows, upon directions from the power company, Be sure to confirm they are not operated before usually troubleshooting. Air conditioner demand response Demand response mode Description...
  • Page 93 FILE NO. SVM-15102 Troubleshooting for Demand Unit Demand P.C. board is failed. Exchange of transformer, Fuse exchange of Demand F100 is melted. P.C. board Take off wiring of Exchange of transformer, CN102. Short-circuit is exchange of Demand found between “~” and P.C.
  • Page 94 FILE NO. SVM-15102 11-8. Inspection of the Main Parts [1] Sensor characteristic table : Discharge temp. sensor : Outdoor temp. sensor : Outdoor heat exchanger temp. sensor : Suction temp. sensor TGa to TGc : Gas side temp. sensor TO, TE, TS, TGa to TGc Temperature (˚C) Outdoor Unit Part name...

  • Page 95: How To Simply Judge Whether Outdoor Fan Motor Is Good Or Bad

    FILE NO. SVM-15102 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 96 FILE NO. SVM-15102 11-11. How to check the DRC operation 1. Symptom • DRC can't operate. 2. Cause The following causes are considered when the DRC does not normally operate. 1) Transformer failure 2) Connecting of DRED wire failure 3) DRC board failure How to simply judge whether DRC operation is good or bad Turn OFF the breaker.
  • Page 97 FILE NO. SVM-15102 <MCC-1645> Lead wire for grounding Electrolytic capacitors(760μF/400V) P07(Black) Power supply connecting lead wire Lead and connecter for Reactor Lead and connecter for Reactor P01(Black), P02(White) P16,P17(White) P21,P22(Gray) Power supply protective fuse F01(250V,25A) Varistor protective Fuse F03(250V,3.15A,plastic case) Case thermo connector CN500(Blue) 4-way valve connector...
  • Page 98 <MCC-1665> Indoor/Outdoor communication wire protective Fuse F03(250V,3.15A,plastic case) Power, Alarm display LED D801(Red) Indoor/Outdoor communication signal LED UART communication connector D501,D508,D515(Green,Outdoor→Indoor) CN802(Blue) Connector for display CN805(White) Demand response connector CN809(Pink) Temp. sensor connector TS CN603(White) TO CN602(White) TE CN601(White) TD CN600(White) TGC CN606(Green) TGB CN605(Red) TGA CN604(Yellow)
  • Page 99 11-12 +12V COM-DRM1 (Demand Response Mode 1) Operation in this mode is compressor off COM-DRM2 (Demand Response Mode 2) Operation in this mode is the air conditioner continues to cool or heat, by the electrical energy consumed is not more than 50% of the total electrical energy. COM-DRM3 (Demand Response Mode 3) Operation in this mode is the air conditioner continues to cool or heat, by the electrical nergy comsumed is not more than 75% of the total electrical energy.

  • Page 100: How To Replace The Main Parts

    FILE NO. SVM-15102 12. HOW TO REPLACE THE MAIN PARTS 12-1. Outdoor Unit No. Part name Procedure Remarks ① Common 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 main switch of the...
  • Page 101 FILE NO. SVM-15102 No. Part name Procedure Remarks ② Front 1.Detachment Motor base cabinet 1) Perform work 1 of ①. 2) Remove the front cabinet. Inverter cover (ST1TØ4×10L 2pcs. : fix to motor base) (ST1TØ4×10L 1pc. : fix to inverter cover) (ST1TØ4×10L 4pcs.
  • Page 102 FILE NO. SVM-15102 No. Part name Procedure Remarks Inverter 1) Perform works 1 of ① and ②. ③ assembly Never disassemble the inverter until 1minute after the power supply was turned off because there is a fear that an electric shock may occur. 2) Remove screws.
  • Page 103 FILE NO. SVM-15102 No. Part name Procedure Remarks ③ Inverter 10) Disconnect the leads connected to the other assembly parts from the P.C. assembly. (continued) These connectors have the lock. The lock must be released before they are disconnected. Main P.C. board CN300 : Outdoor fan motor (3P : white) CN500 : Thermostat for compressor (2P : blue) CN501 : High pressure switch (3P : green)
  • Page 104 FILE NO. SVM-15102 No. Part name Procedure Remarks ④ Side cabinet 1.Side cabinet (right) 1) Perform works 1 of ① and ②. 2) Remove screws. (ST1TØ4×10L 2pcs. : fix to inverter assembly) (ST1TØ4×10L 4pcs. : fix to valve plate) (ST1TØ4×10L 2pcs. : fix to base plate) 2.Side cabinet (left) 1) Perform works 1 of ①...
  • Page 105 FILE NO. SVM-15102 No. Part name Procedure Remarks ⑥ Compressor 1) Perform works from ① to ⑤. 2) Recover the refrigerant gas form the outdoor unit. Partition 3) Remove partition. (ST1TØ4×10L 5pcs.) 4) Remove the sound-insulation material. 5) Remove terminal cover of the compressor, and disconnect lead wire of the compressor and the comp.
  • Page 106 FILE NO. SVM-15102 No. Part name Procedure Remarks ⑧ PMV coil 1.Detachment 1) Perform works from ① to ④. 2) Remove the coil by pulling it up from PMV body. 2. Attachment 1) When assembling the coil into the PMV body, ensure that the coil lock is installed properly in the pipe.
  • Page 107 FILE NO. SVM-15102 No. Part name Procedure Remarks ⑩ TE sensor (outdoor heat exchanging temperature sensor) • Attachment With the sensor leads pointing in the direction shown in the figure, install the sensor onto the condenser output pipe. ⑪ TS sensor (Suction pipe temperature sensor) •...
  • Page 108 FILE NO. SVM-15102 No. Part name Procedure Remarks High pressure 1.Detachment ⑮ switch 1) Perform work of ①. 2) Recover the refrigerant gas form the outdoor unit. 3) Perform work of ②, ③, ④ and ⑤. 4) Remove the sound-insulation material and partition. 5) Remove the high pressure switch by the burner.
  • Page 109 FILE NO. SVM-15102 ＊RAS-2M18S3AV-A only No. Part name Procedure Remarks ⑯ Demand P.C. board Never forget to put on the gloves at working time; otherwise an injury will be caused by the parts etc. When working, be sure to use the insulate tools and put on the insulated gloves.

  • Page 110: Exploded Views And Parts List

    FILE NO. SVM-15102 13. EXPLODED VIEWS AND PARTS LIST 13-1. Outdoor Unit RAS-3M18S3AV-E, RAS-2M18S3AV-E, RAS-2M14S3AV-E Location Part Location Part Description Description 43T00559 FRONT CABINET 43T46347 BODY PMV 43T00560 LEFT CABINET 43T63329 COIL PMV 43T42345 BASE PLATE ASSEMBLY 43T58306 REACTOR 43T00561...
  • Page 111 FILE NO. SVM-15102 13-2. Outdoor Unit RAS-3M18S3AV-TR, RAS-2M18S3AV-TR, RAS-2M14S3AV-TR Location Part Location Part Description Description 43T00559 FRONT CABINET 43T63329 COIL PMV 43T00560 LEFT CABINET 43T58306 REACTOR 43T42345 BASE PLATE ASSEMBLY 43T20331 PROPELLER FAN FAN MOTOR 43T00561 UPPER CABINET 43T21375 43T19349 FAN GUARD 43T47001 NUT FLANGE...
  • Page 112 FILE NO. SVM-15102 13-3. Outdoor Unit RAS-2M18S3AV-A Location Part Location Part Description Description FRONT CABINET 43T00559 43T58306 REACTOR 43T00560 LEFT CABINET 43T20331 PROPELLER FAN 43T42345 BASE PLATE ASSEMBLY 43T21375 FAN MOTOR 43T00561 UPPER CABINET 43T47001 NUT FLANGE 43T19349 FAN GUARD 43T97001 43T00673 PACKED VALVE COVER ASSEMBLY...

  • Page 113: Inverter Assembly

    FILE NO. SVM-15102 13-2. Inverter Assembly RAS-3M18S3AV-E, RAS-3M18S3AV-TR Location Part Location Part Description Description 43T6V639 PCB BORAD 43T50352 TEMPERATURE SENSOR 43T6V640 PCB BORAD 43T50353 TEMPERATURE SENSOR TC-SENSOR(TO) 43T61325 BASE,PC BORAD 43T50360 43T61320 BASE, PC BOARD 43T50334 TEMPERATURE SENSOR 43T6V418 PC BOARD ASSY...
  • Page 114 FILE NO. SVM-15102 13-3. Inverter Assembly RAS-2M18S3AV-E, RAS-2M14S3AV-E Location Part Location Part Description Description 43T6V639 PCB BORAD 43T60425 FUSE-HOLDER 43T6V640 PCB BORAD 43T50352 TEMPERATURE SENSOR 43T61325 BASE,PC BORAD 43T50353 TEMPERATURE SENSOR 43T61320 BASE, PC BOARD 43T50360 TC-SENSOR(TO) 43T6V418 PC BOARD ASSY 43T50334 TEMPERATURE SENSOR 43T60423...
  • Page 115 FILE NO. SVM-15102 13-4. Inverter Assembly RAS-2M18S3AV-A Location Part Location Part Description Description 43T6V639 PCB BORAD 43T50360 TC-SENSOR(TO) 43T6V640 PCB BORAD 43T50334 TEMPERATURE SENSOR 43T61325 BASE,PC BORAD 43T50361 SENSOR-TEMP 43T61320 BASE, PC BOARD 43T50362 SENSOR-TEMP 43T6V418 PC BOARD ASSY 43T63319 HOLDER,SENSOR 43T60423 TERMINAL, 6P...

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