Toshiba RAV-GM302ATP-E Service Manual
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Toshiba RAV-GM302ATP-E Service Manual

Toshiba RAV-GM302ATP-E Service Manual

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FILE NO. SVM-22002
SERVICE MANUAL
AIR-CONDITIONER
(SPLIT TYPE)
OUTDOOR UNIT
<DIGITAL INVERTER>
RAV-GM302ATP-E
RAV-GM402ATP-E
R32
June, 2022

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  • Page 1 FILE NO. SVM-22002 SERVICE MANUAL AIR-CONDITIONER (SPLIT TYPE) OUTDOOR UNIT <DIGITAL INVERTER> RAV-GM302ATP-E RAV-GM402ATP-E June, 2022...

  • Page 2: Table Of Contents

    Adoption of R32 Refrigerant Original instruction This air conditioner adopts the HFC refrigerant (R32) which does not destroy the ozone layer. This outdoor unit is designed exclusively for use with R32 refrigerant. Be sure to use in combination with a R32 refrigerant indoor unit. CONTENTS SAFETY CAUTION ....................

  • Page 3: Safety Caution

    SAFETY CAUTION Please read carefully through these instructions that contain important information which complies with the Machinery Directive (Directive 2006/42/EC), and ensure that you understand them. Some of the details provided in these instructions differ from the service manual, and the instructions provided here take precedence.
  • Page 4 Definition of Protective Gear When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves and “safety” work clothing. In addition to such normal protective gear, wear the protective gear described below when undertaking the special work detailed in the table below.
  • Page 5 Warning Indications on the Air Conditioner Unit [Confirmation of warning label on the main unit] Confirm that labels are indicated on the specified positions If removing the label during parts replace, stick it as the original. This mark is for R32 refrigerant only. Refrigerant type is written on nameplate of outdoor unit.
  • Page 6 CAUTION CAUTION Do not touch the aluminum fins Do not touch the aluminum fins of the of the unit. unit. Doing so may result in injury. Doing so may result in injury. CAUTION CAUTION BURST HAZARD BURST HAZARD Open the service valves before the operation, Open the service valves before otherwise there might be the burst.
  • Page 7 Precaution for Safety The appliance shall be installed in accordance with national wiring regulations. Capacity shortages of the power circuit or an incomplete installation may cause an electric shock or fire. DANGER Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breaker to the OFF position.
  • Page 8 When you access inside of the electric cover to repair electric parts, wait for about five minutes after turning off the breaker. Do not start repairing immediately. Otherwise you may get electric shock by touching terminals of high-voltage capacitors. Natural discharge of the capacitor takes Electric about five minutes.
  • Page 9 When performing repairs using a gas burner, replace the refrigerant with nitrogen gas because the oil that coats the pipes may otherwise burn. When repairing the refrigerating cycle, take the following measures. 1) Be attentive to fire around the cycle. When using a gas stove, etc., be sure to put out fire before work;...
  • Page 10 When the refrigerant gas leaks, find up the leaked position and repair it surely. If the leaked position cannot be found up and the repair work is interrupted, pump-down and tighten the service valve, otherwise the refrigerant gas may leak into the room. When gas touches to fire such as fan heater, stove or cocking stove, it may generate noxious gases, causing a fire though the refrigerant gas itself is innocuous.
  • Page 11 Only a qualified installer ( 1) or qualified service person ( 1) is allowed to install the air conditioner. If the air conditioner is installed by an unqualified individual, a fire, electric shocks, injury, water leakage, noise and/or vibration may result. Before starting to install the air conditioner, read carefully through the Installation Manual, and follow its instructions to install the air conditioner.
  • Page 12 ( 1) Refer to the “Definition of Qualified Installer or Qualified Service Person.” Declaration of Conformity Manufacturer: Toshiba Carrier (Thailand) Co., Ltd. 144 / 9 Moo 5, Bangkadi Industrial Park, Tivanon Road, Tambol Bangkadi, Amphur Muang, Pathumthani 12000, Thailand TCF holder: TOSHIBA CARRIER EUROPE S.A.S...
  • Page 13 Specifications Sound power level (dBA) Model Weight (kg) Cooling Heating RAV-GM302ATP-E RAV-GM402ATP-E : Under 70 dBA - 13 -...
  • Page 14 Refrigerant R32 This air conditioner adopts a new HFC type refrigerant (R32) which does not deplete the ozone layer. 1. Safety Caution Concerned to Refrigerant R32 Be sure that water, dust, the former refrigerant or the former refrigerating oil is not mixed into the refrigerating cycle of the air conditioner with refrigerant R32 during installation work or service work.
  • Page 15 <Caution items> 1) The opposite side dimension of the air-conditioner's flared nut using R32 and the shape of the charge port are the same as those of R410A. 2) Be careful not to charge refrigerant by mistake. Should the different type of refrigerant mix in, be sure to recharge the refrigerant 3) Do not mix the other refrigerant or refrigerating oil with the refrigerant.
  • Page 16 4. Tools Tools exclusive for R32 (The following tools for R32 are required.) : R32 tools available : Partly unavailable, : R32 tools unavailable Installation/service tools Applicability to R32 air Applicability to R22 air conditioner or not conditioner or not Tools / Equipment specification 1 Flare tool...

  • Page 17: Specifications

    1. SPECIFICATIONS 1-1. Outdoor Unit <Digital Inverter> Model name Outdoor unit RAV-302ATP-E RAV-402ATP-E 1 phase 220-240V, 50Hz Power supply 1 phase 220V, 60Hz Type Rotary DC Invertor Compressor Motor (kW) 0.75 Pole Refrigerant charged (kg) 0.63 0.90 Refrigerant control Pulse motor valve Standard length Min.

  • Page 18: Operation Characteristic Curve

    1-2. Operation Characteristic Curve RAV-GM302ATP-E <Cooling> < > Conditions Conditions Indoor : DB 27 C/WB 19 Indoor : DB 20 Outdoor : DB 35 Outdoor : DB 7 C/WB 6 Air Flow : High Air Flow : High Pip Length : 7.5m Pip Length : 7.5m...
  • Page 19 Operation Characteristic Curve RAV-GM402ATP-E <Cooling> <Heating> 10.00 10.00 9.00 9.00 8.00 8.00 7.00 7.00 6.00 6.00 5.00 5.00 4.00 4.00 3.00 3.00 2.00 2.00 1.00 1.00 0.00 0.00 90 100 110 120 90 100 110 120 Compressor Speed (RPS) Compressor Speed (RPS) Capacity variation ratio according to temperature <Cooling>...

  • Page 20: Construction Views (External Views)

    2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) - 20 -...

  • Page 21: Systematic Refrigerating Cycle Diagram

    3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM 3-1. Outdoor Unit RAV-GM302ATP-E Temp. measurement INDOOR UNIT Indoor heat exchanger Cross flow fan Max. : 20m Min. : 2m Pressure measurement Chargeless : 15m Deoxidized copper pipe Gauge attaching port Outer dia. : 6.35mm...
  • Page 22 RAV-GM402ATP-E T1 Temp. measurement INDOOR UNIT Indoor heat exchanger Cross flow fan Max. Min. : 2m Chargeless : 15m Pressure measurement Deoxidized copper pipe Charge : 20g/m Gauge attaching port Outer dia. : 6.35mm (16 to 20m) Vacuum pump connecting port Thickness : 0.8mm Sectional shape Deoxidized copper pipe...

  • Page 23: Operation Data

    3-2. Operation Data RAV-GM302ATP-E <Cooling> Tempeature Heat exchanger pipe Standard Indoor Outdoor Compressor condition(°C) temp. pressure fan mode fan mode revolution Indoor Outdoor TE (°C) P (MPa) TC (°C) TS (°C) (rps) 27/19 35/- 37 to 41 0.9 to 1.1...

  • Page 24: Wiring Diagram

    4. WIRING DIAGRAM - 24 -...

  • Page 25: Specifications Of Electrical Parts

    5. SPECIFICATIONS OF ELECTRICAL PARTS RAV-GM302ATP-E Parts name Type Specifications Compressor KSK89D53UFZ 3 phase, 6P, 715W Fan motor WDF-340-A43-1 Output 43 W 4-way valve coil SQ-A2522G-00352 PMV coil PQ-M10012-000313 High-pressure SW ACB-4UB83W OFF : 4.15MPa Reactor CH-69-Z-T 19mH, 10A P.C. board WP-030 Fuse (Mounted on P.C.

  • Page 26: Refrigerant R32

    6. REFRIGERANT R32 This air conditioner adopted the R32 refrigerant 6. When an air conditioning system charged with a 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 refrigerant R32 even when refrigerant leaks, its concentration is 1.6 times higher than conventional refrigerant...
  • Page 27 Table 6-2-1 Thicknesses of annealed copper pipes Thickness (mm) Nominal diameter Outer diameter (mm) 12.7 15.9 1. Joints For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants. a) Flare Joints Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds 20 mm.
  • Page 28 c) Insertion of Flare Nut d) Flare Processing Make certain that a clamp bar and copper pipe have been cleaned. By means of the clamp bar, perform the flare processing correctly. Use either a flare tool for R410A/R32 or conventional flare tool. ØD Flare processing dimensions differ according to the type of flare tool.
  • Page 29 Fig. 6-2-2 Relations between flare nut and flare seal surface 2. Flare Connecting Procedures and Precautions a) Make sure that the flare and union portions do not have any scar or dust, etc. b) Correctly align the processed flare surface with the union axis. c) Tighten the flare with designated torque by means of a torque wrench.

  • Page 30: Tools

    6-3. Tools 6-3-1.Required Tools Refer to the “4. Tools” (Page 16) 6-4. Recharging of Refrigerant When it is necessary to recharge refrigerant, charge the specified amount of refrigerant according to the following steps. Recover the refrigerant, and check no refrigerant remains in the equipment.

  • Page 31: Brazing Of Pipes

    6-5. Brazing of Pipes 6-5-1. Materials for Brazing 3. Types of flux • Noncorrosive flux 1. Silver brazing filler Generally, it is a compound of borax and boric Silver brazing filler is an alloy mainly composed acid. of silver and copper. It is used to join iron, copper It is effective in case where the brazing tem- or copper alloy, and is relatively expensive though perature is higher than 800°C.
  • Page 32 6-5-3. Brazing As brazing work requires sophisticated techniques, experiences based upon a theoretical knowledge, it must be performed by a person qualified. Flow meter In order to prevent the oxide film from occurring in the pipe interior during brazing, it is effective to Stop valve proceed with brazing while letting dry Nitrogen gas (N2) flow.

  • Page 33: Instructions For Re-Use Piping Of R410A Or R22

    6-6. Instructions for Re-use Piping of R410A or R22 Instruction of Works: 5. When a commercially available dryer is attached to The existing R22 and R410A piping can the existing pipes. be reused for our super digital inverter There is the possibility that copper green rust has been R32 products installations.
  • Page 34 Placement Term Curing manner location 1 month or more Pinching Outdoors Less than Pinching or 1 month Taping Indoors Every time 6-6-4. Final Installation Checks Existing pipes: Cannot be used. Are there scratches or dents on the existing pipes? • Use new pipes. Is it possible to operate the existing air conditioner? •...
  • Page 35 6-6-5. Handling of Existing Pipe Piping necessary to change the flare nut/ machining size due to pipe compression. When using the existing pipe, carefully check it for the following: 1) Flare nut width: H (mm) Wall thickness (within the specified range) Copper pipe Ø6.4 Ø9.5...

  • Page 36: Replenishing Refrigerant

    6-7. Replenishing refrigerant In order to assure the reliability of the appliance, the amount of refrigerant to be replenished shall be subject to the following restrictions. Follow the margin of excess replenished refrigerant, which is equivalent to the current R22. Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which may result in failure, explosion of the product, or personal injury.

  • Page 37: General Safety Precautions For Using R32 Refrigerant

    6-8. General safety precautions for using R32 refrigerant 6-8-1. Recovery 6-8-2. Decommissioning ・ When removing refrigerant from a system, either ・Before carrying out this procedure, it is essential that for servicing or decommissioning,　it is recommended the technician is completely familiar with the good practice that all refrigerants are removed safely.
  • Page 38 6-8-3. Pump down process 1. Turn off the Air Conditioner system. 2. Connect the charge hose from the manifold valve to the service port of the packed valve at gas side. 3. Turn on the Air Conditioner system in cooling operation more than 10 minutes.

  • Page 39: Outdoor Control Circuit

    7. OUTDOOR CONTROL CIRCUIT 7-1. Outline of Main Controls 1. Pulse Modulating Valve (PMV) control 1) For PMV 50 to 500 pulses during operation. 2) In cooling operation, PMV is controlled with the temperature difference between TS sensor and TC sensor.
  • Page 40 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 processed by the indoor unit (for GM30) indoor unit, the controller of outdoor unit controls fan speed.
  • Page 41 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 (for GM40) processed by the indoor unit indoor unit, the controller of outdoor unit controls fan speed.
  • Page 42 Item Operation flow and applicable data, etc. Description 4. Capacity The cooling or heating capacity depending on the load is 1) The difference between set control adjusted. temperature on remote controller (Ts) and room temperature (Ta) According to difference between the setup value of tempera- is calculated.
  • Page 43 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 the compressor speed is re- In cooling/dry operation, the sensor of indoor heat indoor heat duced.
  • Page 44 Item Operation flow and applicable data, etc. Description 7. Defrost control (This function removes frost adhered to the outdoor The necessity of defrost operation is (Only in heating heat exchanger.) detected by the outdoor heat exchanger operation) temperature. The conditions to detect the The temperature sensor of the outdoor heat ex- necessity of defrost operation differ in A, changer (Te sensor) judges the frosting status of the...

  • Page 45: Outdoor Print Circuit Board

    7-2. Outdoor Print Circuit Board - 45 -...

  • Page 46: Troubleshooting

    8. TROUBLESHOOTING 8-1. Summary of Troubleshooting <Wired remote controller type> 1. Before troubleshooting 1) Required tools/instruments • ⊕ and ⊖ screwdrivers, spanners, radio cutting pliers, nippers, push pins for reset switch • Tester, thermometer, pressure gauge, etc. 2) Confirmation the following points before check a) The following operations are normal.
  • Page 47 <Wireless remote controller type> 1. Before troubleshooting 1) Required tools/instruments • ⊕ and ⊖ screwdrivers, spanners, radio cutting pliers, nippers, etc. • Tester, thermometer, pressure gauge, etc. 2) Confirmation the following points before check a) The following operations are normal. 1.

  • Page 48: Troubleshooting

    8-2. Troubleshooting 8-2-1. Outline of judgment The following method can be done to check whether the problem occurred in indoor or outdoor unit. The error is indicated by indication lamp on the display of the indoor unit. (sensors of the receiving part) The indoor unit monitors the operating status of the air conditioner, and the blocked contents of self-diagnosis are displayed restricted to the following cases if a protective circuit works.
  • Page 49 Lamp indication Check code Cause of trouble occurrence Operation Timer Ready Heat exchanger sensor (TCJ) error ⎫ ⎪ ⎬ Heat exchanger sensor (TC) error Indoor unit sensor error ⎪ ⎭ Heat exchanger sensor (TA) error Alternate flash Discharge temp. sensor (TD) error ⎫...
  • Page 50 8-2-3. Monitoring function of wired remote controller <RBC-AMT > TEMP. ON / OFF TIMER SET MODE TIME SAVE VENT FILTER RESET TEST SWING/FIX UNIT LOUVER Content Enter the service monitoring mode using the remote controller to check the sensor temperature or operation status of the remote controller, indoor unit, and outdoor unit.
  • Page 51 CODE No. Data name Unit CODE No. Data name Unit Room temperature °C Outdoor heat exchanger (Coil) temperature (TE) °C (Remote controller) Outside temperature (TO) °C Indoor suction temperature (TA) °C Compressor discharge temperature (TD) °C Indoor heat exchanger (Coil) °C Compressor suction temperature (TS) °C...
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  • Page 53 - 53 -...
  • Page 54 Error mode detected by indoor unit Operation of diagnostic function Judgment and measures Check Status of Cause of errors Condition code air conditioner 1. Check cables of remote controller and communication adapters. No communication from remote Stop Displayed when Remote controller LCD display OFF (Disconnection) controller (including wireless) and (Automatically error is detected...
  • Page 55 Error mode detected by outdoor unit Operation of diagnostic function Check code Status of Judgment and measures Cause of errors Condition air conditioner Indoor unit 1. Check discharge temp. sensor (TD). Disconnection, short of discharge Displayed when Stop temp. sensor (TD) error is detected 2.
  • Page 56 Operation of diagnostic function Check code Status of Judgment and measures Cause of errors Condition air conditioner Indoor unit Displayed when 1. Check outdoor P.C. board. Current detection circuit error Stop error is detected (AC current detection circuit) Discharge temp. error 1.
  • Page 57 Error mode detected by remote controller or central controller (TCC-LINK) Operation of diagnostic function Judgment and measures Status of Cause of errors Check code Condition air conditioner Power supply error of remote controller, Indoor EEPROM error 1. Check remote controller inter-unit wiring. No communication with master indoor unit 2.
  • Page 58 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [E04] — [Indoor / Outdoor communication error] Is setting of group address Check item code [14]. on the remote controller correct? Are inner wiring of the indoor unit Correct wiring and inter-unit wires (1, 2, 3) correct? and inter-unit wires.
  • Page 59 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) — [F08] [Outside air temp. sensor (TO) error] Correct connector. Is CN63 connection correct? Is resistance value of TO sensor correct? Sensor error → Replace Check outdoor P.C.
  • Page 60 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) — [F31] [EEPROM error] Check outdoor P.C. board. Defect → Replace [H01] [Compressor break down] — Is power supply voltage correct? Correct power supply line. 50 Hz : AC 198 to 264 V 60 Hz : AC 198 to 242 V Is wire connection correct?
  • Page 61 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) — [H03] [Current detection circuit error] Check outdoor P.C. board. Defect → Replace — [L10] [Unset model type] : Only when service P.C. board is used Cut jumper line according to the explanation sheet packaged with the service P.C.
  • Page 62 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P04] [High pressure SW system error] Wiring check, Does high pressure switch operate? Is circuit wiring correct? Correct. Are parts of Parts check high pressure switch correct? Defective →...
  • Page 63 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) — [P05] [Power supply error] Is the power supply voltage is lower than or over the range? Confirm power supply, etc. 50 Hz : AC 198 to 264 V 60 Hz : AC 198 to 242 V Check outdoor P.C.
  • Page 64 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P15] [Gas leak detection] — Is there gas leak? Repair defective position. Is there refrigerant shortage? Recharge refrigerant. Correct defective position. Is PMV under correct condition? Replace defective part.
  • Page 65 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P20] [High pressure protective operation] — Is service valve fully opened? Open service valve fully. Reset the power supply and then make a test run Cooling season matching to the season.
  • Page 66 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P22] — [Fan system error] Is the power supply voltage is lower than or over the range? Check wiring construction. 50 Hz : AC 198 to 264 V Ask to repair the power supply.
  • Page 67 8-2-5. Diagnostic Procedure for Each Check Code (Outdoor Unit) Temperature sensor Temperature – Resistance value characteristic table TA, TC, TCJ, TE, TS, TO sensors TD sensors Representative value Representative value Resistance value (kΩ Ω Ω Ω Ω ) Resistance value (kΩ Ω Ω Ω Ω ) Temperature Temperature (°C)
  • Page 68 8-3. Table Inspection of outdoor unit main parts Parts name Checking procedure Compressor Measure the resistance value of each winding by using the tester. (Model : KSK89D53UFZ) Position Resistance value Red – White 2.35±7% Ω White – Black White Black Black –...

  • Page 69: Setup At Local Site And Others

    9. SETUP AT LOCAL SITE AND OTHERS 9-1. Troubleshooting based on information displayed on remote controller <RBC-AMT > (1) Checking and testing When a trouble occurs to an air conditioner, a check code and indoor unit No. are displayed on the display window of the remote controller.
  • Page 70 <RBC-ASCU11- > (1) Confirmation and check If a problem occurs with the air conditioner, the OFF timer indicator alternately shows the check code and the indoor Unit No. in which the problem occurred. Check code The indoor Unit No. in which the problem occurred.

  • Page 71: Group Control Operation

    9-2. Group Control Operation In a group control, operation of maximum 8 indoor units can be controlled by a remote controller. The indoor unit connected with outdoor unit (Individual/Master of twin) controls room temperature according to setting on the remote controller. <System example>...
  • Page 72 Indoor unit power-ON sequence Power ON • The unit without power feed waits entirely → Waiting status is released by system start • Reboot when power is fed on the way <By feed unit> <Automatic address judgment> Gr construction check 3 minutes elapse Normal ∗...

  • Page 73: Refrigerant Leak Detection Function

    9-3. Refrigerant leak detection function Monitors the amount of refrigerant being calculated base on the temperature sensors, PMV opening during test run operation, and detects any refrigerant leaks during operation and indicates it using the LEDs on the outdoor unit or remote controller. Refrigerant leak detection is not performed in usual operation.
  • Page 74 [Confirmation method with remote controller] You can use "Monitor function" on the remote controller to check the progress of the judgment or the result of the judgment. Please refer to the instruction manual of the remote controller or indoor unit for the confirmation method.

  • Page 75: Address Setup

    10. ADDRESS SETUP 10-1. Address Setup Procedure When an outdoor unit and an indoor unit are connected, or when an outdoor unit is connected to each indoor unit respectively in the group operation even if multiple refrigerant lines are provided, the automatic address setup completes with power-ON of the outdoor unit.

  • Page 76: Address Setup & Group Control

    10-2. Address Setup & Group Control <Terminology> Indoor unit No. : N - n = Outdoor unit line address N (Max. 30) - Indoor unit address n (Max. 64) Group address : 0 = Single (Not group control) 1 = Master unit in group control 2 = Sub unit in group control Master unit (= 1) : The representative of multiple indoor units in group operation sends/receives signals to/from the remote controllers and sub indoor units.
  • Page 77 10-2-2. Automatic Address Example from Unset Address (No miswiring) 1. Standard (One outdoor unit) 1) Single (Master/Sub) Individual 2) Group operation (Multiple outdoor units = Miltiple indoor units only with serial communication) Sub/Header Sub/Header Sub/Follower Master/Header Sub/Follower Only turning on source power supply (Automatic completion) Header unit: The header unit receives the indoor unit data (thermo status) of the follower •...
  • Page 78 10-2-3. Automatic Address Example from Unset Address (No miswiring) 1. Standard (One outdoor unit) 1) Single Individual (Master/Header) Only turning on source power supply (Automatic completion) 2. Group operation (Multiple outdoor units = Multiple indoor units with serial communication only, without twin) Sub/Header Sub/Header Master/Header...

  • Page 79: Remote Controller Wiring

    10-3. Remote Controller Wiring Strip off approx. 9 mm the wire to be connected. Wiring diagram • For single system, use non polarity, 2 core wire is • used for wiring of the remote controller. Terminal block for remote controller Terminal block (0.5 mm²...

  • Page 80: Manual Address Setting Using The Remote Controller

    10-5. Manual address setting using the remote controller Procedure when setting indoor units’ addresses first under the condition that indoor wiring has been completed and outdoor wiring has not been started (manual setting using the remote controller) Wiring example of 2 refrigerant lines Refrigerant line 1 Refrigerant line 2 Outdoor...
  • Page 81 <Indoor unit address> 13 13 13 13 13 Push the TEMP. buttons repeatedly to set the CODE No. to Push the TIME buttons repeatedly to set an indoor unit address. Push the button. (It is OK if the display turns on.) <Group address>...
  • Page 82 Confirming the indoor unit addresses and the position of an indoor unit using the remote controller Confirming the numbers and positions of indoor units To know the indoor unit addresses though position of the indoor unit is recognized When the unit is individual (the indoor unit is paired with a wired remote controller one-to-one), or it is a group-controlled one.
  • Page 83 To find an indoor unit’s position from its address When checking unit numbers controlled as a group <RBC-AMT > TEMP. ON / OFF TIMER SET MODE TIME SAVE VENT Stop FILTER RESET TEST SWING/FIX UNIT LOUVER (Execute it while the units are stopped.) The indoor unit numbers in a group are indicated one after another.
  • Page 84 <Maintenance/Check list> Aiming in environmental preservation, it is strictly recommended to clean and maintain the indoor/outdoor units of the operating air conditioning system regularly to secure effective operation of the air conditioner. It is also recommended to maintain the units once a year regularly when operating the air conditioner for a long time.

  • Page 85: How To Exchange Compressor

    11. HOW TO EXCHANGE COMPRESSOR 11-1. Exchanging Procedure of Compressor (Outline) START Open PMV forcedly and then recover refrigerant Has refrigerant recovery work been done? using a refrigerant recovery unit. Turn off the leakage breaker. Never recover the refrigerant to the outdoor unit. For the refrigerant recovery work during reinstallation Remove the defective compressor.

  • Page 86: Detachments

    12. DETACHMENTS Part name Procedure Remarks Common procedure CAUTION Never forget to put on the gloves at working Valve cover time, otherwise an injury will be caused by the parts, etc. 1. Detachment Stop operation of the air conditioner, and turn off the main switch of the breaker for air conditioner.
  • Page 87 Part name Procedure Remarks 1. How to remove Front cabinet 1) Perform 1 of 1. Motor base 2) Remove the screw between front cabinet and side cabinet (right). (ST1T Ø4 × 10 , 1 pc.) 3) Remove the screw between front cabinet and inverter.
  • Page 88 Part name Procedure Remarks 1. Detachment Screws Inverter assembly 1) Perform work of item 1 of 2) Take off screws of the upper part of the front cabinet. (ST1T Ø4 ×10L, 2 pcs.) • If removing the inverter cover under this condition, P .C.
  • Page 89 Part name Procedure Remarks Connector Inverter assembly Connection to compressor (3P：Relay connector white） ※ (Warning 1) Reactor (2P：Relay connector white) CN31･･･ Outdoor fan (3P：white) Inverter assembly CN72･･･ 4 directional valve (3P：yellow) CN73･･･ PMV coil (6P：white) CN62･･･ TD sensor (3P：white) CN64･･･ TS sensor (3P：white) CN61･･･...
  • Page 90 Part name Procedure Remarks 1) Take off 1 screws (ST1T Ø4 × 10L) that Control P.C. fixed between ASM-COV-WIRING and board inverter box. then disengage ASM-COV- assembly WIRING from inverter box. 2) Remove P.C.board base’s hook (Hook 1, 2, 3, 4), hold P.C.board base, pull inverter box up.Remove lead wire ・...
  • Page 91 Part name Procedure Remarks Rear cabinet 1) Perform works of items 1 of 1 and 2 , 3 . 2) Take off fixed screws for the bottom plate. (ST1T Ø4 × 10L, 2 pcs.) 3) Take off fixed screw for the valve mounting plate.
  • Page 92 Part name Procedure Remarks Compressor 1) Perform works of items 1 of 1 and 2 , Partition plate 2) Discharge refrigerant gas. 3) Remove the partition plate. (ST1T Ø4 × 10L, 3 pcs.) 4) Remove the terminal covers of the compressor, and disconnect lead wires of the compressor and the compressor thermo assembly from the terminal.
  • Page 93 Part name Procedure Remarks 1. Detachment Pulse Motor Valve (PMV) coil 1) Perform works of items Attachment state 2) Release the coil from the concavity by turning it, and remove coil from the PMV. 2. Attachment 1) Put the coil deep into the bottom position. 2) Fix the coil firmly by turning it to the concavity.

  • Page 94: Exploded Views And Parts List

    13. EXPLODED VIEWS AND PARTS LIST 13-1. Outdoor Unit RAV-GM302ATP-E - 94 -...
  • Page 95 Model name Location Part No. Description RAV-GM302ATP-E 43T42387 BASE COATING ASSEMBLY 43T00653 ASM-COAT-P-F-PV 43T00742 PARTITION ASSEMBLY 43T00605 ASM-CABI-F-S 43T00743 RIGHT CABINET ASSEMBLY 43T00602 ASM-COAT-C-S-L 43T19352 ASM-COVER-PV 43T00604 ASM-COAT-CABI-U 43T39348 ASM-M-BASE 43T41521 COMPRESSOR 43T46367 4 WAY VALVE 43T63327 COIL-4WAY 43T46469 BODY PMV...
  • Page 96 RAV-GM402ATP-E - 96 -...
  • Page 97 Model name Location Part No. Description RAV-GM402ATP-E 43T42387 BASE COATING ASSEMBLY 43T00653 ASM-COAT-P-F-PV 43T00742 PARTITION ASSEMBLY 43T00605 ASM-CABI-F-S 43T00743 RIGHT CABINET ASSEMBLY 43T00602 ASM-COAT-C-S-L 43T19352 ASM-COVER-PV 43T00604 ASM-COAT-CABI-U 43T39348 ASM-M-BASE 43T41522 COMPRESSOR 43T46367 4 WAY VALVE 43T63327 COIL-4WAY 43T46469 BODY PMV 43T63360 COIL PMV 43T46435...
  • Page 98 < Inverter assembly > TE Sensor TS Sensor TD Sensor TO Sensor TL Sensor Model name Location Part No. Description RAV-GM302ATP-E RAV-GM402ATP-E 43T62351 HEATSINK 43TN9670 PC BOARD ASSY (WP-030) 43TN9671 PC BOARD ASSY (WP-030) 43T60384 TERMINAL-6P 43T50369 TEMPERATURE SENSOR 43T50412...
  • Page 99 WARNINGS ON REFRIGERANT LEAKAGE Check of Concentration Limit The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its concentration will not exceed a set limit. The refrigerant R32 which is used in the air conditioner is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws to be imposed which protect the ozone layer.
  • Page 100 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.

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