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Toshiba RAV-GM901KRTP Series Service Manual
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Toshiba RAV-GM901KRTP Series Service Manual

Toshiba RAV-GM901KRTP Series Service Manual

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FILE NO. SVM-20042
SERVICE MANUAL
AIR-CONDITIONER
SPLIT TYPE
INDOOR UNIT
High Wall Type
RAV-GM901KRTP Series
R32
March, 2020

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Summary of Contents for Toshiba RAV-GM901KRTP Series

  • Page 1 FILE NO. SVM-20042 SERVICE MANUAL AIR-CONDITIONER SPLIT TYPE INDOOR UNIT High Wall Type RAV-GM901KRTP Series March, 2020...

  • Page 2: Table Of Contents

    Adoption of New Refrigerant This Air Conditioner is a new type which adopts a new refrigerant R32 instead of the conventional refrigerant R22 in order to prevent destruction of the ozone layer. CONTENTS SAFETY CAUTION .................... 4 1. SPECIFICATIONS ..................13 2.
  • Page 3 11. ADDRESS SETUP ..................82 11- 1. Address Setup Procedure ..................... 82 11- 2. Address Setup & Group/Twin/Triple Control ............... 83 11- 3. Address Setting ......................85 12. HOW TO REPLACE THE MAIN PARTS ..........87 13. EXPLODED VIEWS AND PARTS LIST ............ 94 14.

  • Page 4: Safety Caution

    Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work.
  • Page 5 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 6 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. Warning indication Description WARNING WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL SHOCK HAZARD...
  • Page 7 Precautions for safety The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual. DANGER Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breaker for both the indoor and outdoor units to the OFF position.
  • Page 8 WARNING Before starting to repair the air conditioner, read carefully through the Service Manual, and repair the air conditioner by following its instructions. Only qualified service person (*1) is allowed to repair the air conditioner. Repair of the air conditioner by unqualified person may give rise to a fire, electric shocks, injury, water leaks and/or other problems.
  • Page 9 Before troubleshooting or repair work, check the earth wire is connected to the earth terminals of the main unit, otherwise an electric shock is caused when a leak occurs.If the earth wire is not correctly connected, contact an electric engineer for rework. After completing the repair or relocation work, check that the ground wires are connected properly.
  • Page 10 After repair work, surely assemble the disassembled parts, and connect and lead the removed wires as before. Perform the work so that the cabinet or panel does not catch the inner wires. If incorrect assembly or incorrect wire connection was done, a disaster such as a leak or fire is caused at user’s Assembly / side.
  • Page 11 When the service panel of the outdoor unit is to be opened in order for the compressor or the area around this part to be repaired immediately after the air conditioner has been shut down, set the circuit breaker to the OFF position, and then wait at least 10 minutes before opening the service panel.
  • Page 12 Declaration of Conformity Manufacturer: TOSHIBA CARRIER (THAILAND) CO., LTD. 144/9 Moo 5, Bangkadi Industrial Park, Tivanon Road, Amphur Muang, Pathumthani 12000, Thailand TOSHIBA CARRIER EUROPE S.A.S. TCF holder : Route de Thil 01120 Montluel FRANCE Hereby declares that the machinery described below:...

  • Page 13: Specifications

    1. SPECIFICATIONS Indoor unit RAV-GM 901KRTP-E(TR) Model Outdoor unit RAV-GM 901ATP-E(TR) Cooling Capacity (kW) Heating Capacity (kW) 1 phase 230V (220-240V) 50Hz Power Supply Running current 12.63-11.58 Power consumption (kW) 2.667 Power factor Cooling 3.00 Energy efficiency class ※ Energy rating　 ※※...

  • Page 14: Construction Views (External Views)

    2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) 1050 Air Inlet Air Filter Front Panel Grille Inlet Heat Exchanger Air Outlet Knock Out System Knock Out System Wireless remote controller 50 71.5 71.5 Installation plate hanger 17.5 Remote controller holder Drain hose (0.4m) Installation plate hanger Installation plate hanger Connecting pipe (0.49m)

  • Page 15: Systematic Refrigerating Cycle Diagram

    3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM High Wall Type • Single type (Combination of 1 indoor unit and 1 outdoor unit) (Indoor unit) Distributor (Strainer incorporated) TCJ sensor Air heat exchanger TC sensor Heating Cooling Refrigerant pipe Refrigerant pipe at liquid side at gas side (Outer dia : ØB) (Outer dia : ØA)

  • Page 16: Wiring Diagram

    4. WIRING DIAGRAM - 16 -...

  • Page 17: Specifications Of Electrical Parts

    5. SPECIFICATIONS OF ELECTRICAL PARTS Parts Name Type Specications Fan motor (for indoor) Output (Rated) 30W, 340V DC ICF-340-30-6 4 phase, DC 12V Grille motor 24BYJ48A-080 Thermo. Sensor (TA sensor) 418mm 10kΩ at 25°C Heat exchanger sensor (TC sensor) Ø6, 800mm 10kΩ...

  • Page 18: Refrigerant R32

    6. REFRIGERANT R32 3. If a refrigeration gas leakage occurs during This air conditioner adopts the new refrigerant HFC (R32) which does not damage the ozone layer. installation/servicing, be sure to ventilate fully. If the refrigerant gas comes into contact with fire, a The next section describes the precautions for air conditioner using the new refrigerant.
  • Page 19 Table 6-2-1 Thicknesses of annealed copper pipes Thickness (mm) Nominal diameter Outer diameter (mm) 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 20 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 R32 or conven- tional flare tool. Flare processing dimensions differ according to the type of flare tool.
  • Page 21 Table 6-2-6 Flare and flare nut dimensions for R22 Dimension (mm) Nominal Outer diameter Thickness Flare nut width diameter (mm) (mm) (mm) 6.35 9.52 13.0 13.5 12.70 16.2 16.0 12.9 15.88 19.7 19.0 16.0 19.05 23.3 24.0 19.2 Fig. 6-2-2 Relations between flare nut and flare seal surface 2.

  • Page 22: Tools

    6-3. Tools 6-3-1. Required Tools The service port diameter of packed valve of the outdoor unit in the air-water heat pump using R32 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 23: Recharging Of Refrigerant

    6-4. Recharging of Refrigerant When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the following steps. Recover the refrigerant, and check no refrigerant remains in the equipment. When the compound gauge’s pointer has indicated –0.1 Mpa (–76 cmHg), place the handle Low in the fully closed position, and turn off the vacuum pump’s power switch.

  • Page 24: Brazing Of Pipes

    1. Be sure to make setting so that liquid can be charged. 2. When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down. 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 25 6-5-3. Brazing 2. Characteristics required for flux • 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 26: Indoor Control Circuit

    7. INDOOR UNIT CONTROL 7-1. Indoor Controller block diagram 7-1-1. Connection of wired remote controller Wired (Simple) header remote controller (wired) Central remote controller Display Display LCD Function setup LCD driver Display LED Key switch Function setup Key switch DC5V Remote controller Power circuit DC5V...
  • Page 27 7-1-2. Connection of Wireless Remote Controller Central control remote controller (Sold separately) Follower unit Indoor unit #1 Header unit Indoor control P.C. board (MCC-1696) Central control communication circuit DC20V Remote controller communication circuit DC12V EEPROM Receiver and Display P.C. board DC5V TA sensor (WP-033)

  • Page 28: Control Specifications

    7-2. Control Specifications (High Wall Type) Item Outline of specifications Remarks When power 1) Distinction of outdoor unit supply is reset When the power supply is reset, the outdoors are distin- guished and the control is selected according to the distinguished result.
  • Page 29 Item Outline of specifications Remarks Room temp. 2) Using the CODE No. 06, the setup temperature in heating Shift of suction control operation can be corrected. temperature in heating (Continued) operation SET DATA Setup temp. 0°C 1°C 2°C 3°C 4°C 5°C correction Setting at shipment...
  • Page 30 Item Outline of specifications Remarks Fan speed control 1) Operation with (HH), (H), (L) or [AUTO] mode is carried HH > H+ > H > L+ > L > out by the command from the remote controller. 2) When the fan speed mode [AUTO] is selected, the fan speed varies by the difference between Ta and Ts.
  • Page 31 Item Outline of specifications Remarks Fan speed [rpm] Fan speed control (Continued) GM901 COOL HEAT 1180 1180 1020 “PRE-HEAT ” 3) When thermo sensor turns OFF during heating, the fan indication speed mode becomes UL ( weak). 4) When Ta is 25°C or above at the beginning of HEAT operation or when canceling defrost mode, H or HH mode continues for 1 minute from the time when Tc enters zone E.
  • Page 32 Item Outline of specifications Remarks Freeze preventive control The cooling operation (including Dry operation) is Tcj: (Low temperature release) performed as follows based on the detected Indoor heat exchanger temperature of Tc sensor or Tcj sensor. sensor temperature When [J] zone is detected for 6 minutes (Following figure), the commanded frequency is decreased from the real operation frequency.
  • Page 33 Item Outline of specifications Remarks After-heat When heating operation stops, in some cases, the indoor fan elimination operates with (L) for approx. 30 seconds. Louver 1) During the first operation after power on, louver position is Louver angle: 0° control controlled automatically according to operation mode ( full close ) (COOL/HEAT).
  • Page 34 Item Outline of specifications Remarks Frequency fixed <In case of wireless remote controller> operation (Test run) 1) Push [ON/OFF] button. 2) Using [SELECT] MODE button, set [COOL] or [HEAT] to the operation mode to drive the air conditioner. 3) Set [HIGH ] to the fan speed.
  • Page 35 Item Outline of specifications Remarks Power-saving 1) Power-saving opration is available in the AUTO mode. control 2) The set temperature is corrected using various sensor data within the range where comfort is maintained. 3) By using various sensor data including room temp. Ta, outside air temp.
  • Page 36 Item Outline of specifications Remarks Self-clean operation 1) When cooling operation mode (AUTO COOL, COOL, DRY) stopped, the following (Dry operation) three self-clean operations are performed. Compressor Self-clean Louver ON period operation period 0 to 10 min. None 10 to 60 min. 1 hour 450 rpm Position of 15°...
  • Page 37 Item Outline of specifications Remarks 8°C 1) This function is intended for the cold latitudes and performs heating/ objective heating operation 8°C heating operation). Frost protective 2) This function is valid only for combination with the outdoor units. In a group connection, operation if there is even one 3) Using the indoor CODE No.
  • Page 38 Item Outline of specifications Remarks COMFORT SLEEP When you push the COMFORT SLEEP button during • [ ] display operation cooling, heating or AUTO, the air conditioner will start the (Wireless remote following operation. controller specific The fan speed display will indicate AUTO and low speed will operations) be used.
  • Page 39 Item Outline of specifications Remarks PRESET operation Start the air conditioner in the operation mode which you want the • [ ] display (Wireless remote remote controller to memorize. controller specific 1) Push and hold the PRESET button for more than 3 seconds operations) while the display flashes.

  • Page 40: Indoor Print Circuit Board (High Wall Type)

    7-3. Indoor Print Circuit Board (High Wall Type) <MCC-1696> Operation Power LED D501 Option output Louver CN309, AC200-240V CN33, DC12V Inter-unit wire DC fan input / output CN67, AC200-240V CN210, DC310V Option output CN60, DC12V Fan drive CN32, DC12V CN61, DC12V Remote controller Inter-unit wire Power LED...
  • Page 41 High Wall Type P.C. board optional switch/Connector specifications Connector Function Specifications Remarks Terminator resistor OFF: No terminator resistor, Setup at shipment OFF: No terminator resistor. Bit 1 provided/Not provided ON: Terminator resistor provided Only 1 unit is ON during central control by custom only. SW01 OFF: Remote controller A Remote controller A/B...

  • Page 42: Troubleshooting

    8. TROUBLESHOOTING 8-1. Summary of Troubleshooting <Wired remote controller type> 1. Before troubleshooting 1) Required tools/instruments • screwdrivers, spanners, radio cutting pliers, nippers, push pins for reset switch – • Tester, thermometer, pressure gauge, etc. 2) Confirmation points before check a) The following operations are normal.
  • Page 43 <Wireless remote controller type> 1. Before troubleshooting 1) Required tools/instruments • screwdrivers, spanners, radio cutting pliers, nippers, etc. – • Tester, thermometer, pressure gauge, etc. 2) Confirmation points before check a) The following operations are normal. 1. Compressor does not operate. •...

  • Page 44: Troubleshooting

    8-2. Troubleshooting (High Wall Type) 8-2-1. Outline of judgment The primary judgment to check whether a trouble occurred in the indoor unit or outdoor unit is carried out with the following method. Method to judge the erroneous position by flashing indication on the display part of the indoor unit 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 45 Lamp indication Check code Cause of trouble occurrence Ready Timer Operation ⎫ 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 46 8-2-2. Others (Other than Check Code) Lamp indication Check code Cause of trouble occurrence Ready Timer Operation — During test run Simultaneous flash Ready Timer Operation Disagreement of cool/heat — (Automatic cool/heat setting to automatic cool/heat prohibited model, or setting of heating to cooling-only model) Alternate flash - 46 -...
  • Page 47 - 47 -...
  • Page 48 Error mode detected by indoor unit Operation of diagnostic function Judgment and measures Check Status of Cause of operation Condition code air conditioner 1. Check cables of remote controller and communication adapters. No communication from remote Stop Displayed when controller (including wireless) and •...
  • Page 49 Error mode detected by remote controller or central controller (TCC-LINK) Operation of diagnostic function Judgment and measures Status of Check code Cause of operation 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 50 Error mode detected by outdoor unit Operation of diagnostic function Check code Judgment and measures Status of Indoor unit Cause of operation Condition air conditioner High Wall 1. Check discharge temp. sensor (TD). Disconnection, short of discharge Displayed when Stop temp.
  • Page 51 Operation of diagnostic function Check code Judgment and measures Status of Indoor unit Cause of operation Condition air conditioner High Wall Discharge temp. error 1. Check refrigerating cycle (Gas leak). Displayed when ∗ Discharge temp. (TD) over Stop 2. Trouble of electronic expansion valve. error is detected specified value was detected.
  • Page 52 8-2-4. Diagnostic Procedure for Each Check Code (Indoor Unit) Check code [E01 error] Correct inter-unit cable of remote controller Is inter-unit cable of A and B normal? Is there no disconnection or Correct connection of connector. contact error of connector on harness Check circuit wiring.
  • Page 53 [E04 error] Does outdoor unit work? Is group address set correctly? Check CODE No. “14”. Are L1/L2/S wires normal? Correct wires. Are connectors from indoor unit Correct connector connection. and outdoor unit connected normally? Is indoor unit switch SW02 setting correct? Correct switch setting on Bit 1: OFF MCC-1696 P.C.
  • Page 54 [E18 error] Are wired remote controller Correct inter-unit cable of remote controller. inter-unit cable of A and B normal? Is there no disconnection or Correct connection of connector. contact error of connector on harness Check circuit wiring. from terminal block of indoor unit? Is indoor unit switch SW02 setting corrent? Correct switch setting on Bit 1: OFF...
  • Page 55 [E09 error] Are 2 headers set by Correct one header/one follower. double wired remote controller? (Wired remote controller address connector) Check wired remote controller board. → Replace it if necessary. [E18 error] Are A/B wires normal? Correct wired remote controller wire connection. Improper harness connection Correct connector connection.
  • Page 56 [L30 error] Are outside devices of Check indoor P.C. board (MCC-1510). Defect → Replace connector CN80 connected? Check outside devices. Do outside devices normally work? Defect → Replace Check cause of operation. [F10 error] Is connection of TA sensor connector Correct connection of connector.
  • Page 57 [P12 error] Turn OFF the breaker. Turn it ON 10 seconds after. Does fan stop Is min. 1V DC present Replace with operation OFF? between CN210 pin + and – ? indoor unit fan motor. Start cooling Replace indoor unit with LOW fan speed.
  • Page 58 [F02 error] Is connection of TC sensor connector Correct connection of connector. (CN101 on Indoor P.C. board) correct? Are characteristics of Replace TC sensor. TC sensor resistance value normal? ∗ Refer to Characteristics-2. Check indoor P.C. board (MCC-1696). Defect → Replace [F01 error] Is connection of TCJ sensor connector Correct connection of connector.
  • Page 59 Temperature sensor Temperature – Resistance value characteristic table TA, TC, TCJ, TE, TS, TO sensors TD, TL sensors Representative value Representative value Resistance value (kΩ Ω Ω Ω Ω ) Resistance value (kΩ Ω Ω Ω Ω ) Temperature Temperature (°C) (°C) (Minimum value) (Standard value) (Maximum value)

  • Page 60: Replacement Of Service P.c. Board

    9. REPLACEMENT OF SERVICE P.C. BOARD Model type P.C. board model RAV-GM∗∗∗KRTP series MCC-1696 [Requirement when replacing the service indoor P.C. board assembly] In the non-volatile memory (Hereinafter said EEPROM, IC10) installed on the indoor P .C. board before replacement, the type and capacity code exclusive to the corresponding model have been stored at shipment from the factory and the important setup data such as refrigerant line /indoor unit /group address in (AUTO/MANUAL) mode have been stored at installation.
  • Page 61 H1 Readout of the setup data from EEPRO (Data in EEPROM contents, which have been changed at the local site, are read out together with data in EEPROM set at shipment from the factory.) TE ST 1. Push buttons of the remote controller at the same time for 4 seconds or more. (Corresponded with No.
  • Page 62 H2 Replacement of service P.C. board 1. Replace the P .C. board with a service P .C. board. In this time, setting of jumper line (cut) or setting of DIP switch on the former P .C. board should be reflected on the service P .C.
  • Page 63 P.C. board parts layout drawing MCC-1696 SW02 DB01 Dip switch(SW01, SW02) IC501 SW01 Method of DIP switch setting Selected content At shipment RAV-GM KRPT series Bit 1 Terminator resistor (for central control) OFF (Without terminator) SW01 OFF (A selection) Bit 2 Remote controller A/B selection Bit 1 Custom / Multi model selection...
  • Page 64 H3 Writing of the setup contents to EEPROM (The contents of EEPROM installed on the service P .C. board have been set up at shipment from the factory.) TE ST 1. Push buttons of the remote controller at the same time for 4 seconds or more. (Corresponded with No.
  • Page 65 CODE No. (DN) table (Please record the objective unit data at field) Item Memo At shipment Filter sign lighting time 0001: 150 hour Dirty state of filter 0000: Standard Central control address 0099: Unfixed Heating suction temp shift 0002: +2°C PRE-DEF indication selection 0000: Standard 0000: Auto mode...

  • Page 66: Setup At Local Site And Others

    10. SETUP AT LOCAL SITE AND OTHERS 10-1. Test Run Setup on Remote Controller <Wired remote controller> TEST 1. When pushing button on the remote controller for 4 seconds or more, “TEST” is displayed on LC display. ON / OFF Then push button.

  • Page 67: Forced Defrost Setup Of Remote Controller

    10-2. Forced Defrost Setup of Remote Controller (For wired remote controller only) (Preparation in advance) Push TEST buttons simultaneously for 4 seconds or more on the remote controller. (Push buttons while the air conditioner stops.) The first displayed unit No. is the master indoor unit address in the group control. Every pushing button, the indoor unit No.

  • Page 68: Function Selection Setup (Wired Remote Controller Only)

    10-4. Function Selection Setup (Wired Remote Controller Only) <Procedure> Perform setting while the air conditioner stops. Push TEST buttons simultaneously for 4 seconds or more. The first displayed unit No. is the header indoor unit address in the group control. In this time, fan and louver of the selected indoor unit operate.
  • Page 69 Function selection CODE No. (DN) list CODE No. At shipment Item Contents (DN) from factory 0000: None 0001: 150H Filter sign lighting time 0002: 2500H 0003: 5000H 0001: 150H 0004: 10000H 0005: Clogging sensor used 0000: Standard Filter stain level 0000: Standard 0001: Heavy stain (Half of standard time) 0001: No.1 unit...

  • Page 70: Wiring And Setting Of Remote Controller Control

    10-5. Wiring and Setting of Remote Controller Control 2-remote controller control <Wireless remote controller A-B selection> (Controlled by 2 remote controllers) Using 2 wireless remote controllers for the respective air conditioners, when the 2 air conditioners are This control is to operate 1 or multiple indoor units are operated by 2 remote controllers.

  • Page 71: Monitor Function Of Remote Controller Switch

    10-6. Monitor Function of Remote Controller Switch n Calling of sensor temperature display <Contents> Each data of the remote controller, indoor unit and outdoor unit can be understood by calling the service monitor mode from the remote controller. <Procedure> Push TEST buttons simultaneously for 4 seconds to call the service monitor mode.

  • Page 72: Calling Of Error History

    10-7. Calling of error history <Contents> The error contents in the past can be called. <Procedure> Push TEST buttons simultaneously for TEMP. ON / OFF 4 seconds or more to call the service check mode. Service Check goes on, the CODE No. 01 is displayed, and TIMER SET MODE then the content of the latest alarm is displayed.
  • Page 73 n 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> Not normal Gr construction check 3 minutes elapse Normal...

  • Page 74: Tcc-Link Central Control

    10-9 . TCC-LINK Central Control 10-9-1. Functions Connect an indoor unit to the TCC-LINK central controller. 10-9-2. Connection Diagram Central controller Indoor unit CN40 Terminal block CN41 (U3/U4) TCC-LINK Number of units : 64 Terminal block Communication length : 2km (A/B) Remote controller - 74 -...
  • Page 75 10-9-3. Wiring Specifications Number of wires Size Specification Up to 1000 m: 1.25 mm² stranded wires MVVS Up to 2000 m: 2.0 mm² stranded wires • A 2-wire non-polarity cable is used. • The cable length depends on each central control system. •...
  • Page 76 10-9-4. Setting Onboard Switches Setting of terminating resistors is necessary for central control of custom indoor units only. • Use SW01 to set terminating resistors. • Set terminating resistors for the indoor unit only with the smallest refrigerant line address. Central control device Central control device Central control devices: Max.
  • Page 77 10-9-5. Onboard Switch Setting Procedure 1. Remove the front panel. • Before removing the front panel, direct th horizontal louver to the direction shown in the figure below. • Remove the screws securing the front panel, and detach it from the indoor unit. 2.
  • Page 78 10-9-6. Setting Addresses Overview To connect DI-SDI air conditioners to the TCC-LINK central control system for central control/monitoring, addresses of connected indoor units must be set in the following procedure. Connections/wiring completed System power ON Auto address setting The system performs automatically after power on. Manual setting/change of Change refrigerant line address.
  • Page 79 (1) Manual setting/change of indoor unit refrigerant line addresses [In the case of 29 refrigerant systems or less (when multiple air conditioners are included, their number of refrigerant systems is also included)] Refrigerant address “1” is assigned to all indoor units except for group control by the auto address setting after system power on.
  • Page 80 (2) Manual setting/change of indoor unit refrigerant line addresses [In the case of 30 refrigerant systems or more (when multiple air conditioners are included, their number of refrigerant systems is also included)] Regarding refrigerant systems up to No. 29, manual setting/change is the same as that on the previous page.
  • Page 81 10-9-7. Central Control Address Number Setting To connect an indoor unit to the central control remote controller, an address number for central control must be set. • An address number for central control is indicated as the refrigerant line number of the remote controller. 1 Setting by Remote Controller on Indoor Unit Side <Procedure>...

  • Page 82: Address Setup

    11. ADDRESS SETTING 11-1. Address Setting Address Setting Procedure When twin or triple operation is selected with one indoor unit and one outdoor unit or when one outdoor is connected to each indoor unit even with multiple refrigerant systems in group operation, auto address setting is completed during the power on process of outdoor unit.

  • Page 83: Address Setup & Group/Twin/Triple Control

    11-2. Address Setting and Group/Twin/Triple Control <Definition of terms> Indoor unit No. : N-n=O/U refrigerant line address N (30 max.) -I/U address n (64 max.) Group address : 0=Individual (without group control) 1=Header unit under group control 2=Follower units under group control Header indoor unit (=1) : A representative unit of multiple indoor units in group operation, which performs communication between remote controller and follower I/U.
  • Page 84 [2] Examples of Aut Address Setting fro No Address Setting 1) Standard (one outdoor unit) a) Single b) Twin c) Double twin (1-1) (1-2) (1-1) (1-2) (1-3) (1-4) (H/M) individual *** Turn ON the power. Address setting is completed automatically.*** 2) Group operation (multiple O/U = multiple indoor units with serial communication interface, no twin) 8 indoor units maximum *** Turn ON the power.

  • Page 85: Address Setting

    11-3. Address Setting When determining indoor unit addresses with wiring completed without piping construction (Manual setting by remote controller) <Address setting procedure> • Connect a remote controller to the indoor unit whose address you want to set one to one. Wiring example of 2 refrigerant systems •...
  • Page 86 n Checking location of indoor unit number (1) To find the address of indoor unit whose location is clear In case of independent operation (1:1 connection of wired remote controller and indoor unit) Perform the procedure during operation of indoor unit. <Procedure>...

  • Page 87: How To Replace The Main Parts

    12. HOW TO REPLACE THE MAIN PARTS WARNING • Since high voltages pass through the electrical parts, turn off the power without fail before proceeding with the repairs. Electric shocks may occur if the power plug is not disconnected. • After the repairs have been completed (after the front panel and cabinet have been installed), perform a test run, and check for smoking, unusual sounds and other abnormalities.
  • Page 88 Part name Procedures Remarks Front panel 1) Stop operation of the air conditioner and turn off its main power supply. Front panel Air inlet grille 2) Open two screw caps and securely remove screws (2 pcs.) at the front panel. Hooks of front panel Screw...
  • Page 89 Part name Procedures Remarks Fan motor 1) Follow the procedure item 3 and 4 . Cross flow fan 2) Loosen the set screw of the cross flow fan. Cross flow fan Body back 3.5 mm Vertical louver Set screw Fan motor Hexagon screw driver 3) Remove 2 fixing screws of the motor band.
  • Page 90 Part name Procedures Remarks Drain pan 1) Follow the procedure item 3 . assembly 2) Remove screw holding the electric part cover. Connectors P.C.board Screw Electric part cover Louver motor connector 3) Disconnect the louver motor connector (5P) from P.C. board assembly. 4) Remove fixing screws of the unit display and remove unit display.
  • Page 91 Part name Procedures Remarks Vertical louver 1) Follow the procedure item 3 and 7 . assembly 2) Remove 2 fixing screws from the base vertical Vertical louver louver then remove the vertical louver assembly from the body back. Screw Screw Cross flow fan 1) Follow the procedure item 3 and 4 .
  • Page 92 Part name Procedures Remarks Heat exchanger 1) Follow the procedure in item 3 and 4 . (Evaporator) 2) Remove 2 fixing screws at the left side of the heat exchanger. Screws 3) Remove fixing screw at the upper right side of the heat exchanger.
  • Page 93 Microcomputer Part name Procedure Remarks  Common procedure 1) Turn the power supply off to stop the Replace terminal block, operation of air-conditioner. microcomputer ass’y and the P .C. board ass’y. 2) Remove the front panel. • Remove the 2 fixing screws. 3) Remove the electrical part base.

  • Page 94: Exploded Views And Parts List

    For orders of the service parts for High Wall type air conditioners, please check the service parts on Web site of [TOSHIBA CARRIER THAILAND CO., Ltd.], and then place an order for parts to (TOSHIBA CARRIER THAILAND CO., Ltd.). Location...
  • Page 95 For orders of the service parts for High Wall type air conditioners, please check the service parts on Web site of [TOSHIBA CARRIER THAILAND CO., Ltd.], and then place an order for parts to (TOSHIBA CARRIER THAILAND CO., Ltd.). Location...

  • Page 96: Appendix (Lite-Vision Plus Remote Controller Installation Manual)

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  • Page 110 WARNINGS ON REFRIGERANT LEAKAGE Important Check of Concentration Limit The room in which the air conditioner is to be installed requires a design that in the event of NOTE 2 : refrigerant gas leaking out, its concentration will The standards for minimum room volume are as follows. not exceed a set limit.
  • Page 111 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.

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