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Toshiba TCB-IFDLR01UP-E Service Manual
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Toshiba TCB-IFDLR01UP-E Service Manual

Dx-coil controller for air-conditioner (option kit)
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SERVICE MANUAL
AIR-CONDITIONER
LC DX-COIL INTERFACE
Model name:
Dx-coil controller
TCB-IFDLR01UP-E
• For the outdoor unit, refer to the service manual.
• For the Air Handling Unit contact the manufacturer you made the purchase.
• TOSHIBA Carrier does not take any responsibility on the local design.
FILE NO. SVM-23087-4
(OPTION KIT)
(Terminal block with relay)
Revised on May, 2024

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Summary of Contents for Toshiba TCB-IFDLR01UP-E

  • Page 1 (Terminal block with relay) • For the outdoor unit, refer to the service manual. • For the Air Handling Unit contact the manufacturer you made the purchase. • TOSHIBA Carrier does not take any responsibility on the local design. Revised on May, 2024...

  • Page 2: Table Of Contents

    CONTENTS 1. OVERVIEW .................. 2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)......3. WIRING DIAGRAMS ..............4. REFRIGERANT CYCLE DIAGRAM ..........4- 1. TC and TCJ sensor position on DX COIL ................ 4-2. Installation temperature sensor ..................5. PARTS RATING ................6. CONTROL OUTLINE ..............7.
  • Page 3 Generic Denomination: Air Conditioner Definition of Qualified Installer or Qualified Service Person The air conditioner must be installed, maintained, repaired and removed by a qualified installer or qualified service person. When any of these jobs is to be done, ask a qualified installer or qualified service person to do them. A qualified installer or qualified service person is an agent who has the qualifications and knowledge described in the table below.
  • Page 4 Definition of Protective Gear When the Dx-coil interface 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 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 to the OFF position. Otherwise, electric shocks may result. Before opening the electrical box cover, set the circuit breaker to the OFF position.
  • Page 6 WARNING Before starting to repair the Dx-coil interface, 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 Dx-coil interface. Repair of the Dx-coil interface by unqualified person may give rise to a fire, electric shocks, injury, water leaks and / or other problems.
  • Page 7 Do not modify the products. Do not also disassemble or modify the parts. It may cause a fire, electric shock or injury. Prohibition of modification. When any of the electrical parts are to be replaced, ensure that the replacement parts satisfy the specifications given in the Service Manual (or use the parts contained on the parts list in the Service Manual).
  • Page 8 After repair work, surely assemble the disassembled parts, and connect and lead the removed wires as before. Perform the work so that the electrical box cover 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 Assembly / at user’s side.
  • Page 9 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. If you fail to heed this warning, you will run the risk of burning yourself because the compressor pipes and other parts will be very hot to the touch.

  • Page 10: Overview

    1. Overview LC Dx-coil interface is the product that is used with connecting the AHU with the DX COIL prepared on-site to the TOSHIBA LC outdoor unit. * 1 DX COIL: Abbreviation of the Direct expansion coil (heat exchanger). * 2 DDC: Abbreviation of the Direct Digital Controller.
  • Page 11 : Direct capacity control of Toshiba Carrier LC outdoor unit by analogue input (0-10 V) DDC type Mainly discharge air temperature control linked AHU system. Locally procured Dx-coil controller Outdoor unit < Connectable CDU > - Super Digital Inverter (SDI)
  • Page 12  Settings for each type (TA, DDC) Set with the SW501 switch on the control P.C. board MCC-1777. SW501 SW501 setting Bit 1 : ON For LC model Bit 2 : OFF TA type Bit 3 : OFF Bit 3 : ON DDC type *2 Bit 4 : OFF Bit 4 : ON...

  • Page 13: Construction Views (External Views)

    • This product is designed for the indoor installation. • If the temperature sensor is short, use the Optional Sensor TCB-IFDES1001P-E. (Temperature sensor with 10 m wiring length) Terminal block type classification table. TCB-IFDLR01UP-E (Terminal block with relay) Terminal block (32P) Terminal block (6P with relay)

  • Page 14: Wiring Diagrams

    3. WIRING DIAGRAMS - 14 -...

  • Page 15: Refrigerant Cycle Diagram

    4. REFRIGERANT CYCLE DIAGRAM 4-1. TC and TCJ sensor position on DX COIL Gas pipe Capillary Tube Header DX COIL TC Ø6 mm (Brazing) Distributor TCJ Ø6 mm (Brazing) Liquid pipe 50 mm ± 25 mm from the end plate DX COIL type: Normal Example TA sensor position 1.

  • Page 16: Installation Temperature Sensor

    4-2. Installation temperature sensor By the refrigerant circuit diagram, braze the sensor holder of TC, TCJ and the accessory. Refer to the below table for the pipe diameter and the pipe length to use. Sensor holders • To ensure reliable operation, all Sensor holders must be fitted by brazing. •...

  • Page 17: Parts Rating

    5. PARTS RATING Dx-coil controller Q'ty part name Model name or specification TCB-IFDLR01UP-E MCC-1777 P.C. board Terminal block JXO-3B, AC250V 20A (3P, for power supply) Terminal block PCKK2.5-01P-11-00A(H) (for signal lines) G2RV-SR700 Relay model name G2RV-SR700-12DC Terminal block with relay...
  • Page 18 Temperature sensor characteristics TA sensor Temperature [˚C] Resistance [kΩ] 33.9 Resistance 26.1 [kΩ] 20.3 15.9 12.6 10.0 Temperature [˚C] TC and TCJ sensors Temperature [°C] Resistance [kΩ] 101.7 76.3 57.7 44.0 33.8 Resistance 26.1 [kΩ] 20.4 (10 °C or below) Resistance 16.0 [kΩ]...

  • Page 19: Control Outline

    6. CONTROL OUTLINE Item Specification outline Remarks Upon power 1) Distinction of outdoor unit supply reset When the power supply is reset, the outdoors are distinguished and the control is selected according to the distinguished result. 2) If resetting the power supply during occurrence of a trouble, the check code is once cleared.
  • Page 20 Item Specification outline Remarks The difference between the suction temperature and AUTO the discharge temperature and suction temperature Heat recovery set by the remote controller automatically switches system outdoor unit between cooling and heating operations. If both type conditions 1 and 2 are satisfied, the thermostat will be turned on.
  • Page 21 Item Specification outline Remarks (TA type) Automatic capacity Based on the difference between TA and Ts, the operation control capacity is determined by the outdoor unit. COOL HEAT (˚C) (˚C) Ts: Temperature set by –1 remote controller. TA: Room temperature. –1 –2 The Forced thermostat OFF will be activated when conditions below are satisfied.
  • Page 22 Item Specification outline Remarks Forced Fan OFF When the Outdoor / Suction air temp. is low, the following controls will be operated. OPERATION STANDBY is displayed (1) The fan is forcibly turned off according to the temperature of outdoor ambient (suction) (TA) COOL When TA...
  • Page 23 Item Specification outline Remarks 1. During cooling, the air conditioner is operated in the manner Freeze prevention described below according to the temperature readings of the TC1, control (low TC2 and TCJ sensors. temp. release) • If this control occurs •...
  • Page 24 Item Specification outline Remarks Heating While the outdoor unit is recovering heating refrigerant (oil), the indoor • Recovery refrigerant (oil) units perform the following control tasks: operation normally recovery takes place 1)Open the indoor PMV to a certain degree. control roughly every hour.
  • Page 25 Item Specification outline Remarks Frequency <In case of wired remote controller> Command frequency fixed is approximately [S7] 1) When pushing [CHK] button for 4 seconds or more, [TEST] is displayed operation on the display screen and the mode enters in Test run mode. (Test run) 2) Push [ON/OFF] button.
  • Page 26 Item Specification outline Remarks FAN control by Change the fan speed by inputting 4-20mA to the terminal ＊AI1 / AI1. external input (1) 4- 20mA upload fan speed DN [4A0] = 0000: No setting = 0001: With control (FAN control from the outside is prioritized) = 0002: With control (Priority is given to FAN control by 4 - 20mA input) DN [4A1] = 0014: 14mA　(default) applicable range 7mA to 16mA...
  • Page 27 Item Specification outline Remarks Secondary Secondary heating can be used while heating operations are performed. heating <Control Outline (Normal Mode)> 1) If the difference between the indoor temperature and the outdoor temperature is large while the air conditioner is operating, turn ON the secondary heating. 2) This function is valid when the CODE No.
  • Page 28 Item Specification outline Remarks Secondary DN [C5] Data Secondary heating mode heating (Continued) 0000 Normal mode (Factory default) 0001 Flip mode DN [C6] Data : Set temp. out (high) [ºC] -0015 "-0015": -15ºC to "0015": 15ºC "0000": 0ºC (Factory default) 0015 DN [C7] Data...

  • Page 29: Input And Output Port

    7. INPUT AND OUTPUT PORT 7-1. Dx-coil controller Print Circuit Board MCC-1777 - 29 -...
  • Page 30 ■MCC-1777 Connector Connector Function Pin No. Wire color Specification No. CN color (RED) (RED) (BLK) (BLK) (YEL) (BLK) (WHI) Defrost mode (WHI) (BLU) Output Digital output Thermostat on (WHI) (ORN) Output Digital output (BLU) (RED) Fan motor active (WHI) (BLK) Output Digital output Output 1 (0-10V)

  • Page 31: Test Run

     Interface P.C.board function setting exchange table When operating the SW, turn off the power before setting. Function Name Detail (Default) Communication None Enable Error will occur, when turn off Bit1. The default is TA type. For TF type, turn on None TA switching TA type...

  • Page 32: Input And Output Specification

    Select side for the power wire clamping position according to the wire type and diameter. Details of the blade terminal TCB-IFDLR01UP-E (Terminal block with relay) for terminal block (38P) 12 12 12 12 12 12 14 14 14 14 14 14...
  • Page 33 Terminal Function Description Operating output Digital output DC12 V Alarm active digital output Digital output DC12 V Fan motor active digital output Digital output DC12 V Defrost mode digital output Digital output DC12 V DO1 Digital output 1 (User defined) Digital output DC12 V DO2 Digital output 2 (User defined)
  • Page 34 (Terminal block with relay) MAX. 500 m Locally procured DO1 - DO6 • Use the contact side of the relay terminal used in TCB-IFDLR01UP-E according to the specifications shown in the table below. Relay model name Contact rating Load conditions...
  • Page 35 Terminal DO7 / DO7: Thermostat on Digital output (DC12 V) • When the thermostat of Dx-coil is ON, a signal comes out. TCB-IFDLR01UP-E (Terminal block with relay) MAX. 500 m Locally procured Signal DC12 V DO7 - DO7 - DOE...
  • Page 36 Terminal DI1 / DI1: Safety contact (Normal close) MODE 1 (Normally close, DC12 V) *When Bit1 of SW505 is OFF • If this contact is open for more than 1 minute, the check code P10 is generated and the Dx-coil controller switches off automatically.
  • Page 37 SIGNAL (-) DI2 - DI4 Normally open Terminal DI6 / DI6: External ON/OFF Input • When using with DDC, it starts by turning on this terminal. TCB-IFDLR01UP-E (Terminal block with relay) MAX. 100 m Locally procured (Input, DC5 V) Relay coil signal...
  • Page 38 [4A1] -7 mA Applicable range -1 to -12 *² *1: Upper limit. DN [4A1] + DN [4A2] ≤ 18 mA *2: Lower limit. DN [4A1] - DN [4A3] ≥ 4 mA TCB-IFDLR01UP-E (Terminal block with relay) MAX. 100 m Locally procured...
  • Page 39 • Terminal AI4 / AI4 cannot be used. SW501 Bit4 Function STEP response to analogue input LINEAR response to analogue input TCB-IFDLR01UP-E (Terminal block with relay) Shield wire MAX. 200 m Locally procured 0 - 10 V Signal (+) Input...
  • Page 40 * Terminal AO2 / AO2 cannot be used. STOP CAUTION The impedance of the device that receives the 0 - 10 V output signal shall be 10 kΩ or more. TCB-IFDLR01UP-E (Terminal block with relay) Shield wire MAX. 200 m Locally procured...
  • Page 41  Modbus setting method Modbus communication is available on this model. Follow the procedure below to set. CAUTION Use insulation type for Modbus devices to be connected. If it is not an insulation type, it may affect the device due to noise, etc. 1.
  • Page 42 3. Address assignment table Register address Read / Write Data Byte Holding Register 40001 R / W Operation / stop setting 40002 Operation mode setting 40003 Set temperature setting 40004 Automatic cooling set temperature (Dual set point) setting 40005 Automatic heating set temperature (Dual set point) setting 40006 Fan speed setting 40007...
  • Page 43 Register address Read / Write Data Byte Input Register Reserved 30073 ~ 30078 Under restriction of compressor speed due to heat sink 30079 overheating in outdoor unit(s) Cooling / heating start control output 30080 Defrost Mode Digital Output 30081 Pre defrost signal output 30082 Cooling oil recovery / Heating ref recovery 30083...

  • Page 44: Method To Set The Ahu Function Dn Code

    7-4. Method to set the AHU function DN code (When performing this task, be sure to use a wired remote controller.)  DN setting Remote controller model name: RBC-ASCU1 -E (TR) Basic procedure Be sure to stop the air conditioner before making settings. (Change the setup while the air conditioner is not working.) CAUTION Set only the Code No.
  • Page 45 When all the settings have been completed, push ON/OFF button to finish the settings. (Return to the normal mode) “ ” flashes and then the display content disappears and the air conditioner enters the normal stop mode. (The remote controller is unavailable while “ ”...
  • Page 46 Function CODE No. (DN Code) table (includes all functions needed to perform applied control on site) Setting allowed Item Description At shipment 0000: None 0001: 150H 01 Filter display delay timer 0002: 2500H 0003: 5000H 0000: None 0004: 10000H 0000: Standard 02 Dirty state of filter 0000: Standard 0001: High degree of dirt (Half of standard time)
  • Page 47 Setting allowed Item Description At shipment Cooling forced thermostat OFF temp. Tαc (Minimum Outdoor/Suction air temp.) 0018: 18°C ~ 0025: 25°C 0019: 19°C Heating forced thermostat OFF temp. Tαh 0000: 0°C ~ 0017: 17°C 0015: 15°C (Maximum Outdoor/Suction air temp.) Cooling design thermostat ON/OFF temp.

  • Page 48: Troubleshooting Based On Information Displayed On Remote Controller

    7-5. Troubleshooting based on information displayed on remote controller  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.

  • Page 49: Check Code Clearing Function

    7-6. Check code clearing function ∗ ∗ ∗ ∗ ∗ <RBC-ASCU11- > Clearing a check code of the outdoor unit Clear the currently detected outdoor unit for each refrigerant line to which the indoor unit controlled by the remote controller is connected. (The indoor unit check code is not cleared.) Use the service monitoring function of the remote controller.

  • Page 50: Monitoring Function Of Wired Remote Controller

    7-7. Monitoring function of wired remote controller ∗ ∗ ∗ ∗ ∗ <RBC-ASCU11- > "Monitoring function" display Indoor unit number Data 2, 4 Push the [menu] button for over 10 seconds. “Monitoring function” is displayed on a screen. Every pushing [ ] buttons, the indoor unit numbers in group control are displayed successively.
  • Page 51 Indoor service monitor list Remote controller Code No. Data name Display format Unit display example Room temperature (Use to control) ℃ Room temperature (Remote controller) ℃ Indoor suction air temperature (TA) ℃ Indoor coil temperature (TCJ) [0024]=24°C ℃ Indoor coil temperature (TC) ℃...

  • Page 52: Exploded Views And Parts List

    Terminal *MdA and MdB 1134795301 SENSOR OUTPUT INPUT VALVE KIT OUTDOOR UNIT 1134795102 Q'ty / Set Location Part No. Description TCB-IFDLR01UP-E 43TNV347 PC BOARD ASSY, MCC-1777 43T60402 TERMINAL:3P 43T60591 TERMINAL, DEGSON 43T54326 TERMINAL, RELAY, OMRON 43T50426 SENSOR,TC 43T50427 SENSOR,TCJ 43T50428...
  • Page 53 CARRIER AIR CONDITIONING (THAILAND) CO., LTD. 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANGPATHUMTHANI, PATHUMTHANI 12000, THAILAND...

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