Toshiba RAV-HB121BTP-UL Service Manual
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Toshiba RAV-HB121BTP-UL Service Manual

Toshiba RAV-HB121BTP-UL Service Manual

Indoor unit, concealed duct type
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SERVICE MANUAL
AIR-CONDITIONER
INDOOR UNIT
Concealed Duct Type
RAV-HB121BTP-UL
RAV-HB181BTP-UL
RAV-HB241BTP-UL
RAV-HB301BTP-UL
RAV-HB361BTP-UL
RAV-HB421BTP-UL
RAV-HB481BTP-UL
R454B
(SPLIT TYPE)
FILE NO. SVM-24050
November, 2024

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Summary of Contents for Toshiba RAV-HB121BTP-UL

  • Page 1 FILE NO. SVM-24050 SERVICE MANUAL AIR-CONDITIONER (SPLIT TYPE) INDOOR UNIT Concealed Duct Type RAV-HB121BTP-UL RAV-HB181BTP-UL RAV-HB241BTP-UL RAV-HB301BTP-UL RAV-HB361BTP-UL RAV-HB421BTP-UL RAV-HB481BTP-UL R454B November, 2024...

  • Page 2: Table Of Contents

    Original instruction Adoption of R454B Refrigerant This Air Conditioner is an environmentally friendly refrigerant. CONTENTS Safety caution ................... Precaution for Safety ................Refrigerant R454B ..................1. SPECIFICATIONS ................AIR DUCTING WORK ................ CONSTRUCTION VIEWS (EXTERNAL VIEWS) ........ DIMENSIONAL DRAWING ..............SPECIFICATIONS OF ELECTRICAL PARTS ........

  • Page 3: Generic Denomination: Air Conditioner

    Thank you for purchasing this air conditioner. Please read carefully through these instructions that contain important information and ensure that you understand them. After completing the installation work, hand over this Installation Manual as well as the Owner’s Manual provided with the outdoor unit to the user, and ask the user to keep them in a safe place for future reference. 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...
  • 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

    Warning indications on the Air Conditioner Unit This mark is for R454B refrigerant only. Refrigerant type is written on nameplate of outdoor unit. WARNING In case that refrigerant type is R454B, this unit uses a flammable refrigerant. (Risk of fire) If refrigerant leaks and comes in contact with fire or heating part, it will create harmful gas and there is risk of fire.

  • Page 6: Precaution For Safety

    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. Otherwise, electric shocks may result.
  • Page 7 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 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 8 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 9 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 Assembly / at user’s side.
  • Page 10 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 11: Refrigerant R454B

    Refrigerant (R454B) This air conditioner adopts HFC type refrigerant (R454B) which does not deplete the ozone layer. 1. Safety Caution Concerned to Refrigerant The pressure of R454B is higher than of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed. Therefore, 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 during installation work or service work.
  • Page 12 4. Tools 1. Required Tools for R454B Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types. 1) Tools exclusive for R454B (Those which cannot be used for conventional refrigerant (R22)) 2) Tools exclusive for R454B, but can be also used for conventional refrigerant (R22) 3) Tools commonly used for R454B and for conventional refrigerant (R22) The table below shows the tools exclusive for R454B and their interchangeability.

  • Page 13: Specifications

    1. SPECIFICATIONS Concealed Duct type Size Indoor Model HB121BTP-UL HB181BTP-UL HB241BTP-UL HB301BTP-UL HB361BTP-UL HB421BTP-UL HB481BTP-UL RAV- Outdoor Model BP121AT2P-UL BP181AT2P-UL BP241AT2P-UL BP301AT2P-UL BP361AT2P-UL BP421AT2P-UL BP481AT2P-UL RAV- 30000 Cooling Rated Capacity (Btu/h) 12000 18000 24000 36000 42000 48000 17.10 17.10 19.40 19.50 18.10 SEER2...

  • Page 14: Air Ducting Work

    2. AIR DUCTING WORK Static Pressure Characteristics HB121BTP type HB181BTP type Standard air flow: 395 CFM Standard air flow: 540 CFM 0.6 in.WG- High tap 0.6 in.WG- High 0.4 in.WG- Mid tap 0.4 in.WG- Mid tap 0.4 in.WG- High tap 0.4 in.WG- High tap 0.4 in.WG- Low tap 0.26 in.WG - High tap...

  • Page 15: Construction Views (External Views)

    3. CONSTRUCTION VIEWS (EXTERNAL VIEWS) Unit : in(mm) Hanging bolt pitch B 0.9"(22) 29.5"(750) Main unit dimension A 2.0"(50) Hanging bolt pitch 25.6"(650) 2.0"(50) External dimensions of flange C 13.6"(345) 7.4" (187.5) 14.0"(355) 1.0"(25) Access panel 16.3"(415) Electrical Drain pan / Drain control box 22.4"(570) pump check cover...
  • Page 16 HB12 Type HB18, 24 Type <Bottom air intake> <Bottom air intake> 37.8" 26.0" (959.4) (659.4) 1.5" 3.9" 3.9" 3.9" 3.9" 3.9" 3.9" 3.9" 3.9" 3.9" 1.5" 1.5" 3.9" 3.9" 3.9" 3.9" 3.9" 3.9" 1.5" (37.5) (100) (100) (100) (100) (100) (100) (100) (100)

  • Page 17: Wiring Diagram

    4. WIRING DIAGRAM - 17 -...

  • Page 18: Specifications Of Electrical Parts

    5. SPECIFICATIONS OF ELECTRICAL PARTS Parts name Type Specifications Fan motor (HB12 Type) WDF-340W150AA1 Output (Rated) 150W, 220-240V Fan motor (HB18, 24 Type) WDF-340W150AA Output (Rated) 150W, 220-240V Fan motor (HB30, 36, 42, 48 Type) LDF-340W250A Output (Rated) 250W, 220-240V 8.58"...

  • Page 19: Indoor Control Circuit

    6. INDOOR CONTROL CIRCUIT 6-1. Indoor Controller Block Diagram Connection of Wired (Simple) Remote Controller Wired (Simple) master remote controller (Max. 2 units) Schedule timer Display LCD Function setup Display LCD LCD driver Display LED Key switch Function setup Key switch DC5V DC5V Remote controller...

  • Page 20: Connection Of Wireless Remote Controller Kit

    Connection of Wireless Remote Controller Kit Indoor unit #1 (Header) Wireless remote controller kit Receiver P .C. board Display LED Receive circuit Function setup SW Buzzer DC5V Power Remote controller circuit communication circuit (Follower) (Follower) Indoor control P.C. board (MCC-1720) EEPROM2 DC20V Remote controller...

  • Page 21: Connection Of Both Wired (Simple) Remote Controller And Wireless Remote Controller Kit

    Connection of Both Wired (Simple) Remote Controller and Wireless Remote Controller Kit Indoor unit #1 (Header) Wired (simple) master remote controller Wireless remote controller kit (Max. 2 units) Schedule timer Display LED Receiver P.C. board Display Function Display setup driver Receive Function setup SW Display...

  • Page 22: Control Specifications

    6-2. Control Specifications 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. 2) Setting of indoor fan speed and existence of air direction adjustment Based on EEPROM data, select setting of the indoor fan speed.
  • Page 23 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 Temperature setting adjustment +0 ˚F +3.6 ˚F +7.2 ˚F +10.8 ˚F [+0˚C]...
  • Page 24 Item Outline of specifications Remarks Fan speed control 1) Operation with (HH), (H), (L) or [AUTO] mode is carried HH > H+ > H > L+ > out by the command from the remote controller. L > UL 2) When the fan speed mode [AUTO] is selected, the fan speed varies by the difference between Ta and Ts.
  • Page 25 Item Outline of specifications Remarks Fan speed control (Continued) HB12BTP 0.12 in WG 0.26 in WG 0.20 in WG 0.40 in WG 0.32 in WG 0.48 in WG 0.60 in WG Static pressure mode DN:5d (Factory setting) DIP SW OFF-OFF ON-OFF OFF-ON ON-ON...
  • Page 26 Item Outline of specifications Remarks Cool air discharge 1) In heating operation, the indoor fan is controlled based on In D and E zones, preventive control the detected temperature of Tc sensor or Tcj sensor. As the priority is given shown below, the upper limit of the revolution frequency is to air volume restricted.
  • Page 27 Item Outline of specifications Remarks High-temp. 1) The heating operation is performed as follows based on the release control detected temperature of Tc sensor or Tcj sensor. • When [M] zone is detected, the commanded frequency is However this control is decreased from the real operation frequency.
  • Page 28 Item Outline of specifications Remarks Frequency <In case of wired remote controller> Command frequency is fixed operation approximately [S7] 1) When pushing [CHK] button for 4 seconds or more, [TEST] is (Test run) displayed on the display screen and the mode enters in Test run mode.
  • Page 29 Item Outline of specifications Remarks Central control 1) Setting at the central controller side enables to select mode selection the contents which can be operated on the wired remote controller. 2) Setup contents • In case of TCC-LINK Central remote controller (TCB-SC642TLE2) [Individual]: Operated by wired remote controller...
  • Page 30 Item Outline of specifications Remarks DC motor 1) When the fan operation has started, positioning of the stator and the rotor are performed. (Moves slightly with tap sound) 2) The motor operates according to the command from the indoor controller. Notes) •...
  • Page 31 Item Outline of specifications Remarks SAVE Save operation 1) Turn on button on the remote controller. Carry out setting operation during stop of 2) During operation of save operation, lights on the the unit; otherwise the wired remote controller. unit stops operation. 3) During save operation, the current release control is For the setup operation, performed with the restriction ratio set in EEPROM on...

  • Page 32: Indoor Print Circuit Board

    6-3. Indoor Print Circuit Board <MCC-1720> - 32 -...

  • Page 33: Specification

    Indoor P.C. Board Optional Connector Specifications (MCC-1720) Function Connector No. Pin No. Specification Remarks Fan output DC12 V Factory default setting: ON when indoor unit in operation and OFF when indoor unit at rest Output CN32 * Fan can be operated on its own by pressing FAN button on remote controller (DN = 31) Start / stop input Start / stop input for HA (J01: In place / Removed...

  • Page 34: Troubleshooting

    7. TROUBLESHOOTING 7-1. 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 35: Before Troubleshooting

    <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 36: Troubleshooting Outline Judgment

    7-2. Troubleshooting Outline of judgment When one of the following phenomena appears, an error of the power relay (RY01) is considered; therefore replace the P.C. board. • The operation • The fan stops immediately. After approx. 1minute The screen of the →...
  • Page 37 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 ⎬ ⎪ Alternate flash Heat exchanger sensor (TA) error ⎭ ⎫ Discharge temp. sensor (TD) error ⎪...

  • Page 38: Others (Other Than Check Code)

    Others (Other than Check Code) Lamp indication Check code Cause of trouble occurrence Operation Timer Ready — During test run Simultaneous flash Operation Timer Ready Disagreement cool/heat — (Automatic cool/heat setting to automatic cool/heat prohibited mode) Alternate flash - 38 -...
  • Page 39 - 39 -...

  • Page 40: Check Code List (Indoor)

    Check Code List 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 41 Error mode detected by outdoor unit Operation of diagnostic function Check code Judgment and measures Status of Cause of operation Condition air conditioner Indoor unit Disconnection, short of discharge temp. sensor 1. Check discharge temp. sensor (TD). Displayed when Stop (TD) error is detected 2.
  • Page 42 Operation of diagnostic function Check code Status of Judgment and measures Cause of operation air conditioner Condition Indoor unit Displayed when 1. Check outdoor P.C. board. Current detection circuit error Stop error is detected (AC current detection circuit) 1. Check open phase of 3-phase power supply. Displayed when Open phase of 3-phase power supply Stop...
  • Page 43 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 44: Diagnostic Procedure For Each Check Code (Indoor Unit)

    7-4. Diagnostic Procedure for Each Check Code (Indoor Unit) Check code [E01 error] Correct inter-unit cable Is inter-unit cable of A and B normal? of remote controller Is there no disconnection or Correct connection of connector. contact error of connector on harness Check circuit wiring.
  • Page 45 [E04 error] Is group address setup of Does outdoor operate? Check CODE No. [14]. remote controller correct? Are wiring in indoor unit and Correct wiring and 1, 2, 3 inter-unit cables correct? inter-unit cables. Correct wiring of connector Are wirings of terminal blocks and terminal blocks.
  • Page 46 [E18 error] Correct inter-unit cable Is inter-unit cable of remote controller. of A and B normal? Is there no disconnection Correct connection of connector. or contact error of connector on harness from terminal block Check circuit wiring. of indoor unit? Is group control operation? Check power connection status of indoor unit...
  • Page 47 [L20 error] Are wiring connections to communication lines Correct wiring connection. U3 and U4 normal? Is not the multiple same central Correct central control system address. control system addresses connected? Check central controller (including 1:1 model connection interface) and indoor P.C. board (MCC-1720). Defect →...
  • Page 48 [P10 error] Is connection of float switch connector Correct connection (Indoor control board CN34) of connector. normal? Does float switch work? Is circuit wiring normal? Check and correct wiring and wire circuit. Does drain pump work? Are connector pins 1 and 2 Is power of at drain pump unit side shorted drain pump turned on? ∗...
  • Page 49 [P12 error] Turn off the power. Is the static pressure setting correct? Correct setting of the static pressure. Change cappacity setting. Is the capacity setting correct? Are not there connections errors or Correct connection of connector. disconnection on connectors CN333 and CN334 of indoor unit P.C.
  • Page 50 [P19 error] Is operation of 4-way valve normal? Are 1.3 to 1.6kΩ applied to (Check the pipe temp., etc. Replace 4-way valve coil. resistance value of 4-way valve coil ? during cooling/heating operation. Defective Check outdoor P.C. board. Check outdoor P.C. board operation. Defective →...
  • Page 51 [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 Charqacteristics-2. Check indoor P.C. board (MCC-1720). Defect → Replace [F01 error] Is connection of TCJ sensor connector Correct connection of connector.
  • Page 52 [C06 error] (1:1 model connection interface) Are U3 and U4 communication lines normal? Correct communication line. ∗1 Correct connection of connector. Is connection of connector normal? ∗1 In case of 1:1 model connection interface 1:1 model connection interface (MCC-1440) CN51 and indoor P.C. board CN050. Check connection of A and B terminal blocks.
  • Page 53 [E03 error] (Master indoor unit) [E03 error] is detected when the indoor unit cannot receive a signal from the wired remote controller (also central controller). Check A and B remote controllers and communication lines of the central control system U3 and U4. As communication is impossible, this check code [E03] is not displayed on the wired remote controller and the central controller.

  • Page 54: Temperature Sensor

    Temperature sensor Temperature – Resistance value characteristic table TA, TC, TCJ sensors Representative value Resistance value (kΩ Ω Ω Ω Ω ) Temperature °F [°C] (Minimum value) (Standard value) (Maximum value) 32 [0] 32.33 33.80 35.30 50[10] 19.63 20.35 21.09 68[20] 12.23 12.59...

  • Page 55: Replacement Of Service P.c.board

    8. REPLACEMENT OF SERVICE P.C. BOARD <Note: when replacing the P.C. board for indoor unit servicing> The nonvolatile memory (hereafter called EEPROM, IC503) on the indoor unit P.C. board before replacement includes the model specific type information and capacity codes as the factory-set value and the important setting data which have been automatically or manually set when the indoor unit is installed, such as system/ indoor/group addresses, high ceiling select setting, etc.
  • Page 56 [1] Setting data read out from EEPROM (Stop the operation of the unit.) Step 1 Push [ Menu] to open the “Menu”. Step 2 Push and hold [ Menu] and [ ] at the same time to open “Field setting menu”. •...
  • Page 57 [2] P.C. Board for indoor unit servicing replacement procedures Step 1 Replace the P.C. board to the P.C. board for indoor unit servicing. At this time, perform the same setting of the jumper wire (J01, J08, J09) setting (cut), switch SW501, (short-circuit) connector CN34 as the setting of the P.C.
  • Page 58 [3] Writing the setting data to EEPROM The settings stored in the EEPROM of the P.C. board for indoor unit servicing are the factory-set values. Step 1 Push [ Menu] to open the “Menu”. Step 2 Push and hold [ Menu] and [ ] at the same time to open “Field setting menu”.
  • Page 59 <Fig. 2 EEPROM layout diagram> The EEPROM (IC503) is attached to the IC socket. When detaching the EEPROM, use a tweezers, etc. Be sure to attach the EEPROM by fitting its direction as shown in the figure. ∗ Do not bend the IC lead when replacing. EEPROM Cut out EEPROM...
  • Page 60 Table 1. Setting data (CODE No. table (example)) CODE No. (DN) Item Setting data Factory-set value 0001 Filter sign lighting time Depending on Type 0002 Filter pollution level 0000: standard 0003 Central control address 0099: Not determined 0006 Heating suction temperature shift Depending on Type 000F Cooling only...

  • Page 61: Setup At Local Site And Others

    9. SETUP AT LOCAL SITE AND OTHERS 9-1. Indoor Unit 9-1-1. Test Run Setup on Remote Controller <Wired remote controller> Push [ Menu] to open the “Menu” Push and hold [ Menu] and [ ] at the same time to open “Field setting menu” →...
  • Page 62 <Wireless remote controller> In case of wireless remote controller Turn on the power of the air conditioner. When power is turned on for the first time after installation, it takes approx. 5 minutes until the remote controller becomes available. In the case of subsequent power-on, it takes approx. 1 minute until the remote controller becomes available.

  • Page 63: Forced Defrost Setup Of Remote Controller (For Wired Remote Controller Only)

    9-1-2. Forced Defrost Setup of Remote Controller (For wired remote controller only) (Preparation in advance) Forced Defrost Setup Push the [ MENU] button to display the menu screen. Push and hold the [ MENU] button and the [ ] button at the same time to display the “Field setting menu”.
  • Page 64 Item No. (DN) table (Selection of function) Item Description At shipment Filter sign lighting time} 0000 : None 0002 : 2500H 0002 : 2500H (4-Way/Duct/Ceiling Type) Dirty state of filter 0000 : Standard 0001 : High degree of dirt 0000 : Standard (Half of standard time) Central control address 0001 : No.1 unit...
  • Page 65 Item Description At shipment High ceiling selection According to capacity (External static pressure type <Concealed Duct type> selection) HB121 - 241 Set data 0000 0001 0002 0003 0004 0005 0006 .12 in WG .26 in WG .20 in WG .40 in WG .32 in WG .48 in WG .60 in WG External static pressure (Factory...
  • Page 66 9-1-5. Cabling and Setting of Remote Controller Control 2-remote controller control <Wireless remote controller> (Controlled by 2 remote controllers) Remote controller address (A-B selection) This control is to operate 1 or multiple indoor units setting are controlled by 2 remote controllers. •...
  • Page 67 Set the remote controller as ”Header remote controller (Master)” or “Follower remote controller (Sub)” when the dual remote controller system is used. Carry out the setting operation while the indoor unit is stopped. (Turn off the air conditioning unit before starting the setting operation.) In the “Initial setting”...
  • Page 68 <Wireless remote controller A-B selection> Using 2 wireless remote controllers for the respective air conditioners, when the 2 air conditioners are closely installed. Wireless remote controller B setup 1. Press RESET button on the indoor unit to turn the air conditioner ON.

  • Page 69: Monitor Function Of Remote Controller Switch

    9-1-6. Monitor Function of Remote Controller Switch Calling of sensor temperature display The sensor temperature or operational status of indoor unit, outdoor unit, or remote controller can be monitored. Indoor unit data Outdoor unit data Code Data name Code Data name Room temperature (remote controller) Outdoor unit heat exchanger (coil) temperature (TE)
  • Page 70 (Group control operation) In a group control, operation of maximum 16 indoor units can be controlled by a remote controller. The indoor unit connected with outdoor unit (Individual) controls room temperature according to setting on the remote controller. <System example> Header 16-1 Max.
  • Page 71 Indoor unit power-ON sequence • The unit without power feed waits entirely → Waiting status is released by system start Power ON • Reboot when power is fed on the way <By indoor unit which receives power feed from outdoor unit> <Automatic address judgment>...

  • Page 72: How To Set Up Central Control Address Number

    9-2. How to Set up Central Control Address Number When connecting the indoor unit to the central control remote controller using it is necessary to set up the central control address number. • The central control address number is displayed as the line No. of the central control remote controller. How to set up from indoor unit side by remote controller <Procedure>...

  • Page 73: Address Setup

    10. ADDRESS SETUP 10-1. Address Setup <Address setup procedure> When an outdoor unit and an indoor unit are connected and they are twin-triple, 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 74: 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 = Header unit in group control 2 = Follower unit in group control Header unit (= 1) : The representative of multiple indoor units in group operation sends/receives signals to/ from the remote controllers and follower indoor units.

  • Page 75: Address Setup (Manual Setting From Remote Controller)

    10-3. Add Setup (Manual address setting using the remote controller) In case that addresses of the indoor units will be determined prior to piping work after wiring work • Set an indoor unit per a remote controller. • Turn on power supply. Menu(1/3) 6.Setting louver position 7.Setting timer operation mode...
  • Page 76 <Indoor unit address> To set the data of Indoor unit address, push [ Set/Fix]. Push [ ] to black highlight the code (DN), and then push [ ] and [ ] to set the code number to 13. Push [ ] to black highlight the data, and then push [ ] and [ ] to set a Indoor unit...

  • Page 77: Confirmation Of Indoor Unit No. Position

    10-4. Confirmation of Indoor Unit No. Position Procedure to know the position of indoor unit body by address while indoor unit No. is known. • Confirm each indoor unit address while indoor unit is stopped. (Be sure to stop air conditioner.) 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 78: Detachments

    NOTE In a section 10, Detachments, the models are expressed as follows for convenience. 12 Types : RAV-HB121BTP-UL 18 Types : RAV-HB181BTP-UL 24 Types : RAV-HB241BTP-UL 30 Types : RAV-HB301BTP-UL...
  • Page 79 Part name Procedure Remarks Suction panel 1. Detachment 1) Remove the fixing screws A which fix the suction panel. Loosen the fixing screws B. 2) Slide the suction panel to the arrow side and then remove the panel. 2. Attachment 1) Hook the suction panel to the fixing screws B and tighten screws.
  • Page 80 Remarks Part name Procedure Electric parts 1. Detachment 1) Perform works of 1 of ( In case of under air i ntake) Perform works of 1 of . (In case of back air intake) Perform works of 1 of . 2) Remove the indoor/outdoor connecting wire and remote controller wire from each terminal block.
  • Page 81 Part name Procedure Remarks Fan motor wiring Fan motor, 1. Detachment CN333 Fan, 1) Perform works until opening of the electric parts box cover in works of 1 of Fan case 2) Remove connectors for fan motor wiring from control P.C. board. CN333 : Motor power supply (5P: White) CN334 : Motor control (5P: White) 3) Open the fan case (under) and remove it...
  • Page 82 Part name Procedure Remarks Drain pan 1. Detachment 1) Remove the drain cap and then extract the Bottom base drain water accumulated in the drain pan. NOTE Do not hold the drain socket. When removing the drain cap, be sure to receive drain water using a bucket, etc.
  • Page 83 Part name Procedure Remarks 1. Detachment Heat : Screw position 1) Recover the refrigerant gas and then exchanger 12 Type remove the refrigerant pipe of the indoor unit. Heat exchanger End plate 2) Perform works of 1 of fixed plate 3) Pull out TC sensor and TCJ sensor wirings from the holder.

  • Page 84: Exploded Views And Parts List

    12. EXPLODED VIEWS AND PARTS LIST 12-1. Indoor Unit RAV-HB121BTP-UL - 84 -...
  • Page 85 Model name Location Part No. Description RAV-HB121BTP-UL 43T39356 FLANGE 43T44615 REFRIGERANT CYCLE ASSEMBLY 43T70319 ASM-HOSE-DRAIN 43T77303 PUMP ASSY 43T51312 SWITCH, FLOAT 43T22337 CASE, FAN, UPPER 43T22335 CASE, FAN, LOWER 43T20340 FAN, MULTI BLADE 43T39416 BAND-MOTOR-L 43T39415 BAND-MOTOR-R 43T21556 FAN-MOTOR(WDF-340W150AA1) 43T39417...
  • Page 86 RAV-HB181BTP-UL, RAV-HB241BTP-UL - 86 -...
  • Page 87 Model name Location Part No. Description RAV-HB181BTP-UL RAV-HB241BTP-UL 43T39357 FLANGE 43T44616 REFRIGERANT CYCLE ASSEMBLY 43T44871 ASM-REF 43T70319 ASM-HOSE-DRAIN 43T77303 PUMP ASSY 43T51312 SWITCH, FLOAT 43T22337 CASE, FAN, UPPER 43T22335 CASE, FAN, LOWER 43T20340 FAN, MULTI BLADE 43T39416 BAND-MOTOR-L 43T39415 BAND-MOTOR-R 43T21555 FAN-MOTOR(WDF-340W150AA) 43T39417...
  • Page 88 RAV-HB301BTP-UL, RAV-HB361BTP-UL, RAV-HB421BTP-UL, RAV-HB481BTP-UL - 88 -...
  • Page 89 Model name Location Part No. Description RAV-HB301BTP-UL RAV-HB361BTP-UL RAV-HB421BTP-UL RAV-HB481BTP-UL 43T39358 FLANGE 43T44617 REFRIGERANT CYCLE ASSEMBLY 43T70319 ASM-HOSE-DRAIN 43T77303 PUMP ASSY 43T51312 SWITCH, FLOAT 43T22338 CASE, FAN, UPPER 43T22336 CASE, FAN, LOWER 43T20339 FAN, MULTI BLADE 43T39416 BAND-MOTOR-L 43T39415 BAND-MOTOR-R 43T21549 FAN-MOTOR (LDF-340W250A) 43T39418...

  • Page 90: Electric Parts

    12-4. Electric parts CN104 IC501 IC503 SW501 CN333 RY01 CN309 CH-49-Z-T DB01 Lot No. Ｒ CN01 Model name Location RAV-HB Part No. Description 121BTP-UL 181BTP-UL 241BTP-UL 301BTP-UL 361BTP-UL 421BTP-UL 481BTP-UL 43T50420 TC-SENSOR (BLK) 43T50389 TA-SENSOR 43T58320 REACTOR 43T60402 TERMINAL:3P 43T60362 TERMINAL 43TNV579 PC BOARD ASSY (MCC-1720)

  • Page 91: Warnings On Refrigerant Leakage

    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 92 CARRIER AIR CONDITIONING (THAILAND) CO., LTD. 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANGPATHUMTHANI, PATHUMTHANI 12000, THAILAND...

This manual is also suitable for:

Rav-hb181btp-ulRav-hb241btp-ulRav-hb301btp-ulRav-hb361btp-ulRav-hb421btp-ulRav-hb481btp-ul

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