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Toshiba RAV-SM2242DT-E Service Manual
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Toshiba RAV-SM2242DT-E Service Manual

Toshiba RAV-SM2242DT-E Service Manual

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SERVICE MANUAL

INDOOR UNIT <DIGITAL INVERTER>
RAV-SM2242DT-E
RAV-SM2802DT-E
RAV-SM2242DT-TR
RAV-SM2802DT-TR
R410A
FILE NO. A10-001
Revised: May, 2010
SPLIT TYPE
PRINTED IN JAPAN, Apr., 2010 ToMo

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Summary of Contents for Toshiba RAV-SM2242DT-E

  • Page 1: Service Manual

    FILE NO. A10-001 Revised: May, 2010 SERVICE MANUAL SPLIT TYPE INDOOR UNIT <DIGITAL INVERTER> RAV-SM2242DT-E RAV-SM2802DT-E RAV-SM2242DT-TR RAV-SM2802DT-TR R410A PRINTED IN JAPAN, Apr., 2010 ToMo...

  • Page 2: Table Of Contents

    CONTENTS ORIGINAL INSTRUCTION................. 3 WARNING INDICATIONS ON THE AIR CONDITIONER UNIT......5 PRECAUTION FOR SAFETY ................6 NEW REFRIGERANT (R410A) ................ 11 1. SPECIFICATIONS ..................13 1-1. Indoor Unit......................13 2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)........15 2-1. Indoor Unit......................15 3.

  • Page 3: Original Instruction

    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 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 [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 6: Precaution For Safety

    Precaution for Safety 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 7 Even if the circuit breaker has been set to the OFF position before the service panel is removed and the electrical parts are repaired, you will still risk receiving an electric shock. For this reason, short-circuit the high-voltage capacitor terminals to discharge the voltage before proceeding with the repair work.
  • Page 8 The refrigerant used by this air conditioner is the R410A. Check the used refrigerant name and use tools and materials of the parts which match with it. For the products which use R410A refrigerant, the refrigerant name is indicated at a position on the outdoor unit where is easy to see.
  • Page 9 Once the repair work has been completed, check for refrigerant leaks, and check the insulation resistance and water drainage. Then perform a trial run to check that the air conditioner is running properly. After repair work has finished, check there is no trouble. If check is not executed, a fire, electric shock or injury may be caused.
  • Page 10 Toshiba Carrier Corporation 336 Tadehara, Fuji-shi, Shizuoka-ken 416-8521 JAPAN Authorized Nick Ball Representative/TCF holder: Toshiba EMEA Engineering Director Toshiba Carrier UK Ltd. Porsham Close, Belliver Industrial Estate, PLYMOUTH, Devon, PL6 7DB. United Kingdom Hereby declares that the machinery described below:...

  • Page 11: New Refrigerant (R410A)

    New Refrigerant (R410A) This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer. 1. Safety Caution Concerned to New Refrigerant The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed.
  • Page 12 4. Tools 1. Required Tools for R410A 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 R410A (Those which cannot be used for conventional refrigerant (R22)) 2) Tools exclusive for R410A, but can be also used for conventional refrigerant (R22) 3) Tools commonly used for R410A and for conventional refrigerant (R22) The table below shows the tools exclusive for R410A and their interchangeability.

  • Page 13: Specifications

    1. SPECIFICATIONS 1-1. Indoor Unit 1-1-1. Concealed Duct High static pressure Type Indoor unit RAV-SM2242DT-E RAV-SM2802DT-E Model Outdoor unit RAV-SM2242AT8-E RAV-SM2802AT8-E Cooling capacity (kW) 20.0 23.0 Heating capacity (kW) 22.4 27.0 Power supply 1 phase 220-240V~ 50Hz Running current 5.25 – 4.81 5.25 –...
  • Page 14 1-1-1. Concealed Duct High static pressure Type (Contined) Indoor unit RAV-SM2242DT-TR RAV-SM2802DT-TR Model Outdoor unit RAV-SM2244AT8-E RAV-SM2804AT8-E Cooling capacity (kW) 20.0 23.0 Heating capacity (kW) 22.4 27.0 Power supply 1 phase 220-240V~ 50Hz Running current 5.25 – 4.81 5.25 – 4.81 Indoor unit Power consumption (kW)

  • Page 15: Construction Views (External Views)

    2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) 2-1. Indoor Unit RAV-SM2242DT-E, RAV-SM2802DT-E / RAV-SM2242DT-TR, RAV-SM2802DT-TR – 15 –...

  • Page 16: Systematic Refrigerating Cycle Diagram

    3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM 3-1. Indoor Unit RAV-SM2242DT-E, RAV-SM2802DT-E RAV-SM2242DT-TR, RAV-SM2802DT-TR Distributor Indoor unit (Strainer TCJ sensor incorporated) Air heat exchanger TC sensor Refrigerant pipe Refrigerant pipe at liquid side ØB at gas side ØA Heating To outdoor unit...

  • Page 17: Wiring Diagram

    4. WIRING DIAGRAM 4-1. Indoor Unit RAV-SM2242DT-E, RAV-SM2802DT-E RAV-SM2242DT-TR, RAV-SM2802DT-TR – 17 –...

  • Page 18: Fan Characteristics

    4-2. Fan Characteristics Current value as a criterion, adjust the air volume value to become within the range of the chart below.] < RAV-SM2242 type > Standard air volume: 3600m³/h High static pressure tap (50Hz) Medium static pressure tap (50Hz) Low static pressure tap (50Hz) High static pressure tap (50Hz) Medium static pressure tap (50Hz)
  • Page 19 < RAV-SM2802 type > Standard air volume: 4200m³/h High static pressure tap (50Hz) Medium static pressure tap (50Hz) Low static pressure tap (50Hz) High static pressure tap (50Hz) Medium static pressure tap (50Hz) Low static pressure tap (50Hz) 3200 3400 3800 4200 4600...
  • Page 20 n Wire connection change of fan motor This duct is composed of 3 fan motors. To change external static pressure by duct resistance, connect the 3 connectors of the orange lead wires that are connected to the underside of the fan tap changing terminal block to the same number (F1, F2 or F3) terminal.

  • Page 21: Specifications Of Electrical Parts

    5. SPECIFICATIONS OF ELECTRICAL PARTS 5-1. Indoor Unit RAV-SM2242DT-E, RAV-SM2802DT-E RAV-SM2242DT-TR, RAV-SM2802DT-TR Parts name Type Specifications Fan motor STF-200-370-4AR Output (Rated) 370 W TA sensor Lead wire length : 818mm 10 kΩ at 25°C TC sensor Ø6 size lead wire length : 2000mm Vinyl tube (Black) 10 kΩ...

  • Page 22: Indoor Control Circuit

    6. INDOOR CONTROL CIRCUIT 6-1. Indoor Controller Block Diagram RAV-SM2242DT-E, RAV-SM2802DT-E / RAV-SM2242DT-TR, RAV-SM2802DT-TR 6-1-1. Connection of Wired (Simple) Remote Controller Wired (Simple) Master remote controller Schedule timer (Max. 2 units) Function Display part Display part Driver setup Display part...

  • Page 23: 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 distinguished and the control is selected according to the distinguished result. Operation 1) Based on the operation mode selecting command from the mode selection remote controller, the operation mode is selected.
  • Page 24 Item Outline of specifications Remarks Room temp. 1) Adjustment range: Remote controller setup temperature (°C) control COOL HEAT AUTO Wired type 18 to 29 18 to 29 18 to 29 2) Using the Item code 06, the setup temperature in heating Shift of suction operation can be corrected.
  • Page 25 Item Outline of specifications Remarks Automatic cooling/ 1) The judgment of selecting COOL/HEAT is carried out heating control as shown below. When exceeding +1.5 against Tsh Tsc: Setup temp. in 10 minutes and after thermo.-OFF, heating operation cooling operation (Thermo. OFF) exchanges to cooling operation. Tsh: Setup temp.
  • Page 26 Item Outline of specifications Remarks Freeze preventive control 1) The cooling operation is performed as follows Tc, Tcj: (Low temperature release) based on the detected temperature of Tc sensor or Indoor heat exchanger 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 27 Item Outline of specifications Remarks High-temp. release 1) The heating operation is performed as follows based control on the detected temperature of Tc sensor or Tcj sensor. • When [M] zone is detected, the commanded frequency is decreased from the real operation frequency. After then the commanded frequency changes every 30 seconds while operation is performed in [M] zone.
  • Page 28 Item Outline of specifications Remarks Frequency fixed <In case of wired remote controller> Approx. command operation frequency [S7] 1) When pushing [CHK] button for 4 seconds or more, (Test run) [TEST] is displayed on the display screen and the mode enters in Test run mode. 2) Push [ON/OFF] button.
  • Page 29 Item Outline of specifications Remarks Save operation 1) When selecting [AUTO] mode, the save operation is enabled. (By connected 2) Shift (Correct) the setup temperature from input values of the outdoor unit) every sensor in the range of not spoiling comfortable ability. 3) The input values mean the room temperature Ta, outside temperature To, air volume, and indoor heat exchanger sensor temperature Tc.

  • Page 30: Indoor Print Circuit Board

    6-3. Indoor Print Circuit Board <MCC-1403> – 30 –...
  • Page 31 6-3-1. Optional Connector Specifications of Indoor P.C. Board Connector Function Specifications Remarks Setting at shipment: Interlock of ON by indoor unit operation, with DC12V OFF by stop operation Ventilation output CN32 Output ∗ The single operation setting by FAN button on the remote controller (Open collector) is performed on the remote controller (DN [31] = 0000 →...

  • Page 32: Indoor Unit Troubleshooting

    7. INDOOR UNIT TROUBLESHOOTING 7-1. 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 33 Main remote controller (RBC-AMT32E) How to read check monitor display <7-segment display> n Confirmation and check Procedure When pushing TEST buttons at the same time When an error occurred in the air conditioner, an for 4 seconds or more, the following display appears. error code and indoor UNIT No.
  • Page 34 n Remote controller switch monitoring function This function is available to call the service Outdoor unit data monitor mode from the remote controller during a test run to acquire temperatures of sensors of the CODE No. Data name remote controller, indoor unit, and outdoor unit. Outdoor unit heat exchanger (coil) temperature (TE) Outside air temperature (TO)
  • Page 35 7-1-1. Check Code List (Indoor) (Indoor unit detected) Check code indication Air conditioner operation Representative defective position Explanation of error contents TCC-LINK central & Automatic Operation Remote controller reset continuation No communication from remote controller and network adapter × ¡ Regular communication error between indoor and remote controller (Also no communication from central control system) ×...

  • Page 36: Check Code List

    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 37: Error Mode Detected By Outdoor Unit

    Error mode detected by outdoor unit The check code has been ramified from 4 series and after The ramified check code is displayed only when both the indoor unit and the outdoor unit are 4 series and after. (Ex. Combination of RAV-SM1404UT-E with RAV-SM2804AT8-E) When the indoor unit is 3 series and before, the conventional check code is displayed.
  • Page 38 Operation of diagnostic function Check code Indoor unit Status of Judgment and measures Cause of operation Condition air conditioner before after 3 series 4 series Displayed when 1. Check outdoor P .C. board (MCC-1596). Current detection circuit error Stop error is detected (AC current detection circuit) 1.

  • Page 39: Error Mode Detected By Remote Controller Or Central Controller (Tcc-Link)

    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 40 7-1-2. 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 41 [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 42 [E18 error] Correct inter-unit cable Is inter-unit cable of A and B normal? of remote controller. Is there no disconnection or contact error of connector Correct connection of connector. Check circuit wiring. on harness from terminal block of indoor unit? Is group control operation? Check power Is power of all indoor units turned on?
  • Page 43 [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 network adapter) and indoor P.C. board (MCC-1403). Defect →...
  • Page 44 [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 3 Is power of at drain pump unit side shorted drain pump turned on? ∗...
  • Page 45 [P19 error] Is operation of 4-way valve normal? In heating mode, 4-way valve coil terminal 200V Is circuit wiring normal? Check 4-way valve. Check and correct circuit. Defective → Replace Is refrigerant flow by PMV normal? Check and replace PMV. Check CDB P.C.
  • Page 46 [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-1403). Defect → Replace [F01 error] Is connection of TCJ sensor connector Correct connection of connector.
  • Page 47 [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 48 [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 49 Temperature – Resistance value characteristic table Temperature sensor TA, TC, TCJ Representative value Resistance value (kΩ Ω Ω Ω Ω ) Temperature (°C) (Minimum value) (Standard value) (Maximum value) 32.33 33.80 35.30 19.63 20.35 21.09 12.23 12.59 12.95 9.75 10.00 10.25 7.764 7.990...

  • Page 50: Inspection Of Fan Motor

    Inspection of Fan Motor Part name Checking procedure Fan motor Measure the resistance value of each winding by using the tester. STF200–370–4AR Position Resistance value Fan motor inside wiring diagram Black – Red 12.1 Ω Black – White 12.4 Ω Black –...

  • Page 51: Replacement Of Service P.c. Board

    8. REPLACEMENT OF SERVICE P.C. BOARD 8-1. Indoort Unit <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 52 [1] Setting data read out from EEPROM The setting data modified on the site, other than factory-set value, stored in the EEPROM shall be read out. Step 1 Push TEST button on the remote controller simultaneously for more than 4 seconds. ∗...
  • Page 53 [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 TEST buttons on the remote controller simultaneously for more than 4 seconds. ∗...
  • Page 54 Table 1 Item Setting data Factory-set value Filter sign lighting time Depending on Type Filter pollution leve 0000: standard Central control address 0099: Not determined 0002: +2°C Heating suction temperature shift (flooring installation type: 0) Cooling only 0000: Heat pump Type Depending on model type Indoor unit capacity...

  • Page 55: 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> TEST 1. When pushing button on the remote controller for 4 seconds or more, “TEST” is displayed on LC display. Then push ON / OFF button.
  • Page 56 9-1-3. LED Display on Indoor P.C. Board 1. D002 (Red) • Goes on at the same time when power was turned on (Main microcomputer operates and goes on.) • Flashes with 1-second interval (every 500ms): When EEPROM is not provided or writing was an error. •...
  • Page 57 Function selection item No. (DN) list Item Contents At shipment from factory 0000:None 0001: 150H Filter sign lighting time 0002:2500H 0003: 5000H According to type 0004:10000H 0005: Clogging sensor used 0001:No.1 unit 0064: No.64 unit Central control address 0099:Undecided 0099:Undecided 0000:No shift 0001: +1°C 0002:+2°C...
  • Page 58 9-1-5. Wiring and Setting of Remote Controller Control 2-remote controller control (Setup method) (Controlled by 2 remote controllers) One or multiple indoor units are controlled by 2 remote controllers. This control is to operate 1 or multiple indoor units (Max. 2 remote controllers are connectable.) are operated by 2 remote controllers.
  • Page 59 9-1-6. 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> TEST Push buttons simultaneously for 4 seconds to call the service monitor mode.

  • Page 60: Calling Of Error History

    n Calling of error history <Contents> The error contents in the past can be called. <Procedure> TEMP. ON / OFF TEST Push buttons simultaneously for 4 seconds or more to call the service check mode. TIMER SET MODE Service Check goes on, the CODE No. 01 is displayed, and TIME SAVE VENT...
  • Page 61 n 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 62: Indoor Unit

    9-2. Setup at Local Site / Others Model name: TCB-PCNT30TLE2 9-2-1. 1:1 Model Connection Interface 1. Function This model is an optional P .C. board to connect the indoor unit to 1:1 model connection interface. 2. Microprocessor block diagram Indoor unit Central controller 1:1 model connection interface CN40...

  • Page 63: Wiring Specifications

    4. Wiring specifications • Use 2-core with no polar wire. • Match the length of wire to wire length of the central No. of wires Size control system. If mixed in the SMMS system, the wire length is lengthened Up to 1000m: twisted wire 1.25mm Up to 2000m: twisted wire 2.0mm with all indoor/outdoor inter-unit wire length at side.

  • Page 64: How To Set Up Central Control Address Number

    6. External view of P.C. board assembly Terminator (SW01) 7. Address setup In addition to set up the central control address, it is necessary to change the indoor unit number. (Line/Indoor/Group address). For details, refer to 1:1 model connection interface Installation Manual. 9-3.
  • Page 65 How to confirm the central control address (New function for AMT32E remote controller) <Procedure> It can be confirmed even during operation or stopping. UNIT LOUVER Push button for 4 seconds or more. ò In the frame at left side of the remote controller screen, the lighting set contents are displayed.

  • Page 66: 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 67: 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 68 10-2-2. Automatic Address Example from Unset Address (No miswiring) 1. Standard (One outdoor unit) 1) Single (Header/Master) Individual Only turning on source power supply (Automatic completion) 2. Group operation (Multiple outdoor units = Multiple indoor units with serial communication only, without twin) Header/Sub Header/Sub Header/Master...

  • Page 69: Address Setup (Manual Setting From Remote Controller)

    10-3. Address Setup (Manual Setting from Remote Controller) In case that addresses of the indoor units will be determined prior to piping work after cabling work (Example of 2-lines cabling) • Set an indoor unit per a remote controller. (Real line: Cabling, Broken line: Refrigerant pipe) •...

  • Page 70: Indoor Unit

    n Confirmation of indoor unit No. position 1. To know the indoor unit addresses though position of the indoor unit body is recognized • In case of individual operation (Wired remote controller : indoor unit = 1 : 1) (Follow to the procedure during operation) <Procedure>...
  • Page 71 • The qualified installer who is allowed to work at heights has been trained in matters relating to working ADVANCED SETTINGS ....................15 at heights with the air conditioners made by 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 ENERGY SAVING RECOMMENDATIONS ..............

  • Page 72: Precautions For Safety

    Owner’s Manual Owner’s Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure PRECAUTIONS FOR SAFETY n Warning Indications on the Air Conditioner Unit Warning indication Description WARNING General • Carefully read Owner’s Manual before starting the air conditioner. WARNING There are many important things to keep in mind for daily operation.
  • Page 73 Owner’s Manual Owner’s Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure n Information on the Transportation, Handling and Storage of the Carton Relocation • When the air conditioner is to be relocated, do not relocate it yourself but contact a qualified installer or a qualified service person.

  • Page 74: Part Names

    Owner’s Manual Owner’s Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure PART NAMES WIRED REMOTE CONTROLLER n Indoor unit This remote controller can control the operation of up to 8 indoor units. n Display section Air discharge Connect a discharge duct.

  • Page 75: Operation Section

    Owner’s Manual Owner’s Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure n Operation section Push each button to select a desired operation. • The control saves commands in memory and after the initial setting, there is no need for any additional settings unless changes are desired.

  • Page 76: Correct Usage

    Owner’s Manual Owner’s Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure CORRECT USAGE n 8°C OPERATION (For object pre-heating) (Available for Super Digital Inverter outdoor units) • When you use the air conditioner for the first time or when you change the setting, follow the steps below. Settings are The air conditioner can control the heating temperature to about 8°C in the heating mode.

  • Page 77: Timer Operation

    Owner’s Manual Owner’s Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure TIMER OPERATION POWER SAVING MODE • Three timer modes are available: (Setting of up to 168 hours is enabled.) • The power saving mode saves energy by limiting the maximum current which will effect heating or cooling capacity that the unit can generate.

  • Page 78: Advanced Settings

    Owner’s Manual Owner’s Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure ADVANCED SETTINGS ENERGY SAVING RECOMMENDATIONS n Power saving mode Select a comfortable set point and minimize adjusting it. • Clean the filter when ever the filter display is illuminated on remote controller.

  • Page 79: Maintenance

    Owner’s Manual Owner’s Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure MAINTENANCE Maintenance List Part Unit Check (visual/auditory) Maintenance WARNING Heat exchanger Indoor/outdoor • Dust/dirt clogging, scratches • Wash the heat exchanger when it is clogged. Cleaning the air filter and other parts of the air filter involves dangerous work in high places, so be sure to have a qualified installer or qualified service person to do it.

  • Page 80: Air Conditioner Operations And Performance

    Owner’s Manual Owner’s Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure AIR CONDITIONER OPERATIONS AND INSTALLATION PERFORMANCE Do not install the air conditioner in the following places • Do not install the air conditioner in any place within 1 m from a TV, stereo, or radio set. 3 minutes protection function If the unit is installed in such place, noise transmitted from the air conditioner affects the operation of these appliances.

  • Page 81: Troubleshooting

    Recheck Authorized Nick Ball Inoperative Representative/TCF holder: Toshiba EMEA Engineering Director • The main power switch is turned off. Toshiba Carrier UK Ltd. • The circuit breaker is activated to cut off power supply. Porsham Close, Belliver Industrial Estate, •...

  • Page 82: Acquainted With The Knowledge Related To This Work

    PRECAUTIONS FOR SAFETY ..................5 He or she has been trained to install, maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such operations by an individual or ACCESSORY PARTS ......................
  • Page 83 Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure n Warning Indications on the Air Conditioner Unit Definition of Protective Gear When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves and ‘safety’ work clothing.

  • Page 84: Precautions For Safety

    Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure PRECAUTIONS FOR SAFETY Refrigerant piping • Install the refrigerant pipe securely during the installation work before operating the air conditioner. If the compressor is operated with the valve open and without refrigerant pipe, the compressor sucks air and the refrigeration cycles is over pressurized, which may cause a injury.

  • Page 85: Accessory Parts

    Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure ACCESSORY PARTS CAUTION New Refrigerant Air Conditioner Installation Part name Q’ty Shape Usage • THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT DESTROY OZONE LAYER.

  • Page 86: Selection Of Installation Place

    Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure SELECTION OF INSTALLATION PLACE n Installation space (Unit: mm) Reserve space required for maintenance the indoor unit and service work. Upon approval of the customer, install the air conditioner in a place that satisfies the following conditions.

  • Page 87: Installation

    Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure INSTALLATION n Installation of hanging bolt n Installation of indoor unit • Consider the piping/wiring after the unit is hung when Treatment of ceiling determining the location of the indoor unit installation WARNING The ceiling differs according to structure of building.

  • Page 88: Duct Design

    Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure n Diagrams for making connecting flanges n Duct design (Unit: mm) The connecting flange (Incl. the fixing screw) is not supplied to the indoor unit. 1. In order to prevent short circuits, design the duct installation, so that the intake and discharge openings are not adjacent to each other.

  • Page 89: Fan Characteristics

    Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure FAN CHARACTERISTICS Current value as a criterion, adjust the air volume value to become within the range of the chart below. <RAV-SM2242 Type> <RAV-SM2802 Type> Standard air volume: 3600m³/h Standard air volume: 4200m³/h High static pressure tap (50Hz) High static pressure tap (50Hz)

  • Page 90: Drain Piping Work

    Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure DRAIN PIPING WORK n Wire connection change of fan motor This duct is composed of 3 fan motors. CAUTION To change external static pressure by duct resistance, connect the 3 connectors of the orange lead wires that are connected to the underside of the fan tap changing terminal block to the same number (F1, F2 or F3) terminal.
  • Page 91 Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure n Pipe material, size and insulator n Check the draining The following materials for piping work and insulating process are procured locally. Check if the water can flow out properly during the test run. Also, check if no water leakage from the piping connection port. Hard vinyl chloride pipe socket for VP25 REQUIREMENT Pipe material...

  • Page 92: Refrigerant Piping And Evacuating

    Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure REFRIGERANT PIPING AND EVACUATING n Heat insulating process • After drain check, covering the heat insulator for drain connecting section, wrap the drain pipe with heat insulator n Refrigerant Piping n Liquid side refrigerant pipe (Locally procured) without clearance from the end of the drain pipe connecting port of the indoor unit.
  • Page 93 Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure n Gas side refrigerant pipe Tightening connection Refrigerant amount to be added Heat insulation process connection For addition of the refrigerant, add refrigerant “R410A” Apply heat insulation for the pipes separately at liquid CAUTION referring to the attached Installation Manual of outdoor unit.

  • Page 94: Electrical Connection

    Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure ELECTRICAL CONNECTION n Wire connection WARNING Remote controller wiring REQUIREMENT 2-core non polarity wire is used for the remote controller • Be sure to connect the wires matching the terminal numbers. Incorrect connection causes a trouble. 1.

  • Page 95: Applicable Controls

    Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure APPLICABLE CONTROLS Group control (Unit: mm) Wired remote controller Procedure REQUIREMENT R (L) S (N) Push button and TEMP. button simultaneously for • When you use this air conditioner for the first time, it takes at least 4 seconds.

  • Page 96: Filter Sign Setting

    Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure n Power saving mode n Remote controller switch monitoring function Procedure When settings have been completed, push button to determine the settings. 1. Push button for at least four seconds when the This function is available to call the service monitor mode from the remote controller during a test run to acquire When button is pushed, “SETTING”...

  • Page 97: Group Control

    Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure n Group control Procedure example 1 Procedure 1. Using TEMP. buttons, specify CODE No. Manual address setup procedure [12]. (CODE No. [12]: Line address) Group control for system of multiple units While the operation stops, change the setup.
  • Page 98 Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure n 8°C Operation Procedure To recognize the position of the corresponding indoor unit though the If there is other indoor unit to be changed, repeat procedure to change the setup.

  • Page 99: Test Run

    Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure TEST RUN MAINTENANCE n Before test run Procedure CAUTION Keep button pushed for 4 seconds or more. When connecting a return air duct to the unit, the cleaning method of the air filter differs according •...

  • Page 100: Troubleshooting

    Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure TROUBLESHOOTING Maintenance List Part Unit Check (visual/auditory) Maintenance n Confirmation and check n Confirmation of error log • Dust/dirt clogging, Heat exchanger Indoor/outdoor • Wash the heat exchanger when it is clogged. scratches When an error occurred in the air conditioner, an error When an error occurred on the air conditioner, the error log...
  • Page 101 Installation Manual Installation Manual Concealed Duct High Static Pressure Concealed Duct High Static Pressure n Error codes and parts to be checked Wired remote Wired remote controller controller Judging Judging Main defective parts Parts to be checked / error description Main defective parts Parts to be checked / error description display...
  • Page 102 Revised: May, 2010 13. DETACHMENTS 13-1. Indoor Unit REQUIREMENT • At the service replacing time of the heat exchanger, the following tools are necessary. Prepare them before the service work. • Necessary tools: Plus screwdriver, monkey wrench, spanner, etc CAUTION •...
  • Page 103 Part name Work procedure Remarks <Fan/Fan case> assembly 1) Take off screws (2 positions) of the electric (Continued) parts box cover. 2) Remove the electric parts box cover. 3) Cut the bundling band (3 positions) which binds the fan motor lead wires. 4) Remove yellow (F1), blue (F2) and orange (F3) Faston terminals of the fan motor lead wires.
  • Page 104 Part name Work procedure Remarks 12) Take off screws (Arrow mark indicating assembly position) of the fan assembly. Screws Screws Screws (M5 screw × 3 positions) (Continued) 13) Pull out the fan assembly (two fans) toward you. ∗ Status when all the fan assemblies are pulled out ∗ Pull out it toward you.
  • Page 105 Part name Work procedure Remarks <Fan motor> assembly 1) Take off screws (Arrow mark indicating 1) 1) (Continued) position) of the tightening band and then remove the tightening band, the fixing bracket and the fan motor. 2) Cut the bundling band (2 positions) that fix the protective tube (white) on the relay connector of the fan motor.
  • Page 106 14. EXPLODED VIEWS AND PARTS LIST 14-1. Indoor Unit 204, 205 206, 207 Model Name RAV-SM Location Part No. Description 2242DT-E 2802DT-E 2242DT-TR 2802DT-TR 4312C023 Motor, Fan 43122106 Case, Fan 43120237 43139154 Band, Motor, Left 43139155 Band, Motor, Right 431S8155 Owner’s Manual 431S8156 Owner’s Manual...
  • Page 107 215, 216, 217 Model Name RAV-SM Location Part No. Description 2242DT-E 2802DT-E 2242DT-TR 2802DT-TR 4314J446 Evaporator Ass’y 4314Q091 Distributor Ass’y 43047688 Nut, Flare, 1/2 IN 43149332 Socket 43147195 Bonnet, 1/2 IN 43019904 Holder, Sensor 43147726 Strainer – 107 –...
  • Page 108 Model Name RAV-SM Location Part No. Description 2242DT-E 2802DT-E 2242DT-TR 2802DT-TR 43155165 Capacitor, 12MF, 450VAC 43050425 Sensor Ass’y, Service, TC 43050426 Sensor, Service, TA 43154141 Relay, LY2F-L, AC230V 43158204 Transformer, TT-13 (AC220–240V) 43160565 Terminal Block, 3P , 20A, AC250V 43160575 Terminal Block, 2P , 20A, AC300V 43060859 Fuse Block, 30A, 250V...
  • Page 109 WARNINGS ON REFRIGERANT LEAKAGE Check of Concentration Limit Important 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 NOTE 2 : not exceed a set limit. The standards for minimum room volume are as follows.
  • Page 110 TOSHIBA CARRIER CORPORATION 23-17, TAKANAWA 3 CHOME, MINATOKU, TOKYO, 108-8580, JAPAN Copyright © 1999 to 2010 TOSHIBA CARRIER CORPORATION, ALL Rights Reserved.

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