Toshiba RAV-SM2246AT8J-E Service Manual
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Toshiba RAV-SM2246AT8J-E Service Manual

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SERVICE MANUAL
AIR-CONDITIONER
OUTDOOR UNIT
<DIGITAL INVERTER>
RAV-SM2246AT8-E
RAV-SM2806AT8-E
RAV-SM2246AT8-TR
RAV-SM2806AT8-TR
R410A
SPLIT TYPE
RAV-SM2246AT8J-E
RAV-SM2806AT8J-E
PRINTED IN JAPAN, Mar., 2017, TOMO
FILE No. A10-1701

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Summary of Contents for Toshiba RAV-SM2246AT8J-E

  • Page 1 FILE No. A10-1701 SERVICE MANUAL AIR-CONDITIONER SPLIT TYPE OUTDOOR UNIT <DIGITAL INVERTER> RAV-SM2246AT8-E RAV-SM2246AT8J-E RAV-SM2806AT8-E RAV-SM2806AT8J-E RAV-SM2246AT8-TR RAV-SM2806AT8-TR R410A PRINTED IN JAPAN, Mar., 2017, TOMO...

  • Page 2: Table Of Contents

    CONTENTS PRECAUTION FOR SAFETY ............. 6 1. SPECIFICATIONS................ 17 1-1. Indoor Unit .......................... 17 1-1-1. 4-Way Cassette Type ......................17 1-1-2. Compact 4-Way Cassette Type ................... 18 1-1-3. Duct Type ..........................19 1-1-4. Slim Duct Type ........................20 1-1-5. Ceiling Type .......................... 21 1-1-6.
  • Page 3 10. ADDRESS SETUP ..............99 10-1. Address Setup Procedure ....................99 10-2. Address Setup & Group Control ................... 100 10-3. Remote Controller Wiring ....................103 10-4. Address Setup (Manual setting from remote controller) ..........104 10-5. Confirmation of Indoor Unit No. Position ..............105 11.
  • Page 4 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: Precaution For Safety

    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 Precaution for Safety The appliance shall be installed in accordance with national wiring regulations. Capacity shortages of the power circuit or an incomplete installation may cause an electric shock or fire. DANGER Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breaker to the OFF position.
  • Page 8 When you access inside of the electric cover to repair electric parts, wait for about five minutes after turning off the breaker. Do not start repairing immediately. Otherwise you may get electric shock by touching terminals of high-voltage capacitors. Natural discharge of the capacitor takes about five minutes.
  • Page 9 When performing repairs using a gas burner, replace the refrigerant with nitrogen gas because the oil that coats the pipes may otherwise burn. When repairing the refrigerating cycle, take the following measures. 1) Be attentive to fire around the cycle. When using a gas stove, etc, be sure to put out fire before work;...
  • Page 10 When the refrigerant gas leaks, find up the leaked position and repair it surely. If the leaked position cannot be found up and the repair work is interrupted, pump-down and tighten the service valve, otherwise the refrigerant gas may leak into the room. The poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous.
  • Page 11 Only a qualified installer (∗1) or qualified service person (∗1) is allowed to install the air conditioner. If the air conditioner is installed by an unqualified individual, a fire, electric shocks, injury, water leakage, noise and/or vibration may result. Before starting to install the air conditioner, read carefully through the Installation Manual, and follow its instructions to install the air conditioner.
  • Page 12 (∗1) Refer to the “Definition of Qualified Installer or Qualified Service Person.” Declaration of Conformity Manufacturer: TOSHIBA CARRIER CORPORATION 336 Tadehara, Fuji-shi, Shizuoka-ken 416-8521 JAPAN TCF holder: TOSHIBA CARRIER EUROPE S.A.S Route de Thil 01120 Montluel FRANCE Hereby declares that the machinery described below: Generic Denomination: Air Conditioner Model/type:...
  • Page 13 Refrigerant R410A This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer. 1. Safety Caution Concerned to Refrigerant R410A 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 14 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 15 Combination Pattern (Indoor Unit / Outdoor Unit) <RAV-SM2246AT series> Single Concealed Duct High Static Pressure Type RAV-SM2244DTP-E Simultaneous twin Concealed 4-way cassette type Ceiling type duct type RAV-SM1104UTP-E ×2 RAV-SM1106BTP-E1 ×2 RAV-SM1108CTP-E ×2 Simultaneous triple Concealed 4-way cassette type Ceiling type High wall type duct type RAV-SM804UTP-E ×3...
  • Page 16 RAV-SM224AT series Branch kit Simultaneous twin RBC-TWP101E SM110 — SM110 Simultaneous triple RBC-TRP100E SM80 — SM80 — SM80 Simultaneous double twin RBC-DTWP101E SM56 — SM56 — SM56 — SM56 RAV-SM280AT series Branch kit Simultaneous twin RBC-TWP101E SM140 — SM140 Simultaneous triple RBC-TRP100E SM80 —...

  • Page 17: Specifications

    1. SPECIFICATIONS 1-1. Indoor Unit 1-1-1. 4-Way Cassette Type <Double twin type> Indoor unit 1 RAV-SM 564UTP-E 804UTP-E Indoor unit 2 RAV-SM 564UTP-E 804UTP-E Model Indoor unit 3 RAV-SM 564UTP-E 804UTP-E Indoor unit 4 RAV-SM 564UTP-E 804UTP-E Outdoor unit RAV-SM 2246AT8-E 2806AT8-E Cooling capacity...

  • Page 18: Compact 4-Way Cassette Type

    1-1-2. Compact 4-Way Cassette Type <Double twin type> Indoor unit 1 RAV-SM 567MUT-E Indoor unit 2 RAV-SM 567MUT-E Model Indoor unit 3 RAV-SM 567MUT-E Indoor unit 4 RAV-SM 567MUT-E Outdoor unit RAV-SM 2246AT8-E Cooling capacity (kW) 20.0 Heating capacity (kW) 22.4 Power supply 3phase 380-415V/50Hz...

  • Page 19: Duct Type

    1-1-3. Duct Type <Double twin type> Indoor unit 1 RAV-SM 566BTP-E1 806BTP-E1 Indoor unit 2 RAV-SM 566BTP-E1 806BTP-E1 Model Indoor unit 3 RAV-SM 566BTP-E1 806BTP-E1 Indoor unit 4 RAV-SM 566BTP-E1 806BTP-E1 Outdoor unit RAV-SM 2246AT8-E 2406AT8-E Cooling capacity (kW) 20.0 23.5 Heating capacity (kW)

  • Page 20: Slim Duct Type

    1-1-4. Slim Duct Type <Double twin type> Indoor unit 1 RAV-SM 564SDT-E Indoor unit 2 RAV-SM 564SDT-E Model Indoor unit 3 RAV-SM 564SDT-E Indoor unit 4 RAV-SM 564SDT-E Outdoor unit RAV-SM 2246AT8-E Cooling capacity (kW) 20.0 Heating capacity (kW) 22.4 Power supply 3phase 380-415V/50Hz Indoor unit...

  • Page 21: Ceiling Type

    1-1-5. Ceiling Type <Double twin type> Indoor unit 1 RAV-SM 568CTP-E 808CTP-E Indoor unit 2 RAV-SM 568CTP-E 808CTP-E Model Indoor unit 3 RAV-SM 568CTP-E 808CTP-E Indoor unit 4 RAV-SM 568CTP-E 808CTP-E Outdoor unit RAV-SM 2246AT8-E 2806AT8-E Cooling capacity (kW) 20.0 23.5 Heating capacity (kW)

  • Page 22: High Wall Type

    1-1-6. High Wall Type <Double twin type> Indoor unit 1 RAV-SM 566KRT-E 806KRT-E Indoor unit 2 RAV-SM 566KRT-E 806KRT-E Model Indoor unit 3 RAV-SM 566KRT-E 806KRT-E Indoor unit 4 RAV-SM 566KRT-E 806KRT-E Outdoor unit RAV-SM 2246AT8-E 2806AT8-E Cooling capacity (kW) 20.0 23.5 Heating capacity...

  • Page 23: 4-Way Cassette Type

    1-2-1. 4-Way Cassette Type <Triple type> Indoor unit 1 RAV-SM 804UTP-E 804UTP-E Indoor unit 2 RAV-SM 804UTP-E 804UTP-E Model Indoor unit 3 RAV-SM 804UTP-E 804UTP-E Outdoor unit RAV-SM 2246AT8-E 2806AT8-E Cooling capacity (kW) 20.0 23.5 Heating capacity (kW) 22.4 27.0 Power supply 3phase 380-415V/50Hz Indoor unit...

  • Page 24: Duct Type

    1-2-2. Duct Type <Triple type> Indoor unit 1 RAV-SM 806BTP-E1 806BTP-E1 Indoor unit 2 RAV-SM 806BTP-E1 806BTP-E1 Model Indoor unit 3 RAV-SM 806BTP-E1 806BTP-E1 Outdoor unit RAV-SM 2246AT8-E 2406AT8-E Cooling capacity (kW) 20.0 23.5 Heating capacity (kW) 22.4 27.0 Power supply 3phase 380-415V/50Hz Indoor unit Running current...

  • Page 25: Ceiling Type

    1-2-3. Ceiling Type <Triple type> Indoor unit 1 RAV-SM 808CTP-E 808CTP-E Indoor unit 2 RAV-SM 808CTP-E 808CTP-E Model Indoor unit 3 RAV-SM 808CTP-E 808CTP-E Outdoor unit RAV-SM 2246AT8-E 2806AT8-E Cooling capacity (kW) 20.0 23.5 Heating capacity (kW) 22.4 27.0 Power supply 3phase 380-415V/50Hz Indoor unit Running current...

  • Page 26: High Wall Type

    1-2-4. High Wall Type <Triple type> Indoor unit 1 RAV-SM 806KRT-E 806KRT-E Indoor unit 2 RAV-SM 806KRT-E 806KRT-E Model Indoor unit 3 RAV-SM 806KRT-E 806KRT-E Outdoor unit RAV-SM 2246AT8-E 2806AT8-E Cooling capacity (kW) 20.0 23.5 Heating capacity (kW) 22.4 27.0 Power supply 3phase 380-415V/50Hz Indoor unit...

  • Page 27: 4-Way Cassette Type

    1-3-1. 4-Way Cassette Type <Twin type> Indoor unit 1 RAV-SM 1104UTP-E 1404UPT-E Model Indoor unit 2 RAV-SM 1104UTP-E 1404UPT-E Outdoor unit RAV-SM 2246AT8-E 2806AT8-E Cooling capacity (kW) 20.0 23.5 Heating capacity (kW) 22.4 27.0 Power supply 3phase 380-415V/50Hz Indoor unit Running current 8.99-8.23 12.79-11.71...

  • Page 28: Duct Type

    1-3-2. Duct Type <Twin type> Indoor unit 1 RAV-SM 1106BTP-E1 1406BTP-E Model Indoor unit 2 RAV-SM 1106BTP-E1 1406BTP-E Outdoor unit RAV-SM 2246AT8-E 2806AT8-E Cooling capacity (kW) 20.0 23.5 Heating capacity (kW) 22.4 27.0 Power supply 3phase 380-415V/50Hz Indoor unit Running current 9.97-9.13 14.49-13.27 Power consumption...

  • Page 29: Ceiling Type

    1-3-3. Ceiling Type <Twin type> Indoor unit 1 RAV-SM 1108CTP-E 1408CTP-E Model Indoor unit 2 RAV-SM 1108CTP-E 1408CTP-E Outdoor unit RAV-SM 2246AT8-E 2406AT8-E Cooling capacity (kW) 20.0 23.5 Heating capacity (kW) 22.4 27.0 Power supply 3phase 380-415V/50Hz Indoor unit Running current 9.97-9.13 14.65-13.42 Power consumption...

  • Page 30: Concealed Duct High Static Pressure Type

    1-4. Concealed Duct High Static Pressure Type <Single type> Indoor unit1 RAV-SM 2244DTP-E 2804DTP-E Model Outdoor unit RAV-SM 2246AT8-E 2806AT8-E Cooling capacity (kW) 19.0 22.5 Heating capacity (kW) 22.4 27.0 Power supply 3phase 380-415V/50Hz Indoor unit Running current 9.47-8.67 13.04-11.94 Power consumption (kW) 5.86...

  • Page 31: Outdoor Unit

    1-5. Outdoor Unit Model Outdoor unit RAV-SM 2246AT8-E 2806AT8-E 3 phase 380-415 50Hz Power supply (Power exclusive to outdoor is required) Type Hermetic compressor Compressor Motor (kW) 5.60 5.60 Pole Refrigerant charged (kg) Refrigerant control Pulse motor valve Pipe Height Outdoor lower difference Outdoor Height...

  • Page 32: Operation Characteristic Curve

    1-6. Operation Characteristic Curve • Operation characteristic curve <Digital Inverter> <Cooling> <Heating> SM280 SM280 SM224 SM224 • Conditions • Conditions Indoor : DB27˚C/WB19˚C Indoor : DB20˚C outdoor : DB35˚C Outdoor : DB 7˚C/WB6˚C Indoor air flow:High Indoor air flow : High Pipe length : 7.5m Pipe length : 7.5m Comoressor speed (rps)

  • Page 33: Construction Views (External Views)

    2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) 2-1. Outdoor Unit – 33 –...
  • Page 34 RBC-DTWP101E (Simultaneous Double Twin) <Branch pipe> <Joint pipe> Inner diameter Outer diameter Ø C Ø25.4 Inner Inner diameter diameter Ø D Ø D Inner diameter Ø28.6 1 pc. Model Q’ty 25.4 15.9 Gas side 15.9 15.9 15.9 12.7 RBC-DTWP101E 12.7 Liquid side –...
  • Page 35 RBC-TRP100E (Simultaneous Triple) <Gas side> Header assembly Inner diameter Ø15.9 1 pc. <Liquid side> Branch pipe assembly Inner diameter Ø9.52 1 pc. Insulator Gas side socket Liquid side socket Outer diameter Ø25.4 Ø15.9 Ø12.7 Ø9.5 Ø6.4 Ø15.9 Ø25.4 Ø9.5 Ø12.7 (External (External (External...
  • Page 36 RBC-TWP101E (Simultaneous Twin) <Branch pipe> <Joint pipe> Inner diameter Outer diameter Ø C Ø25.4 Inner Inner diameter diameter Ø D Ø D Inner diameter Ø28.6 1 pc. Model Q’ty Gas side 25.4 15.9 RBC-TWP101E Liquid side 12.7 – 36 –...

  • Page 37: Outdoor Unit Refrigeranting Cycle Diagram

    3. OUTDOOR UNIT REFRIGERANTING CYCLE DIAGRAM – 37 –...
  • Page 38 Systematic diagram of refrigerating cycle RAV-SM224 series Pressure Pipe surface temperature (˚C) Compressor Indoor/outdoor indoor heat Outdoor heat indoor drive revolution temp.condition (Mpa) (kg/cm g) Discharge suction exchanger exchanger frequency (rps) ∗ (TD) (TS) (TC) (TL) (TE) indoor outdoor Standard 29.3 70.8 11.5...

  • Page 39: Wiring Diagram

    4. WIRING DIAGRAM 4-1. Outdoor Unit PTC thermistor t˚ CN05 CN10 CN852 CN06 (HWI) CN16 CN101 CN07 CN17 (WHI) Noise Filter Compressor CN18 P.C. board IPDU board CN04 CN203 MCC-1600 CN19 MCC-1698 CN20 CN01 CN202 CN22 CN02 CN201 (RED) CN08 CN03 CN09 CN10...

  • Page 40: Specifications Of Electrical Parts

    5. SPECIFICATIONS OF ELECTRICAL PARTS 5-1. Outdoor Unit RAV-SM2246AT8(J)-E, RAV-SM2806AT8(J)-E Parts name Type Specifications Compressor RA640A3F-21M — ICF-340-A200-1 DC 340V, 200W Outdoor fan motor or SDF-340-A200-1 4-way valve coil STF-H01AJ1736A1 AC 220-240V 2-way valve coil VPV-MOAJ510B0 AC 220-240V PMV coil PQ-M10012-000*** DC12V High pressure switch...

  • Page 41: Refrigerant R410A

    6. REFRIGERANT R410A This air conditioner adopts the R410A refrigerant 7. Be sure to carry out installation or removal which does not damage the ozone layer. according to the installation manual. The working pressure of the new refrigerant R410A is Improper installation may cause refrigeration 1.6 times higher than conventional refrigerant (R22).
  • Page 42 Table 6-2-1 Thicknesses of annealed copper pipes Thickness (mm) Nominal diameter Outer diameter (mm) R410A 0.80 0.80 0.80 0.80 12.7 0.80 0.80 15.9 1.00 1.00 1. Joints For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants. a) Flare Joints Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds 20 mm.
  • Page 43 c) Insertion of Flare Nut d) Flare Processing ØD Make certain that a clamp bar and copper pipe have been cleaned. By means of the clamp bar, perform the flare processing correctly. Use either a flare tool for R410A or conventional flare tool. Flare processing dimensions differ according to the type of flare tool.
  • Page 44 Fig. 6-2-2 Relations between flare nut and flare seal surface 2. Flare Connecting Procedures and Precautions a) Make sure that the flare and union portions do not have any scar or dust, etc. b) Correctly align the processed flare surface with the union axis. c) Tighten the flare with designated torque by means of a torque wrench.

  • Page 45: Tools

    6-3. Tools 6-3-1. Required Tools Refer to the “4. Tools” (Page 14) 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.

  • Page 46: 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. It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant. 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 47: Instructions For Re-Use Piping Of R22 Or R407C

    2. Characteristics required for flux 6-5-3. Brazing • 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 In order to prevent the oxide film from occurring in the hard to carbonize.
  • Page 48 R410A in other companies. breakage of the pipe at the worst. 6-6-3. Branching Pipe for Simultaneous ∗ ∗ ∗ ∗ ∗ Pipe diameter and thickness (mm) Operation System • In the concurrent twin system, when TOSHIBA- Reference outside Wall thickness Material diameter (mm) (mm) specified branching pipe is used, it can be reused.
  • Page 49 6-6-5. Final Installation Checks Is there no scratch or dent on the existing pipes? Existing pipe: NO * Use a new pipes. Is it possible to operate the existing air conditioner? ∗ After the existing air conditioner operated in cooling mode for approx.
  • Page 50 6-6-6. Handling of Existing Pipe 6-6-7. Recovering Refrigerant When using the existing pipe, carefully check it for Use the refrigerant recovery equipment to recover the the following: refrigerant. • Wall thickness (within the specified range) • Scratches and dents • Water, oil, dirt, or dust in the pipe •...

  • Page 51: Circuit Configuration And Control Specifications

    7. CIRCUIT CONFIGURATION AND CONTROL SPECIFICATIONS 7-1. Outdoor Unit Control 7-1-1. Print Circuit Board, MCC-1698 (Compressor IPDU) CN04 CN01 Terminal for Terminal for power relay PTC-thermistor CN02 Connnector for MCC-1600 (CN17) CN03 CN09,10 Terminal for CN203 (RED), CN202 (WHI), Terminal for CH-90 power relay CN201 (BLK) Compressor output terminal...
  • Page 52 7-1-2. Print Circuit Board, MCC-1597 (Fan Motor IPDU) CN750 CN700 CN500 (White) (Blue) (Red) Fan motor output (Upper side) Fan motor output (Down side) Connector for MCC-1600 (CN22) and reactor CH68 CN504 CN602 F500 (Blue) (Black) Connector for MCC-1698 Connector for MCC-1600 (CN51) Electric circuit protective fuse (CN852) (250V, 15A)
  • Page 53 7-1-3. Print Circuit Board, MCC-1675 (Interface (CDB)) – 53 –...
  • Page 54 7-1-4. Print Circuit Board, MCC-1600 (Noise Filter) CN05 CN16 (Red) CN10 (Red) (Red) ower supply terminal (L1) erminal for power relay erminal for MCC-1675 (CN02) and Terminal for PTC thermistor aristor protective fuse (250V, 6.3A) CN06 (White) ower supply terminal (L2) CN17 (White) erminal for...

  • Page 55: Outline Of Main Controls

    7-2. Outline of Main Controls 1. PMV (Pulse Motor Valve) control 1) The aperture of the PMV (1, 2) is controlled between 90(45+45) to 1000 (500 + 500) pulses during operation. 2) During cooling and heating operations, the PMV aperture is controlled by the temperature difference between a detected temperature from a TS sensor and a saturation temperature equivalent value (TU temperature) from a Ps sensor.
  • Page 56 3. Outdoor fan revolution number control Control of fan revolution number and the fan taps in this unit are shown below. Fan Taps Revolution number Allocation [rpm] Upper Fan SM224 Lower Fan 1000 Upper Fan SM280 Lower Fan 1000 3-1. Cooling fan control 1) Cooling operations of the outdoor fan are controlled by a TL sensor, TO sensor and the compressor revolution number.
  • Page 57 3-2. Heating fan control 1) Heating operations of the outdoor fan are controlled by a TE sensor, TO sensor and the compressor revolution number. (Control from a minimum W1 to a maximum is performed according to the table below). 2) Operation is fixed for 3 minutes after start up by a maximum fan tap corresponding to the zones in the table below.
  • Page 58 4. Defrost control 1) During heating operations, defrost operations are performed when the temperature from the TE sensor satisfies any of the conditions in the A to D zones. 2) During defrosting operations, defrost will be terminated if the temperature from the TE sensor continues at 12°C or higher for 3 seconds or if the temperature is 7°C ≤...
  • Page 59 7. Heat sink temperature detection control 1) IGBT overheating prevention is protective control performed by a thermistor (TH sensor) in proximity to IGBT. 2) When a temperature of TH e” 83°C is detected, the fan tap is moved by 1 step up. Thereafter step-up is performed at a rate of +1 tap/5 seconds until a maximum fan tap is reached.
  • Page 60 12. SV2 valve control The conditions for opening and closing the SV2 valve are shown in the table below. SV2 Valve “Open” Conditions SV2 Valve “Close” Conditions When operation stopped after operating When operation started after operating or when 30 minutes Non-operation elapsed after opening SV2 under conditions (1) (2) When power placed “ON”...
  • Page 61 13. Coil heating control 1) This control has the function of heating the compressor by applying a current to the compressor when not operating instead using a case heater. This control is for the purpose of preventing stagnation of the refrigerant inside the compressor. 2) Malfunction in the compressor may result if a current is not applied for a specified time before a test run after installation as was previously the case.

  • Page 62: Troubleshooting

    8. TROUBLESHOOTING 8-1. Summary of Troubleshooting <Wired remote controller type> 1. Before troubleshooting 1) Required tools/instruments • + and – screwdrivers, spanners, radio cutting pliers, nippers, push pins for reset switch • Tester, thermometer, pressure gauge, etc. 2) Confirmation points before check a) The following operations are normal.
  • Page 63 <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 points before check a) The following operations are normal. 1. Compressor does not operate. •...

  • Page 64: Troubleshooting

    8-2. Troubleshooting 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 (sensors of the receiving part) The indoor unit monitors the operating status of the air conditioner, and the blocked contents of self-diagnosis are displayed restricted to the following cases if a protective circuit works.
  • Page 65 Lamp indication Check code Cause of trouble occurrence Operation Timer Ready Heat exchanger sensor (TCJ) trouble Heat exchanger sensor (TC) trouble Indoor unit sensor trouble Heat exchanger sensor (TA) trouble Alternate flash Discharge temp. sensor (TD) trouble Temp. sensor (TE) trouble Operation Timer Ready Temp.
  • Page 66 8-2-2. 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 of cool/heat — (Automatic cool/heat setting to automatic cool/heat prohibited model, or setting of heating to cooling-only model) Alternate flash –...
  • Page 67 8-2-3. Monitor Function of Remote Controller Switch 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 buttons simultaneously for 4 seconds to call the service monitor mode.
  • Page 68 – 68 –...
  • Page 69 – 69 –...
  • Page 70 Failure 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 Displayed when Stop controller (including wireless) and •...
  • Page 71 Failure 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 Displayed when 1. Check discharge temp. sensor (TD). Stop temp. sensor (TD) trouble is detected 2.
  • Page 72 Operation of diagnostic function Check code Judgment and measures Status of Cause of operation Condition air conditioner Indoor unit Discharge temp. trouble 1. Check refrigerating cycle (Gas leak) Displayed when ∗ Discharge temp. (TD) over 2. Trouble of electronic expansion valve Stop trouble is detected specified value was detected.
  • Page 73 Failure 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 trouble of remote controller, Indoor EEPROM trouble Not displayed 1. Check remote controller inter-unit wiring. No communication with header indoor unit at all 2.
  • Page 74 8-2-5. Diagnostic Procedure for Each Check Code (Outdoor Unit) 1) This section describes the diagnostic method for each check code displayed on the wired remote controller. 2) In some cases, a check code indicates multiple symptoms. In this case, confirm LED display on the outdoor P.C. board to narrow the contents to be confirmed. 3) The check code on the remote controller is displayed only when the same trouble occurred continuously by multiple times while LED of the outdoor P.C.
  • Page 75 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [F04] [Discharge temp. sensor (TD) trouble] Is connection of CN603 correct? Correct connector. Is resistance value of TD sensor correct? Replace TD sensor Check control P.C.
  • Page 76 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [F15] [Miswiring of heat exchanger sensor (TE, TS)] Is mounting status of Correct sensor mounting. TE and TS sensors correct? Is connection of CN600 correct? Correct connector.
  • Page 77 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [H01] [Compressor break down] Is power supply voltage normal? Correct power supply line. AC342 to 457V Is wire connection correct? Compressor lead Check wire connection (P.C.
  • Page 78 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [H03] [Current detection circuit trouble] Check outdoor P.C. board (MCC-1698). Failure → Replace [H04] [Case thermostat operation] Are CN609 connection and Correct connector. Case thermostat trouble →...
  • Page 79 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [H06] [Low pressure(PS) lowering trouble] Is indoor fan motor relation normal? When cooling, the indoor unit 1. Connector connection Fault part repair fan operate normally? 2.
  • Page 80 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [L10] [Heat sink temp. sensor (TH) trouble] Cut jumper line according to the explanation sheet packaged with the service P.C. board. [L29] [Communication trouble MCUs] Is the communication line between the compressor IPDU P.C.
  • Page 81 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P05] [Powersupply trouble] Voltage failure, open phase Check the same items as [P04] trouble. Is there no open phase of the Correct wiring power supply? Does the supply voltage drop or rise Confirmation of...
  • Page 82 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P15] [Gas leak detection] Is there gas leak? Fault part repair. Is there refrigerant shortage? Recharge refrigerant. Is PMV normal? Replace the PMV. Is service valve fully opened? Open service valve fully.
  • Page 83 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P19] [4-way valve inverse trouble] Does 4-way valve Is the coil work correctly? resistance Replace (Check pipe temp. etc. value of 4-way 4-way valve coil in cooling/heating valve normal? operation.)
  • Page 84 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P20] [High pressure protective operation] [P04] Is service valve Open service valve fully. fully opened? Reset the power supply and then perform test run Cooling season matching to the season.

  • Page 85: Setup At Local Site And Others

    Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P22] [Fan system trouble] Is power supply voltage normal? Check wiring construction. AC342 to 457V Ask repair of power supply. Rotate shaft of the fan motor by hands during power-OFF.
  • Page 86 Check Outdoor Check and troubleshooting code LED display (Item without special mention Indicates part of outdoor unit.) [P26] [Short-cuit of compressor drive element] Are connections of compressor lead and reactor correct? Correct wiring. (Check referring to the Wiring diagram.) Does the same trouble occur in Replace compressor operation without compressor lead? IPDU P.C.
  • Page 87 Temperature sensor Temperature – Resistance value characteristic table TA, TC, TCJ, TE, TS, TO sensors TD, TL sensors Representative value Representative value Resistance value (k Ω) Resistance value (k Ω) Temperature Temperature (˚C) (˚C) (Minimum value) (Standard value) (Maximum value) (Minimum value) (Standard value) (Maximum value) 32.33 33.80...
  • Page 88 9. SETUP AT LOCAL SITE AND OTHERS 9-1. Calling of Check code History <Contents> The trouble contents in the past can be called. <Procedure> TEMP. ON / OFF Push buttons simultaneously for 4 seconds or TIMER SET MODE more to call the service check mode. TIME SAVE VENT...
  • Page 89 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 3 minutes elapse Gr construction check Normal ∗...

  • Page 90: Outdoor Unit

    9-2. Outdoor Unit Various status displays and operations can be accessed using the push buttons (service switches) on the outdoor Control P.C. board and LED display. Service switch (SW01 and SW02) operation Concerning the LED display • The LED display has 4 patterns. : Go ON : Go OFF : flash (5 times/sec)
  • Page 91 1. Various settings available via the outdoor unit (Existing pipe, Maximum frequency change, Snow guard fan control, Cooling only setup, etc.) (1) Service switch setting Various settings can be made using the service switches [Method of operation] 1) Ensure the LED display shows the initial status. If not then ensure to restore the initial status. 2) Press SW01 for at least 5 seconds.
  • Page 92 Various settings confirmation method Whether the various settings are in effect or not can be confirmed. 1) Ensure the LED display shows the initial status. If not then ensure to restore the initial status. 2) Push SW01 for at least 5 seconds. D804 will start slowly flashing. 3) Push SW01 several times until reaching the desired function on the LED display.
  • Page 93 2. Service support functions (LED display and switch operation) (1) LED display switching (SW01 and SW02 operation) (1)-1. Display switch list Service switches SW01 and SW02 can be used to change the display content of LEDs D800 to D805 on the outdoor unit.
  • Page 94 (1)-2. Trouble display Current and the latest trouble (latest and including the present trouble) can be checked using the lighting status of the LEDs D800 to D805 on the outdoor unit. (1)-2-1. Current trouble indication LED indication Wired remote Name of trouble control trouble code D800 D801 D802 D803 D804 D805 Normal...
  • Page 95 (1)-3. Sensor, current, compressor operation frequency, PMV opening indication Interface (CDB) P.C. board detected values (for example temperature and current sensor values) can be easily checked. ∗ Temperature sensors ... TD, TE, TL, TS, TO, TH, TA, TC, TCJ ∗ Current ......Current sensor (CT) value detected ∗...
  • Page 96 (1)-4. Refrigerant leak detection function Monitors the amount of refrigerant being circulated based on the temperature sensors, compressor rotation speed, PMV opening during operation, and detects any refrigerant leaks during operation and indicates it using the LEDs on the outdoor unit. CAUTION ∗...
  • Page 97 (2) Maintenance inspections Special operations (SW01 and SW02 operations) The following special maintenance and inspection operations can be carried out using the service switches SW01 and SW02. [Method of operation] 1) Ensure the LED display shows the initial state. If not then please ensure to return it to the initial state. 2) Push and hold down SW01 for at least 5 seconds.
  • Page 98 3. Outdoor application operation Optional connector kit (TCB-KBOS3E) (1) Peak-cut control • Saves the power of the outdoor unit by the external peak-cut signal to suppress temporary peak power dissipation. • The power saving can be switched to three levels: 75%, 50%, and operation stop. (2) Night operation •...

  • Page 99: 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 100: Address Setup & Group Control

    10-2. Address Setup & Group Control <Definitions of terms> Indoor unit No. : N - n = Outdoor unit line address N (Max. 30) - Indoor unit address n (Max. 64) Group address : 0 = Single (Not group control) 1 = Master unit in group control 2 = Sub unit in group control Master unit (= 1) : The representative of multiple indoor units in group operation sends/receives signals to/...
  • Page 101 10-2-1. System Configuration 1. Single 2. Double twin Outdoor Indoor (Master/Header) Individual Master/Header Sub/Follower Sub/Follower Sub/Follower Remote controller 3. Twin 4. Triple Master/Header Sub/Follower Master/Header Sub/Follower Sub/Follower 5. Single group operation Sub/Header Sub/Header Sub/Header Master/Header Sub/Header (Max. : 8 units) •...
  • Page 102 10-2-2. Automatic Address Example from Unset Address (No miswiring) 1. Standard (One outdoor unit) 1. Single 2. Twin 3. Triple Individual Master/Header Sub/Follower Master/Header Sub/Follower Sub/Follower Only turning on source power supply (Automatic completion) 2. Single group operation (Multiple outdoor units = Miltiple indoor units only with serial communication) Sub/Header Sub/Header Sub/Header...

  • Page 103: Remote Controller Wiring

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

  • Page 104: Address Setup (Manual Setting From Remote Controller)

    10-4. Address Setup (Manual setting from remote controller) (Example of 2-lines wiring) In case that addresses of the indoor units will be (Real line: Wiring, Broken line: Refrigerant pipe) determined prior to piping work after wiring work Outdoor Outdoor • Set an indoor unit per a remote controller. 1 2 3 1 2 3 •...

  • Page 105: Confirmation Of Indoor Unit No. Position

    10-5. 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 106 <Maintenance/Check list> Aiming in environmental preservation, it is strictly recommended to clean and maintain the indoor/outdoor units of the operating air conditioning system regularly to secure effective operation of the air conditioner. It is also recommended to maintain the units once a year regularly when operating the air conditioner for a long time.

  • Page 107: Replacement Of The Service P.c. Board

    11. REPLACEMENT OF THE SERVICE P.C. BOARD 11-1. Interface (CDB) P.C. BOARD MCC-1675 (4316V622) 1. Setting the jumper wires Part name Function Setting Jumper wire J800 ~ J803 Model switching Cutthese jumper wires according to the following table. Model switching (J800 to J803) Since this service P.C.

  • Page 108: How To Exchange Compressor

    12. HOW TO EXCHANGE COMPRESSOR 12-1. Exchanging Procedure of Compressor (Outline) START Open PMV forcedly and then recover refrigerant Has refrigerant recovery work been done? using a refrigerant recovery unit. Turn off the circuit breaker. Never recover the refrigerant to the outdoor unit. •...

  • Page 109: Detachments

    13. DETACHMENTS No. Part name Procedure Remarks WARNING Common procedures Front panel Stop operation of the air conditioner and turn off breaker switch. CAUTION Ensure wearing of gloves when performing any work in order to avoid injury from parts, etc. Left claw Left claw Left claw...
  • Page 110 No. Part name Procedure Remarks Side 1) Following to work of item 1of cabinet 2) Remove the side cabinet (left) and base plate screws. (left) (2 pcs, Ø4 ×10 hexagon screws) Side cabinet 3) Slide the side cabinet (left) downwards and remove. (left) Base plate Air-outlet...
  • Page 111 No. Part name Procedure Remarks Electrical WARNING part There is a risk of electric shock because of the voltage replacement remains in the electrolytic capacitor on the P.C. board for a Inverter cover Inverter cover while after the power is turned off. Make sure that the voltage does not remain with a tester before disassembling the inverter assembly.
  • Page 112 No. Part name Procedure Remarks Electrical 2. FAN-IPDU P.C. board Screws part 1) Following to work of item to 2) of 1 of replacement (continued) 2) Remove the connectors (6 places) from the FAN-IPDU P.C. board. CN750 ... Fan motor (upper) connector (3P: White) CN700 ...
  • Page 113 No. Part name Procedure Remarks Electrical 3. Interface (CDB) P.C. board part 1) Following to work of item to 2) of 1 of replacement (continued) Supporters 2) Remove the Interface (CDB) P.C. board connectors (18 places) CN603 ... TD sensor (3P: White, tube: Red) CN602 ...
  • Page 114 No. Part name Procedure Remarks Electrical 5. Indoor unit reactor Indoor unit reactor (CH68) part 1) Following to work of item to 2) of 1 of replacement (continued) 2) Remove the connecter of the reactor lead wire connected to the reactor. 3) Remove the fixing screws of the reactor.
  • Page 115 No. Part name Procedure Remarks Fan motor 1) Following to work of item 1, Propeller fan 2) Remove the flange nut from the fan motor and Loosen by turning Loosen by turning Loosen by turning propeller fan. clockwise clockwise clockwise •...
  • Page 116 No. Part name Procedure Remarks Compressor 1. Removing a broken compressor 1) Recover refrigerant gas. compressor lead 2) Following to work of item 1 and 3) Remove the piping panel (front). Remove the screws from piping panel (front) and base plate.
  • Page 117 No. Part name Procedure Remarks Compressor 2. Compressor attachment Wind the compressor lead 4 times around the ferrite core 1) Detachment of the reverse order of removal. compressor lead NOTE (continued) • Also ensure to replace the compressor lead after replacing the compressor.
  • Page 118 No. Part name Procedure Remarks PMV coil 1. Detachment PMV coil 1) Following to work of item 1 of 2) Remove the coil from the PMV body by rotating the coil (about 45°) while drawing the coil upward. 2. Attachment (About 45˚) (About 45˚) 1) Fix the coil positioning protrusions securely in the...

  • Page 119: Exploded Views And Parts List

    14. EXPLODED VIEWS AND PARTS LIST 14-1. Outdoor Unit RAV-SM2246AT8(J)-E, RAV-SM2806AT8(J)-E, RAV-SM2246AT8-TR, RAV-SM2806AT8-TR – 119 –...
  • Page 120 PANEL, SIDE 4310A127 PANEL, SIDE, LEFT 43100437 PANEL, FRONT, PIPING 4310A115 PANEL, BACK, PIPING 43107276 HANGER 43107295 HADLE, HANGER 4311M691 MARK, TOSHIBA 43122160 PLATE 43122161 PLATE 43122162 SUPPORTER, MOTOR 43122163 SUPPORTER, MOTOR 4312C149 MOTOR, FAN, ICF-340-A200-1 43120270 FAN, PROPELLER, PS561...

  • Page 121: Inverter Assembly

    14-2. Inverter Assembly RAV-SM2246AT8(J)-E, RAV-SM2806AT8(J)-E, RAV-SM2246AT8-TR, RAV-SM2806AT8-TR Q’ty/Set RAV-SM Location Part No. Description 2246 2806 2246 2806 2246 2806 AT8-E AT8-E AT8J-E AT8J-E AT8-TR AT8-TR 43150360 SENSOR ASSY, SERVICE, TS 43150373 SENSOR ASSY, SERVICE, TO 43150376 SENSOR ASSY, SERVICE, TE 43150374 SENSOR ASSY, SERVICE, TD 43150375...
  • Page 122 TOSHIBA CARRIER CORPORATION 72-34 Horikawa-cho, Saiwai-ku, Kawasaki-shi, Kanagawa 212-8585, JAPAN Copyright © 2017 TOSHIBA CARRIER CORPORATION, ALL Rights Reserved.

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