Carrier RAV-SP180UT-UL Service Manual
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Carrier RAV-SP180UT-UL Service Manual

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FILE NO. A09-009

SERVICE MANUAL

AIR-CONDITIONER
SPLIT TYPE
INDOOR UNIT
<SUPER DIGITAL INVERTER>
4-Way Air Discharge Cassette Type
RAV-SP180UT-UL, RAV-SP240UT-UL,
RAV-SP300UT-UL, RAV-SP360UT-UL,
RAV-SP420UT-UL
Under Ceiling Type
RAV-SP180CT-UL, RAV-SP240CT-UL,
RAV-SP300CT-UL, RAV-SP360CT-UL,
RAV-SP420CT-UL
High Wall Type
RAV-SP180KRT-UL, RAV-SP240KRT-UL
R410A
PRINTED IN JAPAN, Nov., 2009 ToMo

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Summary of Contents for Carrier Carrier RAV-SP180UT-UL

  • Page 1: Service Manual

    FILE NO. A09-009 SERVICE MANUAL AIR-CONDITIONER SPLIT TYPE INDOOR UNIT <SUPER DIGITAL INVERTER> 4-Way Air Discharge Cassette Type RAV-SP180UT-UL, RAV-SP240UT-UL, RAV-SP300UT-UL, RAV-SP360UT-UL, RAV-SP420UT-UL Under Ceiling Type RAV-SP180CT-UL, RAV-SP240CT-UL, RAV-SP300CT-UL, RAV-SP360CT-UL, RAV-SP420CT-UL High Wall Type RAV-SP180KRT-UL, RAV-SP240KRT-UL R410A PRINTED IN JAPAN, Nov., 2009 ToMo...

  • Page 2: Table Of Contents

    Adoption of New Refrigerant This Air Conditioner is a new type which adopts a new refrigerant HFC (R410A) instead of the conventional refrigerant R22 in order to prevent destruction of the ozone layer. WARNING Cleaning of the air filter and other parts of the air filter involves dangerous work in high places, so be sure to have a service person do it.
  • Page 3 7. INDOOR CONTROL CIRCUIT ..............34 7-1. Indoor Controller Block Diagram (4-Way Air Discharge Cassette Type / Under Ceiling Type) ........34 7-2. Indoor Controller Block Diagram (High Wall Type) ............37 7-3. Control Specifications (4-Way Air Discharge Cassette Type / Under Ceiling Type) ........39 7-4.

  • Page 4: Safety Caution

    SAFETY CAUTION The important contents concerned to the safety are described on the product itself and on this Service Manual. Please read this Service Manual after understanding the described items thoroughly in the following contents (Indications/Illustrated marks), and keep them. [Explanation of indications] Indication Explanation...
  • Page 5 WARNING Before troubleshooting or repair work, check the earth wire is connected to the earth terminals of the main unit, otherwise an electric shock is caused when a leak occurs. If the earth wire is not correctly connected, contact an electric engineer for rework. Check earth wires.
  • Page 6 WARNING After the work has finished, be sure to use an insulation tester set (500V Megger) to check the resistance is 2MΩ or more between the charge section and the non-charge metal section (Earth position). If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s Insulator check side.
  • Page 7 • 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 8 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 9: Specifications

    1. SPECIFICATIONS 1-1. 4-Way Air Discharge Cassette Type RAV-SP180UT-UL, RAV-SP240UT-UL, RAV-SP300UT-UL, RAV-SP360UT-UL, RAV-SP420UT-UL Size System Outdoor Model RAV- SP180AT2-UL SP240AT2-UL SP300AT2-UL SP360AT2-UL SP420AT2-UL Indoor Model RAV- SP180UT-UL SP240UT-UL SP300UT-UL SP360UT-UL SP420UT-UL Cooling Rated Capacity (Btu/h) 19000 25000 32000 36400 40500 SEER 20.50 20.70...

  • Page 10: Under Ceiling Type

    1-2. Under Ceiling Type RAV-SP180CT-UL, RAV-SP240CT-UL, RAV-SP300CT-UL, RAV-SP360CT-UL, RAV-SP420CT-UL Size System Outdoor Model RAV- SP180AT2-UL SP240AT2-UL SP300AT2-UL SP360AT2-UL SP420AT2-UL Indoor Model RAV- SP180CT-UL SP240CT-UL SP300CT-UL SP360CT-UL SP420CT-UL Cooling Rated Capacity (Btu/h) 17000 23600 30000 36000 41000 SEER 17.00 19.50 20.60 20.40 18.80 Performance EER...

  • Page 11: High Wall Type

    1-3. High Wall Type RAV-SP180KRT-UL, RAV-SP240KRT-UL Size System Outdoor Model RAV-SP180AT2-UL RAV-SP240AT2-UL Indoor Model RAV-SP180KRT-UL RAV-SP240KRT-UL Cooling Rated Capacity (Btu/h) 18000 25000 SEER 19.5 16.7 Performance 10.0 Heating Rated Capacity (Btu/h) 19000 26400 HSPF 11.5 Outdoor Min - Max DB ∗1 (°F) 23 to 109.4 Cooling...

  • Page 12: Construction Views (External Views)

    2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) 2-1. 4-Way Air Discharge Cassette Type RAV-SP180UT-UL 33’9” to 35’8”(860 to 910) Ceiling open dimension 39’4”(1000) Be sure to set a check port A or more at the position of the figure below. Check port B 17’7”(450)) 7’9”(200) 39’4”(1000)
  • Page 13 RAV-SP240UT-UL 33’9” to 35’8”(860 to 910) Ceiling open dimension 39’4”(1000) Be sure to set a check port A or more at the position of the figure below. Check port B 17’7”(450)) 7’9”(200) 39’4”(1000) or more When a fresh-air inlet box is installed, make check port B at the side of the fresh-air inlet box Space required for installation...
  • Page 14 RAV-SP300UT-UL, RAV-SP360UT-UL, RAV-SP420UT-UL 33’9” to 35’8”(860 to 910) Ceiling open dimension 39’4”(1000) Be sure to set a check port A or more at the position of the figure below. Check port B 17’7”(450)) 7’9”(200) 39’4”(1000) or more When a fresh-air inlet box is installed, make check port B at the side of the fresh-air inlet box Hole for remote controller wires...

  • Page 15: Under Ceiling Type

    2-2. Under Ceiling Type RAV-SP180CT-UL Upper pipe draw-out port (Knockout) Hole for remote controller wires(Knockout) 8’3”(210) 8’5”(216) Pipe draw-out port(Knockout) Conduit hole (Hole for power supply cable, knockout) 6’6”(167) 1’5” 2’0” 4’3” 3’0” 4’1” 3’3” (39) (52) (110) (76) Drain port VP20 (105) (84) (lnner dia.Ø1’0”(26), hose supplied)
  • Page 16 RAV-SP240CT-UL Upper pipe draw-out port (Knockout) Hole for remote controller wires(Knockout) Pipe draw-out port(Knockout) 8’3”(210) 8’5”(216) Conduit hole (Hole for power supply cable, knockout) 6’6”(167) Drain port VP20 1’5” 2’0” 4’3” 3’0” (lnner dia.Ø1’0”(26), 4’1” 3’3” (39) (52) (110) (76) hose supplied) (105) (84)
  • Page 17 RAV-SP300CT-UL, RAV-SP360CT-UL, RAV-SP420CT-UL Pipe draw-out port(Knockout) Upper pipe draw-out port (Knockout) Hole for remote controller wires(Knockout) 8’3”(210) 8’5”(216) Conduit hole (Hole for power supply cable, knockout) 6’6”(167) 1’5” 2’0” 4’3” 3’0” Drain port VP20 4’1” 3’3” (39) (52) (110) (76) (lnner dia.Ø1’0”(26), (105) (84)

  • Page 18: High Wall Type

    2-3. High Wall Type RAV-SP180KRT-UL 41’3”(1050) Front panel 9’0”(228) Air inlet Air filter 2’0”(50) 2’0”(50) Heat exchanger Knock Knock out out system system 2’8” 3’1” Knock out system (72) (78) Installation plate hanger 5’2”(132) 22’4”(568) 7’9”(200) 5’9”(150) 1’6”(40) Hole for power supply cable Connecting pipe 12’3”(0.49m) Installation plate hanger Unit : ln(mm)
  • Page 19 RAV-SP240KRT-UL 41’3”(1050) Front panel 9’0”(228) Air inlet Air filter 2’0”(50) 2’0”(50) Heat exchanger Knock Knock out out system system 2’8” 3’1” Knock out system (72) (78) Installation plate hanger 5’2”(132) 22’4”(568) 7’9”(200) 5’9”(150) 1’6”(40) Hole for power supply cable Connecting pipe 12’3”(0.49m) Installation plate hanger Ø3/8”(9.52mm) Unit : ln(mm)

  • Page 20: Systematic Refrigerating Cycle Diagram

    3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM 3-1. 4-Way Air Discharge Cassette Type / Under Ceiling Type • Single type (Combination of 1 indoor unit and 1 outdoor unit) (Indoor unit) Distributor (Strainer incorporated) TCJ sensor Strainer Air heat exchanger TC sensor Heating Cooling Refrigerant pipe...

  • Page 21: High Wall Type

    3-2. High Wall Type • Single type (Combination of 1 indoor unit and 1 outdoor unit) (Indoor unit) Distributor (Strainer incorporated) TCJ sensor Air heat exchanger TC sensor Heating Cooling Refrigerant pipe Refrigerant pipe at liquid side at gas side (Outer dia : ØB) (Outer dia : ØA) To outdoor unit...

  • Page 22: Wiring Diagram

    4. WIRING DIAGRAM 4-1. 4-Way Air Discharge Cassette Type RAV-SP180UT-UL, RAV-SP240UT-UL, RAV-SP300UT-UL, RAV-SP360UT-UL, RAV-SP420UT-UL – 22 –...

  • Page 23: Under Ceiling Type

    4-2. Under Ceiling Type RAV-SP180CT-UL, RAV-SP240CT-UL, RAV-SP300CT-UL, RAV-SP360CT-UL, RAV-SP420CT-UL – 23 –...

  • Page 24: High Wall Type

    4-3. High Wall Type RAV-SP180KRT-UL, RAV-SP240KRT-UL – 24 –...

  • Page 25: Specifications Of Electrical Parts

    5. SPECIFICATIONS OF ELECTRICAL PARTS 5-1. 4-Way Air Discharge Cassette Type RAV-SP180UT-UL, RAV-SP240UT-UL Parts name Type Specifications Fan motor (for indoor) SWF-340U60-2 Output (Rated) 60 W Thermo. sensor (TA-sensor) 328 mm 10 kΩ at 77°F (25°C) Heat exchanger sensor (TCJ-sensor) Ø6 mm, 1000 mm 10 kΩ...

  • Page 26: High Wall Type

    5-3. High Wall Type RAV-SP180KRT-UL, RAV-SP240KRT-UL Parts Name Type Specications Fan motor (for indoor) ICF-340U30-1 Output (Rated) 30W, 340V DC Grille motor MP24Z3T Output (Rated) 1W, 16 poles DC Thermo. Sensor (TA sensor) 318mm 10kΩ at 77°F (25°C) Heat exchanger sensor (TC sensor) Ø6,800mm 10kΩ...

  • Page 27: Refrigerant R410A

    6. REFRIGERANT R410A This air conditioner adopts the new refrigerant HFC 6. When an air conditioning system charged with a (R410A) which does not damage the ozone layer. large volume of refrigerant is installed in a small room, it is necessary to exercise care so that, The working pressure of the new refrigerant R410A even when refrigerant leaks, its concentration is 1.6 times higher than conventional refrigerant...
  • Page 28 Table 6-2-1 Thicknesses of annealed copper pipes Thickness (In (mm)) Outer diameter (In (mm)) R410A 1/4” (6.4) 0.03” (0.80) 0.03” (0.80) 3/8” (9.5) 0.03” (0.80) 0.03” (0.80) 1/2” (12.7) 0.03” (0.80) 0.03” (0.80) 5/8” (15.9) 0.04” (1.00) 0.04” (1.00) 1. Joints For copper pipes, flare joints or socket joints are used.
  • Page 29 c) Insertion of Flare Nut d) Flare Processing Make certain that a clamp bar and copper pipe have been cleaned. By means of the clamp bar, perform the flare processing correctly. ØD Use either a flare tool for R410A or conventional flare tool. Flare processing dimensions differ according to the type of flare tool.
  • Page 30 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 31: Tools

    6-3. Tools 6-3-1. Required Tools Refer to the “4. Tools” (Page 8) 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 32: 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 33 2. Characteristics required for flux 6-5-3. Brazing • Activated temperature of flux coincides with As brazing work requires sophisticated techniques, the brazing temperature. experiences based upon a theoretical knowledge, it must be performed by a person qualified. • Due to a wide effective temperature range, flux is hard to carbonize.

  • Page 34: Indoor Control Circuit

    7. INDOOR CONTROL CIRCUIT 7-1. Indoor Controller Block Diagram (4-Way Air Discharge Cassette Type / Under Ceiling Type) 7-1-1. Connection of Wired Remote Controller Master wired remote controller (Max. 2 units) Weekly timer Display Display LCD Function setup LCD driver Display LED Key switch Function setup...
  • Page 35 7-1-2. 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 Grille up/down SW DC5V Power Remote controller Temporary circuit communication circuit operation SW (Follower) (Follower) Indoor control P.C.
  • Page 36 7-1-3. Connection of Both Wired Remote Controller and Wireless Remote Controller Kit Indoor unit #1 (Header) Master wired remote controller Wireless remote controller kit (Max. 2 units) Weekly timer Receiver P.C. board Display LED Display Function Display setup driver Receive Function setup SW Display circuit...

  • Page 37: Indoor Controller Block Diagram (High Wall Type)

    7-2. Indoor Controller Block Diagram (High Wall Type) 7-2-1. Connection of Wired Remote Controller Wired remote controller Weekly timer Display Display LCD Function setup LCD driver Display LED Key switch Function setup Key switch DC5V Remote controller Power circuit DC5V communication circuit ∗2 Power...
  • Page 38 7-2-2. Connection of Wireless Remote Controller Central control remote controller (Sold separately) Follower unit Indoor unit #1 Header unit Indoor control P.C. board (MCC-1510) Central control communication circuit DC20V Remote controller communication circuit DC12V EEPROM Receiver and Display P.C. board DC5V TA sensor (MCC-5044)

  • Page 39: Control Specifications (4-Way Air Discharge Cassette Type / Under Ceiling Type)

    7-3. Control Specifications (4-Way Air Discharge Cassette Type / Under Ceiling Type) Item Outline of specifications Remarks When power 1) Distinction of outdoor unit supply is reset When the power supply is reset, the outdoors are distin- guished and the control is selected according to the distinguished result.
  • Page 40 Item Outline of specifications Remarks Room temp. 2) Using the CODE No. 06, the setup temperature in heating Shift of suction control operation can be corrected. temperature in heating (Continued) operation SET DATA Setup temp. +0°F +3.6°F +7.2°F +10.8°F correction (+0°C) (+2°C) (+4°C)
  • Page 41 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 42 Item Outline of specifications Remarks Fan speed control Standard Type 1 Type 3 Type 6 CODE No. (Continued) Selection of high [5d] ceiling type SW501 (1)/(2) OFF/OFF ON/OFF OFF/ON ON/ON HEAT COOL HEAT COOL HEAT COOL HEAT COOL CODE No.: [5d] or selection of H+, H H+, H H+, H H+, H high ceiling on P .C.
  • Page 43 Item Outline of specifications Remarks Cool air discharge 1) In heating operation, the indoor fan is controlled In D and E zones, the preventive control based on the detected temperature of Tc sensor or priority is given to air Tcj sensor. As shown below, the upper limit of the volume selection setup revolution frequency is restricted.
  • Page 44 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 45 Item Outline of specifications Remarks Louver control: 1) Louver position setup The louver position In case of 4-way at horizontal • When the louver position is changed, the position moves Discharge discharge position necessarily to downward discharge position once to return to Cassette type at under SP240 the set position.
  • Page 46 Item Outline of specifications Remarks Louver control <<Selection of Swing mode>> (Continued): • For the Swing mode, the following three types of modes are Carry out setting In case of 4-way selectable and settable by keeping Swing/Direction operation during stop SWING/FIX Discharge button pushed for 4 seconds or more on the remote controller.
  • Page 47 Item Outline of specifications Remarks Louver control • If there is the locked louver in the unit, [ ] goes on the For the setting remote controller screen. operation, refer to (Continued): In case of 4-way “10-1-1. How to set •...
  • Page 48 Item Outline of specifications Remarks HA control 1) This control is connected to TV control or remote In the group operation, start/stop I/F, etc, and start/stop are available by HA use this control by signal input from the remote position. connecting to either master or follower 2) This control outputs start/stop status to HA output...
  • Page 49 Item Outline of specifications Remarks Central control mode 1) Setting at the central controller side enables to selection select the contents which can be operated on the remote controller at indoor unit side. 2) RBC-AMT32UL [Last push priority] : (No display) The operation contents can be selected from both remote controller and central controller of the indoor unit side, and the operation is...
  • Page 50 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 51 Item Outline of specifications Remarks 46°F (8°C) heating/ 1) This functional is intended for the cold latitudes and Frost protective performs objective heating operation (46°F (8°C) operation heating operation). In a group connection, (4-Way Air Discharge 2) This function is valid only for combination with the if there is even one Cassette Type only) outdoor units.

  • Page 52: Control Specifications (High Wall Type)

    7-4. Control Specifications (High Wall Type) Item Outline of specifications Remarks When power 1) Distinction of outdoor unit supply is reset When the power supply is reset, the outdoors are distin- guished and the control is selected according to the distinguished result.
  • Page 53 Item Outline of specifications Remarks Room temp. 2) Using the CODE No. 06, the setup temperature in heating Shift of suction control operation can be corrected. temperature in heating (Continued) operation SET DATA Setup temp. +0°F +3.6°F +7.2°F +10.8°F correction (+0°C) (+2°C) (+4°C)
  • Page 54 Item Outline of specifications Remarks Fan speed control 1) Operation with (HH), (H), (L) or [AUTO] mode is carried HH > H+ > H > L+ > L > out by the command from the remote controller. 2) When the fan speed mode [AUTO] is selected, the fan speed varies by the difference between Ta and Ts.
  • Page 55 Item Outline of specifications Remarks Fan speed control (Continued) COOL HEAT SP180 SP240 1080 1200 1080 1180 1020 1080 1000 1020 3) When thermo sensor turns OFF during heating, the fan “PRE-HEAT ” speed mode becomes UL ( weak). indication 4) When Ta is 77°F (25°C) or above at the beginning of HEAT operation or when canceling defrost mode, H or HH mode continues for 1 minute from the time when Tc enters zone...
  • Page 56 Item Outline of specifications Remarks Freeze preventive control 1) The cooling operation (including Dry operation) is Tcj: (Low temperature release) performed as follows based on the detected Indoor heat exchanger temperature of Tc sensor or Tcj sensor. sensor temperature When [J] zone is detected for 6 minutes (Following figure), the commanded frequency is decreased from the real operation frequency.
  • Page 57 Item Outline of specifications Remarks After-heat When heating operation stops, in some cases, the indoor fan elimination operates with (L) for approx. 30 seconds. Louver 1) During the first operation after power on, louver position is Louver angle: 0° control controlled automatically according to operation mode ( full close ) (COOL/HEAT).
  • Page 58 Item Outline of specifications Remarks Frequency fixed <In case of wireless remote controller> operation (Test run) 1) Push [ON/OFF] button. 2) Using [SELECT] button, set [COOL] or [HEAT] to MODE the operation mode to drive the air conditioner. 3) Set [HIGH ] to the fan speed.
  • Page 59 Item Outline of specifications Remarks Power-saving 1) Power-saving opration is available in the AUTO mode. control 2) The set temperature is corrected using various sensor data within the range where comfort is maintained. 3) By using various sensor data including room temp. Ta, outside air temp.
  • Page 60 Item Outline of specifications Remarks Save operation Carry out setting 1) Turn on SAVE button on the wired remote controller. (Wired remote operation during stop of 2) During operation of save operation, lights on the wired controller specific the unit; otherwise the remote controller.
  • Page 61 Item Outline of specifications Remarks Hi POWER When you push the Hi POWER button during cooling, • [Hi POWER] Display operation heating or AUTO, the air conditioner will start the following (Wireless remote operation. controller specific • Cooling operation operations) Performs the cooling operation at +1.8°F (1°C) lower than the setting temperature.
  • Page 62 Item Outline of specifications Remarks PRESET operation Start the air conditioner in the operation mode which you want the • [ ] display (Wireless remote remote controller to memorize. controller specific 1) Push and hold the PRESET button for more than 3 seconds operations) while the display flashes.

  • Page 63: Indoor Print Circuit Board (4-Way Air Discharge Cassette Type)

    7-5. Indoor Print Circuit Board (4-Way Air Discharge Cassette Type) <MCC-1570> – 63 –...
  • Page 64 Optional connector specifications of indoor P.C. board (MCC-1570) – 64 –...

  • Page 65: Indoor Print Circuit Board (Under Ceiling Type)

    7-6. Indoor Print Circuit Board (Under Ceiling Type) <MCC-1402> – 65 –...
  • Page 66 Indoor P.C. board optional connector specifications <MCC-1402> Connector Function Specifications Remarks DC12V (COM) Defrost output ON during defrost operation of outdoor unit Thermo. ON output ON during Real thermo-ON (Comp ON) ON when operation mode is in cooling system Option output CN60 Cooling output (COOL, DRY, COOL in AUTO cooling/heating)

  • Page 67: Indoor Print Circuit Board (High Wall Type)

    7-7. Indoor Print Circuit Board (High Wall Type) <MCC-1510> TCJ sensor Microcomputer operation LED CN102, DC 5V TC sensor EEPROM Inter-unit wire CN101, DC 5V IC10 CN67, AC 200V HA (T10) CN61, DC 12V Option power supply CN309, AC 200V Option output CN60, DC 12V CN71, DC 5V...
  • Page 68 High Wall Type P.C. board optional switch/Connector specifications Connector Function Specifications Remarks Terminator resistor OFF: No terminator resistor, Setup at shipment OFF: No terminator resistor. Bit 1 provided/Not provided ON: Terminator resistor provided Only 1 unit is ON during central control by custom only. SW01 OFF: Remote controller A Remote controller A/B...

  • Page 69: Troubleshooting

    8. TROUBLESHOOTING 8-1. Summary of Troubleshooting <Wired remote controller type> 1. Before troubleshooting 1) Required tools/instruments • screwdrivers, spanners, radio cutting pliers, nippers, push pins for reset switch – • Tester, thermometer, pressure gauge, etc. 2) Confirmation points before check a) The following operations are normal.
  • Page 70 <Wireless remote controller type> 1. Before troubleshooting 1) Required tools/instruments • screwdrivers, spanners, radio cutting pliers, nippers, etc. – • Tester, thermometer, pressure gauge, etc. 2) Confirmation points before check a) The following operations are normal. 1. Compressor does not operate. •...

  • Page 71: Troubleshooting

    8-2. Troubleshooting (4-Way Air Discharge Cassette Type / Under Ceiling Type) 8-2-1. Outline of judgment The primary judgment to check whether a trouble occurred in the indoor unit or outdoor unit is carried out with the following method. Method to judge the erroneous position by flashing indication on the display part of the indoor unit (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 72 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 ⎬ Heat exchanger sensor (TA) error ⎪ Alternate flash ⎭ Discharge temp. sensor (TD) error ⎫...
  • Page 73 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) Alternate flash –...
  • Page 74 8-2-3. Check Code List (Indoor) ¡ ¥ : Go on, : Flash, : Go off ALT (Alternate): Alternate flashing when there are two flashing LED SIM (Simultaneous): Simultaneous flashing when there are two flashing LED (Indoor unit detected) Check code indication Sensor lamp indication Air conditioner operation Block indication...
  • Page 75 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 76 Error mode detected by remote controller or central controller 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 77 Error mode detected by outdoor unit Operation of diagnostic function Judgment and measures Status of Check code Cause of operation Condition air conditioner 1. Check discharge temp. sensor (TD). Disconnection, short of discharge Displayed when Stop temp. sensor (TD) error is detected 2.
  • Page 78 Operation of diagnostic function Judgment and measures Status of Check code Cause of operation Condition air conditioner 1. Check refrigerating cycle (Gas leak) Discharge temp. error Displayed when Stop 2. Trouble of electronic expansion valve ∗ Discharge temp. (TD) over error is detected specified value was detected.
  • Page 79 8-2-4. Diagnostic Procedure for Each Check Code (Indoor Unit) Check code [E01 error] Correct inter-unit wire Is inter-unit wire 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 80 [E04 error] <In case of 4-Way Air Discharge Cassette Type> 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 wires correct? inter-unit wires.
  • Page 81 [E04 error] <In case of Under Ceiling Type> Does outdoor unit operate? Is setup of group address correct? Check CODE No. [14]. Are 1, 2, 3 inter-unit wires normal? Correct inter-unit wire. Are connections from connectors of inter-terminal blocks (1, 2, 3) Correct connection of connector.
  • Page 82 [E18 error] Correct inter-unit wire Is inter-unit wire of remote controller. of A and B normal? 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 connection status of indoor unit...
  • Page 83 [L30 error] Are outside devices of Check indoor P.C. board. Defect → Replace connector CN80 connected? Check outside devices. Do outside devices normally work? Defect → Replace Check cause of operation. [P30 error] (Central controller) Is group operation carried out? Is there check code on wired remote controller and simple remote controller?
  • Page 84 [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 85 [P12 error] Turn off the power. Is there no connection error or Correct connection disconnection on connectors CN333 of connector. and CN334 of indoor unit P.C. board? CN333 Remove connectors CN333 and CN334 of indoor unit P.C. board. CN334 Does the fan rotate without trouble Replace indoor fan motor.
  • Page 86 [F02 error] Is connection of TC sensor connector Correct connection of connector. (CN101 on Indoor P.C. board) correct? Are characteristics of Replace TC sensor. TC sensor resistance value normal? ∗ Refer to Characteristics-2. Check indoor P.C. board. Defect → Replace [F01 error] Is connection of TCJ sensor connector Correct connection of connector.
  • Page 87 [E03 error] (Header indoor unit) [E03 error] is detected when the indoor unit cannot receive a signal from the remote controller. Check A and B remote controllers. As communication is impossible, this check code [E03] is not displayed on the remote controller and the central controller.
  • Page 88 Temperature sensor Temperature – Resistance value characteristic table TA, TC, TCJ, TE, TS, TO sensors TD, TL sensors Representative value Representative value Resistance value (kΩ Ω Ω Ω Ω ) Resistance value (kΩ Ω Ω Ω Ω ) Temperature Temperature °F (°C) °F (°C) (Minimum value) (Standard value) (Maximum value)

  • Page 89: Troubleshooting (High Wall Type)

    8-3. Troubleshooting (High Wall Type) 8-3-1. Outline of judgment The primary judgment to check whether a trouble occurred in the indoor unit or outdoor unit is carried out with the following method. Method to judge the erroneous position by flashing indication on the display part of the indoor unit The indoor unit monitors the operating status of the air conditioner, and the blocked contents of self-diagnosis are displayed restricted to the following cases if a protective circuit works.
  • Page 90 Lamp indication Check code Cause of trouble occurrence Ready Timer Operation ⎫ Heat exchanger sensor (TCJ) error ⎪ ⎪ Heat exchanger sensor (TC) error Indoor unit sensor error ⎬ ⎪ ⎪ Heat exchanger sensor (TA) error Alternate flash ⎭ Discharge temp. sensor (TD) error ⎫...
  • Page 91 8-3-2. Others (Other than Check Code) Lamp indication Check code Cause of trouble occurrence Ready Timer Operation — During test run Simultaneous flash Ready Timer Operation Disagreement of cool/heat — (Automatic cool/heat setting to automatic cool/heat prohibited model, or setting of heating to cooling-only model) Alternate flash –...
  • Page 92 8-3-3. Check Code List (Indoor) ¡ ¥ : Go on, : Flash, : Go off ALT (Alternate): Alternate flashing when there are two flashing LED SIM (Simultaneous): Simultaneous flashing when there are two flashing LED (Indoor unit detected) Check code indication Sensor lamp indication Air conditioner operation Block indication...
  • Page 93 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 94: 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 95 Error mode detected by outdoor unit Operation of diagnostic function Check code Judgment and measures Status of Indoor unit Cause of operation Condition air conditioner High Wall 1. Check discharge temp. sensor (TD). Disconnection, short of discharge Displayed when Stop temp.
  • Page 96 Operation of diagnostic function Check code Judgment and measures Status of Indoor unit Cause of operation Condition air conditioner High Wall Discharge temp. error 1. Check refrigerating cycle (Gas leak). Displayed when ∗ Discharge temp. (TD) over Stop 2. Trouble of electronic expansion valve. error is detected specified value was detected.
  • Page 97 8-3-4. Diagnostic Procedure for Each Check Code (Indoor Unit) Check code [E01 error] Correct inter-unit cable of remote controller Is inter-unit cable of A and B normal? Is there no disconnection or Correct connection of connector. contact error of connector on harness Check circuit wiring.
  • Page 98 [E04 error] Does outdoor unit work? Is group address set correctly? Check CODE No. “14”. Are L1/L2/S wires normal? Correct wires. Are connectors from indoor unit Correct connector connection. and outdoor unit connected normally? Is indoor unit switch SW02 setting correct? Correct switch setting Bit 1: OFF on MCC-1510 P.C.
  • Page 99 [E18 error] Correct inter-unit cable Are wired remote controller 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. from terminal block of indoor unit? Is indoor unit switch SW02 setting corrent? Correct switch setting Bit 1: OFF...
  • Page 100 [E09 error] Are 2 headers set by Correct one header/one follower. double wired remote controller? (Wired remote controller address connector) Check wired remote controller board. → Replace it if necessary. [E18 error] Are A/B wires normal? Correct wired remote controller wire connection. Improper harness connection Correct connector connection.
  • Page 101 [L30 error] Are outside devices of Check indoor P.C. board (MCC-1510). Defect → Replace connector CN80 connected? Check outside devices. Do outside devices normally work? Defect → Replace Check cause of operation. [F10 error] Is connection of TA sensor connector Correct connection of connector.
  • Page 102 [P12 error] Turn OFF the breaker. Turn it ON 10 seconds after. Does fan stop Is min. 1V DC present Replace with operation OFF? between CN210 pin + and – ? indoor unit fan motor. Start cooling Replace indoor unit with LOW fan speed.
  • Page 103 [F02 error] Is connection of TC sensor connector Correct connection of connector. (CN101 on Indoor P.C. board) correct? Are characteristics of Replace TC sensor. TC sensor resistance value normal? ∗ Refer to Characteristics-2. Check indoor P.C. board (MCC-1510). Defect → Replace [F01 error] Is connection of TCJ sensor connector Correct connection of connector.
  • Page 104 8-3-5. Indoor Unit n Temperature semsor characteristics Characteristic-1 Indoor TA sensor [10] [20] [30] [40] [50] Temperature (˚F [˚C]) Characteristic-2 Indoor TC sensors –22 –4 [–30] [–20] [–10] [10] [20] [30] [40] [50] [60] [70] [80] [90] [100] Temperature (˚F [˚C]) –...

  • Page 105: Replacement Of Service P.c. Board

    9. REPLACEMENT OF SERVICE P.C. BOARD 9-1. 4-Way Air Discharge Cassette Type / Under Ceiling Type <Note: when replacing the P.C. board for indoor unit servicing> The nonvolatile memory (hereafter called EEPROM) 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 SET 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 106 [1] SET DATA read out from EEPROM The SET DATA modified on the site, other than factory-set value, stored in the EEPROM shall be read out. Step 1 Push button on the remote controller simultaneously for more than 4 seconds. TEST ∗...
  • Page 107 <In case of 4-way Discharge Cassette type> Connector (CN504) If the plug for short-circuit is attached on the P.C. board for drain pump before replacement, attach it on the P.C. board replaced. CAUTION Be sure to set the jumper wire since the motor protection level setting selection is performed on it.
  • Page 108 Step 4 Write the on-site SET DATA to the EEPROM, such as address setting, etc. Perform the steps 1 and 2 above again. Step 5 Change the CODE No. (DN) to “ ” by pushing buttons for the temperature setting. (this is the setting for the filter sign lighting time.) Step 6 Check the SET DATA displayed at this time with the SET DATA put down in [1].
  • Page 109 Table 1. SET DATA (CODE No. table (example)) CODE No.(DN) Item SET 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...

  • Page 110: High Wall Type

    9-2. High Wall Type Model type P.C. board model Label display on P.C. board RAV-SP KRT-UL series MCC-1510 04DD 03 [Requirement when replacing the service indoor P.C. board assembly] In the non-volatile memory (Hereinafter said EEPROM, IC10) installed on the indoor P .C. board before replacement, the type and capacity code exclusive to the corresponding model have been stored at shipment from the factory and the important setup data such as refrigerant line /indoor unit /group address in (AUTO/MANUAL) mode have been stored at installation.
  • Page 111 H1 Readout of the setup data from EEPRO (Data in EEPROM contents, which have been changed at the local site, are read out together with data in EEPROM set at shipment from the factory.) TEST 1. Push buttons of the remote controller at the same time for 4 seconds or more. (Corresponded with No.
  • Page 112 H2 Replacement of service P.C. board 1. Replace the P .C. board with a service P .C. board. In this time, setting of jumper line (cut) or setting of DIP switch on the former P .C. board should be reflected on the service P .C.
  • Page 113 P.C. board parts layout drawing <MCC-1510> SW02 SW01 DIP switch (SW01, SW02) IC10 EEPROM (IC10) Method of DIP switch setting At shipment Selected content RAV-SP KRT-UL series Bit 1 Terminator resistor (for central control) OFF (Without terminator) SW01 Bit 2 Remote controller A/B selection OFF (A selection) Bit 1...
  • Page 114 H3 Writing of the setup contents to EEPROM (The contents of EEPROM installed on the service P .C. board have been set up at shipment from the factory.) TEST 1. Push buttons of the remote controller at the same time for 4 seconds or more. (Corresponded with No.
  • Page 115 CODE No. (DN) table (Please record the objective unit data at field) Item Memo At shipment Filter sign lighting time 0001: 150 hour Dirty state of filter 0000: Standard Central control address 0099: Unfixed Heating suction temp shift 0002: +3.6°F (+2°C) PRE-DEF indication selection 0000: Standard Cooling auto mode existence...

  • Page 116: Setup At Local Site And Others

    10. SETUP AT LOCAL SITE AND OTHERS 10-1. 4-Way Air Discharge Cassette Type / Under Ceiling Type 10-1-1. Test Run Setup on Remote Controller <Wired remote controller> 1. When pushing TEST button on the remote controller for 4 seconds or more, “TEST” is displayed on LC display. Then push ON / OFF button.
  • Page 117 (Wireless remote controller kit) Remove a screw which fixes the name plate of the receiver part on the wireless remote controller. Remove the nameplate of the reciver section by inserting a minus screwdriver, etc. into the notch at the bottom of the plate, and set the Dip switch to [TEST RUN ON]. Execute a test operation with button on the wireless remote controller.
  • Page 118 <In case of wireless remote controller> Procedure Description Turn on power of the air conditioner. The operation is not accepted for 5 minutes when power has been turned on at first time after installation, and 1 minute when power has been turned on at the next time and after. After the specified time has passed, perform a test operation.
  • Page 119 10-1-2. Forced Defrost Setup of Remote Controller (For wired remote controller only) (Preparation in advance) TEST Push buttons simultaneously for 4 seconds or more on the remote controller. (Push buttons while the air conditioner stops.) The first displayed unit No. is the master indoor unit address in the group control. Every pushing button, the indoor unit No.
  • Page 120 10-1-4. Function Selection Setup <Procedure> Perform setting while the air conditioner stops. TEST Push buttons simultaneously for 4 seconds or more. The first displayed unit No. is the header indoor unit address in the group control. In this time, fan and louver of the selected indoor unit operate. ò...
  • Page 121 Function selection CODE No. (DN) list CODE No. (DN) 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 0000: Standard Filter stain level 0000: Standard 0001: Heavy stain (Half of standard time) 0001: No.1 unit...
  • Page 122 CODE No. At shipment Item Contents (DN) from factory 0000: None 0000: 0.5 h to 0.012: 0 h Self-clean operation time Set when compressor-ON time is 10 to 60 minutes. 0002: 1 hour (4-Way Air Discharge Cassette Type only) When ON-time is 60 minutes or more, the double of this operation time setting is set.
  • Page 123 10-1-5. Wiring and Setting of Remote Controller Control 2-remote controller control <Wireless remote controller> (Controlled by 2 remote controllers) How to set wireless remote controller to sub This control is to operate 1 or multiple indoor units remote controller are operated by 2 remote controllers. Change OFF of Bit [3: Remote controller Master/Sub] (Max.
  • Page 124 10-1-6. 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 125 10-1-7. Calling of error history <Contents> The error history in the past can be called. <Procedure> TEST Push buttons simultaneously for 4 seconds or more to call the service check mode. TEMP. ON / OFF Service Check goes on, the CODE No. 01 is displayed, and then the content of the latest alarm is displayed.
  • Page 126 n Indoor unit power-ON sequence Power ON • The unit without power feed waits entirely → Waiting status is released by system start • Reboot when power is fed on the way <By feed unit> <Automatic address judgment> Not normal 3 minutes elapse Gr construction check Normal...
  • Page 127 10-1-9. How to set up type of swing ∗ Dual swing (Recommended for heating operation) <4-Way Discharge Cassette Type only> • The adjoined louvers repeat horizontal discharge/Downward discharge alternately Push SWING/FIX for 4 seconds or more during stop of to clear irregularity of the temperature in the operation.
  • Page 128 10-1-10. How to set louver lock (Louver fix) <4-Way Discharge Cassette Type only> Refrigerant pipe Push (At the right side of the button) for UNIT LOUVER Electric parts box 4 seconds or more during stop of the operation. • flashes. Drain pipe Push (At the left side of the button) and...
  • Page 129 10-1-13. When installing separately sold filters REQUIREMENT • When you use this air conditioner for the first time, it takes approx. 5 minutes until the remote controller becomes available after power-on. This is normal. <When power is turned on for the first time after installation> Approx.
  • Page 130 When wireless remote controller is used Be sure to make ceiling setting when installing separately sold filters. Change the high-ceiling and filter settings with the ∗ Separately sold filters cannot be installed in an DIP switch on the receiver section P .C. board. indoor unit on a high ceiling.

  • Page 131: High Wall Type

    10-2. High Wall Type 10-2-1. Test Run Setup on Remote Controller <Wired remote controller> TEST 1. When pushing button on the remote controller for 4 seconds or more, “TEST” is displayed on LC display. ON / OFF Then push button. •...
  • Page 132 10-2-2. Forced Defrost Setup of Remote Controller (For wired remote controller only) (Preparation in advance) Push buttons simultaneously for 4 seconds or more on the remote controller. TEST (Push buttons while the air conditioner stops.) The first displayed unit No. is the master indoor unit address in the group control. Every pushing button, the indoor unit No.
  • Page 133 10-2-4. Function Selection Setup (Wired Remote Controller Only) <Procedure> Perform setting while the air conditioner stops. Push buttons simultaneously for 4 seconds or more. TEST The first displayed unit No. is the header indoor unit address in the group control. In this time, fan and louver of the selected indoor unit operate.
  • Page 134 Function selection CODE No. (DN) list CODE No. At shipment Item Contents (DN) from factory 0000: None 0001: 150H Filter sign lighting time 0002: 2500H 0003: 5000H 0001: 150H 0004: 10000H 0005: Clogging sensor used 0000: Standard Filter stain level 0000: Standard 0001: Heavy stain (Half of standard time) 0001: No.1 unit...
  • Page 135 10-2-5. Wiring and Setting of Remote Controller Control 2-remote controller control <Wireless remote controller A-B selection> (Controlled by 2 remote controllers) Using 2 wireless remote controllers for the respective air conditioners, when the 2 air conditioners are This control is to operate 1 or multiple indoor units are operated by 2 remote controllers.
  • Page 136 10-2-6. Monitor Function of Remote Controller Switch n Calling of sensor temperature display <Contents> Each data of the remote controller, indoor unit and outdoor unit can be understood by calling the service monitor mode from the remote controller. <Procedure> Push buttons simultaneously for 4 seconds to TEST call the service monitor mode.
  • Page 137 10-2-7. Calling of error history <Contents> The error contents in the past can be called. <Procedure> Push TEST buttons simultaneously for TEMP. ON / OFF 4 seconds or more to call the service check mode. Service Check goes on, the CODE No. 01 is displayed, and TIMER SET MODE then the content of the latest alarm is displayed.
  • Page 138 n Indoor unit power-ON sequence Power ON • The unit without power feed waits entirely → Waiting status is released by system start • Reboot when power is fed on the way <By feed unit> <Automatic address judgment> Not normal Gr construction check 3 minutes elapse Normal...

  • Page 139: Address Setup

    11. ADDRESS SETUP 11-1. 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 140: Address Setup & Group Control

    11-2. 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 Heade unit (= 1) : The representative of multiple indoor units in group operation sends/receives signals to/...
  • Page 141 n Changing of settings for Fahrenheit display (4-Way Air Discharge Cassette Type / Under Ceiling Type) • When you use this air conditioner for the first time, it takes approx. 5 minutes until the remote controller becomes available after power-on. Procedure Push simultaneously TEST...

  • Page 142: Remote Controller Wiring

    11-3. Remote Controller Wiring • Strip off approx. 9 mm the wire to be connected. • For single system, use non polarity, 2 core wire is used for wiring of the remote controller. (0.5 mm² to 2.0 mm² wires) • For the synchronous twin, triple system, use 2-conre shield wire (Vinyl cord for microphone 0.5 to 2.0 mm²) to conform to the EMC standard.

  • Page 143: Address Setup (Manual Setting From Remote Controller)

    11-4. Address Setup (Manual setting from remote controller) In case that addresses of the indoor units will be (Example of 2-lines wiring) determined prior to piping work after wiring work (Real line: Wiring, Broken line: Refrigerant pipe) • Set an indoor unit per a remote controller. Outdoor Outdoor •...

  • Page 144: Confirmation Of Indoor Unit No. Position

    11-5. 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 145 <Maintenance> Periodic Maintenance - periodic maintenance is recommended to ensure proper operation of the unit. Recommended maintenance intervals may vary depending on the installation environment, e.g. dusty zones, etc. Refer to table below. Periodic Maintenance INDOOR UNIT EVERY MONTH EVERY 4 MONTHS EVERY YEAR Clean Air Filter ∗1 1 (2)
  • Page 146 n Changing of settings for Fahrenheit display • When you use this air conditioner for the first time, it takes approx. 5 minutes until the remote controller becomes available after power-on. TEST Procedure Push simultaneously buttons for 4 seconds or more. TEST TEMP.

  • Page 147: Detachments

    12. DETACHMENTS 12-1. 4-Way Air Discharge Cassette Type RAV-SP180UT-UL, RAV-SP240UT-UL, RAV-SP300UT-UL, RAV-SP360UT-UL, RAV-SP420UT-UL WARNING Be sure to turn off the power supply and the breaker and then start a work. CAUTION Be sure to put on the gloves at disassembling work; otherwise an injury will be caused by a part, etc. Part name Procedure Remarks...
  • Page 148 Part name Procedure Remarks 1. Detachment Electric parts cover Bell mouth pin Claw of 1) Carry out work of Detachment of electric parts box Potbelly hole 2) Remove the fixing screw “A” which fixes (Dharma doll hole) the electric parts cover and loosen the fixing screw “B”.
  • Page 149 Part name Procedure Remarks 1. Detachment Adjust corner Knob 1) Pull knob of the adjust corner cap to the arrow direction, remove strap of the Pulling direction Pulling direction Pulling direction adjust corner cap from pin of the panel and then remove all the 4 corners of the cap.
  • Page 150 Part name Procedure Remarks 1. Detachment Ceiling panel Clamp 1) Carry out works of Detachment of 2) Remove the louver connector Louver motor wiring Louver motor wiring Louver motor wiring (CN510, White, 20P) connected to the control P .C. board and then remove the lead wire from the clamp.
  • Page 151 Part name Procedure Remarks 1. Detachment Control P .C. board Clamp 1) Carry out work of Detachment of 2) Remove connectors which are connected from the control P .C. board to the other parts and then remove wiring from the clamp. CN510 : Louver motor (20P , White) CN34 : Float switch (3P , Red) CN504 : Drain pump (2P , White)
  • Page 152 Part name Procedure Remarks 1. Detachment Drain cap Drain cap (outside) 1) Carry out work of Detachment of 2) Loosen screws (3 positions) fixing the drain cap (outside) and then turn the drain cap to the arrow mark → (OPEN) direction to remove it.
  • Page 153 Part name Procedure Remarks 1. Detachment Fan motor Power supply 1) Carry out work of Detachment of terminal block 2) Remove the power supply wire and the remote controller wire from the power supply terminal block and the remote controller terminal block each. Remote controller Cord clamps After then remove the cord clamps (2 positions)
  • Page 154 Part name Procedure Remarks Fan motor 2) Fix the fan motor lead, TC sensor and TCJ (Continued) sensor with the clamp of the bell mouth. M6 nut 3) Mount the electric parts box with the fixing screws “A and B”. (M4, 10 mm, 3 pcs.
  • Page 155 Part name Procedure Remarks 1. Detachment Drain pump Fixing screw “A” 1) Carry out works of Detachment of 2) Remove the drain pump connector Drain port Drain port Drain port (CN504, White, 2P) connected to the control P .C. board and then remove the lead wire from the clamp.
  • Page 156 Part name Procedure Remarks 1. Detachment Float switch assembly 1) Carry out works of Detachment of Float switch assembly Float switch assembly Float switch assembly works from 1) to 7). 2) Remove the fixing screw and then remove the float switch assembly. (M4, 25 mm, 1 pc.) 2.
  • Page 157 Part name Procedure Remarks 1. Detachment Heat exchanger 1) Recover the refrigerant gas. 2) Carry out work of Detachment of 3) Remove refrigerant pipe at indoor unit side. 4) Remove the fixing screws and then remove the piping cover. Fixing screws (M4, 10 mm, 3 pcs.) 5) Remove the drain hose from the drain Piping cover...

  • Page 158: Under Ceiling Type

    12-2. Under Ceiling Type RAV-SP180CT-UL, RAV-SP240CT-UL, RAV-SP300CT-UL, RAV-SP360CT-UL, RAV-SP420CT-UL WARNING Stop the operation of the air conditioner and then turn off switch of the breaker. CAUTION Be sure to put on the gloves at disassembling/assembling work; otherwise an injury will be caused by a part, etc. Part name Procedure Remarks...
  • Page 159 Part name Procedure Remarks 1. Detachment Electric parts cover 1) Carry out work of Detachment of Clamps 2) Remove the screws (2 pcs.) which are fixing the fan guard. CAUTION Remove the 2 screws fixing the fan guard and hang the fan guard with the clamps during a service.
  • Page 160 Part name Procedure Remarks 1. Detachment Electric parts box 1) Carry out works of Detachment of 2) Remove the power supply wire and the remote controller wire from the power supply terminal block and the remote controller terminal block each. 3) Remove the power supply wire from cord clamp at side of the electric parts box.
  • Page 161 Part name Procedure Remarks 1. Detachment Control P .C. board Card edge spacer Earth wire 1) Carry out works of Detachment of of P .C. board and 3 . 2) Remove connectors and earth wire which are connected from the control P .C. board to other parts.
  • Page 162 Part name Procedure Remarks Fan, Shaft, Fan quantity and mounting construction Bearing, Coupling, Model name Quantity Mounting construction Hooking claw Hooking claw Hooking claw Fan case Direct mounting to both sides of SP180CT-UL 2 fans fan motor Shaft is used and one side of SP240CT-UL 3 fans shaft is supported by bearing.
  • Page 163 Part name Procedure Remarks 2. Attachment Fan, Shaft, Bearing, 1) Mount a fan to the shaft. Refereeing to the Arrange so that screws are at right side Arrange so that screws are at right side Arrange so that screws are at right side Coupling, against the bottom make-up panel.
  • Page 164 Part name Procedure Remarks 1. Detachment Fan motor Fan motor 1) Carry out works 1), 2), 3) and 5) of Detachment of 1 . 2) Remove wires and connectors which are connected from the control P .C. board to the fan motor.
  • Page 165 Part name Procedure Remarks 1. Detachment Fan guard 1) Carry out work of Detachment of Clamps 2) Remove the screws (2 pcs.) which are fixing the fan guard. 3) Remove the fan guard by removing screws which fix the clamp. 2.
  • Page 166 Part name Procedure Remarks 1. Detachment Drain pan 1) Carry out work of Detachment of 2) Take off the drain cap and then extract drain water accumulated in the drain pan. Drain hose Drain hose Drain hose NOTE : When taking off the drain cap, be sure to receive drain water by a bucket, etc.
  • Page 167 Part name Procedure Remarks 1. Detachment Heat exchanger Piping holder Piping holder Piping holder 1) Recover the refrigerant gas. 2) Remove the refrigerant piping at the indoor unit side. 3) Carry out work of Detachment of 4) Remove screws which fix the piping holder and take off the piping holder.
  • Page 168 Part name Procedure Remarks 1. Detachment Louver motor, Screws Louver drive 1) Carry out work of Detachment of (Fixing louver drive member and main unit) member 2) Remove connectors of the louver motor lead wire. 3) Remove the set screws (2 positions) Louver drive Louver drive Louver drive...

  • Page 169: High Wall Type

    12-3. High Wall Type RAV-SP180KRT-UL, RAV-SP240KRT-UL WARNING • Since high voltages pass through the electrical parts, turn off the power without fail before proceeding with the repairs. Electric shocks may occur if the main power supply switch or breakers are not turned off. •...
  • Page 170 Part name Procedures Remarks  Front panel 1) Stop operation of the air conditioner and turn off its main power supply. 2) Open the air inlet grille, push the arm toward the outside, and remove the grille. 3) Push “PUSH” part under the front panel and remove hooks of the front panel from the Installation plate installation plate.
  • Page 171 Part name Procedures Remarks ‚  Electric parts 1) Perform work of item assembly Drain guide Drain guide Drain guide Drain guide Drain guide Drain guide 2) Take off drain guide fixing screws (2pcs) Connector cover Connector cover Connector cover fixing screw fixing screw fixing screw...
  • Page 172 Part name Procedures Remarks „ ƒ Evaporator 1) Follow to the procedure in the item (Heat exchanger) 2) Remove the pipe holder from the rear side of the main unit. 3) Remove 2 fixing screws at the left side of the end plate of the heat exchanger. 2 screws 4) Remove 2 fixing screws on the heat exchager fixing holder to separate the...
  • Page 173 Part name Procedures Remarks … „ Bearing 1) Follow to the procedure in the item 2) Remove the 2 screws used to secure the bearing base. 3) Remove the bearing base. 2 screws Bearing base <Caution at assembling> • If the bearing is out from the housing, push it into the specified position and then incorporate it in the main body.
  • Page 174 Part name Procedures Remarks † „ Fan motor 1) Follow to the procedure till item 2) Loosen the set screw of the cross flow fan. 3) Remove 2 fixing screws of the motor cover and them remove the motor cover. 4) Remove 2 more fixing screws of the motor band and remove the motor band.
  • Page 175 Part name Procedures Remarks ‡ <Caution at reassembling> Cross flow 1) To incorporate the fan motor, remove the fan motor rubber (at shaft core side), incorporate the motor into the position in the following figure, and then install the fan motor.

  • Page 176: Exploded Views And Parts List

    13. EXPLODED VIEWS AND PARTS LIST 13-1. 4-Way Air Discharge Cassette Type RAV-SP180UT-UL, RAV-SP240UT-UL, RAV-SP300UT-UL, RAV-SP360UT-UL, RAV-SP420UT-UL 223, 219, 220, 221, 204, 205 222, 240, 241 220, 222, 253, 254, 214, 251, 252, 253, 254, 255, 256 216, 217 – 176 –...
  • Page 177 Model Name RAV-SP Location Part No. Description 180UT-UL 240UT-UL 300UT-UL 360UT-UL 420UT-UL 43120247 Fan, Ass’y, Turbo 43120248 Fan, Ass’y, Turbo 43166013 Remote Controller, SX-TA01UE 4314J399 Refrigeration Cycle Ass’y 4314J400 Refrigeration Cycle Ass’y 4314J401 Refrigeration Cycle Ass’y 43122110 Bell Mouth 43172209 Pan Ass’y, Drain 43166015 Remote Controller, SX-UA01UE...
  • Page 178 <4-Way Air Discharge Cassette Type Electric Parts> Model Name Location Part No. Description RAV-SP180UT-UL, 240UT-UL, 300UT-UL, 360UT-UL, 420UT-UL 43050425 Sensor Ass’y, TC (F6) 43050426 Sensor, TA 43160607 Terminal, Block, 3P , AC250V, 20A 43160568 Terminal, 2P , AC30V/DC42V, 1A 4316V407 P.C.
  • Page 179 RBC-U31PG (W)-UL Model Name Location Part No. Description RBC-U31PG (W)-UL 43409207 Grille, Air Inlet 43480017 Air Filter 4302D003 Motor, Louver 43407145 Outlet, Air Form 43407146 Outlet, Air Form 43409212 Louver 43401037 Cover, Panel Ass’y 43101358 Cover, Panel Ass’y 43407148 Plate, Fix, Panel 43407149 Plate, Fix, Panel 43407150...
  • Page 180 RBC-AX31U (W)-UL Model Name Location Part No. Description RBC-AX31U (W)-UL 43459011 P.C. Board Ass’y, Remote Receiver 43462010 Cover, WRS 43461006 Sheet 43108018 Cover, Panel, WRS 43160599 Lead – 180 –...

  • Page 181: Under Ceiling Type

    13-2. Under Ceiling Type RAV-SP180CT-UL, RAV-SP240CT-UL, RAV-SP300CT-UL, RAV-SP360CT-UL, RAV-SP420CT-UL 244, 245, 246 201, 202, 203 222, 223, 224 236, 237, 238, 239, 254, 255 233, 234, 235, 253, 256, 257 269, 270, 271 207, 208, 209 204, 205, 206 RAV-SP180CT-UL RAV-SP240CT-UL (Fan assembly) (Fan assembly)
  • Page 182 Nut, Flare, 3/8 IN 43049697 Bonnet 43019904 Holder, Sensor 431S8135 Owner’s Manual 43121746 Driver Ass’y Horizontal Louver 43160556 Lead, Louver Horizontal 43108020 Mark, TOSHIBA 43196012 Bushing 43162050 Bushing, 56 DIA 43197189 Screw, Fix Drain Pan 43107252 Shaft, Horizontal Louver 43139153 Spacer, Bearing 43162059...
  • Page 183 <Under Ceiling Type Electric Parts> Model Name RAV-SP Location Part No. Description 180CT-UL 240CT-UL 300CT-UL 360CT-UL 420CT-UL 43050425 Sensor, TC (F6) 43050426 Sensor, TA 43158193 Reactor, CH-43-2Z-T 43160568 Terminal, 2P , AC30V/DC42V, 1A 43160607 Terminal Block, 3P , AC250V, 20A 4316V406 P.C.
  • Page 184 RBC-AX22CUL Model Name Location Part No. Description RBC-AX22CUL 43459012 P.C. Board (MCC-1504) 43408030 Cover, Receiver 43108014 Base, Receiver 43160601 Lead 43108021 Mark, TOSHIBA – 184 –...
  • Page 185 TCB-AX21UL Model Name Location Part No. Description TCB-AX21UL 4316V409 Receiver, Unit, CR-BH1AG-R – 185 –...

  • Page 186: Replacement Of Main Parts (Sold Separately)

    13-3. Replacement of Main Parts (Sold Separately) 13-3-1. Drain up Kit TCB-DP22CUL Part name Procedure Remarks  Drain pan 1. Remove the Drain up kit from the main Screws unit. (Fixing drain pan and main unit) 2. Remove the set screws (2 positions) and drain pan.
  • Page 187 13-3-2. Wireless Remote Controller Kit RBC-AX22CUL Part name Procedure Remarks  P .C. board 1. Remove the signal receiving unit from main unit. 2. Remove the set screw (1 position) and P .C. board cover. 3. Remove the P .C. board. 1 -2 Screw P.C.

  • Page 188: High Wall Type

    For orders of the service parts for High Wall type air conditioners, please check the service parts on Web site of [TOSHIBA CARRIER THAILAND CO., Ltd.], and then place an order for parts to (TOSHIBA CARRIER THAILAND CO., Ltd.). Location Location Part No.

  • Page 189: Electric Parts

    For orders of the service parts for High Wall type air conditioners, please check the service parts on Web site of [TOSHIBA CARRIER THAILAND CO., Ltd.], and then place an order for parts to (TOSHIBA CARRIER THAILAND CO., Ltd.). Location Location Part No.
  • Page 190 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 191 TOSHIBA CARRIER CORPORATION 23-17, TAKANAWA 3 CHOME, MINATOKU, TOKYO, 108-8580, JAPAN Copyright © 1999 to 2007 TOSHIBA CARRIER CORPORATION, ALL Rights Reserved.

This manual is also suitable for:

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