Hisense AMW2-14U4RRA Technical & Service Manual
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Hisense AMW2-14U4RRA Technical & Service Manual

Multi-split type air conditioners
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TECHNICAL&SERVICE MANUAL
Models:
<Outdoor Unit>
AMW2-14U4RRA
2AMW-42U4RRA
AMW2-18U4RXA
2AMW-50URXA
AMW3-24U4RAA
3AMW-70U4RAA
AMW4-27U4RAA
4AMW-81U4RAA
AMW4-36U4RAA
4AMW-105U4RAA
—MULTI-SPLIT TYPE AIR CONDITIONERS
R32
R410A
R410A
R410A
V2.0

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Summary of Contents for Hisense AMW2-14U4RRA

  • Page 1 R410A R410A R410A TECHNICAL&SERVICE MANUAL V2.0 —MULTI-SPLIT TYPE AIR CONDITIONERS Models: <Outdoor Unit> AMW2-14U4RRA 2AMW-42U4RRA AMW2-18U4RXA 2AMW-50URXA AMW3-24U4RAA 3AMW-70U4RAA AMW4-27U4RAA 4AMW-81U4RAA AMW4-36U4RAA 4AMW-105U4RAA...

  • Page 2: Table Of Contents

    Multi-Split Type Air Conditioner Service Manual Table of Contents 1.General ............................1 1.1 Features ..........................1 1.2 Product lineup ........................2 1.3 Model identification ......................3 1.4 Working range ........................4 1.5 Product picture ........................4 2. Specifications ..........................6 3.

  • Page 3: General

    1 1 . . G G E E N N E E R R A A L L 1.General 1.1 Features  Twin Rotary DC Inverter Compressor The twin rotary inverter compressor design reduces friction during operation for smoother rotation with less vibration, while also preventing leakage of refrigerant gas during compression.
  • Page 4 1 1 . . G G E E N N E E R R A A L L  Comfortable temperature control DC inverter power control uses its full capacity at startup to cool/warm quickly. As soon as the set temperature is reached, it carefully adjusts current frequency to prevent temperature fluctuation and energy loss.

  • Page 5: Product Lineup

    1 1 . . G G E E N N E E R R A A L L 1.2 Product lineup Outdoor Unit Type Model Dual AMW2- ● ● Trio AMW3- ● Quattro AMW4- ● ● ●--- available model...

  • Page 6: Model Identification

    1 1 . . G G E E N N E E R R A A L L 1.3 Model identification 1.4 Working range Power Supply Working Voltage 220-240V ~，50Hz Within a 3% deviation from each voltage at the main Voltage Imbalance terminal of outdoor unit Higher than 85% of the Rated Voltage...

  • Page 7: Product Picture

    1 1 . . G G E E N N E E R R A A L L 1.5 Product picture Outdoor Unit Type Capacity(KBtu/h) View Dual Trio Quattro...

  • Page 8: Specifications

    2 indoor up to 2 indoor up to 4 indoor up to 4 indoor up to 3 indoor Type(Free Match) units units units units units Model Name AMW2-14U4RRA AMW2-18U4RXA AMW3-24U4RAA AMW4-27U4RAA AMW4-36U4RAA Performance Pdesign 10.0 Cooling Pdesign Heating Capacity 4.1(1.4～5.5)
  • Page 9 3 indoor up to 2 indoor up to 2 indoor up to 4 indoor up to 4 indoor Type(Free Match) units units units units units Model Name AMW2-14U4RRA AMW2-18U4RXA AMW3-24U4RAA AMW4-27U4RAA AMW4-36U4RAA Cooling 4.35 10.0 13.8 Rated current Heating 4.35...

  • Page 10: Outlines And Dimensions

    3 3 . . O O U U T T L L I I N N E E S S A A N N D D D D I I M M E E N N S S I I O O N N S S 3.
  • Page 11 3 3 . . O O U U T T L L I I N N E E S S A A N N D D D D I I M M E E N N S S I I O O N N S S (UNIT:mm) Electric box Gas pipe...
  • Page 12 3 3 . . O O U U T T L L I I N N E E S S A A N N D D D D I I M M E E N N S S I I O O N N S S (UNIT:mm)
  • Page 13 3 3 . . O O U U T T L L I I N N E E S S A A N N D D D D I I M M E E N N S S I I O O N N S S (UNIT:mm)
  • Page 14 3 3 . . O O U U T T L L I I N N E E S S A A N N D D D D I I M M E E N N S S I I O O N N S S...

  • Page 15: Electrical Data

    4.ELECTRICAL DATA 4.Electrical data Power supply Applicable voltage Nominal Outdoor Voltage(V) Frequency Umin Umax(V) Nominal Sensitive unit Current(mA) Current(A) 2 20-240 2 20-240 2 20-240 2 20-240 2 20-240 NOTE The above compressor data is based on 100% capacity combination of indoor units at the rated operating frequency This data is based on the same conditions as the nominal heating and cooling capacities.

  • Page 16: Capacities And Selection Data

    5. CAPACITIES AND SELECTION DATA 5.1 Capacity characteristic charts The following charts show the characteristics of outdoor unit capacity, which corresponds with the operating ambient temperature of outdoor unit. Conditions: ① Pipe length / height difference : 5m / 0m ②Compressor at rated inverter frequency ③...
  • Page 17 5. CAPACITIES AND SELECTION DATA COOLING CAPACITY(kW) Outdoot air intake temp ℃DB Indoor temperature (℃WB) (℃DB) 4.26 4.26 4.26 4.32 4.42 4.06 3.90 5.04 5.04 5.10 5.15 5.20 4.73 4.16 5.51 5.56 5.62 5.67 5.82 4.94 4.42 (℃ DB) : Dry Bulb Temperature (℃) (℃...
  • Page 18 5. CAPACITIES AND SELECTION DATA HEATING CAPACITY(kW) Indoor temperature Outdoot air intake temp ℃WB (℃DB) 6.40 7.04 7.36 8.08 8.24 8.64 8.00 6.56 7.20 7.60 8.16 8.40 8.80 8.16 6.00 6.24 6.56 7.12 7.60 7.20 6.80 (℃ DB) : Dry Bulb Temperature (℃) (℃...
  • Page 19 5. CAPACITIES AND SELECTION DATA COOLING CAPACITY(kW) Outdoot air intake temp ℃DB Indoor temperature (℃WB) (℃DB) 8.20 8.20 8.20 8.30 8.50 7.80 7.50 9.70 9.70 9.80 9.90 10.00 9.10 8.00 10.60 10.70 10.80 10.90 11.20 9.50 8.50 (℃ DB) : Dry Bulb Temperature (℃) (℃...

  • Page 20: Piping Length Correction Factor

    5. CAPACITIES AND SELECTION DATA 5.2 Piping length correction factor Pipe length L Indoor unit Height difference H Outdoor unit The correction factor is based on the equivalent piping length in meters (EL) and the height between outdoor and indoor units in meters (H). Height between indoor unit and outdoor unit (m).

  • Page 21: Correction Factors According To Defrosting Operation

    5. CAPACITIES AND SELECTION DATA The correction factor of height between indoor unit and outdoor unit Height difference 0.95 0.88 0.75 Factor In order to ensure correct unit selection, consider the fartest indoor unit. NOTE Data above is assuming a height difference between indoor and outdoor of 0m. Be sure to minimize lenght of connection pipes in order to optimize performance.

  • Page 22: Sound Pressure Data

    S S O O U U N N D D P P R R E E S S S S U U R R E E D D A A T T A A 6. Sound pressure data . Model AMW2-14URR4 1.0m ahead of the unit;...

  • Page 23: Refrigerant Cycle

    7.REFRIGERANT CYCLE 7. Refrigerant cycle INDOOR UNIT OUTDOOR UNIT UNIT A 4-WAY VALVE UNIT B UNIT B FILTER UNIT A Cooling cycle 14K/18K Heating cycle INDOOR UNIT OUTDOOR UNIT UNIT A 4-WAY VALVE UNIT B UNIT C UNIT D COMPRESSOR UNIT D UNIT C UNIT B...

  • Page 24: Wiring Diagram

    8 . WIRING DIAGRAM 8.Wiring diagram 8.1 Electrical wiring diagrams 14K/18K...
  • Page 25 8.WIRING DIAGRAM...
  • Page 26 8.WIRING DIAGRAM 27K/36K...

  • Page 27: Electric Control Board

    8.WIRING DIAGRAM 8.2 Electric control board 14K/18K Reactor L1 Compressor Reactor L2 Compressor Compressor motor Discharge sensor coil/suction/air sensor compressor overheat GasB SI-B switch sensor liquidA/liquidB/ GasA sensor SI-N AC NIN AC LIN SI-A Electronic Electronic expansion expansion valve a valve B...
  • Page 28 8.WIRING DIAGRAM 24K、27K、36K...

  • Page 29: Running Parameter Query

    1 .3 Running Parameter Q 8.WIRING DIAGRAM 8.3 Running Parameter Query It can be used to check outdoor running parameters. There are 3 buttons on the digital display board： 1)Select button：Select the corresponding parameters of the serial number when it is pressed.
  • Page 30 8.WIRING DIAGRAM Parameter Parameter Quattro Descriptions Dual Note Trio code Query Electronic expansion valve ○ ● ● ◇ Opening(B) Electronic expansion valve ○ ● ● ◇ Opening(C) Electronic expansion valve ○ ○ ● ◇ Opening(D) DC Motor Set Speed ● ●...

  • Page 31: Common Wiring

    8.WIRING DIAGRAM 8.4 Common Wiring Outdoor unit Terminal Terminal A Power connecting 1(L) cord 1(L) Indoor unit A 2(N) 2(N) Terminal 4(SI) 4(SI) Terminal B Power connecting cord 1(L) 1(L) Indoor unit B 2(N) 2(N) Terminal 4(SI) 4(SI) 1(L) 2(N) Terminal C Power connecting cord...
  • Page 32 8.WIRING DIAGRAM Electrical Data Power Source Transmitting Cable Size Cable Size Power Supply Rated Nominal Model EN60335-1*1 EN60335-1*1 Current(A) Sensitive 14K/18K 220-240V 3×1.5mm² 4×1.5mm² 220-240V 3×2.5mm² 4×1.5mm² 24K/27K/36K Max. Running Current(A):REFER TO NAMEPLATE Note: Follow local codes and regulations when select field wires ,and all the above are the minimum wire size.

  • Page 33: Sensor Parameter

    8.WIRING DIAGRAM 8.5 Sensor parameter 1. THE PARAMETER OF OUTDOOR COMPRESSOR DISCHARGE TEMPERATURE SENSOR: =187.25K±6.3%；R =3.77K±2.5K；B0/100=3979K±1%） （R T [ ℃ ] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 908.2603 985.5274 1065.1210 -7.84 7.47 855.3955 927.6043 1001.9150...
  • Page 34 8.WIRING DIAGRAM T [ ℃ ] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 137.0455 145.8905 154.7246 - - 6.0 5.71 130.5528 138.9097 147.2544 - - 6.0 5.67 124.4033 132.3011 140.1856 - - 5.9 5.62 118.5769 126.0429...
  • Page 35 8.WIRING DIAGRAM T [ ℃ ] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 23.0530 24.0950 25.1293 - - 4.3 4.12 22.1757 23.1688 24.1545 - - 4.2 4.08 21.3360 22.2826 23.2221 - - 4.2 4.05 20.5321 21.4345...
  • Page 36 8.WIRING DIAGRAM T [ ℃ ] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 5.4777 5.6413 5.8042 - - 2.9 2.81 5.3076 5.4644 5.6205 - - 2.8 2.78 5.1435 5.2937 5.4433 - - 2.8 2.75 4.9853 5.1292...
  • Page 37 8.WIRING DIAGRAM T [ ℃ ] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 1.6514 1.7071 1.7638 - - 3.2 3.21 1.6076 1.6623 1.7180 - - 3.2 3.24 1.5652 1.6189 1.6736 - - 3.3 3.27...
  • Page 38 8.WIRING DIAGRAM 2. THE PARAMETER OF THE OTHER SENSOR IN INDOOR AND OUTDOOR UNIT： （R =15K ±2%；B0/100=3450K±2%） T [ ℃ ] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 60.78 64.77 68.99 -6.16 6.12 57.75 61.36 65.16...
  • Page 39 8.WIRING DIAGRAM T [ ℃ ] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 9.999 10.230 10.450 -2.26 2.11 9.590 9.816 10.040 -2.30 2.23 9.199 9.422 9.647 -2.37 2.33 8.826 9.047 9.269 -2.44 2.40 8.470 8.689 8.910...
  • Page 40 8.WIRING DIAGRAM T [ ℃ ] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 2.158 2.286 2.421 -5.60 5.58 2.087 2.212 2.344 -5.65 5.63 2.018 2.140 2.269 -5.70 5.69 1.952 2.072 2.198 -5.79 5.73 1.888 2.005 2.129...
  • Page 41 8.WIRING DIAGRAM T [ ℃ ] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 0.6011 0.6530 0.7051 -7.95 7.39 0.5840 0.6348 0.6897 -8.00 7.96 0.5674 0.6171 0.6709 -8.05 8.02 0.5514 0.6000 0.6527 -8.10 8.07 0.5359 0.5835 0.6350...

  • Page 42: Piping Work And Refrigerant Charge

    9. PIPING WORK AND REFRIGERANT CHARGE 9.1 MAX. Refrigerant pipe length and height difference 1. Piping Requirement Outer Diameter of Pipe (mm) Model Liquid 14K/18K/24K/27K/36K 9.52 6.35 Refrigerant piping is short, the better. So the connecting pipe should be as short as possible. Indoor unit 27K/36K Model...

  • Page 43: Additional Refrigerant Charge

    9. PIPING WORK AND REFRIGERANT CHARGE NOTE: 1.When the indoor unit is lower than outdoor unit for more than 5m, an oil trap should be used on suction piping. To avoid storing too much oil in the oil trap ,the oil trap should be as short as possible. 2.The horizontal piping should be slope down along the refrigerant flow direction, to bring the oil back to compressor, the slope is about 1/200 to1/250.

  • Page 44: Control Mode

    10.CONTROL MODE 10. Control mode Cooling Anti-freeze Protection To prevent freezing caused by too low temperature of indoor evaporator, the air conditioner will implement real-time detection over the indoor coil temperature. If the indoor coil temperature is too low, the compressor will be prohibited from increasing the frequency or decrease the frequency even shut down automatically Heating Overload Protection To prevent system overload caused by excessive pressure in heating...
  • Page 45 10.CONTROL MODE To prevent working conditions of compressor from deteriorating due to high discharge temperature, the machine will implement real-time detection over the discharge temperature. If the discharge temperature grows higher, the compressor will be prohibited from increasing the frequency; if the temperature continues to rise, the compressor will decrease the frequency automatically;...
  • Page 46 C C O O N N T T R R O O L L M M O O D D E E 10 . √―――Mode conflict will not happen ×―――Mode conflict will happen Outdoor four-way Valve Control Four-way valve of the outdoor machine shuts down when cooling but starts when heating.

  • Page 47: Trouble Shooting

    11 . . T T R R O O U U B B L L E E S S H H O O O O T T I I N N G G 11.Trouble shooting 11.1 The method of identify fault codes When the air conditioner failure occurs, the fault code will displays on control board.
  • Page 48 11 . . T T R R O O U U B B L L E E S S H H O O O O T T I I N N G G Outdoor control board 14K、18K 24K、27K、36K Fault code will display on digital tube board Outdoor Control Board Digital Tube...
  • Page 49 11 . . T T R R O O U U B B L L E E S S H H O O O O T T I I N N G G 11.2 Fault codes The following is the fault code table of outdoor. Sheet 1 Outdoor Fault code Fault Fault Description...

  • Page 50: Fult Codes

    11. T T R R O O U U B B L L E E S S H H O O O O T T I I N N G G Fault Fault Description Possible Reason of Abnormality How to Deal With Remarks code 1.The connection cable connect wrong...
  • Page 51 11 . . T T R R O O U U B B L L E E S S H H O O O O T T I I N N G G Fault Fault Description Possible Reason of Abnormality How to Deal With Remarks code...
  • Page 52 11 . . T T R R O O U U B B L L E E S S H H O O O O T T I I N N G G Fault Fault Description Possible Reason of Abnormality How to Deal With Remarks code...
  • Page 53 11 . . T T R R O O U U B B L L E E S S H H O O O O T T I I N N G G The following is the fault code table of indoor. Sheet 2 Indoor fault code Fault Fault Description...
  • Page 54 1 1 1 . . T T R R O O U U B B L L E E S S H H O O O O T T I I N N G G Fault Fault Description Possible Reason of Abnormality How to Deal With Remarks code...
  • Page 55 1 1 1 . . T T R R O O U U B B L L E E S S H H O O O O T T I I N N G G Note 3:Overload in cooling mode Sheet 3 Overload in cooling mode overload in cooling mode The root cause...
  • Page 56 11 . . T T R R O O U U B B L L E E S S H H O O O O T T I I N N G G Sheet 5 Drive Fault code(14K/18K） Fault Fault Description Possible Reason of Abnormality How to Deal With code...
  • Page 57 1 1 1 . T T R R O O U U B B L L E E S S H H O O O O T T I I N N G G Sheet 6 Drive Fault code (24K/27K/36K) Fault Fault Description Possible Reason of Abnormality...
  • Page 58 11 . . T T R R O O U U B B L L E E S S H H O O O O T T I I N N G G Fault Fault Description Possible Reason of Abnormality How to Deal With code 1.Voltage input too low ;...
  • Page 59 12.CHECKING COMPONENTS 12.Checking components 12.1 Check refrigerant system TEST SYSTEM FLOW Conditions: ① Compressor is running. ② The air condition should be installed in good ventilation. Tool: Pressure Gauge Technique: ① see ② feel ③ test ----- Tube defrost. FEEL ----- The difference between tube’s temperature. TEST ----- Test pressure.

  • Page 60: Checking Components

    12.CHECKING COMPONENTS Test system flow Cooling mode Test system The pressure on the pressure.Does the low high side. pressure normal at service part ? Recharge refrigerant after air purging with If the pressure is The pressure on the the vacuum close to static low side.

  • Page 61: Check Parts Unit

    12.CHECKING COMPONENTS 12.2 Check parts unit 1.Fan motor DC motor MODEL:SIC-52FV-F130-3 MODEL:ZWA228D44B MODEL: SIC-71FW-D8121-1 MODEL: SIC-71FW-D8121-1 MODEL: SIC-71FW-D8121-1 3. COMPRESSOR COMPRESSOR EXAMINE AND REPAIR 14K: Model: GSD113RKRA8JV6 18K: Model: KTN150D42UFZ Model: KTF235D22UMT Model: KTF235D22UMT Model: KTF235D22UMT...
  • Page 62 12.CHECKING COMPONENTS Test in resistance. TOOL: Multimeter. Test the resistance of the winding. The compressor is fault if the resistance of winding 0(short circuit)or∞（open circuit） Familiar error: Compressor motor lock. Discharge pressure value approaches static pressure value . Compressor motor winding abnormality. Notes ：...
  • Page 63 12.CHECKING COMPONENTS TOOL: Multimeter. Test the resistance of winding. The stepper motor is fault if the resistance of winding 0(short circuit)or∞（open circuit）. 6. FUSE Checking continuity of fuse on PCB ASS’Y. 1) Remove the PCB ASS’Y from the electrical component box. Then pull out the fuse from the PCB ASS’Y (Fig.1) Fuse PCB Ass'Y...
  • Page 64 12.CHECKING COMPONENTS Multimeter Compressor motor capacitor Fan motor Fig.3 capacitor...
  • Page 66 We reserve the right to change the manual without prior notice.

This manual is also suitable for:

Amw2-18u4rxaAmw3-24u4raaAmw4-27u4raaAmw4-36u4raa2amw-42u4rra2amw-50urxa ... Show all

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