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Hisense AS-18UR4STVUH1 Service Manual
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Hisense AS-18UR4STVUH1 Service Manual

Hisense AS-18UR4STVUH1 Service Manual

Split type air conditioner
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AS-18UR4STVUH1

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Summary of Contents for Hisense AS-18UR4STVUH1

  • Page 1 AS-18UR4STVUH1...
  • Page 2 Type of contents 1. OPERATION RANGE 2. SPECIFICATION 3. INSTALLATION 4. ELECTRICAL DATA 5. CONTROL MODE 6. TROUBLE SHOOTING 7. CHECKING COMPONENTS 8. PARTLIST...
  • Page 3 Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp ℃ ℃ ℃ ℃ COOLING Maximum D.B./23 W.B. D.B./26 W.B. ℃ ℃ ℃ ℃ Minimum D.B./15 W.B. D.B./15 W.B. ℃ ℃ ℃ ℃ HEATING Maximum D.B./18 W.B. D.B./18 W.B. ℃ ≤15 ℃...

  • Page 4: Unit Specifications

    2-1. Unit specifications Model No. AS-18UR4STVUH1 H/P,INVERTER Type Ratings 18000(6200-20000) Cooling Capacity Btu/h 19000(6000-23000) Heating Capacity Btu/h 1550(480-2400) Rated Input-Cooling 1540(480-2500) Rated Input-Heating Moisture Removal L/H.r Air Circulation m3/h Max 11.61,3.40 EER for Cooling Btu/h.W, W/W 3.61 COP for Heating...

  • Page 5: Major Component Specifications

    70/150/175 Loading Capacity (20'/40'/40'HC ) CE, WEEE,RoHS Approvals NOTE :Test conditions： Cooling : Indoor: DB27℃/ WB19℃ Outdoor: DB35℃/ WB24℃ Heating: Indoor: DB20℃/ WB15℃ Outdoor: DB7℃/ WB 6℃ 2-2. Major component specifications 2-2-1.INDOOR FAN MOTOR ELECTRIC PARAMETER PERFORMANCE DG13G2-02 Motor model Rated power source 208V～240V；...
  • Page 6 2-2-2. OUTDOOR FAN MOTOR ELECTRIC PERFORMANCE PARAMETER DG13Z1-35 Motor model Rated power source 208~240V 50~60HZ Poles Rated load output(W) ℃ ℃ Ambient temperature( ) -5℃～+43 . WIRING DIAGRAM 2-2-3. COMPRESSOR ELECTRIC PERFORMANCE PARAMETER DA130S1C-20FZ Compressor model Compressor type Rotary DC inverter Motor Motor type DC Brushless Motor(Revolution Variable)

  • Page 7: Wiring Diagram

    2-3. Other component specifications 2-3-1. STEPPER MOTOR ELECTRIC PARAMETER PERFORMANCE DG13B1-01 Stepper Motor model Voltage(DC) Number of phase Drive mode 1-2 phase excitation unipolar drive Resistance per phase 200Ω±7% Relative humidity(RH) 45%～85% Temperature range(℃) -10℃～+40℃. WIRING DIAGRAM 5 red ) 1 blue 3 yellow...
  • Page 8 1. Indoor Unit: For indoor unit installation, the distance between its top and the ceiling shall not be less than 10 cm -20 cm, and the distance from the ground should be between 2m to 2.6m. Also the wallboard must be smooth and straight, with its supporting force of not less than 60 kg.
  • Page 9 4-1.Electrical wiring diagrams 4-1-1.INDOOR...
  • Page 10 4-1-2. OUTDOOR YE / GN BU BN FAN MOTER YE / GN YE / GN FUSE YE / GN INPUT FILTER OUTPUT RD BK WH YE CN601 CN202 CN203 CN703 CN702 CN704 CN801 CN102 CN701 CN4 CN3 U R) CN13( CAP+) V （S）...
  • Page 11 4-2-1.THE PARAMETER OF OUTDOOR COMPRESSOR TEMPERATURE SENSOR: （R =187.25K±6.3%；R =3.77K±2.5K；B=3979±1%） T(℃ ) R(KΩ ) V(v) T(℃ ) R(KΩ ) V(v) T(℃ ) R(KΩ ) V(v) 966.1 0.1014 55.46 1.3252 6.662 3.7507 910.3 0.1075 53.11 1.3678 6.446 3.7813 0.1139 50.86 1.4112 6.239 3.8111 0.1206...
  • Page 12 4-2-2. THE PARAMETER OF THE OUTDOOR COIL AND OUTDOOR SENSOR： （R =15K±2%； B=3450±2%） T(℃) R(KΩ) V(v) T(℃) R(KΩ) V(v) T(℃) R(KΩ) V(v) 67.94 0.3235 6.962 2.0151 1.297 3.9186 64.25 0.3408 6.688 2.0636 1.258 3.9443 60.79 0.3588 6.427 2.1120 1.22 3.9696 57.53 0.3776 6.178...
  • Page 13 4-2=3.THE PARAMETER OF THE INDOOR COIL AND INDOOR ROOM SENSOR： TEMPERATURE A/D CONVERSION TABLE int-ad int-ad 152.5 0.1494911 7.6240458 11.99 1.4080288 71.809467 143.9 0.1581427 8.0652759 11.47 1.4533086 74.118738 135.8 0.1672598 8.5302491 10.98 1.4987245 76.434949 128.3 0.1766917 9.0112782 10.51 1.5450362 78.796844 121.1 0.1868045 9.527027...
  • Page 14 17.21 1.0725696 54.70105 2.268 3.3725603 172.00057 16.44 1.1116367 56.693472 2.189 3.4112353 173.973 15.7 1.1519608 58.75 2.114 3.4487819 175.88788 1.1928934 60.837563 2.041 3.4861297 177.79261 14.33 1.2348923 62.979506 1.971 3.5227102 179.65822 13.7 1.2771739 65.13587 1.905 3.5579107 181.45344 13.1 1.3202247 67.331461 1.84 3.5932722 183.25688 12.53 1.3639002...
  • Page 15 Control mode 1.Major general technical parameters 1 Conditionings for operation: Ambient temperatures: (-7 - +45 ℃), relative humidity (30 - 95%). 2 Remote receiver distance: 8 m. 3 Remote receiver angle: In the distance 5M, over 60 degrees. 4 Temperature control accuracy: ±1℃. 5 Time error: Less than 3%.
  • Page 16 When T ＞26℃， it starts in the cooling mode, temperature being set at 26℃ room t When 23℃＜T ≤26℃， it starts in the dehumidify run mode; room When 21℃＜T ≤26℃, it starts in the ventilation mode. room WhenTroom≤21℃, it starts in the heating mode, temperature being set at 22℃ In this Automatic run mode , based on the automatic setting temperature ,the set temperature can only be changed 2 ℃(up &...
  • Page 17 blowing 15 minutes then back to original cooling angle. Default fan speed is high but speed and flaps angle can be controlled. 4.2.7 Anti-freeze protection 4.2.7.1 Condition for anti-freeze interruption: When the indoor heat exchanger temperature is below the Anti-freeze Interruption Temperature（2℃） and maintains for 10 s, the system is interrupted for the anti-freeze.
  • Page 18 Indoor Fan Speed room ≤2 room C <T <4 Medium room ≥4 High room 4.3.3 Cold air prevention In the heating-run, to prevent the indoor fan from blowing cold air, the indoor fan speed is controlled as illustrated below: 35℃ Set fan speed Down Set fan speed...
  • Page 19 interruption is lifted. 4.3.8 Overcurrent protection in heating Same as cooling. 4.3.9 The compressor discharge temperature too high protection Same with the cooling-run mode. 4.3.10 Defrost 4.3.10.1 Conditions for the judgment for frosting Condition 1: The compressor has been kept operating for a certain time (50 minutes) Condition 2: When T ≥3℃, T...

  • Page 20: Control Mode

    Time Dehumidifying area I: Operation at the frequency in the range (25 – 80 Hz) according to ∆t (T indoor ambient ∆t(℃) f(Hz) ≥2 Efficient Dehumidifying area II: The compressor stops for 5 minutes and operates for 5 minutes at the lowest frequency. Dehumidifying area III: The compressor stops.
  • Page 21 Ο Ο Ο Normal frequency ascent and descent with no restriction on the frequency × × ★ Frequency descent or restriction on frequency ascent caused by overcurrent × ★ ★ Frequency descent or restriction on frequency ascent caused by anti-freeze in cooling or overload control in heating ×...

  • Page 22: Troubleshooting

    6-1. Trouble alarm Trouble List Indication on the outdoor unit When the compressor is interrupted, the outdoor LEDs are used to indicate the troubles listed below: Ο: flashing ×: OFF Symbols for indicator lights: ★: ON LED2 LED3 LED4 Troubles ×...
  • Page 23 IPM module protection Over and under-voltage control Room temperature sensor in trouble Communication trouble Indoor coil temperature sensor in trouble Current overload control Communication between the indoor and outdoor in trouble Maximum current control Indoor fan motor operation abnormal 4-way valve changeover Grid protection alarm (cabinet abnormal type)
  • Page 24 6-2. Service flow chart Switch on the power supply Does it receive the Start up self-test remote controller Does LED screen display function signal? normally? Check the result remote fuse controller in good (3.15A/250V) blown? Replace the battery press condition ACL button.
  • Page 25 Error code 33 Take from Indoor temperature CN09 ,Measure sensor resistance of thermistor Does the resistance of thermistor have Replace the characteristics indoor pcb board Error code 34 Take from Indoor Coil sensor CN09 ,Meaure trouble resistance of thermistor Replace Does the unit exit hot thermistor protector...
  • Page 26 Error code 39 Indoor fan motor trouble Set the air conditioner operate in fan mode Check the connector of Does fan motor stop with the Is indoor fan motor running? indoor motor remote controller Does the socket CN1(1-3) of Indoor control board faulty indoor control board and replace it have power input...
  • Page 27 Error code 36 Communication trouble Connect the indoor and Are all the lead wires connected outdoor unit again according between indoor and outdoor unit? to the wiring diagram Display board fault, replace it Is there power output between indoor T/B 1 and 2 AC220V? Indoor control Indoor control board Is the system in...
  • Page 28 7-1.Check parts unit 1. INDOOR FAN MOTOR .MOTOR EXAMINE AND REPAIR Circuit diagram Test in resistance. TOOL: Multimeter. Test the resistance of the main winding. The indoor fan motor is fault if the resistance of main winding 0(short circuit)or∞（open circuit）. Notes: 1) Please don’t hold motor by lead wires.
  • Page 29 1) Please don’t hold motor by lead wires. 2) Please don’t plug IN/OUT the motor connector while power ON. 3) Please don’t drop .Hurl or dump motor against hard material.Malfunction may not be observed at early stage after such shock.But it may be found later,This type of mishandling void our warranty.

  • Page 30: Stepper Motor

    5. FILTER INPUT OUTPUT Test in resistance. TOOL: Multimeter. Test the resistance of “LOAD”port. The filter is fault if the resistance of winding 0(short circuit)or∞（open circuit） 6. STEPPER MOTOR Resistance per phase：200Ω±7% 5 red ) 1 blue 3 yellow Test in resistance. TOOL: Multimeter.
  • Page 31 8-1. Indoor unit 1. Exploded View 2. Part list INDOOR UNIT PARTS LIST OF AS-18UR4STVUH1 DESCRIPTION Part No. Q’ ty UNIT PRICE($) Decorative strip 1263826 $4.06 panel 1247268 $3.78 Filter 1248291 $1.31 1248291 Cabinet $1.31 1311414 Evaporator assembly $35.84 Bearing 1223738 $0.44...
  • Page 32 1221321 Terminal3PS $0.77 1248516 Wire clamp fixture $0.42 Drain hose 1276892 $0.88 Louver motor 1225096 $2.04 Drain pan 1248436 $5.35 1248841 Louver link $0.07 Vertical louver 1248649 $0.03 Horizontal louver B 1248648 $2.00 Vertical louver 1248650 $0.03 Wind tunnel bearing 1222824 $0.12 Remote controller...
  • Page 33 8-2.Outdoor unit 8-2-1. Exploded View 36 35 8-2-2. Part list OUTDOOR UNIT PARTS LIST OF AS-18UR4STVUH1 Part No. Q’ty DESCRIPTION UNIT PRICE($) $4.79 1276849 Fan Guard $14.40 Cabinet 1247465 $0.04 Fasten Nut 1226724 $4.53 Outdoor Fan 1313822 $26.57 Outdoor Fan Motor 1331300 $4.69...
  • Page 34 $0.06 1223848 Socket $0.16 1205708 Fuse $1.00 1201219 Thermistor $0.85 1201221 Thermistor $0.17 1248926 Handle $1.14 Terminal Cover 1227209 $4.47 3 Way Valve Assembly 1258472 $3.07 2 Way Valve Assembly 1258473 $1.71 Valve Fixing Plate 1248048 $4.00 Right Side Plate 1246297 $29.00 4 Way Valve Assembly...