Hisense AUD-24UX4SZLH Technical & Service Manual
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Hisense AUD-24UX4SZLH Technical & Service Manual

Dc inverter air conditioner
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TECHNICAL&SERVICE MANUAL
MODEL:
AUD-18UX4SGKL
AUD-24UX4SZLH
AUD-36UX4SAMH
AUD-48UX6SPHH
AUD-60UX6SPHH
AUV-18UR4SZA1
AUV-24UR4SAA1
AUV-36UR4SAB1
AUV-48UR6SPC
AUV-60UR6SPC
AUD-18UX4SZKL1
AUD-24UX4SALH1
AUD-36UX4SAMH1
—DC INVERTER AIR CONDITIONERS
AUC-18UX4SGAA
AUC-24UX4SZEA
AUC-36UX4SAEA
AUC-48UX6SPFA
AUC-60UX6SPFA
AUC-18UR4SZAA1
AUC-24UR4SAEA1
AUC-36UR4SAEA1
V3.3

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Summary of Contents for Hisense AUD-24UX4SZLH

  • Page 1 TECHNICAL&SERVICE MANUAL V3.3 —DC INVERTER AIR CONDITIONERS MODEL: AUC-18UX4SGAA AUD-18UX4SGKL AUC-24UX4SZEA AUD-24UX4SZLH AUC-36UX4SAEA AUD-36UX4SAMH AUC-48UX6SPFA AUD-48UX6SPHH AUC-60UX6SPFA AUD-60UX6SPHH AUV-18UR4SZA1 AUV-24UR4SAA1 AUV-36UR4SAB1 AUV-48UR6SPC AUV-60UR6SPC AUD-18UX4SZKL1 AUC-18UR4SZAA1 AUD-24UX4SALH1 AUC-24UR4SAEA1 AUD-36UX4SAMH1 AUC-36UR4SAEA1...

  • Page 2: Table Of Contents

    DC Inverter Air Conditioner Technical & Service Manual Table of Contents Page 1．GENERAL 2．SPECIFICATION 3．OUTLINES AND DIMENSIONS 3-1 INDOOR 3-2 OUTDOOR 4． DIAGRAM&DATA 4-1 Refrigerant Flow Diagram 4-2MAX. Refrigerant Pipe Length and Height Difference 4-3 Electric Diagrams 4-4Air flow and ESP Chart Diagrams(for duct type) 4-5 PERFORMANCE CURVE 5．ELECTRICAL DATA 5-1 Electric Wiring Diagrams...
  • Page 3 8-1 Check Refrigerant System 8-2 Check Parts Unit...

  • Page 4: 1．General

    Features Duct t Type Ai r Conditio oner eatures Save Inst tallation Spac indoor unit c can be install led inside the e ceiling con nveniently. Optional S Static Pressu 8k: optional 1 10Pa /30Pa, 24K/36K 50 Pa/80Pa(Fo r AUD-24UX4 4SALH1&AUD D-36UX4SAMH H1，freely...
  • Page 5 Self Recovery of Power Break When the power supply is recovered after break, all preset are still effective and the air-conditioner can run according to the original setting. Fault Self-diagnose Function When there is something wrong with the air-conditioner，the micro computer could diagnose the faults, which can be read from the display and is convenient for maintenance.
  • Page 6 Cassette T Type Air C Condition eatures Save Inst tallation Spac The indoo or unit can b be installed in nside the ceil ling convenie ently. High Effic ciency and E nvironment F Friendly New w Refrigerant- -R410A R410A ca an protect th e environme ent and do no...
  • Page 7 Ceiling &Floor Air Conditioner Features Save Installation Space The indoor unit’s thickness is only 230mm,can be installed inside the ceiling conveniently. Flexible Installation Options According to the actual installation space,The indoor unit can be installed in the ceiling or on the floor. One unit, Two installation method. High Efficiency and Environment Friendly New Refrigerant-R410A R410A can protect the environment and do not harm to the ozone layer.
  • Page 8 Fault Self-diagnose Function When there is something wrong with the air-conditioner, the micro computer could diagnose the faults, which can be read from the display and is convenient for maintenance.   DC IINVER AIR CONDITIONER TECHNICAL&SERVICE MANUAL V3.3...
  • Page 9 Product Lineup Type Model Duct Type AUD- ● ● ● ● ● Cassette Type AUC- ● ● ● ● ● Ceiling&Floor AUV- ● ● ● ● ● type   DC IINVER AIR CONDITIONER TECHNICAL&SERVICE MANUAL V3.3...
  • Page 10 1.3 MODEL IDENTIFICATION A U C -18 U R 4 S Z A A 1 serial number K:Outdoor Unit Indetification G:Indoor Unit Indetification S:Refrigerant R410A F:Refrigerant R22 4:220V-240V/50HZ/1P 6:380V-415V/50HZ/3P X: Wire Romote Controller R:Wireless Romote Controller U:DC-Invert Heat Pump Type H:Heat Pump Type C:Cooling Only Cool Capacity:18x10 Btu/h Type:D-Duct Type,C-Cassette Type,V-Ceiling&Floor Type,W-Outdoor Unit Unit...
  • Page 11 .4 Produ uct Pict ture uct Typ Model AUD-18UX4 4SGKL AUD-24UX4S SZLH ndoor utdoor AUD-48UX6S SPHH Model AUD-36UX4 4SAMH AUD-48UX6S SPHH ndoor   utdoor     DC IINV VER AIR COND ITIONER TECHN NICAL&SERVICE E MANUAL V3.3...
  • Page 12 AUD-18UX4 4SZKL1 AUD-24UX4S SALH1 Model   ndoor utdoor Model AUD-36UX4 4SAMH1   ndoor   utdoor     DC IINV VER AIR COND ITIONER TECHN NICAL&SERVICE E MANUAL V3.3...
  • Page 13 assette T Model AUC-18UX4 4SGAA AUC-24UX4S SZEA ndoor utdoor AUC-48UX6S SPFA Model AUC-36UX4 4SAEA AUC-60UX6S SPFA ndoor   utdoor     DC IINV VER AIR COND ITIONER TECHN NICAL&SERVICE E MANUAL V3.3...
  • Page 14 AUC-24UR4S SAEA1 AUC-18UR4 4SZAA1 Model AUC-36UR4S SAEA1     ndoor utdoor       DC IINV VER AIR COND ITIONER TECHN NICAL&SERVICE E MANUAL V3.3...
  • Page 15 Ceiling &Floor Type Model AUV-18UR4SZA1 AUV-24UR4SAA1 Indoor Outdoo AUV-48UR6SPC Model AUV-36UR4SAB1 AUV-60UR6SPC Indoor Outdoo           DC IINVER AIR CONDITIONER TECHNICAL&SERVICE MANUAL V3.3...
  • Page 16 DISPLAY PANEL: Cassette Type 18k      24K，36K，48K，60K                                DC IINVER AIR CONDITIONER TECHNICAL&SERVICE MANUAL V3.3...
  • Page 17 Ceiling&Floor type                                       DC IINVER AIR CONDITIONER TECHNICAL&SERVICE MANUAL V3.3...
  • Page 18 2. Specifications  Duct Type  Model AUD-18UX4SZKL1 AUD-24UX4SALH1 AUD-36UX4SAMH1 AUD-18UX4SGKL AUD-24UX4SZLH AUD-36UX4SAMH AUD-48UX6SPHH AUD-60UX6SPHH Indoor model AUD-18UX4SKL1 AUD-24UX4SLH1 AUD-36UX4SMH1 AUD-18UX4SKL AUD-24UX4SLH AUD-36UX4SMH AUD-48UX4SHH AUD-60UX4SHH Outdoor model AUW-18U4SZ1 AUW-24U4SA1 AUW-36U4SA1 AUW-18U4SG AUW-24U4SZ AUW-36W4SA AUW-48U6SP AUW-60U6SP Ph-V-H Power supply 220V-240V ~/50Hz 380V-415V，3N~/50Hz 12.6 Cooling Btu/h...
  • Page 19 Model AUD-18UX4SZKL1 AUD-24UX4SALH1 AUD-36UX4SAMH1 AUD-18UX4SGKL AUD-24UX4SZLH AUD-36UX4SAMH AUD-48UX6SPHH AUD-60UX6SPHH Indoor model AUD-18UX4SKL1 AUD-24UX4SLH1 AUD-36UX4SMH1 AUD-18UX4SKL AUD-24UX4SLH AUD-36UX4SMH AUD-48UX4SHH AUD-60UX4SHH Outdoor model AUW-18U4SZ1 AUW-24U4SA1 AUW-36U4SA1 AUW-18U4SG AUW-24U4SZ AUW-36W4SA AUW-48U6SP AUW-60U6SP 2433;U-W :2433; 2433;U-W :2433; V-W: 2.304（at V-W: 2.304（at 25℃） 25℃） MITSUBISHI...
  • Page 20 Model AUD-18UX4SZKL1 AUD-24UX4SALH1 AUD-36UX4SAMH1 AUD-18UX4SGKL AUD-24UX4SZLH AUD-36UX4SAMH AUD-48UX6SPHH AUD-60UX6SPHH Indoor model AUD-18UX4SKL1 AUD-24UX4SLH1 AUD-36UX4SMH1 AUD-18UX4SKL AUD-24UX4SLH AUD-36UX4SMH AUD-48UX4SHH AUD-60UX4SHH Outdoor model AUW-18U4SZ1 AUW-24U4SA1 AUW-36U4SA1 AUW-18U4SG AUW-24U4SZ AUW-36W4SA AUW-48U6SP AUW-60U6SP Outdoor Net/Gross 45/51 69/73 70/74 35.5/39 50/56 70/74 101/107 108/112 --/54(SOUND...
  • Page 21 Cassette type  AUC-36UX4SAEA AUC-48UX6SPFA AUC-60UX6SPFA Model AUC-18UR4SZAA1 AUC-24UR4SAEA1 AUC-36UR4SAEA1 AUC-18UX4SGAA AUC-24UX4SZEA AUC-36UX4SEA AUC-48UX4SFA AUC-60UX4SFA Indoor model AUC-18UR4SAA1 AUC-24UR4SEA1 AUC-36UR4SEA1 AUC-18UX4SAA AUC-24UX4SEA AUW-36W4SA AUW-48U6SP AUW-60U6SP Outdoor model AUW-18U4SZ1 AUW-24U4SA1 AUW-36U4SA1 AUW-18U4SG AUW-24U4SZ Power supply Ph-V-Hz 20V-240V ~/50Hz 380V-415V，3N~/50Hz 5（1.2-6.5） 7.0（2.2-8.0） 9.5（3.6～10.5） 32,400 Cooling 17,100(4,100-22 23,900...
  • Page 22 AUC-36UX4SAEA AUC-48UX6SPFA AUC-60UX6SPFA Model AUC-18UR4SZAA1 AUC-24UR4SAEA1 AUC-36UR4SAEA1 AUC-18UX4SGAA AUC-24UX4SZEA AUC-36UX4SEA AUC-48UX4SFA AUC-60UX4SFA Indoor model AUC-18UR4SAA1 AUC-24UR4SEA1 AUC-36UR4SEA1 AUC-18UX4SAA AUC-24UX4SEA AUW-36W4SA AUW-48U6SP AUW-60U6SP Outdoor model AUW-18U4SZ1 AUW-24U4SA1 AUW-36U4SA1 AUW-18U4SG AUW-24U4SZ DA131S1B-28F DA230S2C-31M DA250S2C-30M DA130S1C-20F ATL165SD-C9A Model DA250S2C-30MT TNB306FPNMC LNB42FSAMC Type Rotary U-V: U-V: Compressor...
  • Page 23 AUC-36UX4SAEA AUC-48UX6SPFA AUC-60UX6SPFA Model AUC-18UR4SZAA1 AUC-24UR4SAEA1 AUC-36UR4SAEA1 AUC-18UX4SGAA AUC-24UX4SZEA AUC-36UX4SEA AUC-48UX4SFA AUC-60UX4SFA Indoor model AUC-18UR4SAA1 AUC-24UR4SEA1 AUC-36UR4SEA1 AUC-18UX4SAA AUC-24UX4SEA AUW-36W4SA AUW-48U6SP AUW-60U6SP Outdoor model AUW-18U4SZ1 AUW-24U4SA1 AUW-36U4SA1 AUW-18U4SG AUW-24U4SZ Panel L×W×H 650×650×30 950×950×37 950×950×37 650×650×30 950×950×37 950×950×37 950×950×37 950×950×37 Indoor L×W×H 770×750×310 930×930×290...
  • Page 24 Ceiling & Floor type  Model AUV-18UR4SZA1 AUV-24UR4SAA1 AUV-36UR4SAB1 AUV-48UR6SPC AUV-60UR6SPC Power supply Ph-V-Hz 1N,220V-240V/50Hz 3N~,380V-415V/50Hz 12.6 17.0 Cooling Btu/h 17,000 23,900 31,400 43,000 58,000 Capacity 11.0 15.3 20.5 Heating Btu/h 19,800 29,000 37,500 52,200 70,000 Dehumidification Cooling 1.55 3.05 3.92 5.295 Rated input Heating 1.75 2.77...
  • Page 25 Model AUV-18UR4SZA1 AUV-24UR4SAA1 AUV-36UR4SAB1 AUV-48UR6SPC AUV-60UR6SPC Winding M:79.7;A:59.4,20.2,10 resistance M:187A:245,60,33,143 M:209.4;A:245,60,33,143 M:75;A:97.5 M:79.7;A:59.4,20.2,108 (at20℃) YDK65-6-9024 YDK65-6-9024 Model ARW4401QH SIC-71FW-D8121-1 SIC-71FW-D8121-1 YDK65-6-9061 YDK65-6-9061 Outdoor Winding M:83;A1:23.4A2:14A1:6 M:83;A1:23.4A2:14A1: resistance M:231.5;A:168 M:78;A:36.2,51.5,109.2 M:59.1;A:85.8 63.5 (at20℃) type centrifugal fan Indoor Speed r.p.m 630/720/850 910/1030/1150 1080/1160/1220 1000/1100/1200 1000/1100/1200...
  • Page 26 Model AUV-18UR4SZA1 AUV-24UR4SAA1 AUV-36UR4SAB1 AUV-48UR6SPC AUV-60UR6SPC POWER) Gas/Liquid 12.7/6.35 15.88/9.52 15.88/9.52 19.05/9.52 19.05/9.52 Max. refrigerant pipe Refrigerant length piping Max. difference in level 20（outdoor blow：15） 20（outdoor blow：15） Connection method Flare Connection Power wiring 3 core x1.5 3 core x2.5 3 core x2.5 5 core x2.5 5 core x2.5 wiring...

  • Page 27: 3．Outlines And Dimensions

    3.OUTLINES AND DIMENSIONS 3-1 INDOOR Duct type DC INVERTER UNITARY AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 28 DC INVERTER UNITARY AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 29 Cassette Type DC INVERTER UNITARY AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 30 DC INVERTER UNITARY AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 31 24K,36K,48K,60K DC INVERTER UNITARY AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 32 DC INVERTER UNITARY AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 33 Ceiling&Floor Type DC INVERTER UNITARY AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 34 3-2.OUTDOOR 18K(AUW-18U4SG) DC INVERTER UNITARY AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 35 18K（MODEL: AUW-18U4SZ1） 24K(MODEL: AUW-24U4SZ) DC INVERTER UNITARY AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 36 24&36K （MODEL: AUW-24U4SA1, AUW-36U4SA1, AUW-36W4SA） DC INVERTER UNITARY AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 37 48K&60K （MODEL: AUW-48U6SP、AUW-60U6SP） DC INVERTER UNITARY AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 38 & &   4. Diagrams DATA & 4.1 Piping Diagrams 18k type                           DCINVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...

  • Page 39: Outdoor

    & &   24k &36K type Stop Valve Ambient temperature Ambient Discharge sensor temperature temperature sensor sensor 4-Way Valve Discharge Coil Pressure temperature Outdoor Switch sensor Coil heat temperature exchanger sensor Suction temperature sensor Indoor heat exchanger Defrost temperature sensor Accumulator Compressor strainer...
  • Page 40 & &   48K&60K Stop Valve Ambient temperature Ambient Discharge sensor temperature temperature Suction sensor sensor Pressure 4-Way Valve Switch Discharge Coil Pressure temperature Outdoor Switch sensor Coil heat temperature exchanger sensor Suction temperature sensor Indoor heat exchanger Defrost temperature sensor Accumulator Compressor...

  • Page 41: 4-2Max. Refrigerant Pipe Length And Height Difference

    & &   4-2MAX. Refrigerant pipe length and height difference *Do your best to reduce the pipe length. Long pipe may cause capacity of the indoor unit incline.    Total refrigerant pipe length  Outdoor unit precharged  0m~5m  5m～60m  AUW‐18U4SG  1270g  0g  Xg = 15g / m  ×  (Total pipe length(m) ‐5)  AUW‐24U4SZ  1500g  0g  AUW-36U4SA 2100g  0g    AUW-18U4SZ1   1400g  0g  AUW-24U4SA1   1680g  0g  AUW-36U4SA1   2100g  0g ...

  • Page 42: Electric Diagrams

    & &   4-3ELECTRIC Diagrams   Recommend Wire Size Power Source Transmitting Cable Model POWER SUPPLY Cable Size Size （mm2） （mm2） 220-240V,50Hz 3×1.5 4×0.75 24K/36K 220-240V,50Hz 3×2.5 4×0.75 380~415V,3N~,50Hz 48K/60K 5×2.5 4×0.75 ● Use an ELB (Electric Leakage Breaker). If not used, it will cause an electric shock or a fire.
  • Page 43 & &   (B) Check to ensure that the stop valves of the outdoor unit are fully opened and then start the system. ● Pay attention to the following items while the system is running. (A) Do not touch any of the parts by hand at the discharge gas side, since the compressor chamber and the pipes at the discharge side are heated higher than 90 .

  • Page 44: 4-4Air Flow And Esp Chart Diagrams(For Duct Type)

    & &   4-4Air flow and ESP Chart Diagrams(for duct type) 18K  18K Curve for 10Pa ESP 1000 Air flow（m3/h）   18K Curve for 30Pa ESP 1000 1100 Air flow（m3/h）     DCINVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 45 & &   24K  24K Curve for 50Pa ESP 700  800  900  1000  1100  1200  1300  1400  Air flow（m3/h）   24K Curve for 80Pa ESP 600  700  800  900  1000  1100  1200  1300  1400  1500  Air flow（m3/h）       DCINVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 46 & &    (AC MOTOR) 36K Curve for 50Pa ESP 900  1100  1300  1500  1700  1900  Air flow（m3/h）   36K Curve for 80Pa ESP 800  1000  1200  1400  1600  1800  2000  Air flow（m3/h）     DCINVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 47 & &   48K  48K Curve for 80Pa ESP 1500 1700 1900 2100 2300 2500 Air flow（m³/h）   48K Curve for120Pa ESP 1500 1700 1900 2100 2300 2500 Air flow（m³/h）     DCINVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 48 & &   60K  60K Curve for 80Pa ESP 1500 1700 1900 2100 2300 2500 Air flow（m³/h）     60K Curve for120Pa ESP 1500 1700 1900 2100 2300 2500 Air flow（m³/h）     DCINVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...

  • Page 49: Performance Curve

    & &   4.5 PERFORMANCE CURVE   18K Cooling Capacity    24K Cooling Capacity    36K Cooling Capacity        DCINVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 50 & &   48K  Cooling Capacity kW 16.00  21℃ 15.00  28℃ 35℃ 14.00  43℃ 13.00  12.00  11.00  10.00      60k  Cooling Capacity  20.00  21℃ 28℃ 19.00  35℃ 18.00  43℃ 17.00  16.00  15.00  14.00      DCINVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...

  • Page 51: 5．Electrical Data

    5-1.Electrical wiring diagrams INDOOR UNIT Duct type AUD-18UX4SKL,AUD-18UX4SKL1 DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 52 AUD-24UX4SLH,AUD-36UX4SMH DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 53 AUD-24U4SLH1,AUD-36U4SMH1 DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 54 AUD-48UX4SHH,AUD-60UX4SHH DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 55 Cassette type 24K ,36K,48K,60K DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 56 Ceiling&Floor type 18K,48K,60K 24K,36K DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 57 OUTDOOR UNIT AUW-18U4SG DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 58 AUW-18U4SZ1 DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 59 AUW-24U4SZ DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 60 AUW-24U4SA1 DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 61 AUW-36U4SA DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 62 AUW-36U4SA1 DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 63 AUW-48U6SP AUW-60U6SP DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...

  • Page 64: Electric Control

    5-2. Electric control Board 1. Indoor control board Duct type 18K,48K,60K &AUD-24UX4SLH, AUD-36UX4SMH AUD-24UX4SLH1, AUD-36UX4SMH1 DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 65 CASETTE Type 24K,36K,48K,60K DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 66 Ceiling & Floor type 18k,48k,60k 24k,36k DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 67 2.Control board for outdoor unit 1) OUTDOOR CONTROL BOARD AUW-18U4SG 1) CONTROL BOARD（AUW-18U4SG） CONTROL BOARD（AUW-24U4SZ） AC fan motor Heater N N OUT Earth AC N IN 4-way valve AC L IN Heater L Communication SI IPM-SI Communication N IPM power High pressure switch Liquid and Gas Sensor Electric expansion valve...
  • Page 68 CONTROL BOARD（AUW-36U4SA） 4-way valve Heater N 4-way valve N OUT Heater L AC N IN AC fan motor Earth AC L IN Electric expansion valve Communication SI IPM power IPM-SI Communication N AC L OUT Suction Sensor High pressure switch Outdoor Sensor Discharge Sensor Low pressure switch...
  • Page 69 CONTROL BOARD（AUW-48U6SP、AUW-60U6SP） Heater N Transformer Down fan motor Up fan motor POWER IN 4-valve AC contactor Heater L Transformer Communication N Communication SI Coil/defrost Sensor High pressure switch IPM-SI Outdoor Sensor Electric expansion valve Low pressure switch Suction sensor Discharge sensor DC INVERTER AIR CONDITIONER TECHNICAL&...
  • Page 70 （AUW-18U4SZ1，AUW-24U4SA1、AUW-36U4SA1） By Pass valve Heater N 4-way valve N OUT Heater L AC N IN AC Fan Earth AC L IN Electric expansion valve Communication SI IPM power IPM-SI Communication N AC L OUT Suction Sensor High pressure switch Outdoor Sensor Discharge Sensor Low pressure switch coil/defrost Sensor...
  • Page 71 IPM Board IPM Board（AUW-18U4SG） To Electrolytic Capacitor + To PFC Inductor-2 AC L IN To PFC Inductor-1 To Electrolytic Capacitor - AC N IN IPM Power To Compressor W To Compressor V To Compressor U To Main Control To Electrolytic Board Capacitor + (AUW-24U4SZ / AUW-36U4SA)
  • Page 72 (AUW-48U6SP、AUW-60U6SP) AC IN-W Compressor AC IN-V Contacto Compressor AC IN-U Inductor Compressor AC IN Inductor L1 Contact IPM-SI DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...

  • Page 73: Dip Switch Setting Of Outdoor

    5-3. DIP SWITCH SETTING OF OUTDOOR AUW-18U4SZ1,AUW-24U4SA1,AUW-36U4SA1,AUW-36W4SA 48K&60K DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...

  • Page 74: Digital Display Switch Of Outdoor

    5-4. Digital Display Switch of Outdoor Digital Display Switch Introduction It can be used to check outdoor running parameters. There are 3 buttons on the digital display board： 1）SWITCH button：Indoor parameters and outdoor parameters can be selected in turn by pressing it. P--outdoor unit, H--indoor unit；...
  • Page 75 The parameters will be displayed after 3s when the checking numbers are selected. Parameters can be checked as following table below. Parameter Descriptions code Protect Code or Error Code Target Frequency Driver Frequency Outdoor Electronic expansion valve Opening Outdoor Electronic expansion valve Target Opening Upper DC Motor Revolving Speed AC Input Voltage Current...

  • Page 76: Static Pressure Setting(Only For Duct Type)

    5-5. Static Pressure Setting (only for duct type) CHANGE OF STATIC PRESSURE The static pressure outside the indoor unit can be chosen . Models except DC FAN MOTERS(AUD-24UX4SALH1 & AUD-36UX4SAMH1) : You can change the static pressure by changing the fan motor terminal which refer to following Fig.below: FOR DC FAN MOTER DUCT AIR CONDITIONERS(AUD-24UX4SALH1 &...
  • Page 77 5-6 System Parameter Adjustment Internal control parameter adjustment can be performed. OPERATION： ①Hold down both“MODE”button and“ADD.FUNC.”button for 3 seconds, symbol and parameter number blinking at the same time. ②Press“ ”“ ”button to adjust parameter number until display “17”. And press “ENTER”button to entering system parameter adaption state, symbol stop blinking.
  • Page 78 PARAMETER PARAMETER VALUE&REPRESENTATION PARAMETER DESCRIPTION NOTE CODE DATA TYPE REPRESENTATION(FUNCTION CODE) Temperature Adjustment-Heating Character -10~10℃（Single Character with symbol） =0，Cooling/Heating Temperature Limit are all Invalid =1，Cooling Temperature Limit is valid，Heating Temperature Limit is invalid Cooling/Heating Temperature Limit Integer =2， Cooling Temperature Limit is invalid， Heating Temperature Limit is valid =3，Cooling/Heating Temperature Limit are all valid The Lowest Set Temperature in...

  • Page 79: Sensor Parameter

    5-7. Sensor parameter 1. THE PARAMETER OF OUTDOOR COMPRESSOR DISCHARGE TEMPERATURE SENSOR: （R =187.25K±6.3%；R =3.77K±2.5K；B0/100=3979K±1%） T [ ℃ ] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 7.47 908.2603 985.5274 1065.1210 -7.84 7.42 855.3955 927.6043 1001.9150 -7.78...
  • Page 80 T [ ℃ ] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 5.50 107.8202 114.4973 121.1586 -5.83 5.46 102.8560 109.1728 115.4734 -5.79 5.41 98.1470 104.1246 110.0855 -5.74 5.37 93.6787 99.3367 104.9778 -5.70 5.33 89.4378 94.7946 100.1342 -5.65...
  • Page 81 T [ ℃ ] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 3.87 17.6458 18.3926 19.1338 -4.06 3.84 16.9986 17.7113 18.4185 -4.02 3.83 16.3784 17.0537 17.7335 -3.96 3.77 15.7839 16.4332 17.0774 -3.95 3.74 15.2139 15.8338 16.4488 -3.92...
  • Page 82 T [ ℃ ] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 2.55 4.1453 4.2568 4.3683 -2.62 2.52 4.0218 4.1287 4.2355 -2.59 2.50 3.9024 4.0049 4.1074 -2.56 2.47 3.7872 3.8854 3.9837 -2.53 2.44 3.6758 3.7700 3.8643 -2.50...
  • Page 83 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)% 6.12 60.78 64.77 68.99 -6.16 5.83 57.75 61.36 65.16 -5.88 5.57...
  • Page 84 T [℃] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 2.33 9.199 9.422 9.647 -2.37 2.40 8.826 9.047 9.269 -2.44 2.48 8.470 8.689 8.910 -2.52 2.57 8.129 8.347 8.567 -2.61 2.66 7.804 8.021 8.240 -2.71 2.76 7.493...
  • Page 85 T [℃] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 5.82 1.888 2.005 2.129 -5.84 5.87 1.827 1.941 2.062 -5.87 5.91 1.767 1.880 1.998 -6.01 5.99 1.710 1.820 1.936 -6.04 6.02 1.655 1.763 1.876 -6.13 6.11 1.602...
  • Page 86 T [℃] Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% 8.23 0.5064 0.5519 0.6014 -8.24 8.27 0.4923 0.5369 0.5853 -8.31 8.32 0.4787 0.5224 0.5698 -8.37 8.36 0.4655 0.5083 0.5547 -8.42 8.42 0.4528 0.4946 0.5401 -8.45 8.46 0.4404...

  • Page 87: 6．Control Mode

    6-1 Indoor control mode 1.Major general technical parameters 1 Remote receiver distance: 8 m. 2 Remote receiver angle: Less than 80 degrees. 3 Temperature control accuracy: ±1℃. 4 Time error: Less than 1%. 2. Functions of the controller Control function 2.1 Emergency switch Press the emergency button can realize the starting or closing Machine, starting up according to the automatic mode of operation（invalid for duct type air-conditioner）...
  • Page 88 will start in the timer off condition. When the set time is up, the air conditioner will turn off after receiving a signal from the remote controller. If the air conditioner has not received a signal from the remote controller when the set time is up, it will turn off automatically. 3.
  • Page 89 The heating mode, remote shutdown, such as indoor heat exchanger temperature is higher, the wind blowing out opportunities continue to run the waste heat. Cool and dehumidification mode , after the compressor close, indoor machine will continue to set the speed of operation for a period of time. 2.9 automatically model This model does not automatically model function, emergency button cannot set the automatic mode of operation, can use the emergency switch shutdown, remote setting the...

  • Page 90: Outdoor Control Mode

    6-2 Outdoor mode control Control function 1.Cooling Anti-freeze Protection To prevent indoor air conditioner evaporator temperature is too low, the indoor coil sensor for real time detection of evaporator. If the indoor coil temperature is too low, the compressor will protect. 2.
  • Page 91 Four-way valve of the outdoor machine shuts down when cooling and defrosting but starts when heating. During the heating process, the four way valve to stop working for a period of time after compressor disconnect. 7. Start-up Protection: To prevent compressor from restart frequently in the condition that system pressure has not been completely balanced, it can’t be restarted within 3 minutes.

  • Page 92: Error Codes

    Trouble guide When the air conditioner failure occurs, the fault code will displays on control board , wire remote controller or display panel. HOW TO CHECK FAULT CODES INDOOR UNIT 1.WALL MOUNTED TYPE For Free-match series Run the air-conditioner by wireless remote controller , continue pressing “SLEEP ”button for 4 times, fault codes will flashing rapidly on the...
  • Page 93 MOEDL:YXE-C01U FIG.2 ERROR CODE DISPLAY ON WIRE REMOT CONTROLLER （2）CHECK ERROR CODES BY DISPLAY PANEL(CASSETTE type and CEILING &FLOOR type) Display by lamp indicator Lamp RUN(LED2 ,red) and Lamp DEFROST（LED5 ,green）flashing，Lamp RUN display fault code ten digit number, lamp DEFROST display fault code single digit number (as shown fig. below). For example，fault code 36：...
  • Page 94 DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 95 LED FALSH CONTROL：flash 300mS(T1)，off 300mS(T2)，after 2000mS(T3)fault code repeat displays. (as shown below) T1 T2 Fig.2 LED FALSH CONTROL 3.Duct type indoor units of VRF---FAULT CODE DISPLAY BY INDOOR BOARD LED2 and LED5 are failure indicate lamps， LED2(YELLOW) indicate fault code ten digit number, LED5(GREEN) indicate single digit number code DC INVERTER AIR CONDITIONER TECHNICAL&...
  • Page 96 2.OUTDOOR UNIT FAULT CODE DISPLAY （1） ON/OFF UNITARY TYPE（with outdoor control box） Fault code display by indicate lamps of outdoor control board flash. The times that the lamp flashes equal to fault code. LED2-fault code lamp LED FALSH CONTROL： flash 300mS(T1)， off 300mS(T2)， after 900mS(T3)fault code repeat displays. (as shown below) T1 T2 （2）INVERTER UNITARY AIR CONDITONER , MULTI-SPLIT TYPE AIR CONDITONER&VRF：...
  • Page 97 Outdoor Control Board Digital Tube FOR INVERTER UNITARY AIR CONDITONER&VRF * VRF： Indoor unit can indicate both indoor failure and outdoor failure ,but outdoor only indicate outdoor’s. FOR MULTI-SPLIT TYPE Error code display on digital tube board directly. DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 98 3.Fault code display ( Driver Board ) The lamp of driver board flash shows failure occur. Or, fault code can be check on digital tube board . DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 99 The following is the fault code table of outdoor. sheet 1 Outdoor Error Code Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code 1.Reconnect the outdoor ambient 1.The outdoor ambient temperature sensor temperature sensor; connect loose; Outdoor ambient temperature 2.Replace the outdoor ambient 2.The outdoor ambient temperature sensor is...
  • Page 100 Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code Applied to 1.Replace outdoor ambient ON/OFF 1.Outdoor ambient temperature sensor fault； temperature sensor； air-condition Motor blockage protection 2. Outdoor coil temperature sensor fault； 2.Replace outdoor coil temperature ers with 2 3.Outdoor control board fault.
  • Page 101 Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code 3.Replace the outdoor control board supply models Application 1. Normally protection 1.Three-phase power is abnormal; 2. Check the wiring connection refer to three-phase voltage absent phase 2.The outdoor wiring connect wrong; the wiring diagram;...
  • Page 102 Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code 1.Reconnect the wiring of the suction 1.The wiring of the suction temperature temperature sensor; Suction temperature sensor sensor connect loose; 2.Replace the suction temperature fault 2. The suction temperature sensor is failure; sensor;...
  • Page 103 Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code 2.The sensor of the expansion valve A（thick 2. Replace the sensor for the &inverter tube）is failure; expansion valve A(thick tube); unitary types 3.The sampling circuit is abnormally 3.
  • Page 104 Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code 2.The high-pressure pressure sensor is 2.Replace the high-pressure pressure failure sensor; 3.The sampling circuit of the high-pressure 3.Replace the outdoor control board. pressure sensor is failure 1.The wiring of the low-pressure pressure 1.Reconnect the wiring of the sensor connect loose;...
  • Page 105 Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code as capillary, expansion valve) 4. Normally protection. 1.Reconnect the wiring of the up DC 1.The wiring of the up DC fan motor connect fan motor; loose; 2.Replace the up DC fan motor; 2.
  • Page 106 Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code 1. The wiring of the sensor connect loose; 1. Reconnect the wiring of the sensor; Expansion valve E 2.The sensor of the expansion valve Eis 2. Replace the sensor for the FOR Branch temperature sensor fault failure;...
  • Page 107 Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code the refrigerant of the unit is not Discharge the refrigerant and charge The refrigerant of the unit is not enough enough fault the refrigerant refer to the rating label 1.The wiring of the 4-way valve coil connect 1.
  • Page 108 The following is the fault code table of indoor. Sheet 2 Indoor Error Code List Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code 1. The buttons are failure; 1. Replace the display board; 2. The cable of the display board is 2.
  • Page 109 Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code 1. The connection cable between the indoor unit and the outdoor unit connect 1. Reconnect the connection cable wrong; refer to the indoor and outdoor 2.The communication cable between wiring diagram;...
  • Page 110 Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code 1. Check whether there are something to block the drain hose or the height of the drain hose is too 1. The water level of the drain pan high;...
  • Page 111 Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code 4.Indoor control board is failure. 1. The cable of the water tank water temperature sensor 2 connect loose; 1. Reconnect the cable of the water 2. The cable of the water tank water temperature sensor 2;...
  • Page 112 Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code indoor unit and the outdoor unit is wiring diagram; failure or 4. Replace the indoor control board; the cable between the indoor control 5. Replace the outdoor control board. board to terminal is failure or the cable between...
  • Page 113 Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code 1. The cable of the room temperature 1.Reconnect the cable of the room sensor connect loose; temperature sensor; Indoor ambient 2. The room temperature sensor is 2. Replace the room temperature Temperature Sensor Fault failure;...
  • Page 114 Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code 1. The cable of the temperature sensor 1. Reconnect the able of the temperature sensor of the outlet of The outlet of water the outlet of water side is failure; water side;...
  • Page 115 Fault Fault Description Possible Reason of Abnormality How to Deal With REMARKS code 1.The wiring between the display board to 1. Reconnect the between the display the indoor control board connect loose; board to the indoor control board; 2.The sequence of the wiring between 2.
  • Page 116 The expansion valve or the capillary is failure Replace the expansion valve or the capillary Note 4:Over load in heating mode Overload in heating mode The root cause Corrective measure Discharge the refrigerant, and recharge the refrigerant refer to the The refrigerant is excessive rating label The indoor ambient temperature is too high...
  • Page 117 The following is the fault code table of driver board. Analysis of the Driving Board Fault （Except Free-match 20K&16K DUAL TYPES）, Driver board fault codes trouble shooting details see sheet 5. I． Driver fault code display by indicate lamps of driver board flashing. The times that the lamp flashes equal to fault code.
  • Page 118 Fault Fault Description Possible Reason of Abnormality How to Deal With code Communication between 1,Communication wire connect not well; 1, Check compressor wire connect. driver board and control 2,Driver board fault; 2,Change the driver board; board fault 3,Control board fault; 3,Change the control board ;...
  • Page 119 1 time flash 1 time flash LED ON LED ON LED OFF LED OFF 1.0sec 1.0sec 0.5sec 0.5sec For example，fault code 4： Indicator light flash 4 times1-second short LED on/off Intervals for a period of time again, reports No. 4 fault. LED ON LED OFF 3.0sec...
  • Page 120 Fault Fault Description Possible Reason of Abnormality How to Deal With code 2、 Driver board failure； board; 3、PFC failure； 3、Change the PFC. DC voltage detected abnormal . 1、 Input voltage is too high or 1,Check the power supply. too low; PFC LOW voltage detected failure.

  • Page 121: 8．Checking Components

    8-1. 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 122 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 123 8-2.Check parts unit 1. INDOOR FAN MOTOR Duct type YSK110-40-4-A (HS16) M1:146±15%Ω M2: 33±15%Ω M3: 43±15%Ω A1: 63±15%Ω A2: 23±15%Ω A3: 119±15%Ω DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 124 AUD-24UX4SLH Y6S419C56 AUD-24UX4SLH1 DC MOTOR AUD-36UX4SMH1 DC MOTOR DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 125 AUD-36UX4SMH Y7S423C024 DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 126 48K,60K DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 127 Cassette 25℃ 24K,36K,48K,60K DC-MOTOR DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 128 Ceiling & Floor type YSK110-22-4-A M: 187Ω A1：37.5Ω A2：27.8Ω A3：146Ω 24K-- DC MOTOR SIC-70CW-F1100-6 36K-- DC MOTOR SIC-70CW-F1140-3 48K,60K Y7S423C032 WHITE-BLACK:42.69 BLACK-BLUE:9.19 BLUE-YELLOW:9.09 RED-BLACK:36.41 DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 129 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）. Test in voltage TOOL: Multimeter. Insert screwdriver into to rotate indoor fan motor slowly for 1 revolution or over, and measure voltage “YELLOW”...
  • Page 130 2. OUTDOOR FAN MOTOR MOTOR EXAMINE AND REPAIR Circuit diagram AUW-18U4SZ1, AUW-24U4SA1&AUW-36U4SA1—DC MOTOR 18K-- MOTOR MODEL:ARW4401QH 24K-- MOTOR MODEL:SIC-71FW-D8121-1 36K-- MOTOR MODEL:SIC-71FW-D8121-1 Circuit diagram AUW-18U4SG YDK29-6I-22: Winding BROWN "M"-The Main Winding "A"-The Auxiliary Winding Capacitor Hot Protector 130℃ WHITE PINK PURPLE YELLOW Winding resistance ( at 20℃)
  • Page 131 BROWN YELLOW WINDING M: Main winding A: Auxiliary winding Capacitor Hot protector WHITE BLACK BLUE Winding resistance ( at 20℃) M1:59.1Ω M2:20.3Ω M3:15.3Ω A: 85.8Ω 48K,60K YDK65-6-9024、YDK65-6-9061 Winding resistance ( at 20℃) M:83.0Ω A1:23.4Ω A2:14.0Ω A3: 63.5Ω Test in resistance. TOOL: Multimeter.
  • Page 132 3. COMPRESSOR COMPRESSOR EXAMINE AND REPAIR AUW-18U4SG：DA130S1C-20FZ AUW-18U4SZ1 DA131S1B-28FZ AUW-24U4SZ DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 133 AUW-24U4SA1 DA230S2C-31MT AUW-36U4SA / AUW-36U4SA1 DA250S2C-30MT AUW-48U6SP（TNB306FPNMC） DC INVERTER AIR CONDITIONER TECHNICAL& SERVICE MANUAL V3.3...
  • Page 134 AUW-60U6SP（LNB42FSAMC） 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: 1）Compressor motor lock. 2）Discharge pressure value approaches static pressure value . 3）Compressor motor winding abnormality. Notes：...
  • Page 135 4. INDUCTANCE Familiar error: 1）Sound abnormality 2）Insulation resistance disqualification. 5. STEP MOTOR Test in resistance. 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.
  • Page 136 * The capacitor is “good” if the pointer bounces to a great extent and then gradually returns to its original position. * The range of deflection and deflection time differ according to the capacity of the capacitor. Multimeter Compressor motor capacitor Fan motor capacitor...

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