Airwell AW-YHDM009-H91 Service Manual
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Airwell AW-YHDM009-H91 Service Manual

Wall mounted type dc inverter
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SERVICE MANUAL
Wall Mounted Type
DC Inverter
Model No.
AW-YHDM009-H91
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or
Repair the product or products dealt with in this service information by anyone else could result in serious injury or death
Date 2018-01-18

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Summary of Contents for Airwell AW-YHDM009-H91

  • Page 1 Wall Mounted Type DC Inverter Model No. AW-YHDM009-H91 WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.

  • Page 2: Table Of Contents

    Contents Contents 1. Introduction ....................1 2. Specifications..................7 3. Sensors list ....................8 4. Piping diagrams ..................9 5. Operation range ..................10 6. Printed circuit board connector wiring diagram ........11 7. Functions and control................8. Dimensional drawings................9. Center of gravity ................... 10. Service diagnosis ................11.

  • Page 3: Introduction

    Introduction 1.2 Safety Cautions Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “Warning” and “Caution”. The “Warning” items are especially important since they can lead to death or serious injury if they are not followed closely. The “Caution” items can also lead to serious accidents under some conditions if they are not followed.
  • Page 4 Introduction Warning Do not repair the electrical components with wet hands . Working on the equipment with wet hands can cause an electrical shock Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock.
  • Page 5 Introduction Warning Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to the electrical equipment, the internal wiring regulations and the instruction manual for installation when conducting electrical work. Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire. Be sure to use the specified cable to connect between the indoor and outdoor units.
  • Page 6 Introduction 1.2.3 Inspection after Repair Warning Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet all the way. If the plug has dust or loose connection, it can cause an electrical shock or fire. If the power cable and lead wires have scratches or deteriorated, be sure to replace them.
  • Page 7 Introduction 1.2.5 Using Icons List Icon Type of Information Description A “note” provides information that is not indispensable, but may Note Note nevertheless be valuable to the reader, such as tips and tricks. A “caution” is used when there is danger that the reader, through incorrect manipulation, may damage equipment, loose data, get Caution Caution...

  • Page 8: Specifications

    Specification 2 .Specifications NOMINAL DISTRIBUTION SYSTEM VOLTAGE NOMINAL CAPACITY and NOMINAL INPUT cooling heating 2.6（0.8-3.4） 3.4（1.0-4.6） Capacity rated Btu/h 8870(2730-11600 ） 11600 （ 3410-15690） Power Consumption(Rated) 0.91 ³ 1.2*10 ³ TECHNICAL SPECIFICATIONS-UNIT Dimensions H*W*D 780×245×540 Packaged H*W*D 920×351×620 Dimensions dB(A) Sound level ELECTRICAL SPECIFICATIONS n i l...

  • Page 9: Sensors List

    Specification TECHNICAL SPECIFICATIONS-OTHERS Refrigerant type Refrigerant charge Refrigerant Maximum allowable distance circuit between indoor an outdoor Maximum allowable level difference Refrigerant control Capillary liquid 6.35 Piping connections 9.52 (external diameter) drain Heat insulation type Both liquid and Gas pipes Max. piping Length Max.

  • Page 10: Piping Diagrams

    Pinping diagrams 4 Piping diagrams Domestic air conditioner...

  • Page 11: Operation Range

    Operation range 5 Operation range Domestic air conditioner...

  • Page 12: Printed Circuit Board Connector Wiring Diagram

    Printed circuit board connector wiring diagram 6. Printed circuit board connector wiring diagram Connectors PCB (1) (Control PCB) For AW-YHDM009-H91 1) CN1, CN2 Connector for power N and L 2) CN3 Connector for ground 3) CN23 Connector for DC POWER 15V and 5V to the module board...
  • Page 13 Printed circuit board connector wiring diagram PCB (1) CN23 CN24 CN26 CN27 CN10 CN11 CN15 CN47 CN17 CN22 Domestic air conditioner...
  • Page 14 Printed circuit board connector wiring diagram PCB(2) CN11 CN10 Domestic air conditioner...

  • Page 15: Functions And Control

    Functions and control Wiring diagrams INDOOR UNIT OUTDOOR WIRING DIAGRAM 0010588937 Domestic air conditioner...
  • Page 16 Functions and control 7. Functions and control 7.1 Main functions and control specification 7.1.1 The operation frequency of outdoor unit and its control 7.1.1.1 The operation frequency control of compressor The operation frequency scope of compressor Mode Minimum operation frequency Maximum operation frequency Heating 09K/12K 24 Hz /25Hz...
  • Page 17 Functions and control Wh_c<-2 Max_hz3 99HZ/95 HZ Wh_c<5 Max_hz4 88HZ/87 HZ Wh_c<10 Max_hz5 70HZ/83 HZ Wh_c<17 Max_hz6 59HZ/64 HZ Wh_c<20 Max_hz7 49HZ/60 HZ Wh_c> 20 Max_hz8 42HZ/56 HZ Remarks: The above are the maximum frequency limitations of the complete appliance which are affected by the environment, and they have nothing to do with the ability of the indoor unit.
  • Page 18 Functions and control F-MIN-d(compressor’s Min_hz)< F<F-MAX-d(compressor’s Max_hz) When heating, it is needed to satisfy F-MIN-r (compressor’s Min_hz)< F<F-MAX-r (compressor’s Max_hz) PID control : The innital frequency Sn is determined by Pn . We can calculate Hzoutf according to the value of Kp ,Ki ,Kd, Out_gain,Pn.Then , Fn = Sn + Hzoutf.
  • Page 19 Functions and control Adjust frequency: If |SH|=0, 60s/ 1 step If |SH| 3,and SH=0, 10s/ 1 step. If 3 |SH| 0, 30s/ 1 step. SH= current SH- last SH SH= Ts (suction temp)-Tc1 (indoor coil temp)-Tsh (fixed data, depend on different models, -1~2) 7.1.4 Four way control For the details of defrosting four-way valve control, see the defrosting process.
  • Page 20 Functions and control (09K12K) TC( ) The compressor stops Fgh_t1 63 /63 Fgh_t1 2 Fgh_t2 2 N Decreasing the frequency rapidly Fgh_t2 60 /59 P Decreasing the frequency slowly Fgh_t3 57 /56 Fgh_t3 2 Fgh_t4—2 Q Prohibiting increasing the frequency Fgh_t4 52 /53 R Increasing slowly Fgh_t5 40 /40...
  • Page 21 Functions and control the compressor decreases at the speed of 0.1HZ/second. During the starting process of the compressor, if the AC current is greater than 7.5A, the frequency of the compressor increases at the prohibited speed. During the starting process of the compressor, if the AC current is greater than 6.5A, the frequency of the compressor increases at the speed of no faster than 0.1HZ/second.
  • Page 22 Functions and control modification rate. If during the course of weak magnetic control, the modification rate is still not high enough, enter into the control of decreasing frequency until the alarm of modification rate is relieved. 7.1.5.7 Temperature protection of the outdoor refrigerating coil When the defrosting temperature and the sensor’s temperature are higher than 68 , the frequency of the compressor decreases 1hz/10seconds.
  • Page 23 Functions and control 33.8936 31.7844 29.7796 -1.36 1.29 32.2608 30.2968 28.4267 -1.34 1.28 30.7162 28.8875 27.1431 -1.32 1.26 29.2545 27.5519 25.9250 -1.29 1.24 27.8708 26.2858 24.7686 -1.27 1.22 26.5605 25.0851 23.6704 -1.25 1.20 25.3193 23.9462 22.6273 -1.23 1.18 24.1432 22.8656 21.6361 -1.20 1.16...
  • Page 24 Functions and control 5.2001 4.9430 4.6944 -1.41 1.36 5.0163 4.7630 4.5185 -1.45 1.40 4.8400 4.5905 4.3500 -1.49 1.44 4.6708 4.4252 4.1887 -1.53 1.47 4.5083 4.2666 4.0342 -1.57 1.51 4.3524 4.1145 3.8862 -1.61 1.55 4.2026 3.9686 3.7443 -1.65 1.59 4.0588 3.8287 3.6084 -1.70 1.62...
  • Page 25 Functions and control 1.2583 1.1448 1.0405 -3.43 3.15 1.2226 1.1113 1.0092 -3.48 3.19 1.1880 1.0789 0.9789 -3.53 3.24 1.1546 1.0476 0.9497 -3.58 3.28 1.1223 1.0174 0.9215 -3.64 3.33 1.0910 0.9882 0.8942 -3.69 3.37 1.0607 0.9599 0.8679 -3.74 3.42 1.0314 0.9326 0.8424 -3.80 3.46...
  • Page 26 Functions and control 11096.6531 9212.8101 7641.8972 -2.91 2.42 10365.4565 8622.8491 7166.7474 -2.90 2.42 9687.0270 8074.3787 6724.1389 -2.88 2.41 9057.2314 7564.2244 6311.6413 -2.87 2.41 8472.2852 7089.4741 5927.0206 -2.86 2.40 7928.7217 6647.4547 5568.2222 -2.84 2.39 7423.3626 6235.7109 5233.3554 -2.83 2.39 6953.2930 5851.9864 4920.6791 -2.82 2.38...
  • Page 27 Functions and control 807.3024 723.4134 647.6580 -2.22 2.00 766.4212 687.8205 616.7252 -2.20 1.99 727.8172 654.1596 587.4271 -2.18 1.98 691.3524 622.3161 559.6694 -2.16 1.96 656.8979 592.1831 533.3634 -2.14 1.95 624.3328 563.6604 508.4261 -2.12 1.93 593.5446 536.6540 484.7796 -2.10 1.92 564.4275 511.0760 462.3510 -2.09 1.90...
  • Page 28 Functions and control 104.8443 99.7046 94.7315 -1.28 1.23 100.6112 95.7939 91.1253 -1.25 1.21 96.5692 92.0553 87.6735 -1.23 1.19 92.7088 88.4805 84.3690 -1.20 1.17 89.0211 85.0614 81.2048 -1.18 1.15 85.4976 81.7908 78.1744 -1.15 1.12 82.1303 78.6615 75.2715 -1.13 1.10 78.9116 75.6668 72.4902 -1.10 1.08...
  • Page 29 Functions and control 21.6159 20.4303 19.2924 -1.81 1.74 20.9508 19.7825 18.6626 -1.85 1.77 20.3091 19.1582 18.0563 -1.89 1.81 19.6899 18.5564 17.4723 -1.93 1.85 19.0924 17.9761 16.9098 -1.98 1.89 18.5157 17.4166 16.3680 -2.02 1.93 17.9590 16.8769 15.8458 -2.06 1.96 17.4214 16.3564 15.3427 -2.10 2.00...

  • Page 30: Dimensional Drawings

    Dimensinal drawings 8.Dimensional drawings unit:mm 9.Center of gravity unit:mm Domestic air conditioner...

  • Page 31: Service Diagnosis

    Service diagnosis 10 Service Diagnosis 10.1 Caution for Diagnosis The operation lamp flashes when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation. 2.
  • Page 32 Service diagnosis 10.2 Problem Symptoms and Measures Check the power supply. Check to make sure that the rated voltage is supplied. None of the units operates Check the indoor PCB Check to make sure that the indoor PCB is broken Operation A power failure of 2 to 10 cycles can stop air conditioner Check the power supply.
  • Page 33 Service diagnosis 10.3 Error Codes and Description indoor display Code indication Indoor displaying panel code indication Outdoor Reference fault description (LED1 Page Only For 498 and flash 498A display Other times) (Red/Green Time Run display Indoor and Communication fault Outdoor between indoor Page .43...
  • Page 34 Service diagnosis 10.3.1 Thermistor or Related Abnormality Indoor Display E1: Room temperature sensor failure E2: Heat-exchange sensor failure Outdoor display LED1 flash 10 times Defrost temperature sensor failure LED1 flash 11 times Suction temperature sensor failure LED1 flash 12 times Ambient temperature sensor failure LED1 flash 13 times Discharge temperature sensor failure Method of The temperatures detected by the thermistors are used to determine thermistor errors...
  • Page 35 Service diagnosis 10.3.2 EEPROM abnormal Indoor Display E4: Indoor EEPROM error Indoor display F12: Outdoor EEPROM error; Outdoor LED1 flash 1 times Method of The Data detected by the EEPROM are used to determine MCU Malfunction Detection Malfunction When the data of EEPROM is error or the EEPROM is damaged Decision Conditions Supposed...
  • Page 36 Service diagnosis 10.3.3 Indoor AC fan motor malfunction Indoor Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine Malfunction abnormal fan motor operation Detection Malfunction when the detected rotation feedback signal don’t received in 2 minutes Decision Conditions Supposed...
  • Page 37 Service diagnosis 10.3.4 Outdoor DC fan motor fault Outdoor display LED1 flash 9 times Method of DC fan motor is detected by checking the fan running condition and so on Malfunction Detection Malfunction when the data of EEPROM is error or the EEPROM is damaged Decision Conditions DC fan motor protection dues to the DC fan motor faulty...
  • Page 38 Service diagnosis Domestic air conditioner...
  • Page 39 Service diagnosis 10.3.5 IPM protection / F1 LED1 flash 2 times Outdoor display: Method of IPM protection is detected by checking the compressor running condition and so on Malfunction Detection Malfunction The system leads to IPM protection due to over current Decision The compressor faulty leads to IPM protection Conditions...
  • Page 40 Service diagnosis 10.3.6 Over-current of the compressor Outdoor Display: F2 LED1 flash 3 or 24 or 25 times Method of The current of the compressor is too high Malfunction Detection Malfunction when the IPM Module is damaged Decision or the compressor is damaged. Conditions power supply voltage is too low or too high Supposed...
  • Page 41 Service diagnosis 10.3.7 The communication fault between IPM and outdoor PCB Outdoor display: LED1 flash 4 times Method of Communication is detected by checking the IPM module and the outdoor PCB Malfunction Detection Malfunction The outdoor PCB broken leads to communication fault Decision The IPM module broken leads to communication fault Conditions...
  • Page 42 Service diagnosis 10.3.8 Power Supply Over or under voltage fault Outdoor display: LED1 flash 6 times The power supply is over voltage Method of An abnormal voltage rise or fall is detected by checking the specified voltage detection circuit. Malfunction Detection Malfunction An voltage signal is fed from the voltage detection circuit to the microcomputer...
  • Page 43 Service diagnosis 10.3.9 Overheat Protection For Discharge Temperature Outdoor display: F4 LED1 flash 8 times Method of The Discharge temperature control is checked with the temperature being detected Malfunction by the Discharge pipe thermistor Detection Malfunction when the compressor discharge temperature is above 110 Decision Conditions Supposed...
  • Page 44 Service diagnosis 10.3.10 The communication fault between indoor and outdoor Indoor display outdoor display LED1 flash 15 times Method of Communication is detected by checking the indoor PCB and the outdoor PCB. Malfunction Detection Malfunction The outdoor PCB broken leads to communication fault. Decision The indoor PCB broken leads to communication fault.
  • Page 45 Service diagnosis If the voltage is a constant value The indoor mainboard is of 0V DC to 5V DC.Or the voltage damaged; replace it with a between Communication line(red ) and N(white new one. line) is not close to18V DC when only indoor charged. Test the outdoor power is Check the cable supply 230VAC with a...
  • Page 46 Service diagnosis 10.3.11 Loss of synchronism detection Inverter side current detection is abnormal Outdoor Display LED1 flash 18 times LED1 flash 19 times Method of The position of the compressor rotor can not detected normally Malfunction Detection Malfunction when the wiring of compressor is wrong or the connection is poor; Decision or the compressor is damaged Conditions...
  • Page 47 Service diagnosis 10.3.12 High work-intense protection Outdoor display LED1 flash 21 times Method of High work-intense control is activated in the heating mode if the temperature Malfunction being sensed by the heat exchanger thermistor exceeds the limit. Detection Malfunction Activated when the temperature being sensed by the heat exchanger Decision rises above 65 twices in 30 minutes.

  • Page 48: Performance And Curves Diagrams

    Performance and curves diagrams 11.Performance and curves diagrams 11.1 Cooling capacity-temperature curves performance curves cooling value-temerature table outdoor temp. indoor temp. DB/WB 1964 1968 1896 1813 2182 2435 2335 2264 2135 21/15 2067 2032 1984 1909 2322 2517 2514 2387 2223 24/16 2316...
  • Page 49 Performance and curves diagrams 11.2 Cooling power consumption value- temperature curves performance curves power consumption value-temp.table outdoor temp. indoor temp. DB/WB 1017 21/15 24/16 1028 1064 1115 27/19 1087 1161 30/22 32/23 1017 1157 1238 1036 1190 1263 35/24 power consumption and temp.curves 1500 1300 1100...
  • Page 50 Performance and curves diagrams 11.3 Cooling discharge pressure curves performance curves cooling discharge pressure.table outdoor temp. indoor temp. (humidity 46%) DB/WB 21/15 27/19 35/24 1945 2010 2132 1938 2037 2113 1965 2064 2134 2053 2144 2228 2227 2385 2517 2457 2546 2714 2582...
  • Page 51 Performance and curves diagrams 11.4 Cooling suction pressure curves performance curves cooling suction pressure.table outdoor temp. indoor temp. (humidity 46%) DB/WB 21/15 27/19 35/24 1011 1163 1001 1112 1279 1101 1201 1394 cooling suction pressure and temp curves Domestic air conditioner...
  • Page 52 Performance and curves diagrams 11.5 Heating capacity-temperature curves performance curves heating capacity and indoor/outdoor temp.table indoor temp.(humidity 46%) outdoor temp. DB/WB -7/-8 12/11 18/16 24/20 heating capacity and indoor/outdoor temp.curves Domestic air conditioner...
  • Page 53 Performance and curves diagrams 11.6 Heating power consumption value- temperature curves performance curves power consumption value-temp.table indoor temp.(humidity 46%) outdoor temp. DB/WB -7/-8 12/11 18/16 24/20 power consumption and indoor/outdoor temp.curves 1400 1200 · 1000 -7/-8 12/11 18/16 24/20 outdoor temp.(DB/WB) Domestic air conditioner...
  • Page 54 Performance and curves diagrams 11.7 Heating discharge pressure curves performance curves heating discharge pressure.table indoor temp. outdoor temp DB/WB -7/-8 12/11 18/16 24/20 heating discharge pressure and temp. curves 4000 3500 3000 2500 2000 1500 1000 -7/-8 12/11 18/16 24/20 outdoor temp.(DB/WB) Domestic air conditioner...
  • Page 55 Performance and curves diagrams 11.8 Heating suction pressure curves performance curves heating suction pressure.table indoor temp. outdoor temp DB/WB -7/-8 12/11 1011 1051 1071 18/16 24/20 1197 1237 1257 heating suction pressure and temp. curves 1400 1300 1200 1100 1000 -7/-8 12/11 18/16 24/20 outdoor temp.(DB/WB)

  • Page 56: Circuit Diagrams

    ircuit Diagra 12. Circuit diagrams 12.1 Outdoor unit control board circuit diagrams D 1 6 R 2 0 1 L E D 3 + 5 V 2 2 0 K - 2 W C N 5 0 1 N 4 0 0 7 ( 1 A - 1 0 0 0 V ) R L S 4 1 4 8 C N 9 D 1 3...
  • Page 57 ircuit Diagra 12.2 Module board circuit diagram omestic air conditioner...
  • Page 58 REMOVAL PROCEDURE Wall Mounted Type SERIES:35 WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians.
  • Page 59 Removal Procedure 1.Removal of Outdoor Panel...
  • Page 60 Removal Procedure c i t o i t...
  • Page 61 Removal Procedure Domestic Air Condition...
  • Page 62 Removal Procedure 2.Removal of Electrical Box...
  • Page 63 Removal Procedure 3.Removal of Fan and Fan Motor...
  • Page 64 Removal Procedure 4.Removal of Fan Motor Brcked and Partition...
  • Page 65 Removal Procedure Domestic Air Condition...
  • Page 66 Removal Procedure 5.Removal of Compressor and Heat Exchanger...
  • Page 67 Removal Procedure Domestic Air Condition...

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