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Midea ABSEU-A4-1511 Service Manual

Aurora on-off series
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Aurora ON-OFF SERIES
Service Manual 2015
ABSEU-A4-1511

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Summary of Contents for Midea ABSEU-A4-1511

  • Page 1 Aurora ON-OFF SERIES Service Manual 2015 ABSEU-A4-1511...

  • Page 2: Table Of Contents

    CONTENTS 1. Precaution ..............................3   1.1 Safety Precaution ........................3  1.2 Warning ............................3  2. Function ................................ 6   3. Dimension ..............................7   3.1 Indoor Unit ........................... 7  3.2 Outdoor Unit ..........................11  4. Refrigerant Cycle Diagram ........................16   5 Installation Details ............................

  • Page 3: Precaution

    careful of the case edges and the fins on the condenser and evaporator. 1. Precaution  For installation, always contact the dealer or an authorized service center. 1.1 Safety Precaution  Do not install the product on a  To prevent injury to the user or other defective installation stand.
  • Page 4 It can avoid vibration of water leakage.  Stop operation and close the window  in storm or hurricane. If possible, remove Do not install the product where the the product from the window before the noise or hot air from the outdoor unit could hurricane arrives.
  • Page 5 cleaning or maintaining the product. Be careful and avoid personal injury.  Replace the all batteries in the remote control with new ones of the same type. Do not mix old and new batteries or different types of batteries. There is risk of fire or explosion. ...

  • Page 6: Function

    2. Function Model Names of Indoor/Outdoor Units Capacity Indoor units Outdoor units MSABA-07HRN1-QC2 MOAB30-07HN1-QC2 MSABB-09ARN1-QB8 MOBA30-09HN1-QB8 MSABA-09HRN1-QC2 MOAB31-09HN1-QC2 MSABB-12ARN1-QB6 MOBA30-12HN1-QB6 On-Off MSABB-12HRN1-QC2 MOBA30-12HN1-QC2 MSABD-18ARN1-QB8 MOCA30-18HN1-QB8 MSABD-18HRN1-QC2 MOBA30-18HN1-QC2 MSABE-24ARN1-QB8W MOCA30-24HN1-QB8W MSABE-24HRN1-QB8W MOCA30-24HN1-QB8W MSABF-36HRN1-RC0W MOD30-36HN1-RC0W 2 ways of drainage Filter Cold catalyst filter Louver Position Memory Function Super Ionizer(O) Refrigerant Leakage Detect...

  • Page 7: Dimension

    3. Dimension 3.1 Indoor Unit Model MSABA-07HRN1-QC2 MSABB-09ARN1-QB8 MSABA-09HRN1-QC2 MSABB-12ARN1-QB6 MSABB-12HRN1-QC2 MSABD-18ARN1-QB8 MSABD-18HRN1-QC2 MSABE-24ARN1-QB8W 1080 MSABE-24HRN1-QB8W 1080 MSABF-36HRN1-RC0W 1259...
  • Page 8 For MSABA-07HRN1-QC2，MSABB-09ARN1-QB8，MSABA-09HRN1-QC2，...
  • Page 9 For MSABB-12ARN1-QB6，MSABB-12HRN1-QC2， For MSABD-18ARN1-QB8, MSABD-18HRN1-QC2, For MSABE-24ARN1-QB8W, MSABE-24HRN1-QB8W,...
  • Page 10 For MSABF-36HRN1-RC0W,...

  • Page 11: Outdoor Unit

    3.2 Outdoor Unit More than 30cm More than 60cm (Service space More than 30cm More than 60cm More than 200cm...
  • Page 12 For MOAB30-07HN1-QC2, MOAB31-09HN1-QC2,...
  • Page 13 For MOBA30-12HN1-QC2, MOBA30-18HN1-QC2, MOBA30-09HN1-QB8, MOBA30-12HN1-QB6, 779 W3 487 W1 300 D 770 W 70 W2 25 B1 61.5 A2 12 A1...
  • Page 14 For MOCA30-24HN1-QB8W, MOCA30-18HN1-QB8, MOCA30-24HN1-QB8W,...
  • Page 15 For MOD30-36HN1-RC0W, 1030 W1 946 W 810 H 810 H 455 D3 673 A 403B 455D3 410 D 57 H1 117 H2...

  • Page 16: Refrigerant Cycle Diagram

    4. Refrigerant Cycle Diagram INDOOR OUTDOOR CHECK VALVE LIQUID SIDE (Heating Model only) 2-WAY VALVE CAPILIARY TUBE HEAT HEAT EXCHANGE EXCHANGE (EVAPORATOR) (CONDENSER) T1 Room temp. sensor T2 Evaporator temp. sensor GAS SIDE 4-WAY VALVE 3-WAY VALVE ACCUMULATOR COOLING COMPRESSOR HEATING...

  • Page 17: Installation Details

    5 Installation Details 5.1 Wrench torque sheet for installation Outside diameter Torque Additional tightening torque inch N.cm N.cm Ф6.35 1500(153kgf.cm) 1600(163kgf.cm) Ф9.52 2500(255kgf.cm) 2600(265kgf.cm) Ф12.7 3500(357kgf.cm) 3600(367kgf.cm) Ф15.9 4500(459kgf.cm) 4700(479kgf.cm) Ф19 6500(663kgf.cm) 6700(683kgf.cm) 5.2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Rated current of appliance Nominal cross-sectional area (mm²) >3 and ≤6...

  • Page 18: Pipe Length And The Elevation

    5.3 Pipe length and the elevation The pipe length and refrigerant amount: Standard Max. Max. Additional Pipe size Model length Elevation Length refrigerant Liquid B (m) A (m) (g/m) 3/8’’ 1/4’’ MSABA-07HRN1-QC2+ MOAB30-07HN1-QC2 (Ф9.52) (Ф6.35) 3/8’’ 1/4’’ MSABA-09HRN1-QC2+ MOAB31-09HN1-QC2 (Ф9.52) (Ф6.35) 3/8’’...

  • Page 19: Installation For The First Time

    4) Fully open the handle Lo of the manifold 5.4 Installation for the first time valve. 5) Operate the vacuum pump to evacuate. Air and moisture in the refrigerant system have 6) Make evacuation for 30 minutes and check undesirable effects as below: whether the compound meter indicates ●...

  • Page 20: Adding The Refrigerant After Running The System For Many Years

    charge set. Purge the air by loosening the flare and press the check valve on the charge set to nut on the 2-way valve approximately 45’ for 3 purge the air (be careful of the liquid seconds then closing it for 1 minute; repeat 3 refrigerant).

  • Page 21: Re-Installation While The Indoor Unit Need To Be Repaired

    mode. immediately 5) Open the valves (Low side) on the charge set Do this quickly so that the gauge ends up and charge the system with liquid refrigerant. indicating 0.3 to 0.5Mpa. 6).When the electronic scale displays the proper Disconnect the charge set, and tighten the 2-way weight (refer to the gauge and the pressure of the and 3-way valve’s stem nuts.

  • Page 22: Re-Installation While The Outdoor Unit Need To Be Repaired

    7). Mount the valve stems nuts and the service 1). Connect the charge hose to the charging port cap cylinder, open the 2-way valve and the 3-way Be sure to use a torque wrench to tighten the valve service port cap to a torque 18N.m. Connect charge hose...

  • Page 23: Operation Characteristics

    6. Operation Characteristics Mode Cooling operation Heating operation Drying operation Temperature 17℃~32℃ 0℃~30℃ 10℃~32℃ Room temperature (62℉~90℉) (32℉~86℉) (50℉~90℉) 18℃~43℃ -7℃~24℃ 11℃~43℃ Outdoor temperature (64℉~109℉) (20℉~78℉) (52℉~109℉) -7℃~43℃ (20℉~109℉) 18℃~52℃ (For the models with low (64℉~126℉) temperature cooling system) (For special tropical models) 18℃~52℃...

  • Page 24: Electronic Function

    7. Electronic function NOTE: 7.1 Abbreviation A guide on using the infrared remote is not T1: Indoor room temperature included in this literature package. T2: Coil temperature of evaporator T3: Coil temperature of condenser T4: Outdoor ambient temperature T5: Compressor discharge temperature 7.2 Display function 7.2.1 Icon explanation on indoor display board.

  • Page 25: Main Protection

    overload. 7.3 Main Protection Open condition: 7.3.1 Time Delay at restart for compressor. When compressor is active, the value of the Less than 1 minute delay for the 1 time Coil temperature of evaporator T2 has no start-up and 3 minutes delay for others. change or very little change.

  • Page 26: Operation Modes And Functions

    protection. 7.4 Operation Modes and Functions 7.4.1 Fan mode 7.4.2.3 Indoor fan running rules (1) Outdoor fan and compressor stop. In cooling mode, indoor fan runs all the time (2) Temperature setting function is disabled, and the speed can be selected as high, and no setting temperature is displayed.
  • Page 27 be set to high/med/low/auto. And the anti-cold wind function has the priority. Auto fan action: Compressor Off T1-TS Compressor On Medium When high condenser temp. T3 is more than setting value, the compressor will stop. During the protection, the outdoor fan keeps working.
  • Page 28 7.4.5.3 The evaporator anti-freezing protection is the same as that in cooling mode. 7.4.3.5 High evaporator coil temp.T2 protection: 7.4.6 Forced operation function Forced cooling mode: Compressor off The compressor and outdoor fan keep running Outdoor fan motor off and the indoor fan runs at low speed. After Compressor and outdoor Compressor and outdoor running for 30 minutes, AC will turn to auto...
  • Page 29 resume the previous operation setting (not PCB will control the unit according to the including swing function) automatically after 3 temperature from follow me signal, and the minutes when power returns. temperature collection function room If the memorization condition is forced cooling temperature sensor will be shielded, but the mode, the unit will run in cooling mode for 30 error detective function of room temperature...

  • Page 30: Troubleshooting

    8. Troubleshooting 8.1 Indoor Unit Error Display Operation lamp Timer lamp Display LED STATUS ☆ 1 time EEPROM parameter error ☆ 2 times Zero-crossing signal detection error ☆ 3 times Indoor fan speed has been out of control Indoor room temperature sensor T1 open circuit or ☆...

  • Page 31: Diagnosis And Solution

    8.2 Diagnosis and Solution 8.2.1 EEPROM parameter error diagnosis and solution(E1) Error Code Malfunction decision Indoor or outdoor PCB main chip does not receive feedback conditions from EEPROM chip. Supposed causes Installation mistake ● PCB faulty ● Trouble shooting: EEPROM: a read-only memory whose contents can be erased and reprogrammed using a pulsed voltage.
  • Page 32 8.2.2 Zero crossing detection error diagnosis and solution(E2) Error Code Malfunction decision When PCB does not receive zero crossing signal feedback for 4 conditions minutes or the zero crossing signal time interval is abnormal. Supposed causes Connection mistake ● PCB faulty ●...
  • Page 33 8.2.3 Fan speed has been out of control diagnosis and solution(E3) Error Code Malfunction decision When indoor fan speed keeps too low (300RPM) for certain time, conditions the unit will stop and the LED will display the failure. Supposed causes Wiring mistake ●...
  • Page 34 Index1: 1: Indoor AC Fan Motor Power on and set the unit running in fan mode at high fan speed. After running for 15 seconds, measure the voltage of pin1 and pin2. If the value of the voltage is less than 100V(208~240V power supply)or 50V(115V power supply), the PCB must has problems and need to be replaced.
  • Page 35 8.2.4 Open circuit or short circuit of temperature sensor diagnosis and solution(E5) E5/E6/ E7 Error Code Malfunction decision If the sampling voltage is lower than 0.06V or higher than 4.94V, conditions the LED will display the failure. Supposed causes Wiring mistake ●...
  • Page 36 8.2.5 Refrigerant Leakage Detection diagnosis and solution(EC) Error Code Malfunction decision Define the evaporator coil temp.T2 of the compressor just starts conditions running as Tcool. In the beginning 5 minutes after the compressor starts up, if T2 ＜Tcool－2℃ does not keep continuous 4 seconds and this situation happens 3 times, the display area will show “EC”...
  • Page 37 8.2.6 Lake of phase or Phase sequence error diagnosis and solution(E8) Error Code Malfunction decision When the two phases of B and C are reversed or lacked, the AC will conditions stop working. Supposed causes Power supply mistake ● Outdoor PCB faulty ●...
  • Page 38 8.2.7 Indoor / outdoor unit’s communication diagnosis and solution(E9) Error Code Malfunction decision Indoor unit does not receive the feedback from outdoor unit during conditions seconds. Supposed causes Wiring mistake ● Indoor or outdoor PCB faulty ● Trouble shooting:...
  • Page 39 Main parts check 1.Temperature sensor checking Disconnect the temperature sensor from PCB, measure the resistance value with a tester. Temperature Sensors. Room temp.(T1) sensor, Indoor coil temp.(T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Compressor discharge temp.(T5) sensor. Measure the resistance value of each winding by using the multi-meter.
  • Page 40 Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (°C--K) °C °F °C °F °C °F °C °F K Ohm K Ohm K Ohm K Ohm 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249 0.61148 101.517 11.5 2.19073 0.59386 96.3423 10.9731 2.11241 0.57683 89.5865...
  • Page 41 Appendix 2 Temperature Sensor Resistance Value Table for T5 (°C --K) °C °F °C °F °C °F °C °F K Ohm K Ohm K Ohm K Ohm 542.7 68.66 13.59 3.702 511.9 65.62 13.11 3.595 62.73 12.65 3.492 455.9 59.98 12.21 3.392 430.5...

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