Midea MFA-12HRN1 General Information Manual
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Midea MFA-12HRN1 General Information Manual

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MCAC-UTSM-2009-03
Contents

Part 1 General Information ........................................................................ 1

Part 2 Indoor Units ...................................................................................... 5

Part 3 Outdoor Units ................................................................................. 17

Part 4 Installation ...................................................................................... 36

Part 5 Control ............................................................................................ 56

※The specifications, designs, and information in this book are subject to change without notice for
product improvement.
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  • Page 1: Part 1 General Information

    MCAC-UTSM-2009-03 Contents Part 1 General Information ................ 1 Part 2 Indoor Units ..................5 Part 3 Outdoor Units ................. 17 Part 4 Installation ..................36 Part 5 Control .................... 56 ※The specifications, designs, and information in this book are subject to change without notice for product improvement.

  • Page 3: Table Of Contents

    MCAC-UTSM-2009-03 General Information Part 1 General Information 1. Model Names of Indoor/Outdoor Units ....... 2 2. External Appearance ............. 2 2.1 Indoor Units .................. 2 2.2 Outdoor Units ................2 3. Nomenclature ..............3 4. Features ................. 4 General Information...

  • Page 4: Model Names Of Indoor/Outdoor Units

    Model Names of Indoor/Outdoor Units MCAC-UTSM-2009-03 1. Model Names of Indoor/Outdoor Units 1.1 Indoor Units Model name Dimension (mm) Net/Gross weight (kg) Power supply Width: 700 MFA-12HRN1 Height: 600 15/20 220~240V-1ph-50Hz Depth: 210 Width: 700 MFA-18HRN1 Height: 600 15/20 220~240V-1ph-50Hz...

  • Page 5: Nomenclature

    C: Cooling Only H: Cooling & Heating Capacity (× 1000Btu/h) Product Series A: 1st Designed Product Category F: Console Type Midea 3.2 Outdoor Unit M O N - 12 H N1- Q Q: Quickly Coupling Refrigerant N1: R410A Function Code C: Cooling Only H: Cooling &...

  • Page 6: Features

    Features MCAC-UTSM-2009-03 4. Features 1. Achieves set temperature more quickly ——air supplying from top and bottom or from top only ——air inlet from four directions 2. Compact unit body, space saving ——this unit body is very thin and harmonious with room. It is beautiful, elegant and space saving. ——light weight and compact.

  • Page 7: Part 2 Indoor Units

    MCAC-UTSM-2009-03 Indoor Units Part 2 Indoor Units 1. Specifications ..............6 2. Dimensions ..............7 3. Service Space ..............7 4. Wiring Diagrams ............8 5. Air Velocity and Temperature Distributions ....9 6. Capacity Tables ............10 7. Electric Characteristics ..........13 8.

  • Page 8: Specifications

    Specifications MCAC-UTSM-2009-03 1. Specifications Model MFA-12HRN1 MFA-18HRN1 MFA-12HRN1-Q Code 220044000090 220044100280 220044000100 Power supply V-ph-Hz 220~240-1-50 220~240-1-50 220~240-1-50 Capacity Btu/h 12000 18000 12000 Cooling Input 1096 1650 1101 Capacity Btu/h 13380 19600 13300 Heating Input 1122 1715 1117 Model RD-280-20-8A...

  • Page 9: Dimensions

    MCAC-UTSM-2009-03 Dimensions 2. Dimensions 3. Service Space Indoor Units...

  • Page 10: Wiring Diagrams

    Wiring Diagrams MCAC-UTSM-2009-03 4. Wiring Diagrams 4.1 MFA-12HRN1 MFA-18HRN1 4.2 MFA-12HRN1-Q Indoor Units...

  • Page 11: Air Velocity And Temperature Distributions

    MCAC-UTSM-2009-03 Air Velocity and Temperature Distributions 5. Air Velocity and Temperature Distributions Discharge angle 60 Airflow velocity Temperature Indoor Units...

  • Page 12: Capacity Tables

    Capacity Tables MCAC-UTSM-2009-03 6. Capacity Tables 6.1 MFA-12HRN1 Cooling capacity Cooling Outdoor conditions (DB) Indoor Conditions (kW) 21ºC 28ºC 35ºC 43ºC 3.30 3.14 2.98 2.85 21/15ºC DB/WB 2.44 2.41 2.38 2.39 Input 0.91 0.99 1.03 1.06 3.39 3.23 3.07 2.88 24/17ºC DB/WB...
  • Page 13 MCAC-UTSM-2009-03 Capacity Tables 6.2 MFA-18HRN1 Cooling capacity Cooling Outdoor conditions (DB) Indoor Conditions (kW) 21ºC 28ºC 35ºC 43ºC 5.46 5.19 4.93 4.72 21/15ºC DB/WB 4.04 4.00 3.94 3.96 Input 1.32 1.43 1.50 1.55 5.62 5.35 5.09 4.77 24/17ºC DB/WB 4.21 4.18 4.12 4.01...
  • Page 14 Capacity Tables MCAC-UTSM-2009-03 6.3 MFA-12HRN1-Q Cooling capacity Cooling Outdoor conditions (DB) Indoor Conditions (kW) 21ºC 28ºC 35ºC 43ºC 3.30 3.14 2.98 2.85 21/15ºC DB/WB 2.44 2.41 2.38 2.39 Input 0.91 0.99 1.03 1.07 3.39 3.23 3.07 2.88 24/17ºC DB/WB 2.54 2.52...

  • Page 15: Electric Characteristics

    254V 0.156 0.02 0.125 Remark: MCA: Min. Current Amps. (A) MFA: Max. Fuse Amps. (A) KW: Fan Motor Rated Output (kW) FLA: Full Load Amps. (A) 8. Sound Levels Noise level dB(A) Model Highest Higher MFA-12HRN1/ MFA-12HRN1-Q MFA-18HRN1 Indoor Units...

  • Page 16: Exploded View

    Exploded View MCAC-UTSM-2009-03 9. Exploded View 9.1 MFA-12HRN1 MFA-18HRN1 Part Name Quantity Part Name Quantity Panel frame ass'y 14.1 Main control board ass'y Base ass'y 14.2 Wire joint Filter 14.3 Dial-up board ass'y Air fresh net 14.4 Display board ass'y Formaldehyde-killer 14.5...
  • Page 17 MCAC-UTSM-2009-03 Exploded View 9.2 MFA-12HRN1-Q Part Name Quantity Part Name Quantity Panel frame ass'y 14.2 Wire joint Base ass'y 14.3 Dial-up board ass'y Filter 14.4 Display board ass'y Air fresh net 14.5 Room temp. sensor ass'y Formaldehyde-killer Wire clamp Air guide ring ass'y...

  • Page 18: Accessories

    Accessories MCAC-UTSM-2009-03 10. Accessories 10.1 MFA-12HRN1/ MFA-18HRN1 Name Shape Quantity Hook Installation fittings Remote controller Frame Remote controller & Its Frame Mounting screw(ST2.9×10-C-H) Alkaline dry batteries (AM4) Installation manual Others Owner's manual 10.2 MFA-12HRN1-Q Name Shape Quantity Hook Installation fittings...

  • Page 19: Mcac-Utsm

    MCAC-UTSM-2009-03 Outdoor Units Part 3 Outdoor Units 1. Specifications .............. 18 2. Dimensions ..............19 3. Service Space .............. 20 4. Piping Diagrams ............20 5. Wiring Diagrams ............21 6. Electric Characteristics ..........24 7. Operation Limits ............24 8.

  • Page 20: Specifications

    1500 2000 1500 Max. input current Starting current 29.9 31.8 29.9 Model PA140X2C-4FT PA200X2CS-4KU1 PA140X2C-4FT Type Rotary Rotary Rotary Brand Midea-TOSHIBA Midea-TOSHIBA Midea-TOSHIBA Supplier Midea-TOSHIBA Midea-TOSHIBA Midea-TOSHIBA Capacity Btu/h 11566.68 16787.04 11566.68 Input 1150 1670 1150 Compressor Rated current (RLA) 7.81...

  • Page 21: Dimensions

    MCAC-UTSM-2009-03 Dimensions 2. Dimensions 2.1 MON-12HN1 MON-12HN1-Q 2.2 MON-18HN1 Outdoor Units...

  • Page 22: Service Space

    Service Space MCAC-UTSM-2009-03 3. Service Space 4. Piping Diagrams Indoor units Outdoor unit condenser temp. sensor filter evaporator temp. sensor 4-way valve one way valve stop valve Throttle capiliary room temp. sensor stop valve compressor Outdoor Units...

  • Page 23: Wiring Diagrams

    MCAC-UTSM-2009-03 Wiring Diagrams 5. Wiring Diagrams 5.1 MON-12HN1 Outdoor Units...

  • Page 24: Width

    Wiring Diagrams MCAC-UTSM-2009-03 5.2 MON-18HN1 Outdoor Units...

  • Page 25: Width

    MCAC-UTSM-2009-03 Wiring Diagrams 5.3 MON-12HN1-Q Outdoor Units...

  • Page 26: Electric Characteristics

    Electric Characteristics MCAC-UTSM-2009-03 6. Electric Characteristics Outdoor Unit Power Supply Compressor Model Voltage Min. Max. TOCA MON-12HN1 220~240V 198V 254V 29.9 0.024 0.275 MON-18HN1 220~240V 198V 254V 31.8 7.81 0.053 0.592 MON-12HN1-Q 220~240V 198V 254V 29.9 0.024 0.275 Remark: MCA: Min. Current Amps. (A) TOCA: Total Over-current Amps.

  • Page 27: Sound Levels

    MCAC-UTSM-2009-03 Sound Levels 8. Sound Levels Outdoor Unit Microphone 1.0m Note: H= 0.5 × height of outdoor unit Model Noise level dB(A) MON-12HN1 52.8 MON-18HN1 55.5 MON-12HN1-Q 52.6 Outdoor Units...

  • Page 28: Exploded View

    Exploded View MCAC-UTSM-2009-03 9. Exploded View 9.1 MON-12HN1 Part Name Quantity Part Name Quantity Fan motor High pressure valve ass'y Motor bracket ass'y High pressure valve Rear net Strainer Condenser ass'y One way valve Condenser Base ass'y Condenser output pipe Grille Condenser connecting pipe ass'y Front panel...
  • Page 29 MCAC-UTSM-2009-03 Exploded View 9.2 MON-18HN1 Part Name Quantity Part Name Quantity Top cover ass'y Grille Foam Small handle Motor bracket ass'y E-part box ass'y Rear net frame 20.1 Wire joint, 4p Fan motor 20.2 Compressor capacitor Axial flow fan 20.3 Electric installation board Compressor 20.4...
  • Page 30 Exploded View MCAC-UTSM-2009-03 9.3 MON-12HN1-Q Part Name Quantity Part Name Quantity Fan motor Big handle Motor bracket ass'y Drainage cover Rear net Valve plate Condenser ass'y High pressure valve ass'y Condenser 10.1 One way valve Condenser output pipe 10.2 Filter ass'y Condenser connecting pipe ass'y Base ass'y Condenser inlet pipe ass'y...

  • Page 31: Troubleshooting

    MCAC-UTSM-2009-03 Troubleshooting 10. Troubleshooting 10.1 Indoor Unit Malfunction Indoor unit display panel Running lamp Timer lamp Defrosting lamp Malfunction × × Room temp. sensor checking channel is abnormal ☆ × × Evaporator temp. sensor checking channel is abnormal ☆ Condenser temp. sensor checking channel is abnormal ☆...
  • Page 32 Troubleshooting MCAC-UTSM-2009-03 2. Defrosting lamp flash at 5Hz Defrosting lamp flash at 5Hz Judge: Evaporator temp. sensor checking channel is abnormal Validate: Check whether the resistance of the evaporator Replace the evaporator temp. sensor temp. sensor is correct according to Annex 1 Replace the indoor main board 3.
  • Page 33 MCAC-UTSM-2009-03 Troubleshooting 4. Timer lamp flash at 5Hz Timer flash at 5Hz In-outdoor unit communication malfunction Judge 1: Check whether the wiring of communication line is break off Connect the wiring well Judge 2: Check whether the wiring of L, N and S is wrong Connect the wiring of L, N and S rightly Replace the PCB Outdoor Units...
  • Page 34 Troubleshooting MCAC-UTSM-2009-03 5. Running lamp and Defrosting lamp flash at 5Hz, the Timer lamp light Running lamp and Defrosting lamp flash at 5Hz, the Timer lamp light DC fan malfunction Judge 1: Check whether the wiring of DC fan is break off Connect the wiring well Replace the DC fan Judge 2: Check whether the DC fan is failure...
  • Page 35 MCAC-UTSM-2009-03 Troubleshooting 10.2 Outdoor Unit Malfunction LED1 LED2 LED3 Malfunction × In-outdoor unit communication malfunction ☆ ☆ × T3 condenser pipe temp. sensor malfunction ☆ ☆ × Extinguish, Flash ☆ 1. LED1 and LED3 flash LED1 and LED3 flash In-outdoor unit communication malfunction Judge 1: Check whether the wiring of communication line is break off Connect the wiring well Judge 2: Check whether the wiring of L, N and S is wrong...
  • Page 36 Troubleshooting MCAC-UTSM-2009-03 2. LED2 and LED3 flash LED2 and LED3 flash T3 condenser pipe temp. sensor malfunction Connect it well Check whether the temp. sensor is connected well Check whether the resistance of the temp. sensor is correct Replace the temp. sensor according to Annex 1 Replace the PCB Outdoor Units...
  • Page 37 MCAC-UTSM-2009-03 Troubleshooting Appendix Indoor Temp. and Pipe Temp. Sensor Resistance Value Table (℃--K) ℃ ℃ ℃ ℃ 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 11.5000 2.19073 0.59386 96.3423 10.9731 2.11241 0.57683 89.5865 10.4736...
  • Page 38 Installation MCAC-UTSM-2009-03 Part 4 Installation 1. Installation Place ............37 2. Installation of Indoor Unit ........... 38 3. Installation of outdoor unit ......... 40 4. Installation of the Connecting Pipe ......41 5. Connect the Drain Pipe ..........48 6. Wiring ................50 7.

  • Page 39: Installation Place

    MCAC-UTSM-2009-03 Installation Place 1. Installation Place 1.1 The indoor Unit There is enough room for installation and maintenance. The air outlet and the air inlet are not impeded, and the influence of external air is the least. The air flow can reach throughout the room. The connecting pipe and drainpipe could be extracted out easily.

  • Page 40: Installation Of Indoor Unit

    Installation of Indoor Unit MCAC-UTSM-2009-03 2. Installation of Indoor Unit 2.1 Service Space The indoor unit should be installed in a location that meets the following requirements: There is enough room for installation and maintenance. (Refer to the following figure ) The outlet and the inlet are not impeded, and the influence of external air is the least.
  • Page 41 MCAC-UTSM-2009-03 Installation of Indoor Unit 2.2 Installation the main body Fix the hook with tapping screw onto the wall Hang the indoor unit on the hook. (The bottom of body can touch with floor or suspended, but the body must install vertically.) Installation...

  • Page 42: Installation Of Outdoor Unit

    Installation of outdoor unit MCAC-UTSM-2009-03 3. Installation of outdoor unit 3.1 Necessary space for Installation and Maintenance If possible, please remove the obstacles nearby to prevent the performance from being impeded by too little of air circulation. The minimum distance between the outdoor unit and obstacles described in the installation chart doesn’t mean that the same is applicable to the situation of an airtight room.

  • Page 43: Installation Of The Connecting Pipe

    Installation of the Connecting Pipe 4. Installation of the Connecting Pipe Caution: For your safety, always wear safety eye wear and work gloves when connecting the pipes. 4.1 MFA-12HRN1-Q (Quick connecter) Remove the water tray before performing the connection. Installation...
  • Page 44 Installation of the Connecting Pipe MCAC-UTSM-2009-03 To connect the couplings: Step 1: Ensure that the handle on the male coupling is in a reclined position away from the mating male coupling. Step 2: Retract the “Release Sleeve” on female coupling, insert the male coupling located on the indoor unit into the female coupling.
  • Page 45 MCAC-UTSM-2009-03 Installation of the Connecting Pipe 4.2 MFA-12HRN1and MFA-18HRN1 Check whether the height drop between the indoor unit and outdoor unit, the length of refrigerant pipe, and the number of the bends meet the following requirements: Capacity(Btu/h) 12000 18000 The max. height drop The length of refrigerant pipe Less than 15m Less than 20m...
  • Page 46 Installation of the Connecting Pipe MCAC-UTSM-2009-03 How to take indoor unit apart to connect the pipes 1. Open the front panel Slide the two stoppers on the left and right sides until they click. 2. Remove the front panel Remove the string. Allowing the front panel to fall forward will enable you to remove it.
  • Page 47 MCAC-UTSM-2009-03 Installation of the Connecting Pipe 3. Remove the face plate Remove the four screws. Opening bottom of face plate for a angle that is 30 degree, then the top of face plate will be take up. How to take outdoor unit apart to connect the pipes Remove the water tray How to connect the pipes 1.
  • Page 48 Installation of the Connecting Pipe MCAC-UTSM-2009-03 Insert a flare nut into a pipe and flare the pipe. Refer to the following table for the dimension of flare nut spaces. Flare dimension (A) Pipe gauge Tightening torque Flare shape 15 ～ 16N.m Φ6.4 (153 ～...
  • Page 49 MCAC-UTSM-2009-03 Installation of the Connecting Pipe How to expel the air with a vacuum pump Stop valve operation introduction Opening stop valve Remove the cap and turn the valve counter clock-wise with the hexagon wrench. Turn it until the shaft stops. Do not apply excessive force to the stop valve. Doing so may break the valve body, as the valve is not a backseat type.

  • Page 50: Connect The Drain Pipe

    Connect the Drain Pipe MCAC-UTSM-2009-03 4.2.2 Additional Refrigerant Charge Caution: Refrigerant cannot be charged until field wiring has been completed. Refrigerant may only be charged after performing the leak test and the vacuum pumping. When charging a system, care shall be taken that its maximum permissible charge is never exceeded, in view of the danger of liquid hammer.
  • Page 51 MCAC-UTSM-2009-03 Connect the Drain Pipe 5.2 Drainage test Check whether the drainpipe is unhindered. New built house should have this test done before paving the ceiling. 5.3 Install the drain joint of the outdoor unit Fit the seal into the drain elbow, then insert the drain elbow into the base pan hole of outdoor unit, rotate 90°to securely assemble them.

  • Page 52: Wiring

    Wiring MCAC-UTSM-2009-03 6. Wiring 6.1 MFA-12HRN1-Q (Quick connecter) Attention: Make sure the power supply has been cut off when inserting or pulling out the plug connecters. The connection cables of indoor and outdoor units have been connected to the terminals on the control board.
  • Page 53 MCAC-UTSM-2009-03 Wiring 6.2 MFA-12HRN1 and MFA-18HRN1 Caution: The appliance shall be installed in accordance with national wiring regulations. The air conditioner should use separate power supply with rated voltage. The external power supply to the air conditioner should have ground wiring, which is linked to the ground wiring of the indoor and outdoor unit.
  • Page 54 Wiring MCAC-UTSM-2009-03 Dissemble the bolts from the cover. (If there isn't a cover on the outdoor unit, disassemble the bolts from the maintenance board, and pull it in the direction of the arrow to remove the protection board.) Connect the connective cables to the terminals as identified with their respective matched numbers on the terminal block of indoor and outdoor units.
  • Page 55 MCAC-UTSM-2009-03 Wiring 6.2.3 Wiring figure Installation...
  • Page 56 Wiring MCAC-UTSM-2009-03 Note: All the pictures in this manual are for explanation purpose only. They may be slightly different from the air conditioner you purchased (depend on model).The actual shape shall prevail. Installation...

  • Page 57: Test Operation

    MCAC-UTSM-2009-03 Test Operation 7. Test Operation The test operation must be carried out after the entire installation has been completed. Please confirm the following points before the test operation: The indoor unit and outdoor unit are installed properly. Tubing and wiring are correctly completed. The refrigerant pipe system is leakage-checked.
  • Page 58 Control MCAC-UTSM-2009-03 Part 5 Control 1. Wireless remote controller R51D/E ......57 Control...
  • Page 59 MCAC-UTSM-2009-03 Wireless remote controller R51D/E 1. Wireless remote controller R51D/E 1.1 Remote Controller Specifications Model R51D/E R51D/CE ， Rated Voltage 3.0V(Alkaline dry batteries LR03 2) × Lowest Voltage of CPU 2.0V Emitting Signal Reaching Distance 8m (when using 3.0 voltage, Signal Range it Gets 11m) 。...
  • Page 60 Wireless remote controller R51D/E MCAC-UTSM-2009-03 TIMER ON Button: Press this button to preset the time ON (start to operate). Each press will increase the time ON setting in 30minutes increments. When the setting time displays 10:00, each press will increase the time ON setting in 60 minutes increments. To cancel the time ON program, simply adjust the time ON to 0:00.

This manual is also suitable for:

Mfa-18hrn1Mfa-12hrn1-q

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