Midea MOU-12HDN1 Service Manual
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Midea MOU-12HDN1 Service Manual

50hz r410a dc inverter
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MIDEA LCAC
50Hz R410A DC Inverter
Service Manual
2012

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Summary of Contents for Midea MOU-12HDN1

  • Page 1 MIDEA LCAC 50Hz R410A DC Inverter Service Manual 2012...
  • Page 3 MLCAC-UTSM-2010-10 Contents Part 1 General Information ....................1 Part 2 Indoor Units ......................7 Part 3 Outdoor Units ......................74 Part 4 Installation ......................115 Part 5 Control ........................126 ※The specifications, designs, and information in this book are subject to change without notice for product improvement.

  • Page 5: Table Of Contents

    MLCAC-UTSM-2010-10 General Information Part 1 General Information 1. Model Names of Indoor/Outdoor Units ......2 2. External Appearance ............3 2.1 Indoor Units ................. 3 2.2 Outdoor Units ................4 3. Nomenclature ..............5 4. Features ................6 General Information...

  • Page 6: Model Names Of Indoor/Outdoor Units

    √ 1.2 Outdoor Units Model of outdoor unit and corresponding indoor unit Universal Outdoor unit Model Compressor type Compressor Brand Matched indoor units MCA2-12HRDN1-Q MTB-12HWDN1 MOU-12HDN1 Rotary DC Inverter GMCC MUB-12HRDN1 MFA-12HRDN1 MCA2-18HRDN1-Q MTB-18HWDN1 MOUA-18HDN1-C0 Scroll DC Inverter Shenyang SANYO...

  • Page 7: External Appearance

    MLCAC-UTSM-2010-10 External Appearance 2. External Appearance 2.1 Indoor Units Duct Ceiling & Floor Four-way Cassette New Compact Four-way cassette Console General Information...

  • Page 8: Outdoor Units

    External Appearance MLCAC-UTSM-2010-10 2.2 Outdoor Units MOUA-18HDN1-C0 MOU-12HDN1 MOU-30HDN1, MOUB-36HDN1-R MOUB-24HDN1 MOUB-36HDN1-Q, MOU-48HDN1, MOUB-48HDN1-R MOUA-60HRDN1, MOUD-60HDN1-R General Information...

  • Page 9: Nomenclature

    C Cassette Type F Console Type T Duct Type U Ceiling & Floor Type H High Static Pressure Duct Type Midea 3.2 Outdoor Unit M O U D - 60 H D N1- R Power Supply R 380~415V, 3N, 50Hz...

  • Page 10: Features

    Features MLCAC-UTSM-2010-10 4. Features 4.1 Universal outdoor unit design Indoor unit with the same capacity can match with the same outdoor unit. 4.2 High efficiency and energy saving. Thanks to the DC inverter technology and optimized piping system, the EER and COP of whole series can easily reach A-class.
  • Page 11 MLCAC-UTSM-2010-10 Indoor Units Part 2 Indoor Units New Four-way Cassette Type (Compact) ......8 Four-way Cassette Type ............. 17 Duct Type ................31 Ceiling & Floor Type ............45 Console Type ............... 61 Indoor Units...
  • Page 12 New Four-way Cassette Type (Compact) MLCAC-UTSM-2010-10 New Four-way Cassette Type (Compact) 1. Features ......................9 2. Dimensions ....................10 3. Service Space ....................10 4. Wiring Diagrams ................... 11 5. Air Velocity and Temperature Distributions(Reference Data) ....12 6. Electric Characteristics ................13 7.

  • Page 13: Features

    MLCAC-UTSM-2010-10 Features 1. Features (1) Low operation noise ---Streamline plate ensures quietness ---Creates natural and comfortable environment (2) Efficient cooling ---Equal, fast and wide—range cooling (3) The adoption of the most advanced 3- Dimensional Screw fan ---Reduces the air resistance passing through ---Smoothes the air flow ---Makes air speed distribution to the heat exchange uniform (4) Improvement for easy installation and maintenance...

  • Page 14: Dimensions

    Dimensions MLCAC-UTSM-2010-10 2. Dimensions 3. Service Space New Four-way Cassette (Compact)

  • Page 15: Wiring Diagrams

    MLCAC-UTSM-2010-10 Wiring Diagrams 4. Wiring Diagrams MCA2-12HRDN1-Q MCA2-18HRDN1-Q New Four-way Cassette (Compact)

  • Page 16: Air Velocity And Temperature Distributions(Reference Data)

    Air Velocity and Temperature Distributions(Reference Data) MLCAC-UTSM-2010-10 5. Air Velocity and Temperature Distributions(Reference Data) Airflow velocity Temperature New Four-way Cassette (Compact)

  • Page 17: Electric Characteristics

    MLCAC-UTSM-2010-10 Electric Characteristics 6. Electric Characteristics Power Indoor Units Supply Model Min. Max. MCA2-12HRDN1-Q 220-240V 198V 254V MCA2-18HRDN1-Q 220-240V 198V 254V Remark: MFA: Max. Fuse Amps. (A) 7. Sound Levels 1.4m Microphone Noise level dB(A) Model MCA2-12HRDN1-Q MCA2-18HRDN1-Q New Four-way Cassette (Compact)

  • Page 18: Accessories

    Accessories MLCAC-UTSM-2010-10 8. Accessories Name Shape Quantity 1. Drain joint (Be provided in outdoor unit.) 2. Remote controller 3. Remote controller holder 4. Mounting screw(ST2.9×10-C-H) 5. Alkaline dry batteries (AM4) 6. Owner's manual 7. Installation manual 9. The Specification of Power New Four-way Cassette (Compact)

  • Page 19: Field Wiring

    MLCAC-UTSM-2010-10 Field Wiring 10. Field Wiring -12HRDN1-Q MCA2 MCA2-18HRDN1-Q New Four-way Cassette (Compact)
  • Page 20 Field Wiring MLCAC-UTSM-2010-10 MCA2-12HRDN1-Q MCA2-18HRDN1-Q New Four-way Cassette (Compact)
  • Page 21 MLCAC-UTSM-2010-10 Four-way Cassette Type Four-way Cassette Type 1. Features ....................18 2. Dimensions ................... 21 3. Service Space..................22 4. Wiring Diagrams ................... 23 5. Air Velocity and Temperature Distributions(Reference Data) ..24 6. Electric Characteristics ................ 25 7. Sound Levels ..................25 8.

  • Page 22: Features

    Features MLCAC-UTSM-2010-10 1. Features (1) Low operation noise —Streamline plate ensures quietness —Creates natural and comfortable environment (2) Efficient cooling——Equal, fast and wide range cooling (3) Excellent performance. The optimal evaporator & sufficient airflow volume guarantees the excellent capacity (4) The adoption of the most advanced 3- Dimensional Screw fan —Reduces the air resistance passing through —Smoothes the air flow —Makes air speed distribution to the heat exchange uniform...
  • Page 23 MLCAC-UTSM-2010-10 Features (8) Different color panels for choose: White、Gray、Blue、Black (9) Swing angle of louver Add one more swing motor, one motor driving two louvers. Controlling the interspace of each part, minimizing the angle loss. The swing angle of the first louver are 40~42 degrees and the second louver are 37~38 degrees. New evaporator and inner configuration designed can acquire high heat-exchanger effect.
  • Page 24 Features MLCAC-UTSM-2010-10 (15) Reserve spaces for air side-outlet, it is available to connect duct pipe hence air supplying from the four sides to nearby small room.. (16) The connecting pipe and drop height is higher. Max. pipe length up to 50m （refer to ①） , and Max. drop height up to 30m（refer to ②）.

  • Page 25: Dimensions

    MLCAC-UTSM-2010-10 Dimensions 2. Dimensions Unit: mm MODEL(Btu/h) 18000 Ф12.7 Ф6.35 >260 24000 Ф15.9 Ф9.52 >260 30000 Ф15.9 Ф9.52 >330 36000 Ф15.9 Ф9.52 >330 48000 Ф15.9 Ф9.52 >330 60000 Ф15.9 Ф9.52 >330 Four-way Cassette Type...

  • Page 26: Service Space

    Service Space MLCAC-UTSM-2010-10 3. Service Space For 18-48k For 60k Four-way Cassette Type...

  • Page 27: Wiring Diagrams

    MLCAC-UTSM-2010-10 Wiring Diagrams 4. Wiring Diagrams MCC-18HRDN1、MCC-24HRDN1 MCC-30HRDN1、MCC-36HRDN1、MCC-48HRDN1、MCC-60HRDN1 Four-way Cassette Type...

  • Page 28: Air Velocity And Temperature Distributions(Reference Data)

    Air Velocity and Temperature Distributions(Reference Data) MLCAC-UTSM-2010-10 5. Air Velocity and Temperature Distributions(Reference Data) Airflow velocity Condenser Evaporator Electronic Condenser temp. sensor expansion valve Evaporator temp. sensor High pressure switch Filter Filter Capillary Room temp. sensor Discharge temp. sensor Oil separator Ambient temp.

  • Page 29: Electric Characteristics

    MLCAC-UTSM-2010-10 Electric Characteristics 6. Electric Characteristics Power Indoor Unit Supply Model Voltage MCC-18HRDN1 220-240 MCC-24HRDN1 220-240 MCC-30HRDN1 220-240 MCC-36HRDN1 220-240 MCC-48HRDN1 220-240 MCC-60HRDN1 220-240 MCC-60HRDN1 220-240 Remark: MFA: Max. Fuse Amps. (A) 7. Sound Levels Noise level dB(A) Model MCC-18HRDN1 MCC-24HRDN1 MCC-30HRDN1 MCC-36HRDN1...

  • Page 30: Accessories

    Accessories MLCAC-UTSM-2010-10 8. Accessories Name Shape Quantity INSTALLATION FITTINGS Installation paper board Soundproof / insulation sheath Tubing & Fittings Connecting pipe group Out-let pipe sheath Out-let pipe clasp Drainpipe Fittings Drain joint Seal ring Remote controller & Its Frame Remote controller & Its Remote controller holder Frame Mounting screw(ST2.9×10-C-H)
  • Page 31 MLCAC-UTSM-2010-10 Accessories MCC-60HRDN1 Name Shape Quantity 1. Expansible hook 2. Installation hook Installation Fittings 3. Installation paper board 4. Bolt M6 Tubing ＆ Fittings 5. Soundproof / insulation sheath 6. Out-let pipe 7. Out-let pipe sheath Drainpipe Fittings 8. Out-let pipe clasp 9.

  • Page 32: The Specification Of Power

    The Specification of Power MLCAC-UTSM-2010-10 9. The Specification of Power Four-way Cassette Type...

  • Page 33: Field Wiring

    MLCAC-UTSM-2010-10 Field Wiring 10. Field Wiring Wiring chart Four-way Cassette Type...
  • Page 34 Field Wiring MLCAC-UTSM-2010-10 Four-way Cassette Type...
  • Page 35 MLCAC-UTSM-2010-10 Duct Type Duct Type 1. Features ....................32 2. Dimensions ................... 33 3. Service Space..................34 4. Wiring Diagrams ................... 35 5. Static Pressure ..................36 6. Electric Characteristics ................ 38 7. Sound Levels ..................39 8. Accessories ................... 40 9.

  • Page 36: Features

    Features MLCAC-UTSM-2010-10 1. Features ● New structure design. ● Built-in drainage pump (Optical). ● Two air intake ways: from below or rear (standard). ● Wire controller is standard. ● Three speeds indoor unit. ● Fresh air inlet hole is reserved. Duct Type...

  • Page 37: Dimensions

    MLCAC-UTSM-2010-10 Dimensions 2. Dimensions Outline Air outlet o Air return Size of outline dimension mounted Capacity dimension(mm) pening size opening size plug (KBtu) 12/18 30/36 1140 1035 1180 48/60 1200 1094 1240 Duct Type...

  • Page 38: Service Space

    Service Space MLCAC-UTSM-2010-10 3. Service Space Ensure enough space required for installation and maintenance. All the indoor units reserve the hole to joint the fresh air pipe. The hole size as following: Duct Type...

  • Page 39: Wiring Diagrams

    MLCAC-UTSM-2010-10 Wiring Diagrams 4. Wiring Diagrams MTB-12HWDN1 MTB-18HWDN1 MTB1-24HWDN1 MTB-30HWDN1 MTB-36HWDN1 MTB-48HWDN1 MTB-60HWDN1 TO WIRE DISPLAY BOARD 202 07 03903 85 CONTROLLER C ODE T ITLE FAN MOTO R PU MP M OTOR CN1 0 CN 11 WAT ER L EVEL SWI TCH H /P2 HIG H FA N CH /P3...

  • Page 40: Static Pressure

    Static Pressure MLCAC-UTSM-2010-10 5. Static Pressure MTB-12HWDN1 MTB-18HWDN1 Super high speed High speed Super high speed M id speed High speed Mid speed Low speed Low speed 200 300 400 500 1000 1100 1200 Air volume(m /h) Air volum e(m /h) MTB1-24HWDN1 MTB-30HWDN1 S up er high speed...
  • Page 41 MLCAC-UTSM-2010-10 Static Pressure MTB-36HWDN1 MTB-48HWDN1 Super high speed Super high speed High speed High speed Mid speed Mid speed Low speed Low speed 1200 1400 1600 1800 2000 2200 1100 2400 Air volume(m /h) 1000 1300 1600 1900 2200 2500 2800 3100 Air volume(m /h)

  • Page 42: Electric Characteristics

    Electric Characteristics MLCAC-UTSM-2010-10 6. Electric Characteristics Indoor Unit Power Supply Model Voltage Min. Max. MTB-12HWDN1 220-240 MTB-18HWDN1 220-240 MTB1-24HWDN1 220-240 MTB-30HWDN1 220-240 MTB-36HWDN1 220-240 MTB-48HWDN1 220-240 MTB-60HWDN1 220-240 Remark: MFA: Max. Fuse Amps. (A) Duct Type...

  • Page 43: Sound Levels

    MLCAC-UTSM-2010-10 Sound Levels 7. Sound Levels Concealed Duct Type Discharge Suction Duct Duct 1.4m Microphone Noise level dB(A) Model MTB-12HWDN1 MTB-18HWDN1 MTB1-24HWDN1 MTB-30HWDN1 MTB-36HWDN1 MTB-48HWDN1 MTB-60HWDN1 Duct Type...

  • Page 44: Accessories

    Accessories MLCAC-UTSM-2010-10 8. Accessories Name Shape Quantity Soundproof / insulation sheath Tubing & Fittings Binding tape Seal sponge Drain joint Drainpipe Fittings (for cooling & heating) Seal ring Remote controller Frame Remote controller ＆ Its Frame Mounting screw(ST2.9 10-C-H) Alkaline dry batteries (AM4) Remote controller manual Wired controller &...

  • Page 45: The Specification Of Power

    MLCAC-UTSM-2010-10 The Specification of Power 9. The Specification of Power Duct Type...

  • Page 46: Field Wiring

    Field Wiring MLCAC-UTSM-2010-10 10. Field Wiring Duct Type...
  • Page 47 MLCAC-UTSM-2010-10 Field Wiring Air-conditioner link-circuit. Duct Type...
  • Page 48 Field Wiring MLCAC-UTSM-2010-10 Duct Type...
  • Page 49 MLCAC-UTSM-2010-10 Ceiling & Floor Type Ceiling & Floor Type 1. Features ....................46 2. Dimensions ................... 47 3. Service Space..................49 4. Wiring Diagrams ................... 50 5. Air Velocity and Temperature Distributions(Reference Data) ..52 6. Electric Characteristics ................ 54 7.

  • Page 50: Features

    Features MLCAC-UTSM-2010-10 1. Features 1.1. New design, more modern and elegant appearance. 1.2. Convenient installation --The ceiling type can be easily installed into a corner of the ceiling even if the ceiling is very narrow --It is especially useful when installation of an air conditioner in the center of the ceiling is impossible due to a structure such as one lighting.

  • Page 51: Dimensions

    MLCAC-UTSM-2010-10 Dimensions 2. Dimensions a. Wall mounting installation b. Ceiling installation Ceiling & Floor Type...
  • Page 52 Dimensions MLCAC-UTSM-2010-10 Capacity(Btu/h) 12000-24000Btu/h 30000-36000Btu/h 1280 1195 48000-60000Btu/h 1670 1070 1542 Ceiling & Floor Type...

  • Page 53: Service Space

    MLCAC-UTSM-2010-10 Service Space 3. Service Space Ceiling & Floor Type...

  • Page 54: Wiring Diagrams

    Wiring Diagrams MLCAC-UTSM-2010-10 4. Wiring Diagrams MUB-12HRDN1 Ceiling & Floor Type...
  • Page 55 MLCAC-UTSM-2010-10 Wiring Diagrams MUB-18HRDN1、MUB-24HRDN1 MUB-30HRDN1、MUB-36HRDN1、MUB-48HRDN1、MUB-60HRDN1 Ceiling & Floor Type...

  • Page 56: Air Velocity And Temperature Distributions(Reference Data)

    Air Velocity and Temperature Distributions(Reference Data) MLCAC-UTSM-2010-10 5. Air Velocity and Temperature Distributions(Reference Data) Discharge angle 60° (CEILING) Airflow velocity Condenser Evaporator Electronic Condenser temp. sensor expansion valve Evaporator temp. sensor High pressure switch Filter Filter Capillary Room temp. sensor Discharge temp.
  • Page 57 MLCAC-UTSM-2010-10 Air Velocity and Temperature Distributions(Reference Data) Discharge angle 60°(FLOOR) Airflow velocity Temperature Ceiling & Floor Type...

  • Page 58: Electric Characteristics

    Electric Characteristics MLCAC-UTSM-2010-10 6. Electric Characteristics Indoor Unit Power Supply Model Voltage MUB-12HRDN1 220~240 MUB-18HRDN1 220~240 MUB-24HRDN1 220~240 MUB-30HRDN1 220~240 MUB-36HRDN1 220~240 MUB-48HRDN1 220~240 MUB-60HRDN1 220~240 Remark: MFA: Max. Fuse Amps. (A) Ceiling & Floor Type...

  • Page 59: Sound Levels

    MLCAC-UTSM-2010-10 Sound Levels 7. Sound Levels Ceiling Floor Noise level dB(A) Model MUB-12HRDN1 MUB-18HRDN1 MUB-24HRDN1 MUB-30HRDN1 MUB-36HRDN1 MUB-48HRDN1 MUB-60HRDN1 Ceiling & Floor Type...

  • Page 60: Accessories

    Accessories MLCAC-UTSM-2010-10 8. Accessories Name Shape Quantity 1.Hook Installation fittings 2.Hanging arm 3. Remote controller Remote controller & Its 4. Remote controller holder holder 5. Mounting screw (ST2.9×10-C-H) 6. Alkaline dry batteries (AM4) 7. Owner's manual Others 8. Installation manual 9.

  • Page 61: The Specification Of Power

    MLCAC-UTSM-2010-10 The Specification of Power 9. The Specification of Power 36000-60000 30000-60000 Model 12000Btu/h 18000-30000Btu/h Btu/h Btu/h Phase 1-phase 1-phase 1-phase 1-phase Frequency and 220-240V, 50Hz 220-240V, 50Hz 220-240V, 50Hz 220-240V, 50Hz Voltage INDOOR UNIT POWER WIRING POWER 3×1.5 3×1.0 3×1.0 3×1.0 CIRCUIT BREAKER...

  • Page 62: Field Wiring

    Field Wiring MLCAC-UTSM-2010-10 10. Field Wiring Ceiling & Floor Type...
  • Page 63 MLCAC-UTSM-2010-10 Field Wiring For model 12 Ceiling & Floor Type...
  • Page 64 Field Wiring MLCAC-UTSM-2010-10 For model 18~60 Ceiling & Floor Type...
  • Page 65 MLCAC-UTSM-2010-10 Console Type Console Type 1. Features ....................63 2. Dimensions ................... 64 3. Service Space..................65 4. Wiring Diagrams ................... 66 5. Air Velocity and Temperature Distributions(Reference Data) ..67 6. Electric Characteristics ................ 68 7. Sound Levels ..................69 8.

  • Page 67: Features

    MLCAC-UTSM-2010-10 Features 1. Features 1.1. Consumes up to 30% less energy than non-inverter units ——DC inverter compressor ——indoor fan motor adopts DC motor 1.2. Achieves set temperature more quickly ——air supplying from top and bottom or from top only ——air inlet from four directions 1.3.

  • Page 68: Dimensions

    Dimensions MLCAC-UTSM-2010-10 2. Dimensions MFA-12HRDN1/ MFA-18HRDN1 Console Type...

  • Page 69: Service Space

    MLCAC-UTSM-2010-10 Service Space 3. Service Space Console Type...

  • Page 70: Wiring Diagrams

    Wiring Diagrams MLCAC-UTSM-2010-10 4. Wiring Diagrams MFA-12HRDN1 MFA-18HRDN1 FUNCTION OF SWITCHES TO WIRE CONTROLLER SWITCH BOARD SWITCH BOARD DIS PLAY BOARD WIRING DIAGRAM INDOOR UNIT CN10 CN1 5 CODE PART NAME TEMP.COMPEN S A TIO N C N1-20 P.C BOARD SOCKETS SW102 TEM P.

  • Page 71: Air Velocity And Temperature Distributions(Reference Data)

    MLCAC-UTSM-2010-10 Air Velocity and Temperature Distributions(Reference Data) 5. Air Velocity and Temperature Distributions(Reference Data) Discharge angle 60 Airflow velocity Temperature Console Type...

  • Page 72: Electric Characteristics

    Electric Characteristics MLCAC-UTSM-2010-10 6. Electric Characteristics Indoor Unit Power Supply Model Voltage MFA-12HRDN1 220~240V 198V 254V MFA-18HRDN1 220~240V 198V 254V Remark: MFA: Max. Fuse Amps. (A) Console Type...

  • Page 73: Sound Levels

    MLCAC-UTSM-2010-10 Sound Levels 7. Sound Levels Microphone 1.5m Noise level dB(A) Model Highest Higher MFA-12HRDN1 MFA-18HRDN1 Console Type...

  • Page 74: Accessories

    Accessories MLCAC-UTSM-2010-10 8. Accessories MFA-12HRDN1/ MFA-18HRDN1 Name Shape Quantity Installation fittings Hook Remote controller Frame Remote controller & Its Frame Mounting screw(ST2.9×10-C-H) Alkaline dry batteries (AM4) Installation manual Others Owner's manual Console Type...

  • Page 75: The Specification Of Power

    MLCAC-UTSM-2010-10 The Specification of Power 9. The Specification of Power Console Type...

  • Page 76: Field Wiring

    Field Wiring MLCAC-UTSM-2010-10 10. Field Wiring Console Type...
  • Page 77 MLCAC-UTSM-2010-10 Field Wiring Console Type...
  • Page 78 Outdoor Units MLCAC-UTSM-2010-10 Part 3 Outdoor Units 1. Dimensions ................... 75 2. Service Space..................77 3. Piping Diagrams ................... 78 4. Wiring Diagrams ................... 79 5. Electric Characteristics ................ 84 6. Operation Limits ................... 85 7. Sound Levels ..................86 8.

  • Page 79: Dimensions

    MLCAC-UTSM-2010-10 Dimensions 1. Dimensions Unit: mm MODEL MOU-12HDN1 MOUA-18HDN1-C0 MOUB-24HDN1 MOU-30HDN1 MOUB-36HDN1-R Outdoor Units...
  • Page 80 Dimensions MLCAC-UTSM-2010-10 Unit：mm Model MOUB-36HDN1-Q MOU-48HDN1 MOUB-48HDN1-R 1245 MOUA-60HRDN1 MOUD-60HDN1-R Outdoor Units...

  • Page 81: Service Space

    MLCAC-UTSM-2010-10 Service Space 2. Service Space Outdoor Units...

  • Page 82: Piping Diagrams

    Piping Diagrams MLCAC-UTSM-2010-10 3. Piping Diagrams MOU-12HDN1 Capillary ass'y Condenser Evaporator 4-way valve Compressor Outdoor unit Indoor unit MOUA-18HDN1-C0、MOUB-24HDN1 Condenser Electronic expansion valve Condenser temp. sensor Filter Capillary Filter Evaporator Ambient temp. sensor High pressure switch 4-way valve Discharge temp. sensor...

  • Page 83: Wiring Diagrams

    MLCAC-UTSM-2010-10 Wiring Diagrams 4. Wiring Diagrams MOU-12HDN1 Outdoor Units...
  • Page 84 Wiring Diagrams MLCAC-UTSM-2010-10 MOUA-18HDN1-C0 MOUB-24HDN1 Outdoor Units...
  • Page 85 MLCAC-UTSM-2010-10 Wiring Diagrams MOU-30HDN1 MOUB-36HDN1-Q、MOU-48HDN1 Outdoor Units...
  • Page 86 Wiring Diagrams MLCAC-UTSM-2010-10 MOUB-36HDN1-R MOUB-48HDN1-R、MOUD-60HDN1-R Outdoor Units...
  • Page 87 MLCAC-UTSM-2010-10 Wiring Diagrams MOUA-60HRDN1 Outdoor Units...

  • Page 88: Electric Characteristics

    Electric Characteristics MLCAC-UTSM-2010-10 5. Electric Characteristics Outdoor Unit Power Supply Model Voltage Min. Max. MOU-12HDN1 220-240 MOUA-18HDN1-C0 220-240 MOUB-24HDN1 220-240 MOU-30HDN1 220-240 MOUB-36HDN1-Q 220-240 MOU-48HDN1 220-240 MOUB-36HDN1-R 380-415 MOUB-48HDN1-R 380-415 MOUA-60HRDN1 380-415 MOUD-60HDN1-R 380-415 Remark: MFA: Max. Fuse Amps. (A)

  • Page 89: Operation Limits

    MLCAC-UTSM-2010-10 Operation Limits 6. Operation Limits Temperature Cooling operation Heating operation Mode Room temperature ≤30℃ ≥17℃ 0℃～50℃ （-15℃～50℃：For Outdoor temperature -15℃～24℃ the models with low temperature cooling system） CAUTION: 1. If the air conditioner is used beyond the above conditions, certain safety protection features may come into operation and cause the unit to operate abnormally.

  • Page 90: Sound Levels

    Sound Levels MLCAC-UTSM-2010-10 7. Sound Levels Outdoor Unit Microphone 1.0m Note: H= 0.5 × height of outdoor unit Noise level dB(A) Model MOU-12HDN1 48/44 MOUA-18HDN1-C0 51/46 MOUB-24HDN1 53/48 MOU-30HDN1 57/50 MOUB-36HDN1-Q 57/52 MOUB-36HDN1-R 55/50 MOU-48HDN1 59/54 MOUB-48HDN1-R 59/54 MOUA-60HRDN1 59/54...

  • Page 91: Point Check Function

    There is a check switch in outdoor PCB. Push the switch SW1 to check the states of unit when the unit is running. The digital display tube will display the follow procedure when push SW1 each time. For units except model MOU-12HDN1: Display Remark...

  • Page 92: Troubleshooting

    Troubleshooting MLCAC-UTSM-2010-10 9. Troubleshooting 10.1 Indoor unit malfunction 10.1.1 Display board Compact 4-way cassette Console Ceiling & Floor Normal 4-way cassette Duct PRE-DEF indicator(cooling and heating type) or fan only indicator(cooling only type) Alarm indicator Timer indicator Infrared signal receiver Operation lamp Display digital tube Temporary button...
  • Page 93 MLCAC-UTSM-2010-10 Troubleshooting 10.1.2 Troubleshooting For compact 4-way cassette(12K) Malfunction Running lamp Timer lamp Defrosting lamp Alarm lamp Communication malfunction between indoor and ☆ outdoor units. Open or short circuit of T1 temperature sensor ☆ Open or short circuit of T2 temperature sensor ☆...
  • Page 94 Troubleshooting MLCAC-UTSM-2010-10 For console type(12K) Malfunction Running lamp Timer lamp Defrosting lamp Communication malfunction between indoor and outdoor ☆ units. Open or short circuit of T1 temperature sensor ☆ Open or short circuit of T2 temperature sensor ☆ Indoor EEPROM malfunction ☆...
  • Page 95 MLCAC-UTSM-2010-10 Troubleshooting 10.2 Outdoor unit malfunction LED6 LED5 Indoor Display Malfunction or Protection (Green) (Red) ☆ IGBT over-strong current protection Voltage protection of compressor Indoor / outdoor units communication error ☆ ☆ O(light) X(off) ☆(flash at 2.5Hz) 18~60k Display Malfunction or Protection EEPROM malfunction Communication malfunction between indoor IC and outdoor IC Communication malfunction in outdoor IC and DSP...
  • Page 96 Troubleshooting MLCAC-UTSM-2010-10 10.3 Solving steps for typical malfunction 10.3.1 For the indoor unit 10.3.1.1 Open or short circuit of temperature sensor Check the connections between temperature Correct the connections. sensor and PCB. Are the connections good? Check the resistance value of the sensor via Appendix 1 Is it normal? Replace indoor or outdoor PCB.
  • Page 97 MLCAC-UTSM-2010-10 Troubleshooting 10.3.1.2. Outdoor unit malfunction 10.3.1.3. Indoor EEPROM malfunction Shut off the power supply and turn it on 5 seconds later. Is it still displaying the error code? If the EEPROM chip is welded on PCB, replace the PCB directly.
  • Page 98 Troubleshooting MLCAC-UTSM-2010-10 10.3.1.4. Full-water malfunction If the water-level switch Insert the water-level switch well is inserted well? If the water-level switch Replace the water-level switch is broken? If the water pump is Replace the water pump normal? Check PCB board or replace the indoor main PCB Outdoor Units...
  • Page 99 MLCAC-UTSM-2010-10 Troubleshooting 10.3.1.5. Indoor fan Speed has been out of control.(Only for console 12k) Shut off the power supply and turn it on 1 minute later. Is it The unit operates normally. still displaying the error code? Shut off the power supply, Replace indoor fan rotate the fan by hand.
  • Page 100 Troubleshooting MLCAC-UTSM-2010-10 10.3.2 For the outdoor unit 10.3.2.1 IGBT over-strong current protection(Only for 12k) 10.3.2.2. E0 malfunction E0 display Outdoor EEPROM malfunction If the EEPROM chip is welded on PCB, replace the PCB Insert the EEPROM well directly. Otherwise, check whether the EEPROM chip plugged in PCB well? Replace the outdoor main board...
  • Page 101 MLCAC-UTSM-2010-10 Troubleshooting 10.3.2.3 . E2 malfunction(Only for 12k) E2 display Indoor / outdoor units communication error Power off, then turn on the unit 5 seconds later(reconnect the power wire).Is the error still displaying after several minutes? Check all the wirings between indoor and outdoor, indoor PCB and outdoor PCB following the wiring diagram.
  • Page 102 Troubleshooting MLCAC-UTSM-2010-10 10.3.2.4 . E2 malfunction(For 18-60k) E2 display Indoor / outdoor units communication error Power off, then turn on the unit 5 seconds later(reconnect the power wire).Is the error still displaying after several minutes? Check whether there’s any interference. Remove interference.
  • Page 103 MLCAC-UTSM-2010-10 Troubleshooting 10.3.2.5. E3 malfunction E3 display Communication malfunction between IPM board and outdoor main board Is there at least one LED in the IPM board light? Check the signal wire between the IPM module and the main board, is it connected good? Reconnect and retry.
  • Page 104 Troubleshooting MLCAC-UTSM-2010-10 10.3.2.6. E4 malfunction E4 display Judge 1: Outdoor condenser temp. sensor (T3) is malfunction Check whether the wiring of the condenser temp. sensor(T3) is Connect the wiring well broken off Check whether the resistance of condenser temp. sensorT3) is Replace condenser temp.
  • Page 105 MLCAC-UTSM-2010-10 Troubleshooting 10.3.2.7. E5 malfunction(For single phase units) E5 display Voltage protection Check the voltage of outdoor unit power supply, whether the voltage Check the power supply between L(1) and N is about 220~240VAC Replace the power board, then check whether the system can run normally Check whether the voltage of IPM board P and N is...
  • Page 106 Troubleshooting MLCAC-UTSM-2010-10 10.3.2.8. E5 malfunction(For three phases units) E5 display Voltage protection Check the voltage of outdoor unit power supply, whether the voltage between L(1) Check the power supply ,L(2),L(3)and N is about 220VAC and between L(1) ,L(2),L(3) is about 380VAC Replace the power board, then check whether the system can run normally...
  • Page 107 MLCAC-UTSM-2010-10 Troubleshooting 10.3.2.9. E6 malfunction (Only for 36K, 48K with 1 phase) E6 display PFC module protection Check whether the connecting line between Connect it tightly, check main board and the PFC normal or not module is connected tightly Check whether the voltage range of P-N on IPM Replace the outdoor main board module is normal?
  • Page 108 Troubleshooting MLCAC-UTSM-2010-10 10.3.2.10. P0 malfunction Outdoor Units...
  • Page 109 MLCAC-UTSM-2010-10 Troubleshooting 10.3.2.11. P1 malfunction (Only for 30K~60K) Outdoor Units...
  • Page 110 Troubleshooting MLCAC-UTSM-2010-10 10.3.2.12. P2 malfunction (Only for 30K~60K) Outdoor Units...
  • Page 111 MLCAC-UTSM-2010-10 Troubleshooting 10.3.2.13. P3 malfunction Outdoor Units...
  • Page 112 Troubleshooting MLCAC-UTSM-2010-10 10.3.2.14. P4 malfunction When compressor discharge temperature is higher than 115°C, the unit will stop, and unit runs again when compressor discharge temperature is lower than 90°C. P4 display Temperature protection of compressor discharge Check whether the Check whether the compressor discharge temp.
  • Page 113 MLCAC-UTSM-2010-10 Troubleshooting 10.3.2.15. P5 malfunction When condenser high temp. is more than 65°C, the unit will stop, and unit runs again when outdoor pipe temp. less than 52°C. P5 display High temperature protection of condenser Replace the temperature sensor Check whether the condenser temperature is more than 65°C Check whether the...
  • Page 114 Troubleshooting MLCAC-UTSM-2010-10 10.3.2.16. P6 malfunction (For single phase units) P6 display IPM module protection Check whether the voltage Check whether the Regulate it to correct, range of P-N on IPM module is input power supply is then check whether the normal? DC277-356V for 18K/ correct? 220-240V, 1N, system can work...
  • Page 115 MLCAC-UTSM-2010-10 Troubleshooting 10.3.2.17. P6 malfunction (For three phases units) P6 display IPM module protection Check whether the Regulate it to correct, Check whether the voltage input power supply is then check whether the range of P-N on IPM module is correct? 380-415V, 3N, system can work normal? DC 350-650V...
  • Page 116 Troubleshooting MLCAC-UTSM-2010-10 10.3.2.18. P7 malfunction P7 display High temperature protection of evaporator Whether the Whether compressor Reconnect and retest connection is operates? good? Check the Check whether the heat resistance value of exchanger is dirty, the air- the sensor via outlet is blocked and the Replace the temperature sensor Appendix 1,Is it...
  • Page 117 MLCAC-UTSM-2010-10 Troubleshooting Appendix 1 Temperature 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 2.03732 0.56038 84.2190...
  • Page 118 Troubleshooting MLCAC-UTSM-2010-10 Appendix 2 Unit: ℃---K Discharge temp. sensor table 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 57.37 11.79 3.296 406.7 54.89 11.38 3.203 384.3 52.53 10.99 3.113 363.3 50.28 10.61 3.025 343.6 48.14...
  • Page 119 MLCAC-UTSM-2010-10 Installation Part 4 Installation 1.Precaution on Installation ..............116 2.Vacuum Dry and Leakage Checking ..........117 3.Additional Refrigerant Charge ............119 4.Water Drainage ..................120 5.Insulation Work ..................123 6.Wiring ....................124 7.Test Operation ..................125 Installation...

  • Page 120: Precaution On Installation

    Precaution on Installation MLCAC-UTSM-2010-10 1. Precaution on Installation 1). Measure the necessary length of the connecting pipe, and make it by the following way. Connect the indoor unit at first, then the outdoor unit. Bend the tubing in proper way. Do not harm them. Specially Notice the pipe length/height/dimension of each capacity.

  • Page 121: Vacuum Dry And Leakage Checking

    MLCAC-UTSM-2010-10 Vacuum Dry and Leakage Checking 2. Vacuum Dry and Leakage Checking Vacuum Dry: use vacuum pump to change the moisture (liquid) into steam (gas) in the pipe and discharge it out of the pipe to make the pipe dry. Under one atmospheric pressure, the boiling point of water(steam temperature) is 100 . Use vacuum pump to make the ℃...
  • Page 122 Vacuum Dry and Leakage Checking MLCAC-UTSM-2010-10 ②. Special vacuum dry procedure  This vacuum dry method is used in the following conditions:  There’s moisture when flushing the refrigerant pipe.  Rainwater may enter into the pipe. Vacuum dry for the first time ······ 2h pumping ...

  • Page 123: Additional Refrigerant Charge

    MLCAC-UTSM-2010-10 Additional Refrigerant Charge 3. Additional Refrigerant Charge Caution a) Refrigerant cannot be charged until field wiring has been completed. b) 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 124: Water Drainage

    Water Drainage MLCAC-UTSM-2010-10 4. Water Drainage 4.1 Gradient and Supporting 1). Keep the drainpipe sloping downwards at a gradient of at least 1/50. Keep the drainpipe as short as possible and eliminate the air bubble. 2). The horizontal drainpipe should be short. When the pipe is too long, a prop stand must be installed to keep the gradient of 1/50 and prevent bending.
  • Page 125 MLCAC-UTSM-2010-10 Water Drainage For Four-way cassette 4.4 Convergent drainage 1). The number of indoor units should be as small as possible to prevent the traverse main pipe overlong. 2). Indoor unit with drain pump and indoor unit without drain pump should be in different drainage system. 3).
  • Page 126 Water Drainage MLCAC-UTSM-2010-10 Stop the air condi tioner running, turn off the power, and put back the cover. ③  Stop the air conditioner. After 3 minutes, check if it has abnormity. If the collocation of drainpipes is illogical, the water will flow back overfull, which will cause the alarm lamp flashes, even overflow from the water receipt plate.

  • Page 127: Insulation Work

    MLCAC-UTSM-2010-10 Insulation Work 5. Insulation Work 5.1 Insulation material and thickness 1). Insulation material Insulation material should adopt the material which is able to endure the pipe’s temperature: no less than 70 in the high -pressure side, no ℃ less than 120 ℃...

  • Page 128: Wiring

    Wiring MLCAC-UTSM-2010-10 For construction convenience, before laying pipes, use insulation material to insulate the pipes to be deal with, at the same time, at two ends of the pipe, remain some length not to be insulated, in order to be welded and check the leakage after laying the pipes. 3).

  • Page 129: Test Operation

    MLCAC-UTSM-2010-10 Insulation Work 7. Test Operation (1) The test operation must be carried out after the entire installation has been completed. (2) Please confirm the following points before the test operation.  The indoor unit and outdoor unit are installed properly. ...
  • Page 130 Control MLCAC-UTSM-2010-06 Part 5 Control 1. Wireless Remote Controller .............. 127 Control...
  • Page 131 MLCAC-UTSM-2010-10 Wireless Remote Controller 1. Wireless Remote Controller 1.1 R05/BGE The R05/BGE wireless remote controller is for Four-way cassette type and the Ceiling& floor type. AUTO TE MP C O O L Mo de s etting Fan s peed se tti n g H E AT F AN Adj us t...
  • Page 132 Wireless Remote Controller MLCAC-UTSM-2010-10 Buttons and functions 1. MODE : Once pressing, running mode will be selected in the following sequence: AUTO COOL HEAT FAN NOTE: No heating mode for cool only type unit. 2. FAN SPEED: Fan speed will be selected in following sequence once pressing this button: AUTO LOW HIGH 3.
  • Page 133 MLCAC-UTSM-2010-10 Wireless Remote Controller 1.1 RG51Q1/BGE General Function for wireless remote controller: Model RG51Q1/BGE Rated voltage 3.0V(2pieces of LR03 7＃ batteries) Min voltage for sending signal of CPU 2.4V Effective receiving distance 8m~11m Operation condition -5~60℃ Control...
  • Page 134 Wireless Remote Controller MLCAC-UTSM-2010-10 Buttons and functions 1. Adjust : Decrease the set temp. Keeping pressing will decrease the temp with 1℃ per 0.5s. 2. Adjust : Increase the set temp. Keeping pressing will increase the temp with 1℃ per 0.5s. 3.
  • Page 135 MLCAC-UTSM-2010-10 Wireless Remote Controller 1.3 KJR-10B NAME AND FUNCTION OF LCD ON THE WIRE CONTROLLER Mode select button (MODE): Press MODE button to select “COOL”, “DRY” , "HEAT", or "FAN ONLY" mode.(HEAT is invalid for COOL ONLY wire controller.) AUTO→ COOLING →DEHUMIDIFY →HEATING→ FAN Fan speed button (FAN SPEED) Press FAN SPEED to select fan speed from "AUTO", "LOW","...
  • Page 136 Wireless Remote Controller MLCAC-UTSM-2010-10 Lock display Press LOCK to display the icon of LOCK. Press the button again then the icon of LOCK disappears. In the mode of LOCK, all the buttons are invalid except for LOCK button. CLOCK display. Usually display the clock set currently.
  • Page 137 MLCAC-UTSM-2010-10 Wireless Remote Controller Timer off button: Push the button to set TIMER OFF, each time you push the button the time moves forward by o.5 hours. When the set time is over 10 hours, each time you push the button the time moves forward by 1 hour. If want to cancel the TIMER OFF, then adjust the time of TIMER OFF as 0.0 CLOCK button: Normally display the clock set currently (display 12:00 for the first electrifying or resetting).
  • Page 138 Wireless Remote Controller MLCAC-UTSM-2010-10 Installation Installation Notice: When the air conditioner needs the constant frequency wire Controller, be sure adding a Wire Joint with 5 terminal named A, B, C, D, E in indoor unit, and fixing a infrared emitter whose anode and cathode connecting with A and B near the receiver in the Indoor Unit Switch Board, then connecting the terminal +5v, GND, Run in the Switch Board to C,D,E respectively.

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