Midea MDV-V180W/DRN1 Technical & Service Manual
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Midea MDV-V180W/DRN1 Technical & Service Manual

Mini vrf 3 phase, 380-415v, 50hz
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Technical Service Manual
Mini VRF
Model:
3 phase, 380-415V, 50Hz
MDV-V120W/DRN1
MDV-V140W/DRN1
MDV-V160W/DRN1
MDV-V180W/DRN1

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Summary of Contents for Midea MDV-V180W/DRN1

  • Page 1 Technical Service Manual Mini VRF Model: 3 phase, 380-415V, 50Hz MDV-V120W/DRN1 MDV-V140W/DRN1 MDV-V160W/DRN1 MDV-V180W/DRN1...

  • Page 2: Table Of Contents

    MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF Contents Part 1 General Information ................. 1 Part 2 Specifications & Performance ............... 10 Part 3 Installation ....................54 Part 4 Troubleshooting ..................70...

  • Page 3: Mcac-Vtsm

    R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10...

  • Page 4: Table Of Contents

    MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF Part 1 General Information 1. Product Lineup ..................2 2. Nomenclature ..................3 3. Features....................4 4. Indoor Units Lineup ................8 General Information...

  • Page 5: Product Lineup

    R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 1. Product Lineup Outdoor Units Model name Dimension body(mm) Net/Gross weight (kg) Power supply Width: 900 MDV-V120W/DRN1 Height: 1327 95/106 380-415V-3ph~ 50Hz Depth:400 Width: 900 MDV-V140W/DRN1 Height: 1327 95/106 380-415V-3ph~ 50Hz Depth:400 Width: 900...

  • Page 6: Nomenclature

    MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 2. Nomenclature MDV-V120W/DRN1 Refrigerant N1: R410A Power Supply 220~240V, 50Hz, 1ph 380~415V, 50Hz, 3ph DC Inverter Outdoor unit Cooling Capacity ( × 100W ) Inverter Midea VRF General Information...

  • Page 7: Features

    9 zones with one outdoor unit. Such as villa, restaurant, school etc. Midea offers various indoor units, more than 100 models of 15 types. Capacity ranges are from 1.5kW to 16 kW. It is all compliance with residential and light commercial place. Our systems can be operated up to 130% of capacity which allows any system to be designed to the customers’...
  • Page 8 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF High efficient DC inverter compressor All DC inverter Mini VRF adopts highly intelligent inverter-driven compressor. This advanced technology enables the output of the outdoor unit to be modulated by the real heat load demands.. This advanced system ensures precise temperature regulation and highly efficient energy usage, making a significant contribution to the limiting the impact on the environment.
  • Page 9 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 3.6 Wide operation temperature range No matter in extremely cold winter when outdoor temperature gets as low as -15° C or in hot summer when temperature is up to 43° C, the Mini VRF system will keep stable performance.
  • Page 10 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 3.10 Auto address setting function The addresses of indoor units can be set automatically by outdoor unit. Wired controller and wireless controller can enquire and modify the address of each indoor unit. Outdoor unit can distribute address for indoor unit automatically...

  • Page 11: Indoor Units Lineup

    R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 4. Indoor Units Lineup Cassette unit Compact four-way One-way cassette Two-way cassette Four-way cassette Capacity cassette (×100W) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●...

  • Page 12: General Information

    MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF Indoor units lineup Floor-standing/Ceiling & Floor/Console Floor standing Floor standing (exposed) Ceiling & floor console (concealed) Capacity (×100W) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●...

  • Page 13: Table Of Contents

    R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 Part 2 Outdoor Units 1. Specifications ..................11 2. Dimensions ..................14 3. Service Space ..................15 4. Piping Diagrams ................. 16 5. Wiring Diagrams ................. 17 6. Field Wiring ..................19 7. Capacity Tables .................. 20 8.

  • Page 14: Specifications

    MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 1. Specifications Sale Model MDV-V120W/DRN1 MDV-V140W/DRN1 380-415V-3N~50Hz Power supply V-Ph-Hz 380-415V-3N~50Hz 12.3 14.0 Capacity Cooling Input 3.25 3.95 kW/ kW 3.78 3.54 Capacity 13.2 15.4 Heating Input 3.47 4.16 kW/ kW 3.80 Model...
  • Page 15 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 Throttle type Electronic expansion valve Design pressure 4.4/2.6 Ф9.53/Ф15.9 Ф9.53/Ф15.9 Liquid side/ Gas side Refrigerant Max. refrigerant pipe length piping Max. difference in level Power wiring 5 core x2.5 5 core x2.5 Connection 3 core shielded wire x 3 core shielded wire x wiring...
  • Page 16 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF Coil length x 1276 x 870 height 1276 x 870 Number of circuits 6000 6800 Outdoor air flow Outndoor sound level(sound pressure level ) dB(A) Dimension 900 x 1327 x 400 900 x 1327 x 400 (W x H x D) Packing Outdoor unit...

  • Page 17: Dimensions

    R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 2. Dimensions （unit：mm） M O D E L ( k W ) 1 2 / 1 4 / — — 3 2 0 9 0 0 6 0 0 3 4 8 4 0 0 3 6 0 1 3 2 7 1 6 / 1 8...

  • Page 18: Service Space

    MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 3. Service Space Single unit installation (Wall or obstacle) Air inlet >300 Maintain channel Air inlet >600 Air outlet Parallel connect the two units or above >300 >600 >2000 Parallel connect the front with rear sides >2000 >500 >3000...

  • Page 19: Piping Diagrams

    R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 4. Piping Diagrams Electronic Evaporator expansion valve High pressure Electronic switch expansion valve Condensor High pressure liquid accumulator Oil seperator Oil return capilary Compressor Low pressure Low pressure switch liquid accumulator can Oil separator: used to separate oil from high pressure & temperature gas refrigerant, which is pumped out from compressor.

  • Page 20: Wiring Diagrams

    MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF Wiring Diagrams （For 12-16kW） Specifications&Performance...
  • Page 21 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 For 18kW Specifications&Performance...

  • Page 22: Field Wiring

    MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 6. Field Wiring Specifications&Performance...

  • Page 23: Capacity Tables

    R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 7. Capacity Tables MDV-V120W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:2 temperature (Capacity (° C DB) index) 10.81...
  • Page 24 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF MDV-V120W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:2 temperature (Capacity (° C DB) index) 9.14...
  • Page 25 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 MDV-V120W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:2 temperature (Capacity (° C DB) index) 7.47...
  • Page 26 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF MDV-V120W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(°C DB/WB) Combination Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:2 temperature (Capacity (° C DB) index) 0.71...
  • Page 27 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 MDV-V120W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(°C DB/WB) Combination Outdoor DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:2 DB:20.8,WB:14 temperature (Capacity (° C DB) index) 4.15...
  • Page 28 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF MDV-V120W/DRN1 Heating TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C WB) Outdoor Air Combination (%) temperature(° C DB) (Capacity index) ° C DB ° C WB -13.7...
  • Page 29 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 MDV-V120W/DRN1 Heating TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C WB) Outdoor Air Combination (%) temperature(° C DB) (Capacity index) ° C DB ° C WB -13.7...
  • Page 30 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF MDV-V120W/DRN1 Heating TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C WB) Outdoor Air Combination (%) temperature(° C DB) (Capacity index) ° C DB ° C WB -13.7...
  • Page 31 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 MDV-V140W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (° C DB) index) 12.3 1.61...
  • Page 32 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF MDV-V140W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C DB/WB) Combination Outdoor DB:20.8,WB: DB:23.3,WB:1 DB:25.8,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:27,WB:19 DB:32,WB:24 temperature (Capacity (° C DB) index) 10.4 1.36...
  • Page 33 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 MDV-V140W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C DB/WB) Combination Outdoor DB:20.8,WB: DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:24 temperature (Capacity (° C DB) index) 10.15 1.32...
  • Page 34 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF MDV-V140W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C DB/WB) Combination Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:2 temperature (Capacity (° C DB) index) 0.86 1.01...
  • Page 35 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 MDV-V140W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C DB/WB) Combination Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:2 temperature (Capacity (° C DB) index) 4.73 0.64...
  • Page 36 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF MDV-V140W/DRN1 Heating TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C WB) Outdoor Air Combination temperature (° C DB) (Capacity index) ° C DB ° C WB -13.7 10.95 3.29...
  • Page 37 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 MDV-V140W/DRN1 Heating TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C WB) Outdoor Air Combination temperature (° C DB) (Capacity index) ° C DB ° C WB -13.7 10.8 4.05...
  • Page 38 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF MDV-V140W/DRN1 Heating TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C WB) Outdoor Air Combination temperature (° C DB) (Capacity index) ° C DB ° C WB -13.7 10.63 4.82...
  • Page 39 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 MDV-V160W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C DB/WB) Combination Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:2 temperature (Capacity (° C DB) index) 13.62 1.85...
  • Page 40 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF MDV-V160W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C DB/WB) Combination Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:2 temperature (Capacity (° C DB) index) 11.51 1.56...
  • Page 41 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 MDV-V160W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C DB/WB) Combination Outdoor DB:20.8,WB: DB:32,WB:2 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 temperature (Capacity (° C DB) index) 9.41 1.26...
  • Page 42 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF MDV-V160W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C DB/WB) Combination Outdoor DB:20.8,WB DB:32,WB:2 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 temperature (Capacity (° C DB) index) 7.31 0.99...
  • Page 43 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 MDV-V160W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (° C DB) index) 5.23 0.73...
  • Page 44 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF MDV-V160W/DRN1 Heating TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C WB) Outdoor Air Combination temperature (° C DB) (Capacity index) ° C DB ° C WB -13.7 12.09 3.77...
  • Page 45 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 MDV-V160W/DRN1 Heating TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C WB) Outdoor Air Combination temperature (° C DB) (Capacity index) ° C DB ° C WB -13.7 11.93 4.65...
  • Page 46 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF MDV-V160W/DRN1 Heating TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C WB) Outdoor Air Combination temperature (° C DB) (Capacity index) ° C DB ° C WB -13.7 11.74 5.53...
  • Page 47 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 MDV-V180W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C DB/WB) Combination Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:2 temperature (Capacity (° C DB) index) 15.37 2.17...
  • Page 48 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF MDV-V180W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C DB/WB) Combination Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:2 temperature (Capacity (° C DB) index) 1.83 15.5...
  • Page 49 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 MDV-V180W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C DB/WB) Combination Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:2 temperature (Capacity (° C DB) index) 10.62 1.47...
  • Page 50 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF MDV-V180W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C DB/WB) Combination Outdoor DB:20.8,WB:1 DB:23.3,WB:1 DB:25.8,WB:1 DB:27,WB:1 DB:28.2,WB:2 DB:30.7,WB:2 DB:32,WB:2 temperature (Capacity (° C DB) index) 8.25 1.16...
  • Page 51 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 MDV-V180W/DRN1 Cooling TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C DB/WB) Combination Outdoor DB:20.8,WB:14 DB:23.3,WB:16 DB:25.8,WB:18 DB:27,WB:19 DB:28.2,WB:20 DB:30.7,WB:22 DB:32,WB:24 temperature (Capacity (° C DB) index) 5.91 0.86...
  • Page 52 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF MDV-V180W/DRN1 Heating TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C WB) Outdoor Air Combination temperature (° C DB) (Capacity index) ° C DB ° C WB -13.7 13.51 3.95...
  • Page 53 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 MDV-V180W/DRN1 Heating TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C WB) Outdoor Air Combination temperature (° C DB) (Capacity index) ° C DB ° C WB -13.7 13.33 4.87...
  • Page 54 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF MDV-V180W/DRN1 Heating TC: Total Capacity (kW); PI: Power Input (kW) (Compressor + Outdoor fan motor) Indoor temperature(° C WB) Outdoor Air Combination temperature (° C DB) (Capacity index) ° C DB ° C WB -13.7 13.12 5.79...

  • Page 55: Electric Characteristics

    R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 8. Electric Characteristics Outdoor Unit Power Supply Compressor Model Min. Max. Voltage TOCA MDV-V120W/DRN1 380-415 2×0.1 2×0.9 MDV-V140W/DRN1 380-415 16.25 2×0.1 2×0.9 MDV-V160W/DRN1 380-415 17.5 2×0.1 2×0.9 MDV-V180W/DRN1 380-415 18.75 2×0.1 2×0.9 Remark: TOCA: Total Over-current Amps.

  • Page 56: Sound Levels

    MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 9. Sound Levels Model Noise level dB(A) Height (m) MDV-V120W/DRN1 MDV-V140W/DRN1 MDV-V160W/DRN1 MDV-V180W/DRN1 10. Operation Limits Cooling Heating Indoor temperature ( ℃ WB) Indoor temperature ( ℃ DB) Note: 1. These figures assume the following operating conditions: Equivalent piping length: 7.5m...

  • Page 57: Part 3 Installation

    R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 Part 3 Installation 1. Precautions ..................55 2. Accessories ..................56 3. Outdoor unit installation ..............56 4. Piping installation ................58 5. Electric Wiring Installations ............... 62 6. Outdoor Unit Wiring ................66 7.
  • Page 58 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 1. Precautions  Ensure that all Local, National and International regulations are satisfied.  Read this “PRECAUTIONS” carefully before Installation.  The precautions described below include the important Items regarding safety.  Observe them without fail. ...
  • Page 59 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 Inappropriate grounding may cause electric shock Do not install the air conditioner in a location subject to a risk of exposure to a combustible gas. If a combustible gas leaks, and stays around the unit, a fire may occur. 2.
  • Page 60 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 3.2 Installation space (units: mm)  Since the gravity center of the unit is not at its physical center, so please be careful when lifting it with a sling.  Never hold the inlet of the outdoor unit to prevent it from deforming. ...
  • Page 61 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 3.3 Water Outlet Four condensed water outlets on the chassis for selection display as the follow figure: Outlet for power and connecting pipes Reserve water outlet (Need to knock open) Reserve water outlet Water Outlet (With rubber stopper) While installing the outdoor unit, pay attention to the installation place and the drainage pattern;...
  • Page 62 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF The first connecting method Outdoor unit Pipe Length (IDU to the nearest branch) Maximum pipe equivalent length The first line Branch Pipe Pipe Length (from the first branch to the furthest IDU) Indoor Unit The second connecting method Outdoor unit Pipe Length (IDU to the nearest branch)
  • Page 63 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 The second connecting method Outdoor Unit(Take Model 14kW for example) (28) intdoor Units (28) (28) The first line pipe branch (28) (28) (22) Pipe definition Pipe connecting position Code The pipe between outdoor units to the Main pipe first branch of indoor unit.
  • Page 64 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF Table 2: Indoor unit main pipes selection (L1~L5) Total capacity of Main pipe size(mm) downstream indoor units Branch Pipe Air pipe Liquid pipe (kW) Φ15.9 Φ9.5 A＜16.6 FQZHN-01C 16.6≤A＜23 Φ19.1 Φ9.5 FQZHN-01C Table 3: Main pipes selection (L1) When the equivalent length of all liquid and air When the equivalent length of all liquid and air Total capacity of...
  • Page 65 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 4.7 Additional refrigerant charge Calculate the added refrigerant according to the diameter and the length of the liquid side pipe of the outdoor unit/indoor unit connection. When the outdoor unit connects one indoor unit: Liquid Side Piping Diameter Refrigerant to be Added Perimeter Piping Φ6.4...
  • Page 66 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 10) Refrigerant piping system and wiring system of indoor and outdoor unit belongs to the different system. 11) Do not connect the power wire to the terminal of signal wire. 12) When power wire is parallel with signal wire, put wires to their own wire tube and remain proper gap (the current capacity of power wire is: 10A below 300mm, 50A below 500mm).
  • Page 67 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 The shortest wiring Manual switch (A) Creepage diameter (mm) Model Power protector ≤20m ≤50m Capacity Fuse 12KW 380~415V/3N/50Hz 4*3.3 4*4.0 <100mA,0.1sec 14KW 380~415V/3N/50Hz 4*3.3 4*4.0 <100mA,0.1sec 16KW 380~415V/3N/50Hz 4*3.3 4*4.0 <100mA,0.1sec 18kW 380~415V/3N/50Hz 4*3.3 4*4.0 Note: The length in the table equals the value of power cord connecting outdoor units, indicating the condition...
  • Page 68 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 5.5 Indoor unit power wiring selection Note: 1) Set refrigerant piping system, signal wires between indoor unit, and that between outdoor units into one system. 2) Please do not put the signal wire and power wire in the same wire tube; keep distance between the two tubes.
  • Page 69 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 6. Outdoor Unit Wiring 6.1The Specification of Power Table 6-1 Capacity 12kW-16kW 18kW Phase 3 phase 3 phase Voltage and Outdoor Unit power 380-415V~ 50Hz 380-415V~ 50Hz Frequency Power Wiring(mm 5-core X2.5 5-core X2.5 Circuit Breaker/Fuse (A) Indoor unit/Outdoor unit Signal wire 3-core shielded wire...
  • Page 70 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF Indoor/Outdoor Unit Signal Wire Connect the wire according to their numbers. Wrong connection may cause malfunction. Wiring Connection Seal the wiring connection with the insulation material, or the condensing dew will be caused. NOTE The air-conditioners can connect with Central Control Monitor (CCM).
  • Page 71 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 Indoor unit power supply wiring Indoor Power Supply Circuit Breaker Manual swtich Wire Distribution Box Indoor Unit Fig.6-4 CAUTION 1. Refrigerant piping system, indoor unit-indoor unit connection signal wires and indoor unit-outdoor unit connection signal wire are in the same system.
  • Page 72 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 8. Precautions on Refrigerant Leakage This air conditioner (A/C) adopts innocuous and nonflammable refrigerant. The locating room of the A/C should big enough that any refrigerant leakage is unable to reach critical thickness. So certain essential action can be taken on time.

  • Page 73: Part 4 Troubleshooting

    R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 Part 4 Troubleshooting 1. PCB ports instructions ............... 71 2. PCB parts instructions ............... 72 3. Error code table ................... 75 4. Troubleshooting .................. 76 Troubleshooting...
  • Page 74 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 1 PCB ports instructions PCB ports instruction Content Port voltage Inspection port for inverter module voltage DC 540V,DC 15V Mutual inductor for compressor DC current In dynamic change 3CN201 Activation port of inverter module The left the first pin:DC 3.3V 4CN19...
  • Page 75 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 2 PCB parts instructions LED digital tube display SW2: Query button Function setting dial switch SW1: Forced cooling UPD78F0537A button IRMCF341 2.1 SW2 query instructions Content Note Normal display ---- Running mode 0-Standby;2-Cooling;3-Heating;4-Forced Cooling Fan speed 0-OFF Capacity requirement of indoor unit...
  • Page 76 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF Remark: Normal display: Display frequency of compressor when capacity needing. Running mode: 0──Standby; 2──COOLING; 3──HEATING; 4──FORCED COOLING. Fan speed: 0──OFF; 1~7──Speed increasing in turn. SW1: Forced cooling button. SW2: Query button. 2.3 Function setting dial switches instructions SW7(SW3) definition: Auto Addressing Dial SW7(SW3) Obtain network address automatically...
  • Page 77 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 1.4 LED on PCB instructions LED 1 (Red) LED 2(Green) LED1: Malfunction indicator lamp of inverter module. The lamp will be off if the system running is normal. And it will be on if the inverter module is faulty and the error code will display on digital tube. LED2: Running indicator lamp of inverter module.

  • Page 78: Error Code Table

    MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 3 Error code table Error code Content Note Not matched with M_HOME indoor unit Only display on 18kW For 12~16kW model EEPROM malfunction For 18kW model Communication malfunction between indoor/outdoor units All the unit For 12~16kW model Communication malfunction in outdoor PCB For 18kW model...
  • Page 79 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 4 Troubleshooting 4.1 HF: not matched with M_Home indoor unit. (Only display on 18kW model) LED display HF The communication between indoor unit chip and outdoor unit chip is not matched. Check whether the model of indoor and outdoor unit is Replace indoor unit or chip of indoor matched or not.
  • Page 80 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 4.3 E2: Communication malfunctions between indoor unit chip and outdoor unit chip. LED displays E2 Communication malfunctions between indoor unit chip and outdoor unit chip. Judge 1: Check whether the indoor unit is Plug the indoor unit in.
  • Page 81 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 4.4 E3/H0: Communication malfunction in outdoor PCB (E3 display on 12~16kW; H0 display on 18kW) LED displays E3/H0 Communication malfunction between outdoor PCB Check whether the indicator lights LED on Replace the outdoor main board the main board are flashing Check whether...
  • Page 82 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 4.5 E4: T3&T4 sensor malfunction displays Judge: T3&T4 sensor malfunction Replace T3/T4 sensor Judge: whether the body is broken. Connect the wire again. Judge whether temperature sensor pin connects Connect again. properly. Replace main PCB 4.6 E5: Voltage protection malfunction displays Voltage protection malfunction...
  • Page 83 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 4.7 E6:DC Fan Error The error may be caused by two reasons: 1). The wiring connection is wrong; 2). Power supply voltage is not normal. LED displays E6 Outdoor unit DC fan cannot work. Refers to the wiring nameplate to check Connect again.
  • Page 84 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 4.8 E7/EA: Discharge Sensor Malfunction (E7 display on 12~16kW; EA display on 18kW) T3 pipe temperature exceeds 27 degrees for more than 5 minutes under heating mode. LED displays E7/EA System faulty that T3 pipe temperature exceeds 27 degrees for more than 5 minutes under heating mode.
  • Page 85 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 4.10 P1 malfunction: High pressure protection displays High pressure protection Judge 1: whether the wiring is correct. Connect again. Judge 2: whether the wire body is broken. Judge: short-circuit high pressure switch. Check the Replace the high pressure system can operate normally.
  • Page 86 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 4.11 P2: Low pressure protection displays Low pressure protection Judge 1: whether wiring connection between low pressure Connect well switch and PCB is connected well or properly. again. Judge 2: whether the low pressure switch is damaged. Confirm: short-circuit low pressure switch and check Replace low pressure.
  • Page 87 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 4.12 P3: Compressor current protection It will protect when input current is more than 15A. It will recover when input current is less than 15A. It will recover automatically. LED displays P3 Input current protection Judge 1: check whether the input current of the power wire is more than 15A.
  • Page 88 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 4.13 P4:Compressor discharged temperature protection When the discharged temperature of the compressor is higher than 115° C, the unit will stop running. When the discharged temperature of the compressor is lower than 90° C , the unit resumes normal operation automatically.
  • Page 89 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 4.14 P5: Condenser high temperature protection When condenser temperature is higher than 62 degrees for 3 seconds, the unit will stop operating. When pipe temperature outside is lower than 52 degrees, the unit will resume operate. LED displays P5 Condenser T3 high temperature protection Check whether condenser temperature is higher than...
  • Page 90 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 4.15 P6 indicates inverter module protection; H4 indicates P6 protection has occurred 3 times in 60 minutes. When an H4 error occurs, a manual system restart is required before the system can resume operation. The cause of an xH4 error should be addressed promptly in order to avoid system damage.
  • Page 91 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 4.15.2 Principle of DC inverter Inductor Power Contactor Bridge Inverter module supply Capacitor Compressor rectifier : 540V DC) (380V ○ ○ ○ ① 380-415V AC power supply change to DC power supply after bridge rectifier. ②...
  • Page 92 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF Condition 2: L0 error appears immediately when the compressor starts up. DC bus wire is not connected Ensure DC bus wire is connected properly properly Compressor has malfunctioned Replace the compressor Replace the main PCB Notes: The DC bus wire should run from the N terminal on the inverter module, through the current sensor (in the direction indicated by the arrow on the current sensor), and end at the N terminal of capacitor.
  • Page 93 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 Condition 3: L0 error appears when the compressor starts up within 2 seconds. U V W wires between inverter module Ensure U V W wire is connected and compressor is not connected properly properly Communication terminal (10 pins) on Replace the main PCB...
  • Page 94 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF Condition 4: L0 error appears after the compressor running a period time (running frequency is over 60Hz). Discharge part of the refrigerant. Add Excess refrigerant oil if it leaks during discharge Fasten the fixing screws for the Inverter module is too hot inverter module and recoat heat dissipation materials...
  • Page 95 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 Condition 5: L0 error appears irregular. Night silent mode is set on main PCB (only available for 40/45kW side Change to no silent mode discharge units) Contact your service agency Notes: Silent mode is set on SW3 switch on main PCB: Switch Setting Switch positions...
  • Page 96 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 4.15.4 L1 / L2 troubleshooting The normal DC voltage between terminal P and N on inverter module is 540V. If the voltage is lower than 300V, the unit is in L1 error. If the voltage is higher than 800V, the unit is in L2 error. = 540V DC normal Condition 1: L1 or L2 error appears immediately when the outdoor unit is power on.
  • Page 97 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 Check the +15V circuit according to corresponding wiring diagram. If CN5 on inverter module output voltage is not +15V means the inverter module is failed. If voltage output of inverter module is +15V means main PCB is failed. P N +15 terminal BL UE CN205...
  • Page 98 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF Condition 2: L1 or L2 error appears when the compressor operates at 20-30Hz. L1 /L2 Contactor is failed Replace the contactor Replace the main PCB Notes: Check the voltage between two wires which are connected between contactor and main PCB, if the voltage is 220V AC and the contactor is not contacted indicates the contactor is failed.
  • Page 99 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 Condition 2: L4 error appears when the compressor operates at 20-30Hz. Contactor is failed Replace the contactor Replace the main PCB Notes: Check the voltage between two wires which are connected between contactor and main PCB, if the voltage is 220V AC and the contactor is not contacted indicates the contactor is failed.
  • Page 100 MCAC-VTSM-2016-10 R410A All DC Inverter Mini VRF 4.16 PE/P7 malfunction: Evaporator T2 high temperature protection (PE display on 12~16kW, P7 display on 18kW) When the middle average temperature of the evaporator is higher than 63 degrees for 50 seconds, the unit will stop operating.
  • Page 101 R410A All DC Inverter Mini VRF MCAC-VTSM-2016-10 4.17 P8: Typhoon protection displays Typhoon protection When air conditioner is standby or in malfunction stopping status, Belongs to normal protection check if there is strong air blows the fan phenomenon. Check whether the fan motor is normal. Replace fan motor.
  • Page 102 Commercial Air Conditioner Division Midea Group Add.: Midea Headquarters Building, 6 Midea Avenue, Shunde, Foshan, Guangdong, China Postal code: 528311 Midea CAC After-service Application Midea CAC News Application Tel: +86-757-26338346 Fax: +86-757-22390205 cac.midea.com global.midea.com Note: Product speci cations change from time to time as product improvements and developments are released and may vary from those in this document.

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