Midea MDV-D22Q1/N1-D Technical Manual
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Midea MDV-D22Q1/N1-D Technical Manual

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TECHNICAL MANUAL
ONE WAY CASSETTE
MDV-D22Q1/N1-D
MDV-D36Q1/N1-D

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Summary of Contents for Midea MDV-D22Q1/N1-D

  • Page 1 TECHNICAL MANUAL ONE WAY CASSETTE MDV-D22Q1/N1-D MDV-D36Q1/N1-D MDV-D71Q1/N1-D...
  • Page 2 MCAC-VTSM-2017-01 One-way Cassette...
  • Page 3 One-way Cassette MCAC-VTSM-2017-01 One-way Cassette 1. Features..................... 4 2. Specifications ................... 5 3. Dimensions ..................8 4. Service Spaces .................10 5. Piping Diagrams ................11 6. Wiring Diagrams ................12 7. Capacity Tables................15 8. Electrical Characteristics ............... 21 9. Sound Levels .................. 22 10.
  • Page 4 MCAC-VTSM-2017-01 One-way Cassette 1. Features 1.1 New panel design The new panel is equipped with digital display function, which can show temperature, warning message and check running parameters. 1.2 Compact design For capacity 1.8kW to 3.6kW, needs only 153mm space above the ceiling. And 189mm for 4.5~7.1kW models.
  • Page 5 One-way Cassette MCAC-VTSM-2017-01 2. Specifications Model MDV-D22Q1/N1-D Power supply 1 phase, 220-240V, 50Hz Capacity Cooling Input Rated current 0.24 0.24 Capacity Heating Input Rated current 0.24 0.24 Model RPS12N Type Indoor fan motor Input(H/M/L) 29.5/26.7/25.0 29.5/26.7/25.0 μF Capacitor Speed (H/M/L)
  • Page 6 MCAC-VTSM-2017-01 One-way Cassette Specifications Model MDV-D36Q1/N1-D Power supply 1 phase, 220-240V, 50Hz Capacity Cooling Input Rated current 0.25 Capacity Heating Input Rated current 0.25 Model RPS12N Type Indoor fan motor Input(H/M/L) 31.0/27.2/25.3 μF Capacitor Speed (H/M/L) r/min 1270/1050/790 Number of rows Tube pitch(a) ×...
  • Page 7 One-way Cassette MCAC-VTSM-2017-01 Specifications Model MDV-D71Q1/N1-D Power supply 1 phase, 220-240V, 50Hz Capacity Cooling Input Rated current 0.36 Capacity Heating Input Rated current 0.36 Model YDK43-4 Type Indoor fan motor Input(H/M/L) 56.2/40.2/28.7 μF Capacitor Speed (H/M/L) r/min 1150/1020/850 Number of rows Tube pitch(a) ×...
  • Page 8 MCAC-VTSM-2017-01 One-way Cassette 3. Dimensions MDV-D22Q1/N1-D MDV-D36Q1/N1-D 1060 1180 1020...
  • Page 9 One-way Cassette MCAC-VTSM-2017-01 MDV-D71Q1/N1-D 1350 75 30 1054 1061 1235 1235 Please use the installation paper plate to make sure the position of the installation screws. 4×Φ10 Screw fixing size:D Ceiling cutting size:C 45-71 18-36 Unit：mm 1100 1290 1015 1235...
  • Page 10 MCAC-VTSM-2017-01 One-way Cassette 4. Service Spaces Please avoid installing in the following places: A place with flammable gas or material. A saline place such as a seashore vicinity. A place with sulphur gas. A place with oil gas, such as kitchen. A place with high-humidity air.
  • Page 11 One-way Cassette MCAC-VTSM-2017-01 5. Piping Diagrams motor flare nut gas side heat exchanger flare nut liquid side...
  • Page 12 MCAC-VTSM-2017-01 One-way Cassette 6. Wiring Diagrams MDV-D22Q1/N1-D MDV-D36Q1/N1-D...
  • Page 13 One-way Cassette MCAC-VTSM-2017-01 MDV-D71Q1/N1-D XP3 XS3 CN9 CN17 XP1 XS1 XP2 XS2 CN18 CN13...
  • Page 14 MCAC-VTSM-2017-01 One-way Cassette HP set switch ENC1 definition list Code Name Indoor Unit Fan motor Code Capacity Value Swinging motor 1800W(0.6HP) Water drainage pump 2200W(0.8HP) Water level switch 2800W(1.0HP) Electronic expansion valve 3600W(1.2HP) Indoor temp. sensor 4500W(1.5HP) Mid-pipe temp. sensor of evaporator 5600W(2.0HP) Outlet temp.
  • Page 15 One-way Cassette MCAC-VTSM-2017-01 7. Capacity Tables 7.1 Cooling TC: total capacity SC: sensible capacity WB: wet-bulb temperature DB: dry-bulb temperature Indoor temperature (℃ WB/DB) Indoor 14/20 16/23 18/26 19/27 20/28 22/30 24/32 Outdoor temperature Unit size (℃ DB) (kW) 10.0 12.0 14.0 16.0...
  • Page 16 MCAC-VTSM-2017-01 One-way Cassette Indoor temperature (℃ WB/DB) Indoor 14/20 16/23 18/26 19/27 20/28 22/30 24/32 Outdoor temperature Unit size (℃ DB) (kW) 23.0 25.0 27.0 29.0 31.0 33.0 35.0 37.0 39.0 42.0 44.0 46.0 10.0 12.0 14.0 16.0 18.0 20.0 21.0 23.0 25.0...
  • Page 17 One-way Cassette MCAC-VTSM-2017-01 Indoor temperature (℃ WB/DB) Indoor 14/20 16/23 18/26 19/27 20/28 22/30 24/32 Outdoor temperature Unit size (℃ DB) (kW) 44.0 46.0 10.0 12.0 14.0 16.0 18.0 20.0 21.0 23.0 25.0 27.0 29.0 31.0 33.0 35.0 37.0 39.0 42.0 44.0 46.0...
  • Page 18 MCAC-VTSM-2017-01 One-way Cassette 7.2 Heating TC: total capacity WB: wet-bulb temperature DB: dry-bulb temperature Indoor temperature (℃ DB) Outdoor temperature 16.00 18.00 20.00 21.00 22.00 24.00 Indoor Unit size (℃) (kW) -19.8 1.23 1.23 1.23 1.23 1.23 1.23 -18.8 1.32 1.32 1.32 1.32...
  • Page 19 One-way Cassette MCAC-VTSM-2017-01 Indoor temperature (℃ DB) Outdoor temperature 16.00 18.00 20.00 21.00 22.00 24.00 Indoor Unit size (℃) (kW) -7.60 -7.00 2.43 2.43 2.43 2.43 2.43 2.43 -5.60 -5.00 2.53 2.53 2.53 2.53 2.53 2.53 -3.70 -3.00 2.66 2.66 2.66 2.66 2.66...
  • Page 20 MCAC-VTSM-2017-01 One-way Cassette Indoor temperature (℃ DB) Outdoor temperature 16.00 18.00 20.00 21.00 22.00 24.00 Indoor Unit size (℃) (kW) 13.70 15.00 5.65 5.40 5.00 4.85 4.60 4.20 -19.8 3.53 3.53 3.53 3.53 3.53 3.53 -18.8 3.78 3.78 3.78 3.78 3.78 3.78 -16.7...
  • Page 21 One-way Cassette MCAC-VTSM-2017-01 8. Electrical Characteristics Indoor Unit Power Supply Model Voltage(V) Min. (V) Max. (V) MDV-D22Q1/N1-D 220-240 0.24 0.012 0.192 MDV-D36Q1/N1-D 220-240 0.25 0.012 MDV-D71Q1/N1-D 220-240 0.36 0.43 0.288 Remark: MCA: Min. Current Amps. (A) MFA: Max. Fuse Amps. (A) KW: Fan Motor Rated Output (kW) FLA: Full Load Amps.
  • Page 22 MCAC-VTSM-2017-01 One-way Cassette 9. Sound Levels 9.1 Test condition ONE-WAY CASSETTE TYPE 1.4m 1.0m Microphone 9.2 Test value Sound test value dB(A) Model MDV-D22Q1/N1-D MDV-D36Q1/N1-D MDV-D71Q1/N1-D...
  • Page 23 One-way Cassette MCAC-VTSM-2017-01 MDV-D22Q1/N1-D NC60 NC50 NC40 NC30 NC20 1000 2000 4000 8000...
  • Page 24 MCAC-VTSM-2017-01 One-way Cassette MDV-D36Q1/N1-D NC60 NC50 NC40 NC30 NC20 1000 2000 4000 8000 MDV-D71Q1/N1-D NC60 NC50 NC40 NC30 NC20 1000 2000 4000 8000...
  • Page 25 One-way Cassette MCAC-VTSM-2017-01 10. Accessories Standard accessories Name Quantity Outline Function Indoor unit installation manual Hand to the user Installation paper plate For installing the suspender and cutting the ceiling Protection sleeve for For heat insulation of the pipe connections refrigerant inlet and outlet pipes Fastening belt For fastening...
  • Page 26 11. Troubleshooting contents Display Panels ..................27 Errors ....................32 Troubleshooting .................. 33 Appendix ............ ¡Error! Marcador no definido.
  • Page 27 1 Display Panels 1.1 Types of Display Panel Two types of display panel are used on VRF indoor units: digital display panels (the new style display panels) and the four LED display panels (the old style display panels). Examples of the two styles are shown in Figures 3.1 and 3.2.
  • Page 28 1.3 Digital Display Parameter Output On pressing the button on a digital display panel the parameters given in Table 3.2 are displayed (unless the unit is in an error state, in which case the digital display displays the error code). On the first press, parameter no. 1 is displayed, on the second press, parameter no.
  • Page 29 The unit address is indicated by the combination of the states (on, off or flashing) of the four LEDs and the state (sounding or not sounding) of the alarm. Determining a unit’s address involves two steps. Step 1: Determine address range ▪...
  • Page 30 Table 3.5: Address determination procedure examples Example Address Address range Sum of LED Alarm state LED states Unit address range base value contributions OPERATION TIMER Not sounding 0 - 15 DEF./FAN (= 8 + 4 + 2) (= 0 + 14) ALARM OPERATION Flashing...
  • Page 31 1.4.2 Unit capacity setting On pressing the MANUAL button on a four LED display panel continuously for 10 seconds the unit’s capacity setting (as set on switch ENC1 on the indoor unit main PCB) is indicated by the statuses of the four LEDs. Figure 3.5: MANUAL button on a four LED display panel The unit’s ENC1 capacity setting is indicated by the combination of the statuses (on or off) of the four LEDs.
  • Page 32 2 Errors 2.1 Error Code Table Table 4.1: Error code table Error Display output Content code Four LED display Digital display Mode conflict DEF./FAN LED flashes rapidly Communication error between indoor and outdoor units TIMER LED flashes rapidly Indoor ambient temperature sensor error OPERATION LED flashes rapidly Indoor heat exchanger mid-point temperature sensor OPERATION LED flashes rapidly...
  • Page 33 3 Troubleshooting 3.1 Warning Warning ▪ All electrical work must be carried out by competent and suitably qualified, certified and accredited professionals and in accordance with all applicable legislation (all national, local and other laws, standards, codes, rules, regulations and other legislation that apply in a given situation). ▪...
  • Page 34 3.2.5 Explanation There are five priority mode options, which are set on the outdoor units. If an indoor unit’s operating mode conflicts with that of the outdoor units, the indoor unit displays the mode conflict error. The five priority modes are: 1.
  • Page 35 3.3. E1 Troubleshooting 3.3.1. Display output TIMER LED flashes twice per second 3.3.2. Description ▪ Communication error between indoor and outdoor units. 3.3.3. Impact on other units ▪ Refer to 4.2 “Impact on Other Units”. 3.3.4. Possible causes ▪ Communication wires between indoor and outdoor units not connected properly. ▪...
  • Page 36 3.3.5. Procedure Communication wires P Q E have Reconnect the communication wires short circuited or disconnected Communication wires P Q E are not Connect the communication wires in a connected in a daisy chain daisy chain Interference from high voltage (220V Ensure the communication wires and or higher) wires high voltage wires are separated...
  • Page 37 3.4. E2, E3, E4 Troubleshooting 3.4.1. Display output OPERATION LED flashes twice per second OPERATION LED flashes twice per second OPERATION LED flashes twice per second 3.4.2. Description ▪ E2 indicates an indoor ambient temperature sensor error. ▪ E3 indicates an indoor heat exchanger mid-point temperature sensor error. ▪...
  • Page 38 3.5. E6 Troubleshooting 3.5.1. Display output TIMER LED flashes once per second 3.5.2. Description ▪ Fan error. ▪ Either the main PCB cannot detect the fan, or the difference between the actual fan speed and the target fan speed exceeds the limit. 3.5.3.
  • Page 39 3.5.5. Procedure The fan is stuck or blocked Remove obstacles Control and/or power wires between Ensure the wires are connected main PCB and fan motor are loose properly IDU power supply is abnormal Provide normal power supply The fan control and/or fan power Replace indoor main PCB supply voltages are abnormal Replacing the fan motor resolves the...
  • Page 40 3.6. E7 Troubleshooting 3.6.1. Display output DEF./FAN LED flashes twice per second 3.6.2. Description ▪ EEPROM mismatch. 3.6.3. Impact on other units ▪ Refer to 4.2 “Impact on Other Units”. 3.6.4. Possible causes ▪ Damaged main PCB. 3.6.5. Procedure Replace indoor main PCB...
  • Page 41 3.7. Ed Troubleshooting 3.7.1. Display output ALARM LED flashes once per second 3.7.2. Description ▪ Outdoor unit error. 3.7.3. Impact on other units ▪ Refer to 4.2 “Impact on Other Units”. 3.7.4. Possible causes ▪ Outdoor unit error. 3.7.5. Procedure Refer to outdoor unit technical documentation...
  • Page 42 3.8. EE Troubleshooting 3.8.1. Display output ALARM LED flashes twice per second 3.8.2. Description ▪ Water level error. 3.8.3. Impact on other units ▪ Refer to 4.2 “Impact on Other Units”. 3.8.4. Possible causes ▪ Water level float stuck. ▪ Water level switch not connected properly. ▪...
  • Page 43 3.9. FE Troubleshooting 3.9.1. Display output OPERATION and TIMER LEDs flash 3.9.2. Description ▪ Indoor unit has not been assigned an address. 3.9.3. Impact on other units ▪ Refer to 4.2 “Impact on Other Units”. 3.9.4. Possible causes ▪ Indoor unit has not been assigned an address. 3.9.5.
  • Page 44 3.10. Louver Swing Failure Troubleshooting 3.10.1. Display output ▪ No special display output or error code. 3.10.2. Description ▪ Louvers fail to respond to instruction from wired or remote controller. 3.10.3. Possible causes ▪ Louver swing motor not connected properly or has malfunctioned. ▪...
  • Page 45 4. Appendix 4.1 Temperature Sensor Resistance Characteristics Table 6.1: Indoor ambient temperature sensor, indoor heat exchanger mid-point temperature sensor and indoor heat exchanger outlet temperature sensor resistance characteristics Temperature Resistance Temperature Resistance Temperature Resistance Temperature Resistance (°C) (kΩ) (°C) (kΩ) (°C) (kΩ) (°C)

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Mdv-d36q1/n1-dMdv-d71q1/n1-d

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