Midea MHC-96HWD1N1 Technical Manual
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Midea R410A
Full DC Inverter Split Type Series 50Hz
Technical Manual
Applicable Model:
Indoor unit
Outdoor unit
MHC-96HWD1N1
MOVG-96HD1N1-R
Midea reserves the right to discontinue, or change specification or designs at any time without notices and
without incurring obligations.

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Summary of Contents for Midea MHC-96HWD1N1

  • Page 1 Midea R410A Full DC Inverter Split Type Series 50Hz Technical Manual Applicable Model: Indoor unit Outdoor unit MHC-96HWD1N1 MOVG-96HD1N1-R Midea reserves the right to discontinue, or change specification or designs at any time without notices and without incurring obligations.
  • Page 2: Table Of Contents

    Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 Content Part. 1 General information ......2 Part. 2 Indoor Unit ........... 5 Part. 3 Outdoor Unit ........17 Part. 4 Installation ......... 22 Part. 5 Controller ........... 71...
  • Page 3: Part. 1 General Information

    MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual Part. 1 General information 1. Model Names of Indoor/Outdoor Units ........3 2. External Appearance ............. 3 3. Nomenclature ............... 4...
  • Page 4 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 1. Model Names of Indoor/Outdoor Units Indoor unit Outdoor unit Type Model Power supply Model Power supply Hi-static pressure MHC-96HWD1N1 220-240V~, 1Ph, 50Hz MOVG-96HD1N1-R 380-415V~, 3Ph, 50Hz duct type 2.
  • Page 5 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 3. Nomenclature 3.1 Indoor unit: M H C – 96 H W D1 N1 Refrigerant type - N1: R410A Full DC inverter Control type: Wired controller H: Heat pump Nominal cooling capacity (96×1,000Btu/h)
  • Page 6: Part. 2 Indoor Unit

    Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 Part. 2 Indoor Unit 1. Features ................6 2. Specifications ..............7 3. Dimensions (Unit: mm) ............8 4. Service Space ..............8 5. Refrigerant circuit ..............9 6. Wiring Diagrams ..............10 7.
  • Page 7: Features

    MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 1. Features  High capacity of cooling and heating,  High efficient DC inverter compressor and DC motor, more energy saving. (MEPs approval)  Thin size, even can installed at limited place.
  • Page 8: Specifications

    Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 2. Specifications Model MHC-96HWD1N1 Power supply 220-240V~, 1Ph, 50Hz Btu/h 34,120~90,418~102,360 Capacity 10,000~26,500~30,000 Cooling Input 2,400~8,200~9,800 3.23 Btu/h 44,356~90,418~102,360 Capacity 13,000~26,500~30,000 Heating Input 3,400~8,000~9,800 3.31 AEER/ACOP 3.106/3.294 Rated input...
  • Page 9: Dimensions (Unit: Mm)

    MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 3. Dimensions (Unit: mm) Pipe side view 4. Service Space Top view...
  • Page 10: Refrigerant Circuit

    Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 5. Refrigerant circuit...
  • Page 11: Wiring Diagrams

    MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 6. Wiring Diagrams...
  • Page 12 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406...
  • Page 13 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual...
  • Page 14: Capacity Table

    Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 7. Capacity Table Cooling mode: Indoor temperature Outdoor temperature (DB ° C) 20.0 27.0 30.0 35.0 40.0 46.0 DB (° C) WB (° C) 15.0 25.54 17.06 24.72 16.03 23.79...
  • Page 15 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual Heat pump mode: Outdoor temperature (DB ° C) Indoor temperature -2.0 12.0 15.0 18.0 DB (° C) 15.0 22.40 22.40 23.79 23.79 25.20 25.20 26.61 26.61 30.83 30.83 32.95 32.95...
  • Page 16: Static Pressure Curve

    Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 8. Static Pressure Curve 9. Electric Characteristics Indoor Unit Power Supply Model Voltage Min. Max. MHC-96HWD1N1 220-240V 198V 254V 6.375 0.75 Note: MCA: Min. Current Amps. (A) MFA: Max. Fuse Amps. (A)
  • Page 17: Sound Levels

    MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 10. Sound Levels Concealed Duct Type Duct Suction Discharge 1.4m Microphone 11. Accessories Name Qty. Purpose Owner’ manual Installation manual Restriction assembly Connect to system Water connective pipe Connect to water drainage pipe...
  • Page 18: Part. 3 Outdoor Unit

    Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 Part. 3 Outdoor Unit 1. Specifications ..............18 2. Dimension ................. 19 3. Service Space ..............19 4. Wiring Diagrams ..............20 5. Electric Characteristics ............21 6. Sound Levels ..............21...
  • Page 19: Specifications

    MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 1. Specifications Model MOVG-96HD1N1-R Power supply 380-415V~, 3Ph, 50Hz Ambient temp in cooling ° C 15~48 Ambient temp in heating ° C -15~24 Rated input (Whole units) 9,250 Rated current (Whole units)
  • Page 20: Dimension

    Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 2. Dimension Front view Left view (Unit: mm) Top view 3. Service Space ≥1,500mm ≥2,000mm ≥2,000mm ≥1,500mm ≥8,000mm Installation space...
  • Page 21: Wiring Diagrams

    MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 4. Wiring Diagrams...
  • Page 22: Electric Characteristics

    Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 5. Electric Characteristics Outdoor Unit Power Supply Compressor Model Voltage Min. Max. TOCA MOVG-96HD1N1-R 380-415V 342V 440V 0.75 Remark: MCA: Min. Current Amps. (A) TOCA: Total Over-current Amps. (A) MFA: Max.
  • Page 23: Part. 4 Installation

    MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual Part. 4 Installation 1. Notes ................. 23 2. Installation of Duct Type Indoor Units ........ 24 3. Installation of Outdoor Units ..........28 4. Connection of Refrigerant Pipe .......... 32 5.
  • Page 24: Notes

    Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 1. Notes CAUTION:  Install the unit where enough space of installation and maintenance is available.  Install the unit where the ceiling is horizontal and enough for bearing the weight of the indoor unit.
  • Page 25: Installation Of Duct Type Indoor Units

    MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual  Install the unit where it is convenient for pipe connection and electric connection.  The indoor unit must be installed 2.3 above floor.  The appliance shall not be installed in the laundry.
  • Page 26 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406  When the pandant bolt is fixed in wooden structure, please put rectanglar sticks across the beams, and set pendant bolts.  When in the new concrete roughcast environment, please use embedded bolts, embedded pulling plugs and stick harness.
  • Page 27 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 2.2 Designing and connecting the duct  The duct accessories and materials must be produced by professional manufacturers.  Int order to prevent air flow shoting, do not set the air inlet orifice near the air outlet orifice.
  • Page 28 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 View of air inlet side (Unit: mm)  All pipelines must be connected closely and soundly without leak of air. The pipelines must be adiabatic and free from condensation. The key points of duct connection are as following...
  • Page 29: Installation Of Outdoor Units

    MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 2.3 Install the drainage pipe  In order to prevent faults caused by condensate of the refrigerant pipe and drain pipe, perform condensate prevention and heat insulation properly. ...
  • Page 30 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406  If the unit is installed where the flowing speed of air is high, such as on the exposed roof, the measures including sunk fence and persian blinds can be taken, to prevent the turbulent flow from disturbing the air entering the unit.
  • Page 31 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual Note: * The position should be provided with an at least 50mm thick wood block, cloth or hard paper, to avoid damages to the unit.  The distance of the foundation bolt is shown in following picture.
  • Page 32 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 ≥1,500mm ≥2,000mm ≥2,000mm ≥1,500mm ≥8,000mm Installation space  The unit should be located on the horizontal foundation, the ground floor or the roof which can bear operating weight of the unit and the weight of maintenance personnel.
  • Page 33: Connection Of Refrigerant Pipe

    MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual holes on the unit base.  Return the clamp nuts of the damper to the fixing holes on the unit base, and tighten them into the damper.  Adjust the operational height of the damper base, and screw down the leveling bolts.
  • Page 34 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 or the right front board.  Schematic diagram of connection between indoor unit and outdoor unit:  When welding the refrigerant pipe, in order to prevent internal oxidation of the pipe, nitrogen must be filled in.
  • Page 35 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual for cleaning.  Pipes size of the units: Liquid pipe Gas pipe Φ12.7mm Φ28.6mm  All connections between indoor unit and outdoor unit are copper-to copper and should be brazed with a phosphorous-copper alloy material such as Silfos-5 or equivalent.
  • Page 36 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406  Pipe diameters are for lengths up to 50 equivalent meter and/or 25m vertical differential. Do not increase or decrease pipe sizes.  Pipe set and indoor can be pressurized, to 250 psig with dry nitrogen and leak tested with a bubble type leak detector.
  • Page 37 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual  Do not over tighten. (between 40 and 60 inch-lbs. maximum)  Evacuate the vapor line, evaporator and the liquid line, to 500 microns or less.  Replace cap on service ports. Do not remove the flare caps from the service ports except when necessary for servicing the system.
  • Page 38 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406  Use the refrigerant in the outdoor unit to expel air.  Screw up the pipe nuts at A, B, C and D completely.  Loosen and remove the square-head cover of valves A and B, rotate the square-head spool of valve B counter-clockwise for 45 degrees and stay for about 10 seconds, and then close the spool of valve B tightly.
  • Page 39 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual  Use a vacuum pump  Loosen and remove the maintenance orifice nut of valve A, and connect the filler hose of the manifold valve to the maintenance orifice of valve A (Tighten both valve A and valve B).
  • Page 40 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 picture.  Procedure of opening the valve: Open the square-head cover, use a spanner to capture the square head and open it thoroughly. Then tighten the square-head cover. ...
  • Page 41: Heat Insulation Of Refrigerant Pipe

    MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual )] ≤ Density threshold: 0.3kg/m [A (kg)] / [B (m  Measures against crossing of the refrigerant density threshold.  In order to keep the refrigerant density below the threshold value, please install a mechanic ventilation device.
  • Page 42: Electric Connection

    Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 apply 10mm or thicker adiabatic wool (16~20kg/m ) to the refrigerant pipe and the drain pipe in addition to applying the general heat insulation materials. Enough heat insulation materials should also be applied to the refrigerant joint and the pipe joint.
  • Page 43 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual  An all-pole disconnection device which has at least 3mm separation distance in all pole and a residual current device (RCD) with the rating of above 10mA shall be incorporated in the fixed wiring according to the national rule.
  • Page 44 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 6.4 Electric wire diagram When connect the wire, pay attention to the phase sequence of the power supply. If the phase sequence is reversed, the compressor will not start. Meanwhile, the fault indicator of the outdoor electric control board will light up.
  • Page 45: Duct Design Scheme

    MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 7. Duct Design Scheme Examples of construction and ventilation pipeline design scheme (Flowering hidden series.) Construction and ventilation pipeline design scheme...
  • Page 46 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 Methods of configuring and selecting installation Material name Characteristics, advantages and other contents 1. Install the filter at the main body grille in case the store height is low, and at the main body of the indoor unit in case the store height is high.
  • Page 47 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 1. Fixed model that diffuses air at a 360 angle. 2. The outline size should increase when the air volume is over 350CMH. (For above 303), i.e., when about 9 diffusers are required, the outline size should increase.
  • Page 48: Trial Run

    Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 1. Low noise compared with other air outlets. Applicable to tall buildings that require a long distance of air conditioning. 2. Select the ventilation pipe connection caliber according to the distance and the air speed.
  • Page 49: Trouble Shooting

    MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual  Use the remote controller or wired controller to let the air conditioner run in the cooling mode. Inspect the following items according to the operation manual. If any fault occurs, remove the fault first.
  • Page 50 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 must be performed by professional maintainers.  This phenomenon may also occur when the air conditioner shifts from defrosting operation to heating operation. That is because the moist generated by defrosting is expelled as steam.
  • Page 51 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 9.2 Faults of air conditioner and cause  If any of the following exceptions occur, operation of the air conditioner will be immediately stopped. Turn off the power switch, and check it.
  • Page 52 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 Symptom Possible causes Way of handing The condenser or evaporator is Clean the heat-exchanger. too dirty. The filter is blocked. Clean the filter. The intake orifice or exhaust Remove foreign mattes to keep well orifice of the indoor and outdoor ventilated.
  • Page 53 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual  The transmitting symbol does not blink. Symptom Check item Cause Pressing ON/OFF button, the remote Check whether the batteries of When the batteries are exhausted, the controller signal remote controller are low.
  • Page 54 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 9.4 Duct type indoor unit malfunction and protection codes Names of indicators in receiving kit (When selecting remote controller) Display content Fault or protection meaning Timer lamp flashing Communication error between indoor and outdoor unit.
  • Page 55 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual  Timer lamp flashing or show [E1]  Operation lamp flashing or show [E2]  Operation lamp flashing or show [E3]...
  • Page 56 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406  Operation lamp flashing or show [E4] Notes: T2B temperature sensor is used to detect the refrigerant temperature of evaporator’s outlet.  Timer lamp flashing or show [E6] ...
  • Page 57 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 9.5 Outdoor unit malfunction and protection codes Error Content Note /code Phase sequence error Indoor & outdoor unit communication error Ambient temperature T4/pipe temperature T3 sensor error Voltage error...
  • Page 58 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406  E1: Phase sequence error  E2: Indoor & outdoor unit communication error  E4: Ambient temperature T4/pipe temperature T3 sensor error...
  • Page 59 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual  E5: Voltage error  E7: Discharge sensor error  E9: Eeprom error...
  • Page 60 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406  H0: Between main chip(MC9S08AC128) and inverter modular chip (IR341) communication error H1: Between main chip and ‘0537’ chip communication error  P0: Top temperature protection of compressor P4: Discharge temperature protection Notes: There are three times in 100 minutes, ‘H6’...
  • Page 61 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual  P1: High temperature protection or high temperature protection of discharge sensor...
  • Page 62 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 P2: Low pressure protection Notes: There are three times in 60 minutes, ‘H5’ will be displayed. Repower-on, the protection will be canceled. At the same time, the reason of protection should be settled.
  • Page 63 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual P3: Over-current protection of compressor...
  • Page 64 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 P5: Pipe temperature protection Notes: the pipe temperature sensor is T3 sensor, which detects the outlet temperature of condenser.
  • Page 65 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual P6: Inverter module protection Notes:  There are three times in 30 minutes, ‘H4’ will be displayed. Repower-on, the protection will be canceled. At the same time, the reason of protection should be settled.
  • Page 66 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 Check the voltage of DC generatrix, the normal value should be 510 to 580V. If the value is less than 510V, go to next step. Check the wiring connection of rectifier circuit, find out any loose in the circuit, and check the filter board, single-phase rectifier stack, and three-phase rectifier stack.
  • Page 67 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual If the compressor start normally, that means compressor is OK, control box A is malfunction, then check the inverter module. If the compressor could not start normally, that means the compressor is malfunction, the go to step 3 to check the compressor.
  • Page 68 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 Fig. C Fig. D L1: DC generatrix low voltage error L4: MCE error/ synchronization/ closed loop Step 1: Check the DC voltage between P and N terminal, the normal value should be 510V~580V, if the voltage is lower than 510V, go to step 2.
  • Page 69 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual L2: DC generatrix high voltage error Step 1: Check the DC voltage between P and N terminal, the normal value should be 510V~580V, if the voltage is higher than 580V, go to step 2.
  • Page 70: Maintenance

    Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 P9: DC Fan module protection Notes: There are three times in 60 minutes, ‘H9’ will be displayed. Repower-on, the protection will be canceled. At the same time, the reason of protection should be settled.
  • Page 71 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual Check whether the air inlet or outlet of the indoor unit and outdoor unit is blocked. Remove foreign substance if any. Check whether the ground wire is connected properly.
  • Page 72: Part. 5 Controller

    Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 Part. 5 Controller 1. Wireless Remote Controller (Optional) ........ 72 2. Wired Controller: KJR-29B1/BK-E (Standard) ..... 78 3. Weekly Wired Controller: KJR-120C/BW-E (Optional) ..90...
  • Page 73 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 1. Wireless Remote Controller (Optional) When choose remote controller, the display box in E-box should be move to the place which can be easy to receive the signal from remote controller. The Wire between display box and indoor unit PCB board is 200mm.
  • Page 74 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 1. TEMP Button: Push the TEMP button to decrease the indoor temperature setting or to adjust the TIMER in a counter-clockwise direction. 2. MODE Select Button: Each time you push the button, a mode is selected in a sequence that goes from AUTO, COOL, DRY, HEAT and FAN as the following figure indicates: 3.
  • Page 75 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 1.3 Names and functions of indicators on remote controller ①TRANSMISSION Indicator: This indicator lights when remote controller transmits signals to indoor unit. ② MODE Display: Show the current operation modes-- AUTO, COOL, DRY and HEAT. HEAT is only available for heat pump model.
  • Page 76 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 ※ To install batteries, slide back the cover of the battery compartment and install the batteries according to the directions (+and -) shown on the Remote Controller. ※ To replace the old batteries, use the same method as mentioned above.
  • Page 77 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual HEATING mode, the most comfortable settings are 28 or below. ° C ※ Push the FAN SPEED to select the FAN mode of AUTO, HIGH, MED or LOW. ※ Push the ON/OFF button. The operation lamp lights and the air conditioner start to operate per your settings.
  • Page 78 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 ※ Push the TIMER button and the remote controller will show the last set time for the START operation and the signal "h" will be shown on the display panel. You are now ready to readjust the TIMER OFF to stop the operation.
  • Page 79 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 2. Keep the Remote Controller away any liquids. 3. Protect the Remote Controller from high temperatures and exposure to radiation. 4. Keep the indoor receiver out of direct sunlight or the air conditioner may malfunction.
  • Page 80 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 2.2 Wired controller outlook 2.3 Operation instructions 1) Remote signal receiving function: the wired controller can be a remote signal receiving device, it is possible to use the wireless remote controller to control the air conditioner through the wired controller when the system have been powered on.
  • Page 81 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 3) Set the operating mode Press the mode button to set the operating mode, after each button press the operating mode will circle as follow: 4) Fan speed setting...
  • Page 82 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 Under the timer on setting status, press the timer/clock setting button , then enter into the timer off setting status, and the screen will display The setting method of timer off is the same as the timer on.
  • Page 83 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual Under the locking state, the wired controller will not respond to the buttons pressing and the control instruction from the wireless remote controller. Simultaneously press the temperature adjusting buttons again can cancel the locking state.
  • Page 84 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 2.4 Installation of wired controller 1) Safety precaution  Stated below are important safety issues that must be obeyed. Confirm there is no abnormal phenomena during test operation after complete.
  • Page 85 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 3) Supplied assemblies on the site Qty (Embedded Specification (Only Name Remarks into wall) for reference) 4-core shielded cable 0.5mm ×4 The longest is 15m. 86 Electrician box Wiring tube (Insulating sleeve and tightening screw.)
  • Page 86 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406  Wiring principle sketch:  Wiring figure: Connect two terminals of embedded 4-core shielding wire with the switching wires of wired controller and signal receiving board. Make sure the sequence of 4 terminals (A, B, C and D) should correspond to the wire sequence of signal switching wires (A, B, C and D).
  • Page 87 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual  Wired controller back cover installation Use straight head screwdriver to insert into the buckling position in the bottom of wired controller, and spin the screwdriver to take down the back cover. Pay attention to spinning direction, otherwise will damage the back cover.
  • Page 88 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 Use cross head screws to fix the wired controller bottom cover in the electrical box through the screw bar. Make sure the wired controller bottom cover is on the same level after installation, and then install the wired controller back to the bottom cover.
  • Page 89 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual Avoid the water enter into the wired controller, use trap and putty to seal the connectors of wires during wiring installation. When under installation, reserve certain length of the connecting wire for convenient to take down the wired controller while during maintenance.
  • Page 90 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406  Wired controller initial parameter setting Change the related functions of the controller through adjusting the initial parameters. The wired controller initial parameter includes two codes ‘XY”. The first code ‘X’ means the function class, the second code ‘Y’...
  • Page 91 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 3. Weekly Wired Controller: KJR-120C/BW-E (Optional) 3.1 Weekly wired controller specifications Model KJR-120C/BW-E Power Supply Voltage 12V DC Ambient Temperature Range -5° C~43° C Ambient Humidity Range RH40%~RH90% Performance Features 1.
  • Page 92 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 3.2 Keypad of weekly wired controller 1, Power on/off 2, Mode 3, adjust button 4, Fan speed 5, Up-down swing (Reserved) 6, Left-right swing (Reserved) 7, Follow me (Reserved)
  • Page 93 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual Operation mode indication Fan speed indication Left-right swing indication (Reserved) Up-down swing indication (Reserved) Faceplate function indication (Reserved) Follow me function indication (Reserved) º C / º F indication (Reserved)
  • Page 94 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 3.4 Operation instructions 3.4.1 Preparatory operation Set the current day and time  Press the TIMER button for 3 seconds or more. The timer display will flash. Press the button ‘+’ or ‘-‘ to set the date. The selected date will flash.
  • Page 95 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual  Press the FAN SPEED button to set the fan speed. In the mode of Auto and Dry, this button is unavailable. 3.4.4 Child lock function Press the button ‘+’ and ‘-‘ simultaneously for 3 seconds to activate the child lock function and lock all buttons on the wired controller.
  • Page 96 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 Press the CONFIRM button and the Clock display is flashing. Press the button ‘+’ or ‘-‘ to set the time. After the time is set, the timer will start or stop automatically.
  • Page 97 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 3.6 Weekly timer  Weekly timer setting Press the TIMER button to select the icon and then press the CONFIRM button to confirm.  Day of the week setting Press the button ‘+’...
  • Page 98 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 3.6.4 Set the DAY OFF (for a holiday) During the weekly timer, press the CONFIRM button. Press the button ‘+’ or ‘-‘ to select the day in this week.
  • Page 99 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual 3.6.6 Copy out the setting in one day into the other day A reservation made once can be copied to another day of the week. The whole reservation of the selected day of the week will be copied.
  • Page 100 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406 3.7 Error code If the system does not properly operate except the above mentioned cases or the above mentioned malfunction is evident, investigate the system according to the following procedures.
  • Page 101 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual  Do not install at the place where cover with heavy oil, vapor or sulphureted gas. Otherwise, this product would be deformed that would lead to system malfunction. 3.8.1 Installation accessory Name Qty.
  • Page 102 Midea R410A Full DC Inverter Split Type Series Technical Manual MCAC-UTSM-201406  Adjust the length of two plastic bolts base on the length of throughout from standard electric cabinet to the wall. Confirm the two bolts fixing in the cabinet are in the same length and vertical to the wall surface.
  • Page 103 MCAC-UTSM-201406 Midea R410A Full DC Inverter Split Type Series Technical Manual  Connect wired controller to indoor unit main PCB board through 4-core shield cable which is the accessory with indoor unit.  The connection wire should be connected to the terminal CN52 of indoor PCB board.

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