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Midea MFA3T-96CRN1, Technical & Service Manual

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Midea MFA3T-96CRN1 Technical & Service Manual Download Page 54

Midea R410A T3 50Hz Top-discharge Series                                                                    MCAC-UTSM-201707 

53 

 

 

When in the new concrete roughcast environment, please use embedded bolts, embedded 

pulling plugs and stick harness. On steel bar have some holes to hang pipe and embed 

screw bolts. 

 

 

When in steel beam and girder structure, set and use supportive angle steel.

 

 

 

After install the indoor units, use a hoisting device to hoist the indoor unit, and align it with 

the installation screws to adjust the horizontality. Finally, Tighten the screws.

 

 

                 

2.2 Designing and connecting the duct 

 

The duct design must comply with the national heating air conditioner pipeline design 

Summary of Contents for MFA3T-96CRN1

Page 1: ...l Service Manual Applicable Model Indoor unit Outdoor unit MTB1T 96C H WN1 MOVTA 96C H N1 R MHB1T 96C H WN1 MFA3T 96C H RN1 Midea reserves the right to discontinue or change specification or designs a...

Page 2: ...Midea R410A T3 50Hz Top discharge Series MCAC UTSM 201707 1 Content Part 1 General information 2 Part 2 Indoor Unit 6 Part 3 Outdoor Unit 40 Part 4 Installation 49 Part 5 Controller 86...

Page 3: ...MCAC UTSM 201707 Midea R410A T3 50Hz Top discharge Series 2 Part 1 General information 1 Model Names of Indoor Outdoor Units 3 2 External Appearance 4 3 Nomenclature 5...

Page 4: ...pe MTB1T 96CWN1 220 240V 1Ph 50Hz MOVTA 96CN1 R 380 415V 3Ph 50Hz 28 1 96 0 Hi static pressure duct type MHB1T 96CWN1 Floor standing type MFA3T 96CRN1 1 2 Model names of units with heat pump Indoor un...

Page 5: ...MCAC UTSM 201707 Midea R410A T3 50Hz Top discharge Series 4 2 External Appearance 2 1 Indoor units MTB1T 96C H WN1 MHB1T 96C H WN1 MFA3T 96C H RN1 2 2 Outdoor unit MOVTA 96C H N1 R...

Page 6: ...h Ambient type T or Omit Tropical type Series number Indoor unit type T Medium static pressure duct type H High static pressure duct type F Floor standing type Midea 3 2 Outdoor unit M O V T A 96 C N...

Page 7: ...MCAC UTSM 201707 Midea R410A T3 50Hz Top discharge Series 6 Part 2 Indoor Unit Duct Type 7 Floor standing Type 25...

Page 8: ...01707 7 Duct Type 1 Features 8 2 Specifications 9 3 Dimensions Unit mm 11 4 Service Space 12 5 Refrigerant circuit 13 6 Wiring Diagrams 14 7 Capacity Table 16 8 Static Pressure Curve 19 9 Electric Cha...

Page 9: ...vides homogeneous conditioning of the room temperature The air outlet is laid out in the way you desire Available for remote control or wire control Low noise design It is suitable be used for office...

Page 10: ...Brand Matchwell Yongan Matchwell Yongan Input Hi Med Lo W 880 730 615 880 730 615 Capacitor 20 F 450V 20 F 450V Speed Hi Med Lo r min 1 100 990 880 1 100 990 880 Coil Number of rows 4 4 Tube pitch a...

Page 11: ...the straight pipe as the accessory in indoor unit with inlet refrigerant pipe to change the diameter of liquid pipe to 9 52 When the length of the refrigerant pipe is more than 30m and less than 50m p...

Page 12: ...n Input Hi Med Lo W 910 780 680 910 780 680 Capacitor 20 F 450V 20 F 450V Speed Hi Med Lo r min 1 320 1 230 1 120 1 320 1 230 1 120 Indoor coil Number of rows 4 4 Tube pitch a row pitch b mm 25 4 22 2...

Page 13: ...traight pipe as the accessory in indoor unit with inlet refrigerant pipe to change the diameter of liquid pipe to 9 52 When the length of the refrigerant pipe is more than 30m and less than 50m please...

Page 14: ...Midea R410A T3 50Hz Top discharge Series MCAC UTSM 201707 13 2 Dimensions Unit mm MTB1T 96C H WN1 MHB1T 96C H WN1...

Page 15: ...MCAC UTSM 201707 Midea R410A T3 50Hz Top discharge Series 14 3 Service Space...

Page 16: ...Midea R410A T3 50Hz Top discharge Series MCAC UTSM 201707 15 4 Refrigerant circuit Cooling only MTB1T 96CWN1 MHB1T 96CWN1 Heat pump MTB1T 96HWN1 MHB1T 96HWN1...

Page 17: ...MCAC UTSM 201707 Midea R410A T3 50Hz Top discharge Series 16 5 Wiring Diagrams MTB1T 96CWN1 MHB1T 96CWN1...

Page 18: ...Midea R410A T3 50Hz Top discharge Series MCAC UTSM 201707 17 MTB1T 96HWN1 MHB1T 96HWN1...

Page 19: ...0 11 8 24 25 34 21 11 8 65 26 60 22 17 9 08 32 20 25 49 23 50 7 40 27 14 24 67 7 77 28 50 25 91 8 16 25 10 22 81 8 56 26 35 23 95 8 99 27 67 25 15 9 44 3000 23 90 26 50 17 92 7 69 28 23 18 82 8 08 29...

Page 20: ...24 04 20 03 14 00 32 20 23 35 21 23 11 41 24 52 22 29 11 98 25 75 23 41 12 58 22 67 20 61 13 21 23 81 21 64 13 87 25 00 22 73 14 56 3000 23 90 24 29 16 19 11 87 25 50 17 00 12 46 26 78 17 85 13 08 23...

Page 21: ...64 16 69 21 80 18 17 17 05 23 34 19 45 17 30 32 20 22 01 20 01 16 73 22 67 20 61 17 10 24 27 22 06 17 35 3000 23 90 22 89 15 26 16 39 23 58 15 72 17 21 25 24 16 83 18 07 26 70 23 81 18 32 16 43 24 52...

Page 22: ...TSM 201707 21 7 Static Pressure Curve MTB1T 96C H WN1 MHB1T 96C H WN1 0 50 100 150 200 2500 3500 4500 5500 P Pa Q m3 h Hi Med Low 1472 2061 2650 3239 CFM 0 50 100 150 200 2500 3500 4500 5500 6500 P Pa...

Page 23: ...e Min Max MCA MFA kW FLA MTB1T 96CWN1 50 220 240V 198V 264V 10 20 0 6 8 MTB1T 96HWN1 50 220 240V 198V 264V 10 20 0 6 8 MHB1T 96CWN1 50 220 240V 198V 264V 10 20 1 1 8 MHB1T 96HWN1 50 220 240V 198V 264V...

Page 24: ...Midea R410A T3 50Hz Top discharge Series MCAC UTSM 201707 23 9 Sound Levels Model Noise level MTB1T 96CRN1 56 dB A MTB1T 96HRN1 56 dB A MHB1T 96CRN1 56 dB A MHB1T 96HRN1 56 dB A...

Page 25: ...al 1 Installation manual 1 Restriction assembly 1 Connect to system Water connective pipe 1 Connect to water drainage pipe Display board subassembly 1 Connect to control signal Protective sleeve for r...

Page 26: ...UTSM 201707 25 Floor standing Type 1 Features 26 2 Specifications 27 3 Dimensions Unit mm 29 4 Service Space 30 5 Refrigerant Circuit 31 6 Wiring Diagrams 32 7 Capacity Tables 34 8 Electric Character...

Page 27: ...and heating the air could attach long distance Available for wireless remote control and screen control Suit for hotel meeting room airport lounge etc public occasion use With auto restart function a...

Page 28: ...atchwell Quantity 1 1 Input Hi Med Lo W 600 500 437 600 500 437 Capacitor 25 F 450V 25 F 450V Speed Hi Med Lo r min 870 760 670 870 760 670 Indoor coil Number of rows 3 3 Tube pitch a row pitch b mm 2...

Page 29: ...as the accessory in indoor unit with inlet refrigerant pipe to change the diameter of liquid pipe to 9 52 When the length of the refrigerant pipe is more than 30m and less than 50m please connect the...

Page 30: ...Midea R410A T3 50Hz Top discharge Series MCAC UTSM 201707 29 3 Dimensions Unit mm MFA3T 96C H RN1...

Page 31: ...MCAC UTSM 201707 Midea R410A T3 50Hz Top discharge Series 30 4 Service Space...

Page 32: ...Midea R410A T3 50Hz Top discharge Series MCAC UTSM 201707 31 5 Refrigerant Circuit Cooling only MFA3T 96CRN1 Heat pump MFA3T 96HRN1...

Page 33: ...MCAC UTSM 201707 Midea R410A T3 50Hz Top discharge Series 32 6 Wiring Diagrams MFA3T 96CRN1...

Page 34: ...Midea R410A T3 50Hz Top discharge Series MCAC UTSM 201707 33 MFA3T 96HRN1...

Page 35: ...0 14 73 7 61 23 20 15 47 7 99 24 36 16 24 8 39 26 70 23 67 18 21 6 84 24 85 19 12 7 18 26 10 20 07 7 54 22 98 17 68 7 92 24 13 18 56 8 31 25 34 19 49 8 73 29 40 24 62 20 51 7 11 25 85 21 54 7 47 27 14...

Page 36: ...33 22 01 14 67 12 95 26 70 21 39 16 45 10 55 22 46 17 27 11 08 23 58 18 14 11 63 20 76 15 97 12 21 21 80 16 77 12 82 22 89 17 61 13 46 29 40 22 24 18 53 10 97 23 35 19 46 11 52 24 52 20 43 12 10 21 5...

Page 37: ...57 13 05 16 61 20 16 13 44 16 97 21 58 14 38 17 22 26 70 20 35 15 66 16 65 20 96 16 13 17 01 22 44 17 26 17 26 29 40 21 17 17 64 16 69 21 80 18 17 17 05 23 34 19 45 17 30 32 20 22 01 20 01 16 73 22 6...

Page 38: ...del Indoor Unit Power Supply IFM Hz Voltage Min Max MCA MFA KW FLA MFA3T 96CRN1 50 220 240V 198V 264V 3 55 20 0 3 2 84 MFA3T 96HRN1 50 220 240V 198V 264V 3 55 20 0 3 2 84 Note MCA Min Current Amps A M...

Page 39: ...MCAC UTSM 201707 Midea R410A T3 50Hz Top discharge Series 38 9 Sound Levels Model Noise level MFA3T 96CRN1 56 dB A MFA3T 96HRN1 56 dB A...

Page 40: ...UTSM 201707 39 10 Accessories Name Qty Shape Usage Owner s manual 1 Installation manual 1 Remote controller manual 1 Water connective pipe 1 Connect to water drainage pipe Remote controller 1 AAA bat...

Page 41: ...TSM 201707 Midea R410A T3 50Hz Top discharge Series 40 Part 3 Outdoor Unit 1 Specifications 41 2 Dimension Unit mm 43 3 Service Space 44 4 Wiring Diagrams 45 5 Electric Characteristics 47 6 Sound Leve...

Page 42: ...Brand Welling Yongan Welling Yongan Capacitor 25 F 450V 25 F 450V Motor Input 4 3 fan blades W 587 388 612 388 587 388 612 388 Speed 4 3 fan blades r min 1 230 870 1 180 790 1 230 870 1 180 790 Coil N...

Page 43: ...or is not more than 30m please connect the straight pipe as the accessory in outdoor unit with high pressure stop valve to change the diameter of liquid pipe to 9 52 When the length of the refrigerant...

Page 44: ...Midea R410A T3 50Hz Top discharge Series MCAC UTSM 201707 43 2 Dimension Unit mm MOVTA 96C H N1 R...

Page 45: ...rvice Space MOVTA 96C H N1 R Notes 1 In case any obstacles exist above the outdoor unit such obstacles must be 2000mm above the outdoor unit 2 If miscellaneous articles are piled around the outdoor un...

Page 46: ...Midea R410A T3 50Hz Top discharge Series MCAC UTSM 201707 45 4 Wiring Diagrams MOVTA 96CN1 R...

Page 47: ...MCAC UTSM 201707 Midea R410A T3 50Hz Top discharge Series 46 MOVTA 96HN1 R Note The middle joint XT4 only exists when the frequency of outdoor unit power is 50Hz...

Page 48: ...TOCA MFA MSC RLA KW FLA MOVTA 96CN1 R 50 380 415V 342V 440V 19 8 23 7 26 1 125 14 6 0 8 5 86 MOVTA 96CN1 R 50 380 415V 342V 440V 19 8 23 7 26 1 125 14 6 0 8 5 86 Note MCA Min Current Amps A TOCA Tota...

Page 49: ...MCAC UTSM 201707 Midea R410A T3 50Hz Top discharge Series 48 6 Sound Levels Front h H 1 m Note H h 1 2 Model Noise level MOVTA 96CN1 R 68 dB A MOVTA 96HN1 R 68 dB A Microphone...

Page 50: ...Indoor Units 52 3 Installation of Floor standing Type Indoor Units 56 4 Installation of Outdoor Units 58 5 Connection of Refrigerant Pipe 60 6 Heat Insulation of Pipe 68 7 Electric Connection 69 8 Du...

Page 51: ...uilding electric insulation must be performed and the installation must meet the relevant technical standards of electric devices The appliance must be installed 2 3m above floor The appliance shall n...

Page 52: ...upply voltage fluctuates seriously Inside a car or cabin Place like kitchen where oil permeates Place where strong electromagnetic waves exist Place where flammable gases or materials exist Place wher...

Page 53: ...er screws The screw material is high quality carbon steel whose surface is zinc plated or undergoes other anti rust treatment or stainless steel The treatment of the ceiling varies between buildings F...

Page 54: ...hang pipe and embed screw bolts When in steel beam and girder structure set and use supportive angle steel After install the indoor units use a hoisting device to hoist the indoor unit and align it w...

Page 55: ...ize see the indoor unit outline diagram Use M6 20 screws configured on site for connection All pipelines must be connected closely and soundly without leak of air The pipelines must be adiabatic and f...

Page 56: ...en the clapboard of indoor unit pour the water in to see whether it drains smoothly and whether there is water leakage After confirming that drainage is smoothly and there is no leakage wrap the drain...

Page 57: ...t on the floor after select a proper place for installation since the height of the unit casing is very high The right and left sides as well as rear can be fixed Unit mm Note Please be ware of the fo...

Page 58: ...and folds of the drain pipe should not exceed 2 Try to avoid bends to prevent trash accumulation Open the side panel of the indoor unit fill water inward and check whether water can be drained smoothl...

Page 59: ...he side of the outdoor unit For installation procedure see the relevant installation manual Use 4 steel ropes of a 6mm or bigger size to hoist the outdoor unit and convey into the room In order to pre...

Page 60: ...following shown picture leave an interval of 500mm between the outdoor units Snow protection facilities must be installed in the snowfall areas In case the snow protection facilities are incomplete f...

Page 61: ...front board first three pieces of M5 screw When the pipe is connected from the front side the pipe can be led out through the right front board When welding the refrigerant pipe in order to prevent i...

Page 62: ...m pipe length 30 L 50m 28 6mm pipe length 30 L 50m Notes The pipe joint for connecting pipes of different diameters is needed If the pipe length is not more than 30m please use the straight pipe as th...

Page 63: ...to the liquid line service port Braze the liquid line to the high pressure valve liquid valve at the outdoor unit Be sure to wrap the valve body with a wet rag Allow the nitrogen to continue flowing R...

Page 64: ...r cap finger tight then tighten an additional 1 12 turn 1 hex flat Cap must be replaced to prevent leaks Do not connect manifold gauges unless trouble is suspected Approximately 3 4 ounce of refrigera...

Page 65: ...intenance orifice nut of valve A Open the spools of valves A and B completely Tighten the square head cover of valves A and B completely Use refrigerant tank to expel air Screw up the pipe nuts at A B...

Page 66: ...mpletion of vacuuming tighten the low pressure handle of the manifold valve completely and stop the vacuum pump Keep extracting air for over 15 minutes Check whether the multi meter points at 1 0 10Pa...

Page 67: ...0 115kg Note Please check and record the replenished quantity of the air conditioner It is not necessary to replenish refrigerant unless the length of connective pipe over 5m Otherwise calculate the...

Page 68: ...B m3 according to the minimum volume Calculate out the refrigerant density A kg B m3 Density threshold 0 3kg m3 Measures against crossing of the refrigerant density threshold In order to keep the ref...

Page 69: ...at insulation materials Enough heat insulation materials should also be applied to the refrigerant joint and the pipe joint Note the heat insulation of drain pipe refer to the installation of indoor u...

Page 70: ...e State and set the Residual Current operated Circuit Breaker RCCB properly The power wire and the signal wire shall be laid out neatly and properly without mutual interference or contacting the conne...

Page 71: ...0 2 1 0mm 2 Cooling only Power supply wire The specification of power supply wire as follows Power supply wire of outdoor unit In this case the power cable is individually provides no power supply dev...

Page 72: ...main power supply Fuse A 20 10 70 50 Indoor unit power cable mm 2 includes grounded wire RVV 300 500 3 2 5mm 2 Outdoor unit power cable mm 2 includes grounded wire YCW 450 750 5 10mm 2 Connective wir...

Page 73: ...01707 Midea R410A T3 50Hz Top discharge Series 72 8 Duct Design Scheme Examples of construction and ventilation pipeline design scheme Flowering hidden series Construction and ventilation pipeline des...

Page 74: ...resistant materials Those materials other materials Those materials other shall not be applied 3 The heat insulation material must be glass wool 4 1 Install the unit at the air inlet so that the air f...

Page 75: ...ly model 9 1 The lengthwise adjustable model which diffuses air at a 360 angle 2 With the change of the cooling heating air flow the horizontal and vertical distance of the fan can be adjusted applica...

Page 76: ...ation pipes 2 When the noise pipe is connected with the hose the ventilation pipe tape must be applied otherwise with only adhesive tape the adhesion will be weakened due to change of temperature 1 It...

Page 77: ...ther the ground cables are connected correctly Check whether the pipe length and the refrigerant amount are recorded Check whether the supply voltage is equal to the rated voltage of the air condition...

Page 78: ...in pipes generate condensate due to loose wrapping Open the air inlet grille to check whether any penetration or leak of water occurs especially at the drain stopper Check whether any vibration or abn...

Page 79: ...6C H WN1 MFA3T 96C H RN1 Horizontal air deflector Adjust the vertical air flow Manual Vertical air deflector Adjust the horizontal air flow Auto Remote controller Control all modes of the unit within...

Page 80: ...is flashing in 2Hz If you keep it without adjustment operation within 3 seconds the system will confirm the mode Temperature adjustment key key For increase temperature Any time you press the key tem...

Page 81: ...COOL HEAT Fan Press MODE key the light of icon is on the selected mode s icon will flash after 3 seconds the light extinction while the status of selected mode icon is light on instead of flashing Po...

Page 82: ...the icon will light off For temperature display the shows temperature value the unit is C For protection and error display the first display for protection or for error the last display codes form to...

Page 83: ...he chapter Cooling Heating Supply Air Operation Procedure The indoor unit gives out white aerosol This phenomenon may occur when the indoor relative humidity is too high and the unit runs in the cooli...

Page 84: ...der to prevent frosting of the indoor heat exchanger the air conditioner shifts to air supply mode automatically and resumes to cooling mode in a short time When the room temperature decreases to the...

Page 85: ...eakage occurs The remote controller or wired controller fails Check the remote controller or wired controller Symptom Possible causes Way of handing The heating effect is poor The outdoor environment...

Page 86: ...unit keep starting up and shutting down frequently The refrigerant is excessive or deficient Detect leak and fill the refrigerant of a correct quantity Air or non condensable gas exists in the refrig...

Page 87: ...running because the set time has expired After a while the TIMING ON display disappears Check whether the time set on the time has expired When it comes to the set time of starting operation of the ai...

Page 88: ...sensor malfunction 4 Defrosting lamp flashing at 5Hz Condenser temperature sensor malfunction 5 Alarm lamp flashing at 5Hz Water level checking malfunction 6 Operation lamp and timer lamp flashing at...

Page 89: ...s heavy and difficult to clean replace the filter Do not replace the power cable without permission If the power cable is damaged specialized power cable must be used as substitute The foregoing opera...

Page 90: ...er supply Startup after a long period out of service Check the following issues Check whether the air inlet or outlet of the indoor unit and outdoor unit is blocked Remove foreign substance if any Che...

Page 91: ...MCAC UTSM 201707 Midea R410A T3 50Hz Top discharge Series 90 Part 5 Controller 1 Wireless Remote Controller 91 2 Wired Controller 98...

Page 92: ...f CPU Emitting Signal 2 0V Reaching Distance 8m when using 3 0 voltage it Gets 11m Environment Temperature Range 5 C 60 C Performance Features 1 Operating Mode COOL HEAT DRY FAN and AUTO 2 Timer Setti...

Page 93: ...ontrol will return to the initial settings 5 ECONOMIC RUNNING Button Push this button to go into the Energy Saving operation mode 6 LOCK Button Push this button to lock in all the current settings To...

Page 94: ...display area shows the settings of TIMER That is if only the starting time of operation is set it will display the TIMER ON If only the turning off time of operation is set it will display the TIMER O...

Page 95: ...n When the Air Conditioner is ready for use switch on the power and the OPERATION indicator lamp on the display panel of the indoor unit starts flashing Use the MODE select button to select AUTO Push...

Page 96: ...ts to operate in the DRY mode Push the ON OFF button again to stop this unit operation Note Due to the difference of the set temperature of the unit and the actual indoor temperature the Air Condition...

Page 97: ...ncel any former settings Push the TIMER button and the remote controller will show the last set time for START operation and the signal h will be shown on the display panel You are now ready to readju...

Page 98: ...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 5 Keep contr...

Page 99: ...ower Supply Voltage 5 0V DC Ambient Temperature Range 15 C 43 C Ambient Humidity Range RH40 RH90 Performance Features 1 Connect with indoor unit via the four ports of A B C and D 2 Set the mode throug...

Page 100: ...For the indoor unit with swinging function you can directly use the wireless remote controller to control swinging through the display panel of the indoor unit or use the swing button on the wired re...

Page 101: ...or 62 F 88 F Note The setting temperature cannot be adjusted under fan mode 6 Timer on and timer off setting Press the timer clock setting button then enter into the timer on setting status and screen...

Page 102: ...left button or right button to switch to minute position setting then the minute position will flash press and to adjust the minute value After finish the clock setting press the button or wait for 5...

Page 103: ...it can change to be 5 000 hours or 10 000 hours The setting methods refer to the installation manual 11 Swing function If the indoor unit supports swing function press the right button to adjust the a...

Page 104: ...stallation may lead to electric shock or fire Do not disassemble your air conditioner at will A random disassembly may cause abnormal operation or heating which may result in fire Do not install the u...

Page 105: ...ll Specification Only for reference Remarks 4 core shielded cable 1 RVVP 0 5mm2 4 The longest is 15m 86 Electrician box 1 Wiring tube Insulating sleeve and tightening screw 1 Notes to installation of...

Page 106: ...e sketch 3 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...

Page 107: ...firm The tightening torque range of screw is 0 8 1 2N m 8 12kgf cm 4 Wired controller back cover installation Use straight head screwdriver to insert into the buckling position in the bottom of wired...

Page 108: ...andard length from the electrical box screw bar to the wall Make sure when install the screw bar to the electric box screw bar make it as flat as the wall Use cross head screws to fix the wired contro...

Page 109: ...tty 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 remote controller while durin...

Page 110: ...s XY The first code X means the function class the second code Y means detailed configuration of this function Setting method Step1 Simultaneously press the mode button and fan speed button of the wir...

Page 111: ...3 4 0 Cooling only Heat pump selection Heat pump Default Cooling only 1 Indoor unit communication address setting Yes Default None 2 Power off memory Yes Default None 3 Filter cleaning reminding Cance...

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