Midea MFA-76CRN1 Technical Manual Download Page 53

Page: 53 / 166

R410A Tropical Split Type Technical Manual

Troubleshooting

Duct Type

Operation lamp flashes:

Yes

All lamps flashing at 5Hz

Judge 1: The PRO terminal on PCB of indoor unit without connecting to grounding wire

Validate: Check whether the PRO terminal on PCB of indoor
unit without connected to grounding wire.

Connect it to grounding wire.

Judge 2: Optical coupler on PCB malfunction

Validate: Check whether the Optical coupler is normal.

Replace optical coupler

Replace indoor PCB.

Summary of Contents for MFA-76CRN1

Page 1: ...R410A Tropical Split Type AC Technical Manual Content Indoor Unit 1 Content Part 1 General Information 2 Part 2 Indoor Units 6 Part 3 Outdoor Units 88 Part 4 Installation 120 Part 5 Control 154...

Page 2: ...General Information R410A Tropical Split Type AC Technical Manual General Information 2 Part 1 General Information 1 Model Names of Indoor Outdoor Units 3 2 External Appearance 4 3 Nomenclature 5...

Page 3: ...C 380 400V 3N 50Hz 35 120 MTA 150CRN1 MOV 76CN1 C 2 380 415V 3N 50Hz 44 150 High static pressure duct type MHB 76CRN1 MOV 76CN1 C 22 76 MHB 96CRN1 MOV 96CN1 C 28 96 1 2 Model Names of Units with Cool...

Page 4: ...Manual General Information 4 2 External Appearance 2 1 Indoor Units MTA 76C H RN1 MTA 96C H RN1 MFA 76C H RN1 MFA 96C H RN1 MTA 120CRN1 MTA 120HRN1 MTA 150CRN1 2 2 Outdoor Unit MOV 76C H N1 C MOV 96C...

Page 5: ...Controller Function Code C Cooling H Cooling and Heating Cooling Capacity 76 kBtu h Product Series A 1st time design B 2nd time design Indoor Units T Duct type F Floor standing type H High static pre...

Page 6: ...Indoor Units R410A Tropical Split Type Technical Manual Indoor Units 6 Part 2 Indoor Units Duct Type 7 Floor standing Type 58...

Page 7: ...Duct Type 1 Features 8 2 Specifications 9 3 Dimensions 12 4 Service Space 13 5 Piping Diagrams 15 6 Wiring Diagrams 15 7 Capacity Table 20 8 Static Pressure 35 9 Electric Characteristics 37 10 Sound L...

Page 8: ...installation 1 Several diffusers branch off from an indoor unit adjusting the room temperature which makes many rooms to be air conditioned with only one indoor unit 2 All models feature thin design...

Page 9: ...Single Direct Single Direct Single Direct Single Motor input No W 446 2 446 2 725 2 725 2 Motor speed rpm 877 877 1136 1136 Coil Type Copper tube and aluminum fin Copper tube and aluminum fin Tube si...

Page 10: ...Single Direct Single Direct Single Direct Single Motor input No W 498 3 498 3 630 3 630 3 Motor speed rpm 860 860 1202 1202 Coil Type Copper tube and aluminum fin Copper tube and aluminum fin Tube siz...

Page 11: ...rect Single Direct Single Motor input No W 663 2 663 2 788 2 788 2 Motor speed rpm 1022 871 758 1022 871 758 1135 983 845 1135 983 845 Coil Type Copper tube and aluminum fin Copper tube and aluminum f...

Page 12: ...r outlets Air inlet side C A B D W F H E Model A mm B mm C mm E mm F mm W mm H mm D mm MTA 76CRN1 840 800 1180 300 165 1350 450 760 MTA 76HRN1 MTA 96CRN1 840 800 1180 300 165 1350 450 760 MTA 96HRN1 M...

Page 13: ...Manual Dimensions Duct Type 13 3 2 Duct type units with three air outlets Air inlet side C B D Model B mm C mm E mm F mm W mm H mm D mm MTA 120CRN1 794 5 1895 330 180 1970 668 860 MTA 120HRN1 MTA 150C...

Page 14: ...Type Technical Manual Duct Type 14 4 Service Space Electric control box Inspection hole 600m m 500m m Inspection hole H Top view Side view Inspection Canvas adapter Muffle Air outlet Air inlet Air fil...

Page 15: ...sor Liquid gas seperator Outdoor heat exchanger Stop valve Stop valve Indoor unit Check valve LP Switch T4 T2 T3 Cooling Indoor heat exchanger 5 2 Cooling and heating MTA 76HRN1 MTA 96HRN1 MTA 120HRN1...

Page 16: ...AIN CONTROL BOARD WHITE GRAY WHITE GRAY CN20 CN7 CN3 CN2 CN1 CN8 CN11 CN10 CN15 TO WIRE CONTROLLER RL1 RL2 RL3 BLUE RED BROWN BROWN BROWN BROWN BROWN BROWN YELLOW BLACK BLACK RED BLUE YELLOW Y G RED W...

Page 17: ...MAIN CONTROL BOARD WHITE GRAY WHITE GRAY CN20 CN7 CN3 CN2 CN1 CN8 CN11 CN10 CN15 TO WIRE CONTROLLER RL1 RL2 RL3 BLUE RED BROWN BROWN BROWN BROWN BROWN BROWN BLUE YELLOW BLACK BLACK RED RED BLUE BLUE...

Page 18: ...WHITE GRAY WHITE GRAY CN20 CN7 CN3 CN2 CN1 CN8 CN11 CN10 CN15 TO WIRE CONTROLLER RL1 RL2 RL3 BLUE RED BROWN BROWN BROWN BROWN BROWN BROWN YELLOW BLACK RED BLUE YELLOW Y G WHITE RED BLUE BLUE BLUE N L...

Page 19: ...CONTROL BOARD WHITE GRAY WHITE GRAY CN20 CN7 CN3 CN2 CN1 CN8 CN11 CN10 CN15 TO WIRE CONTROLLER RL1 RL2 RL3 BLUE RED BROWN BROWN BROWN BROWN BROWN BROWN BLUE YELLOW BLACK BLACK RED RED BLUE BLUE YELLOW...

Page 20: ...4 6 80 23 5 19 7 7 00 24 9 15 2 7 13 20 5 20 1 7 23 22 2 18 7 7 46 23 6 14 4 7 60 32 2 22 8 21 7 6 81 23 9 22 2 7 01 25 4 18 9 7 15 20 9 20 9 7 25 22 7 21 0 7 47 24 0 17 9 7 62 2500 23 9 21 1 18 3 7 0...

Page 21: ...0 16 4 8 59 17 4 17 4 8 39 19 0 17 6 8 65 20 2 15 1 8 90 17 1 17 1 8 77 18 5 17 1 9 14 19 6 14 6 9 39 2500 23 9 18 4 16 9 7 84 20 0 12 5 8 23 21 2 5 5 8 23 16 9 15 5 8 57 18 4 11 5 8 83 19 6 5 1 9 08...

Page 22: ...5 6 82 24 6 15 0 6 95 20 2 19 8 7 05 21 9 18 4 7 28 23 3 14 2 7 42 32 2 22 5 21 4 6 63 23 6 21 9 6 83 25 1 18 7 6 96 20 6 20 6 7 07 22 4 20 7 7 30 23 7 17 7 7 44 2500 23 9 20 8 18 1 6 82 22 7 14 2 7...

Page 23: ...21 9 16 3 8 66 17 3 17 3 8 46 18 9 17 5 8 72 20 1 15 0 8 97 16 8 16 8 9 02 18 1 16 8 9 39 19 3 14 4 9 64 2500 23 9 18 3 16 8 7 91 19 8 12 4 8 30 21 1 5 5 8 30 16 8 15 4 8 64 18 3 11 4 8 90 19 5 5 0 9...

Page 24: ...8 94 31 0 18 9 9 07 26 6 26 1 9 17 28 4 23 8 9 40 29 7 18 1 9 54 32 2 29 2 27 9 8 76 30 2 27 9 8 96 31 6 23 6 9 10 27 2 27 2 9 20 28 9 26 8 9 43 30 3 22 6 9 57 3000 23 9 26 9 23 4 8 94 28 9 18 1 9 27...

Page 25: ...0 20 1 11 31 22 4 22 4 11 11 24 0 22 2 11 37 25 2 18 8 11 62 21 9 21 9 11 71 23 3 21 5 12 07 24 4 18 2 12 32 3000 23 9 23 1 21 2 11 07 24 7 15 4 11 46 25 9 6 7 11 46 21 6 19 8 11 26 23 1 14 4 11 52 24...

Page 26: ...8 91 30 5 18 6 9 04 26 2 25 7 9 14 27 9 23 4 9 37 29 2 17 8 9 51 32 2 28 8 27 4 8 73 29 7 27 5 8 93 31 2 23 3 9 07 26 7 26 7 9 17 28 5 26 3 9 40 29 8 22 2 9 54 3000 23 9 26 4 23 0 8 91 28 5 17 8 9 24...

Page 27: ...0 20 1 11 51 22 4 22 4 11 31 24 0 22 2 11 57 25 2 18 8 11 82 21 3 21 3 11 81 22 6 20 9 12 17 23 8 17 7 12 42 3000 23 9 23 1 21 2 11 27 24 6 15 4 11 66 25 9 6 7 11 66 21 6 19 8 11 46 23 1 14 4 11 72 24...

Page 28: ...8 0 23 2 11 58 33 7 33 0 11 68 35 4 29 7 11 91 36 7 22 4 12 05 32 2 36 6 34 9 11 28 37 4 34 6 11 48 38 8 29 0 11 61 34 3 34 3 11 71 36 1 33 4 11 94 37 5 28 0 12 08 3750 23 9 33 5 29 2 11 43 35 7 22 3...

Page 29: ...86 33 7 25 1 13 01 29 1 29 1 12 81 30 7 28 4 13 08 31 9 23 8 13 33 28 8 28 8 14 32 30 2 27 9 14 68 31 3 23 4 3750 23 9 23 9 29 4 27 0 12 23 31 0 19 4 12 62 32 2 8 4 12 62 27 9 25 6 12 96 29 4 18 4 13...

Page 30: ...8 23 1 11 46 33 5 32 8 11 56 35 2 29 6 11 79 36 5 22 3 11 93 32 2 36 4 34 7 11 16 37 1 34 4 11 36 38 6 28 8 11 49 34 1 34 1 11 59 35 9 33 2 11 82 37 2 27 8 11 96 3750 23 9 33 3 29 0 11 31 35 5 22 2 1...

Page 31: ...27 33 4 24 9 13 42 28 8 28 8 13 22 30 3 28 1 13 48 31 6 23 6 13 73 28 4 28 4 15 03 29 8 27 6 15 40 30 9 23 1 3750 23 9 23 9 29 1 26 7 12 63 30 6 19 2 13 02 31 9 8 3 13 02 27 6 25 3 13 36 29 1 18 2 13...

Page 32: ...7 5 29 0 14 81 43 1 42 3 14 91 44 9 37 7 15 03 46 2 28 2 15 28 32 2 46 6 44 4 14 51 47 0 43 5 14 71 48 5 36 2 14 84 44 0 44 0 14 94 45 8 42 4 15 05 47 1 35 2 15 32 4500 23 9 42 5 37 0 14 64 44 8 28 0...

Page 33: ...31 5 17 79 37 7 37 7 17 59 39 2 36 3 17 85 40 5 30 2 18 10 37 2 37 2 18 77 38 5 35 7 19 14 39 7 29 6 19 39 4500 23 9 37 5 34 4 16 97 39 0 24 4 17 36 40 3 10 4 17 36 36 0 33 0 17 70 37 5 23 4 17 96 38...

Page 34: ...34...

Page 35: ...R410A Tropical Split Type Technical Manual Static Pressure Duct Type 35 8 Air flow rate Static pressure curve MTA 76 H CRN1 MTA 96 H CRN1 MTA 120 H CRN1...

Page 36: ...Static Pressure Tropical Split Type Technical Manual Duct Type 36 MTA 150 H CRN1 MHB 76 H CRN1 MHB 96 H CRN1...

Page 37: ...N1 50 220 240 198 254 11 21 2 005 8 97 MHB 96HRN1 50 220 240 198 254 11 21 2 005 8 97 Note MCA Min Current Amps A MFA Max Fuse Amps A IFM Indoor Fan Motor kW Fan Motor Rated Output kW FLA Full Load Am...

Page 38: ...Type 38 10 Sound Levels Concealed Duct Type Suction Discharge Microphone 1 4m Duct Unit Number Model Noise level under three speeds of fan dB A 1 MTA 76C H RN1 54 2 MTA 96C H RN1 55 3 MTA 120C H RN1...

Page 39: ...2301300133 7 Air outlet ass y 2 201285000612 17 Base ass y 1 201285000667 8 Remote controller 1 203355090107 18 evaporator ass y 1 201570990079 9 Display board ass y 1 203342090051 18 1 evaporator inp...

Page 40: ...33 7 Air outlet ass y 2 201285000612 17 Base ass y 1 201285000667 8 Remote controller 1 203355090100 18 evaporator ass y 1 201570990079 9 Display board ass y 1 203342090051 18 1 evaporator inputing pi...

Page 41: ...tlet ass y 2 201285000612 17 Base ass y 1 201285000667 8 Remote controller 1 203355090107 18 Evaporator parts 1 201570990077 9 Display board ass y 1 203342090051 18 1 Enter the evaporator tube assembl...

Page 42: ...tlet ass y 2 201285000612 17 Base ass y 1 201285000667 8 Remote controller 1 203355090100 18 Evaporator parts 1 201570990077 9 Display board ass y 1 203342090051 18 1 Enter the evaporator tube assembl...

Page 43: ...01270990001 13 Drainage pan ass y 1 201252600013 4 Evaporator left clapboard 2 201252600012 14 Base ass y 1 201286910002 5 Left clapboard ass y 1 201270990002 15 Drainage pan ass y 1 201252600023 6 As...

Page 44: ...inage pan ass y 1 201252600013 4 Evaporator left clapboard 2 201252600012 14 Base ass y 1 201286910002 5 Left clapboard ass y 1 201270990002 15 Drainage pan ass y 1 201252600023 6 Asynchronous motor 3...

Page 45: ...104 13 Top cover ass y 1 201286900504 1 7 Output pipe ass y 2 201686900500 14 Drainage pan ass y 1 201252600013 2 Pipe clamp board ass y 2 201286900505 15 Base ass y 1 201286910002 3 Clamp board ass y...

Page 46: ...r outlet ass y 2 201285000612 17 Base ass y 1 201285000667 8 Remote controller 1 203355090107 18 evaporator ass y 1 201570990079 9 Display board ass y 1 203342090051 18 1 evaporator inputing pipe ass...

Page 47: ...r outlet ass y 2 201285000612 17 Base ass y 1 201285000667 8 Remote controller 1 203355090100 18 evaporator ass y 1 201570990079 9 Display board ass y 1 203342090051 18 1 evaporator inputing pipe ass...

Page 48: ...outlet ass y 2 201285000612 17 Base ass y 1 201285000667 8 Remote controller 1 203355090107 18 Evaporator parts 1 201570990077 9 Display board ass y 1 203342090051 18 1 Enter the evaporator tube asse...

Page 49: ...outlet ass y 2 201285000612 17 Base ass y 1 201285000667 8 Remote controller 1 203355090100 18 Evaporator parts 1 201570990077 9 Display board ass y 1 203342090051 18 1 Enter the evaporator tube asse...

Page 50: ...level full error Manual reset Note OPT Light operation light TME Light timer light DEF Light defrosting light the light flashing 13 1 Malfunctions of air conditioner If any of the following malfunctio...

Page 51: ...erant Air or non condensable gas exists in the refrigerant system Vacuum the system and charge refrigerant again Compressor fails Repair or replace the compressor The voltage is too high or too low In...

Page 52: ...eplace the batteries The ON OFF lamp extinguishes Check whether the time set on the timer has expired Restart the unit The TIMER ON lamp extinguishes Check whether the time set on the timer has expire...

Page 53: ...The PRO terminal on PCB of indoor unit without connecting to grounding wire Validate Check whether the PRO terminal on PCB of indoor unit without connected to grounding wire Connect it to grounding w...

Page 54: ...z Room temperature sensor malfunction Judge 1 Check the room temperature sensor Is break off Connects it well Judge 2 Check the room temperature sensor is abnormal Validate Check whether the resistanc...

Page 55: ...ensor Operation lamp flashing at 5Hz Evaporate temperature sensor is abnormal Judge 1 Check evaporate temperature sensor is break off Judge 2 Evaporate temperature sensor is abnormal Validate Check wh...

Page 56: ...ser temperature sensor malfunction Judge 1 Check condenser temperature sensor is break off Replace temperature sensor Yes Judge 2 Condenser temperature sensor is abnormal No Validate Check whether the...

Page 57: ...anual 1 Installation manual 1 Remote controller manual 1 Water pipe 1 Connect to water drainage pipe Display board subassembly 1 Connect to control signal Protective sleeve for refrigerant inlet and o...

Page 58: ...Type 58 Floor standing Type 1 Features 59 2 Specifications 60 3 Dimensions 61 4 Service Space 62 5 Refrigerant Cycle Diagram 63 6 Wiring Diagrams 64 7 Capacity Tables 66 8 Electric Characteristics 75...

Page 59: ...refined 2 High capacity of cooling heating efficient and energy saving 3 Adopt advanced and high efficient scroll compressor wide angle and long distance air supply 4 Remote control standard screen c...

Page 60: ...r step Direct Single Direct Single Direct Single Direct Single Motor input No W 590 590 590 590 Motor speed rpm 870 870 870 870 Coil Type Copper tube and aluminum fin Copper tube and aluminum fin Tube...

Page 61: ...plit Type Technical Manual Service Space Floor standing Type 61 3 Dimensions A B Foot screw W D H Model A mm B mm W mm H mm D mm MFA 76CRN1 960 216 1200 1860 420 MFA 76HRN1 MFA 96CRN1 960 216 1200 186...

Page 62: ...Specifications R410A Tropical Split Type Technical Manual Floor standing Type 62 4 Service Space Front view 10 cm 10 cm Rear 30 cm No obstacle in front of it Top view...

Page 63: ...Liquid gas seperator Outdoor heat exchanger Stop valve Stop valve Indoor unit Check valve LP Switch T4 T2 T3 Cooling Indoor heat exchanger 5 2 Cooling and heating MFA 76HR MFA 96HR Discharge temp sen...

Page 64: ...Type 64 6 Wiring Diagrams 6 1 MFA 76CR MFA 96CR Item Name Item Name Item Name CAP1 Fan capacitance RT1 Room temp sensor XS1 3 Connector plugs FAN Indoor fan RT2 Pipe temp sensor SYN Swing motor XT1 3...

Page 65: ...standing Type 65 6 2 MFA 76HR MFA 96HR Item Name Item Name Item Name CAP1 Fan capacitance RT1 Room temp sensor XS1 3 Connector plugs FAN Indoor fan RT2 Pipe temp sensor SYN Swing motor XT1 3 Connector...

Page 66: ...6 68 22 7 13 1 6 88 24 1 5 7 7 01 19 9 16 7 7 11 21 6 12 5 7 34 22 8 5 4 7 48 26 7 21 4 19 8 6 70 23 2 16 5 6 90 24 6 10 8 7 03 20 3 18 8 7 13 22 0 15 6 7 36 23 3 10 2 7 50 29 4 22 1 21 7 6 72 23 7 1...

Page 67: ...1 4 9 4 8 68 17 0 15 7 8 48 18 5 13 1 8 74 19 7 8 6 8 99 16 1 14 9 9 05 17 4 12 3 9 41 18 5 8 1 9 66 29 4 18 8 18 5 8 31 20 5 17 2 8 55 21 8 13 3 8 70 17 3 17 0 8 50 18 8 15 8 8 76 20 1 12 2 9 01 16 4...

Page 68: ...6 78 23 6 5 6 6 91 19 4 16 3 7 01 21 1 12 2 7 24 22 4 5 3 7 38 26 7 20 9 19 4 6 60 22 7 16 1 6 80 24 1 10 6 6 93 19 8 18 3 7 03 21 5 15 2 7 26 22 8 10 0 7 40 29 4 21 6 21 2 6 62 23 2 19 5 6 82 24 6 1...

Page 69: ...9 2 8 77 16 6 15 3 8 57 18 1 12 8 8 83 19 3 8 4 9 08 15 7 14 5 9 38 17 0 12 0 9 74 18 1 7 9 9 99 29 4 18 4 18 1 8 40 20 0 16 8 8 64 21 4 13 0 8 79 16 9 16 6 8 59 18 4 15 5 8 85 19 6 12 0 9 10 16 0 15...

Page 70: ...9 11 30 0 7 1 9 24 25 8 21 7 9 34 27 5 15 9 9 48 28 7 6 8 9 71 26 7 27 4 25 4 8 93 29 2 20 7 9 13 30 6 13 4 9 26 26 3 24 4 9 36 28 0 19 9 9 51 29 3 12 9 9 73 29 4 28 4 27 8 8 95 29 8 25 0 9 15 31 2 1...

Page 71: ...23 5 5 5 12 43 26 7 23 4 21 6 10 63 25 0 17 7 10 87 26 3 11 5 11 02 21 9 20 2 10 82 23 4 16 6 11 08 24 6 10 8 11 33 21 6 20 0 11 85 22 9 16 2 12 21 24 0 10 5 12 46 29 4 23 8 23 4 10 66 25 4 21 4 10 90...

Page 72: ...8 88 29 5 7 0 9 01 25 3 21 3 9 11 27 0 15 6 9 34 28 2 6 7 9 48 26 7 26 9 24 9 8 70 28 7 20 4 8 90 30 1 13 2 9 03 25 8 23 9 9 13 27 5 19 5 9 36 28 8 12 6 9 50 29 4 27 8 27 3 8 72 29 3 24 6 8 92 30 7 1...

Page 73: ...2 11 18 21 2 19 7 10 98 22 7 16 1 11 24 23 9 10 5 11 49 21 3 19 7 12 06 22 6 16 0 12 42 23 7 10 4 12 67 29 4 23 2 22 7 10 82 24 8 20 9 11 06 26 2 15 9 11 21 21 7 21 2 11 01 23 2 19 5 11 27 24 4 14 9 1...

Page 74: ...74...

Page 75: ...door Fan Motor Model Outdoor Unit Power Supply Compressor OFM Hz Voltage Min Max MCA TOCA MFA MSC RLA KW FLA MOV 76CN1 C 50 380 415 342 438 17 5 18 27 48 2 6 3 2 0 573 2 613 MOV 76HN1 C 50 380 415 342...

Page 76: ...ound Levels Tropical Split Type Technical Manual Floor standing Type 76 9 Sound Levels 1m Microphone 1m Unit Number Model Noise level under three speeds of fan dB A 1 MFA 76C H RN1 55 2 MFA 96 H RN1 5...

Page 77: ...R410A Tropical Split Type Technical Manual Exploded View Floor standing Type 77 10 Exploded View 10 1 MFA 76CRN1...

Page 78: ...Component II output tube evaporator 1 201643990026 16 Louver ass y 5 201286900029 37 Side board ass y 1 201286900024 17 Sleeve 10 202786900002 38 Sealed board ass y 1 201286900048 18 Grille 12 2011405...

Page 79: ...R410A Tropical Split Type Technical Manual Exploded View Floor standing Type 79 10 2 MFA 76HRN1...

Page 80: ...Component II output tube evaporator 1 201643990026 16 Louver ass y 5 201286900029 37 Side board ass y 1 201286900024 17 Sleeve 10 202786900002 38 Sealed board ass y 1 201286900048 18 Grille 12 2011405...

Page 81: ...R410A Tropical Split Type Technical Manual Exploded View Floor standing Type 81 10 3 MFA 96CRN1...

Page 82: ...0026 15 Supporting board ass y 2 201286900003 37 Side board ass y 1 201286900024 16 Louver ass y 5 201286900029 38 Sealed board ass y 1 201286900048 17 Sleeve 10 202786900002 39 Filter bar 2 201286900...

Page 83: ...R410A Tropical Split Type Technical Manual Exploded View Floor standing Type 83 10 4 MFA 96HRN1...

Page 84: ...0026 15 Supporting board ass y 2 201286900003 37 Side board ass y 1 201286900024 16 Louver ass y 5 201286900029 38 Sealed board ass y 1 201286900048 17 Sleeve 10 202786900002 39 Filter bar 2 201286900...

Page 85: ...11 Troubleshooting Type Code Remarks EEPROM error E0 Manual reset Room temp sensor error E1 Manual reset Evaporator temp sensor error E2 Manual reset Evaporator temp too low protection in cooling mod...

Page 86: ...temperature sensor T1 Judge 1 Whether the indoor temperature sensor T1 is break off Yes Connects it well No Judge 2 Whether the indoor temperature sensor T1 is malfunction Validate Check whether the...

Page 87: ...t of indoor temperature sensor T2 Judge 1 Whether the indoor temperature sensor T2 is break off Yes Connects it well No Judge 2 Whether the indoor temperature sensor T2 is malfunction Validate Check w...

Page 88: ...er the evaporator temperature sensor T2 is break off Connect it well Yes No Judge 2 Whether the evaporator temperature sensor is malfunction Validate Check whether the resistance of the temperature se...

Page 89: ...r the evaporator temperature sensor T2 is break off Connects it well Yes No Judge 2 Whether the evaporator temperature sensor is malfunction Validate Check whether the resistance of the temperature se...

Page 90: ...standing Type 90 12 Accessories Name Qty Shape Usage Owner s manual 1 Installation manual 1 Remote controller manual 1 Water pipe 1 Connect to water drainage pipe Remote controller 1 Remote controlle...

Page 91: ......

Page 92: ...echnical Manual Outdoor Units 88 Part 3 Outdoor Units 1 Specifications 89 2 Dimension 91 3 Service Space 92 4 Wiring Diagrams 94 5 Electric Characteristics 97 6 Operation Limits 98 7 Sound Levels 99 8...

Page 93: ...1250 1220 1250 1220 Coil Type Copper tube and aluminum fin Copper tube and aluminum fin Tube size mm 7 94 7 94 7 7 No of rows 2 2 3 3 Fin per inch FPI 18 18 19 19 Length height mm 2185 880 2185 880 2...

Page 94: ...e Copper tube and aluminum fin Tube size mm 7 7 No of rows 3 3 Fin per inch FPI 19 19 Length height mm 1376 880 1376 880 Refrigerant piping Liquid side Gas side mm 12 7 28 6 12 7 28 6 Max pipe length...

Page 95: ...R410A Tropical Split Type Technical Manual Dimensions Outdoor Units 91 2 Dimension 2 1 MOV 76CN1 C MOV 76HN1 C MOV 96CN1 C MOV 96HN1 C MOV 120HN1 C MOV 120CN1 C Unit mm...

Page 96: ...HN1 C MOV 120HN1 C MOV 120CN1 C Air outlet Air inlet Air inlet 1000 mm 1000 mm 500 mm 1000 mm 1000 mm Note 1 In case any obstacles exist above the outdoor unit such obstacles must be 2000mm above the...

Page 97: ...R410A Tropical Split Type Technical Manual Dimensions Outdoor Units 93 Foundation of the outdoor unit 757mm 671m m 10HP 15 20 rectangular hole 500 mm 500 mm M12 foundation bolt 4 screws for 1 unit...

Page 98: ...detector RT4 Room temp sensor SW1 3 Switch CAP1 2 Fan capacitance XT1 2 4 way terminal XS1 5 XP1 5 Connectors C1 Filter capacitor S V 4 way valve XT3 3 way terminal L PRO A Low pressure switch KM1 2...

Page 99: ...RT4 Room temp sensor SW1 3 Switch CAP1 2 Fan capacitance XT1 2 4 way terminal XS1 5 XP1 5 Connectors C1 3 Filter capacitor S V 4 way valve XT3 3 way terminal L PRO A Low pressure switch KM1 2 Relay KM...

Page 100: ...96...

Page 101: ...342V 438V 17 5 18 27 48 2 6 3 2 0 573 2 613 MOV 96C C 50 380 415V 342V 438V 20 21 31 5 53 2 8 2 1 373 6 26 MOV 96H C 50 380 415V 342V 438V 20 21 31 5 53 2 8 2 1 373 6 26 MOV 120C C 50 380 400V 342V 44...

Page 102: ...re range for unit operation 3 7 24 Outdoor air temperature Indoor air temperature Heating Standard operation 17 Outdoor air temperature Indoor air temperature Cooling Standardoperation 30 15 52 15 Ite...

Page 103: ...lit Type Technical Manual Sound Levels Outdoor Units 99 7 Sound Levels Standard of testing F r o n t h H 1 m Note H h 1 2 Unit Number Model Noise level dB A 1 MOV 76C H N1 C 63 2 MOV 96C H N1 C 64 3 M...

Page 104: ...Exploded View R410A Tropical Split Type Technical Manual 104 8 Exploded View 8 1 MOV 76CN1 C...

Page 105: ...201275990063 19 Before the column 1 201275990069 10 Under electronic control box mounting plate 1 201275990061 20 front left pillar ass y 1 201275990095 11 Chassis Parts 1 201275990097 21 Electronic c...

Page 106: ...Exploded View R410A Tropical Split Type Technical Manual 106 8 2 MOV 76HN1 C...

Page 107: ...0281 6 Axial fan 1 201200300014 16 Axial fan 1 201200300035 7 Handle 2 201148700003 17 The partition 1 201275990066 8 After the column about 2 201275990068 18 Left panel 1 201275990064 9 Right front p...

Page 108: ...Exploded View R410A Tropical Split Type Technical Manual 108 8 3 MOV 96CN1 C...

Page 109: ...201275990063 20 Components before the left column 1 201275990104 10 Under electronic control box mounting plate 1 201275990061 21 Electronic control box cover 1 201275990065 11 Chassis Parts 1 2012759...

Page 110: ...Exploded View R410A Tropical Split Type Technical Manual 110 8 4 MOV 96HN1 C...

Page 111: ...Axial fan 1 201200300035 6 Axial fan 1 201200300014 17 The partition 1 201275990066 7 Handle 2 201148700003 18 Left panel 1 201275990064 8 After the column about 2 201275990068 19 Before the column 1...

Page 112: ...Exploded View R410A Tropical Split Type Technical Manual 112 8 5 MOV 120CN1 C...

Page 113: ...75990118 22 7 Wire joint 1 202301450110 11 Top mounting plate of electronic control box 1 201275990080 22 8 Wire joint 1 202301450121 12 Front right column 1 201275990116 22 9 Wire joint 7 20230145012...

Page 114: ...Exploded View R410A Tropical Split Type Technical Manual 114 8 6 MOV 120HN1 C...

Page 115: ...n 1 201275990116 22 9 Wire joint 7 202301450122 13 Induction motor 2 202400400456 22 10 Wire joint 1 202301450130 14 Axial fan 1 201200300014 22 11 Three phase power protection devices 1 202301600518...

Page 116: ...ual reset Outdoor condenser temp sensor error Manual reset Outdoor ambient temp sensor error Manual reset Protection of low pressure Auto reset Protection of high pressure Auto reset Protection of ove...

Page 117: ...ction low pressure protection Please refer to the following Fault of T3A or T3B Judge 1 Whether the sensor is break off Connects it well Yes Judge 2 Whether the sensor is malfunction Validate Short co...

Page 118: ...n normally Yes Replace high pressure switch No Check whether the refrigerant system is ok Replace outdoor PCB No Judge 3 Check whether the outdoor ambient temperature is too high Yes Stop the unit No...

Page 119: ...low Yes Stop the unit No Judge 4 The refrigerant of the system is leakage Yes Validate Connect the pressure gauge to the gauge joint of the system check whether the pressure is lower than 0 15MPa Leak...

Page 120: ...lation 1 Note 121 2 Installation of Indoor Units 122 3 Installation of Outdoor Units 127 4 Heat Insulation of the Pipe 136 5 Installation of Connective Pipe 137 6 Installation of Drain Pipe 143 7 Elec...

Page 121: ...Seaside where the air contains much salt Hot ring area where corrosive gases exist e g sulfide gas Factories where the supply voltage fluctuates seriously Inside a car or cabin Place like kitchen wher...

Page 122: ...0 Pendant Bolts Or Ground Bolts Fig 3 Fig 3 1 Use f10 or bigger screws The screw material is high quality carbon steel whose surface is zinc plated or undergoes other rustproof treatment or stainless...

Page 123: ...icks across the beams and set pendant bolts Fig 4 Fig 4 B New concrete roughcast Use embedded bolts embedded pulling plugs and embedded stick harness Fig 5 Fig 5 C New concrete roughcast Set it with e...

Page 124: ...t pipe Install a filter at an easy to maintain place such as intake pipe Otherwise the duct will gather on the air heat exchanger and lead to fault and water leak of the air conditioner In order to su...

Page 125: ...s Ensure enough space required for installation and maintenance Fig 10and Fig 11 Fig 10 Fig 11 For anti fall down please conduct the follow measures See Fig 12 to fix the feet on the floor after selec...

Page 126: ...ic connection Uncover the screw cap in the air intake panel and then lessen the screws Take off the air intake panel ensure which place secure enough will not make risk to the other people Fig 13 NOTE...

Page 127: ...urrently 5 Refrigerant replenishment If the pipe is longer than the reference pipe the refrigerant replenishment quantity for each outdoor unit should be calculated through the formula obtained accord...

Page 128: ...at the side of the outdoor unit Ensure enough space for installation and maintenance Fig 14 and Fig 15 Air outlet Air inlet Air inlet Fig 14 1000 mm 1000 mm 500 mm 1000 mm 1000 mm Fig 15 NOTE 1 In ca...

Page 129: ...oor Units Installation 129 As shown in Fig 16 leave an interval of 500mm between the outdoor units 500 mm 500 mm M12 foundation bolt 4 screws for 1 unit Fig 16 The distance of the foundation bolt is s...

Page 130: ...hion for use in the transport after finishing the transport Fig 18 Fork truck can be used for conveying Steel wire Guard board Base and bracket Holes for fork truck Fig 18 3 4 Snow protection faciliti...

Page 131: ...nt left lower side or the bottom notch of the outdoor unit When the pipe is connected from the front side the pipe can be led out through the pipe wire panel In case the pipe is connected from the bot...

Page 132: ...C 25 9 52 MOV 96HN1 C 25 9 52 MOV 120CN1 C 28 6 12 7 MOV 120HN1 C 28 6 12 7 2 Allowed length of refrigerant pipe and height difference Fig 22 Outdoor unit Max pipe length L 50m Height difference betw...

Page 133: ...hnical Manual Installation of Outdoor Units Installation 133 3 Connection between indoor unit and outdoor unit Fig 23 Signal wire Gas line Liquid line 76000 96000 120000 Btu h Signal wire Gas line Liq...

Page 134: ...ters may come into the pipe in the process of installing the refrigerant pipe Be sure to blow them off with nitrogen before connecting the pipe to the outdoor units Use high pressure nitrogen to clean...

Page 135: ...me In case multiple systems are set in order to identify the connection system of the indoor unit and outdoor unit it is necessary to give name to each system and mark it onto the nameplate on the ele...

Page 136: ...tion to applying the general heat insulation materials Enough heat insulation materials should also be applied to the refrigerant joint and the pipe joint 4 2 Heat Insulation of the Drain Pipe Be sure...

Page 137: ...3 Do not rest the weight of the connective pipe on the adapter of the indoor unit Too heavy load on the adapter of the indoor unit may deform the pipe and thus affect the cooling heating effect 5 2 1...

Page 138: ...h the sheath which gets through the wall and lead it into the room Lay out the pipelines carefully lest damage to the pipes 5 2 3 Make a vacuum of connective pipeline 5 2 4 After the above steps are c...

Page 139: ...que by reference to the following table Replenishment quantity of refrigerant required for air conditioner The single pass pipe is shorter than 5 m and no additional length is required note The unit h...

Page 140: ...ifice nut of valve A After all air is expelled tighten the maintenance 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 5...

Page 141: ...ting air for over 15 minutes Check whether the multi meter points at 1 0X10 Pa 76cmHg Loosen and remove the square head cover of valves A and B After opening valves A and B completely tighten the squa...

Page 142: ...eak detector to check whether gas leakage exists at the adapters 5 5 Heat Insulation Use heat insulation materials to wrap the part protruding outside the flared pipe joint and the refrigerant pipe of...

Page 143: ...In the construction do not drop trash into the drip tray or drain pipe of the indoor unit Upon completion of installing the drain pipe remove the inspection panel Put water into the drip tray to chec...

Page 144: ...wire firmly The wiring must be performed by professional technicians according to the circuit diagram labels Distribute the wires according to the relevant electric technical standards promulgated by...

Page 145: ...R410A Tropical Split Type Technical Manual Electric Connection Installation 145 Duct type 76 kBtu h 96 kBtu h 120 kBtu h cooling only Duct type 76 kBtu h 96 kBtu h 120 kBtu h cooling and heating type...

Page 146: ...Electric Connection R410A Tropical Split Type Technical Manual Installation 146 Duct type 150 kBtu h cooling only Duct type 150 kBtu h cooling and heating type...

Page 147: ...R410A Tropical Split Type Technical Manual Electric Connection Installation 147 Floor standing type 76 kBtu h 96 kBtu h cooling only Floor standing type 76 kBtu h 96 kBtu h cooling and heating type...

Page 148: ...Hz Capacity of power supply fuse A 40 20 40 20 20 12 Indoor power cable RVV 300 500 2 2 5 mm 2 RVV 300 500 2 2 5 mm 2 RVV 300 500 2 2 5 mm 2 Grounded wire RVV 300 500 2 5 mm 2 RVV 300 500 2 5 mm 2 RVV...

Page 149: ...ower supply 380 415V 3N 50Hz 380 415V 3N 50Hz 380 415V 3N 50Hz 380 415V 3N 50Hz Capacity of power supply fuse A 60 40 60 40 60 40 60 40 Power supply cable YCW 450 750 4 6 0 mm 2 YCW 450 750 4 6 0 mm 2...

Page 150: ...on 150 7 3 Power wires The power wires are as follows schematic diagram Indoor unit Control wire between indoor unit and outdoor unit RCCB Manual switch Indoor unit power supply Outdoor unit power sup...

Page 151: ...must be glass wool 3 1 For purpose of air outlet 2 Must adopt fire resistant materials Those materials other materials Those materials other shall not be applied 3 The heat insulation material must be...

Page 152: ...he horizontal and vertical distance of the fan can be adjusted applicable to department store and exhibition hall where the decorative effect is essential 10 1 Low noise compared with other air outlet...

Page 153: ...tape the adhesion will be weakened due to change of temperature 1 It is used to prevent glass wool leak and seal the gas at the time of the flanges and pipelines of the ventilation pipes 2 Entwine for...

Page 154: ...figuring and Selecting Installation R410A Tropical Split Type Technical Manual Installation 154 Part 5 Control 1 Wireless Remote Controller 155 2 Wired controller Optional 161 3 Central Control Monito...

Page 155: ...3 0V Lowest Voltage of CPU Emitting Signal 2 0V Reaching Distance 8m when using 3 0 voltage it Gets 11m Environment Temperature Range 5 60 Performance Features 1 Operating Mode COOL HEAT DRY FAN and A...

Page 156: ...it Type Technical Manual Control 156 1 2 Introduction of Function Buttons on the Remote Controller Fig 1 Note This illustration is for explanation purposes only The actual shape or button names of the...

Page 157: ...nergy Saving operation mode LOCK Button Push this button to lock in all the current settings To release settings push again CANCEL Button Push this button to cancel the TIMER settings TIMER Button Thi...

Page 158: ...isplay 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 OF...

Page 159: ...gain to stop the unit operation NOTE 1 In the AUTO mode the air conditioner can logically choose the mode of COOL FAN HEAT and DRY by sensing the difference between the actual ambient room temperature...

Page 160: ...digital display c Set the STARTING STOPPING time Please press the CANCEL button to cancel any former settings Push the TIMER button and the remote controller will show the last set time for START oper...

Page 161: ...p Infra ed Pipe Indoor U nit RUN GND 5 Wiring Principle Sketch Indoor Unit SwitchBoard Note When the air conditioner needs the constant frequency wire Controller Be sure adding a Wire Joint with 5 ter...

Page 162: ...A Tropical Split Type Technical Manual Control 162 Note 1 Never turn screws too tightly or else the cover would be dented or the Liquid Crystal breaks 2 Please leave enough long cable for maintenance...

Page 163: ...R410A Tropical Split Type Technical Manual Central Control Monitor Optional Control 163 3 Central Control Monitor Optional CCM03 1 Outlook Buttons and Functions...

Page 164: ...Central Control Monitor Optional R410A Tropical Split Type Technical Manual Control 164 Liquid Crystal Display...

Page 165: ...ifferentiate each centralized controller the controllers in the same RS 485 net should be with different address with each other NOTE 1 Never turn screws too tightly otherwise the cover would be dente...

Page 166: ...03 115 0 41164 4 44 0000 36 6 13059 76 1 34105 116 0 40060 3 41 5878 37 5 87359 77 1 29078 117 0 38991 2 39 8239 38 5 62961 78 1 25423 118 0 37956 1 37 1988 39 5 39689 79 1 21330 119 0 36954 0 35 2024...

Search results

Summary of Contents for MFA-76CRN1

Reviews:

Related manuals for MFA-76CRN1

Brands by name

Popular brands

Midea MFA-76CRN1, Technical Manual

Search results

Summary of Contents for MFA-76CRN1

Reviews:

Related manuals for MFA-76CRN1

Brands by name

Popular brands