Midea MOU-12HDN1 Service Manual Download Page 6

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Model Names of Indoor/Outdoor Units

MLCAC-UTSM-2010-10

General Information

1. Model Names of Indoor/Outdoor Units

1.1 Indoor Units

R410A (capacity multiplied by 1000Btu/h)

Type

Function

12 18 24 30 36 48 60

New Four-way cassette

Cooling and heating

√

Four-way cassette

Cooling and heating

√

Duct

Cooling and heating

√

Ceiling & floor

Cooling and heating

√

Console

Cooling and heating

√

1.2 Outdoor Units

Model of outdoor unit and corresponding indoor unit

Universal Outdoor unit Model

Compressor type

Compressor Brand

Matched indoor units

MOU-12HDN1 Rotary

Inverter

GMCC

MCA2-12HRDN1-Q
MTB-12HWDN1
MUB-12HRDN1
MFA-12HRDN1

MOUA-18HDN1-C0

Scroll DC Inverter

Shenyang SANYO

MCA2-18HRDN1-Q
MTB-18HWDN1
MUB-18HRDN1
MCC-18HRDN1
MFA-18HRDN1

MOUB-24HDN1 Rotary

Inverter

HITACHI

MTB1-24HWDN1
MUB-24HRDN1
MCC-24HRDN1

MOU-30HDN1 Rotary

Inverter

MITSUBISHI

MTB-30HWDN1
MUB-30HRDN1
MCC-30HRDN1

MOUB-36HDN1-Q Rotary

Inverter

MITSUBISHI

MTB-36HWDN1

MUB-36HRDN1
MCC-36HRDN1

MOUB-36HDN1-R Rotary

Inverter

MITSUBISHI

MOU-48HDN1 Rotary

Inverter

MITSUBISHI

MTB-48HWDN1

MUB-48HRDN1
MCC-48HRDN1

MOUB-48HDN1-R Rotary

Inverter

MITSUBISHI

MOUA-60HRDN1

Scroll DC Inverter

MITSUBISHI

MTB-60HWDN1
MUB-60HRDN1

MOUD-60HDN1-R

Scroll DC Inverter

MITSUBISHI

MCC-60HRDN1

Summary of Contents for MOU-12HDN1

Page 1: ...MIDEA LCAC 50Hz R410A DC Inverter Service Manual 2012...

Page 2: ......

Page 3: ...i Part 1 General Information 1 Part 2 Indoor Units 7 Part 3 Outdoor Units 74 Part 4 Installation 115 Part 5 Control 126 The specifications designs and information in this book are subject to change wi...

Page 4: ......

Page 5: ...2010 10 General Information General Information 1 Part 1 General Information 1 Model Names of Indoor Outdoor Units 2 2 External Appearance 3 2 1 Indoor Units 3 2 2 Outdoor Units 4 3 Nomenclature 5 4...

Page 6: ...its MOU 12HDN1 Rotary DC Inverter GMCC MCA2 12HRDN1 Q MTB 12HWDN1 MUB 12HRDN1 MFA 12HRDN1 MOUA 18HDN1 C0 Scroll DC Inverter Shenyang SANYO MCA2 18HRDN1 Q MTB 18HWDN1 MUB 18HRDN1 MCC 18HRDN1 MFA 18HRDN...

Page 7: ...MLCAC UTSM 2010 10 External Appearance General Information 3 2 External Appearance 2 1 Indoor Units Duct Ceiling Floor Four way Cassette New Compact Four way cassette Console...

Page 8: ...rnal Appearance MLCAC UTSM 2010 10 4 General Information 2 2 Outdoor Units MOU 12HDN1 MOUA 18HDN1 C0 MOUB 24HDN1 MOU 30HDN1 MOUB 36HDN1 R MOUB 36HDN1 Q MOU 48HDN1 MOUB 48HDN1 R MOUA 60HRDN1 MOUD 60HDN...

Page 9: ...Time Design C Third Time Design Product Category C Cassette Type T Duct Type U Ceiling Floor Type H High Static Pressure Duct Type Midea 3 2 Outdoor Unit M O U D 60 H D N1 R Power Supply R 380 415V 3...

Page 10: ...small starting current 4 4 Intelligent refrigerant adjustment technology Throttle part is made up of capillary and electronic expansion valve EXV The outdoor unit can output the most accurate capacit...

Page 11: ...MLCAC UTSM 2010 10 Indoor Units Indoor Units 7 Part 2 Indoor Units New Four way Cassette Type Compact 8 Four way Cassette Type 17 Duct Type 31 Ceiling Floor Type 45 Console Type 61...

Page 12: ...act New Four way Cassette Type Compact 1 Features 9 2 Dimensions 10 3 Service Space 10 4 Wiring Diagrams 11 5 Air Velocity and Temperature Distributions Reference Data 12 6 Electric Characteristics 13...

Page 13: ...to the heat exchange uniform 4 Improvement for easy installation and maintenance Little space is required for installation into a shallow ceiling Because of the compactness and weight reduction of the...

Page 14: ...Dimensions MLCAC UTSM 2010 10 10 New Four way Cassette Compact 2 Dimensions 3 Service Space...

Page 15: ...MLCAC UTSM 2010 10 Wiring Diagrams New Four way Cassette Compact 11 4 Wiring Diagrams MCA2 12HRDN1 Q MCA2 18HRDN1 Q...

Page 16: ...Air Velocity and Temperature Distributions Reference Data MLCAC UTSM 2010 10 12 New Four way Cassette Compact 5 Air Velocity and Temperature Distributions Reference Data Airflowvelocity Temperature...

Page 17: ...ic Characteristics Model Indoor Units Power Supply Hz MFA Min Max MFA MCA2 12HRDN1 Q 50 220 240V 198V 254V 20 MCA2 18HRDN1 Q 50 220 240V 198V 254V 15 Remark MFA Max Fuse Amps A 7 Sound Levels 1 4m Mic...

Page 18: ...8 Accessories Name Shape Quantity 1 Drain joint Be provided in outdoor unit 1 2 Remote controller 1 3 Remote controller holder 1 4 Mounting screw ST2 9 10 C H 2 5 Alkaline dry batteries AM4 2 6 Owner...

Page 19: ...MLCAC UTSM 2010 10 Field Wiring New Four way Cassette Compact 15 10 Field Wiring MCA2 12HRDN1 Q MCA2 18HRDN1 Q...

Page 20: ...Field Wiring MLCAC UTSM 2010 10 16 New Four way Cassette Compact MCA2 12HRDN1 Q MCA2 18HRDN1 Q...

Page 21: ...ur way Cassette Type 1 Features 18 2 Dimensions 21 3 Service Space 22 4 Wiring Diagrams 23 5 Air Velocity and Temperature Distributions Reference Data 24 6 Electric Characteristics 25 7 Sound Levels 2...

Page 22: ...evaporator sufficient airflow volume guarantees the excellent capacity 4 The adoption of the most advanced 3 Dimensional Screw fan Reduces the air resistance passing through Smoothes the air flow Mak...

Page 23: ...ed can acquire high heat exchanger effect 10 More strengthening rib design around the panel preventing the distortion for the panel 11 New outlet frame design to make the phenomena of coagulation grea...

Page 24: ...drop height is higher Max pipe length up to 50m refer to and Max drop height up to 30m refer to 17 Optimal design smaller Control Box Space saving and convenient for wiring Using fire resistance galva...

Page 25: ...imensions Four way Cassette Type 21 2 Dimensions Unit mm MODEL Btu h A B C H 18000 230 12 7 6 35 260 24000 230 15 9 9 52 260 30000 300 15 9 9 52 330 36000 300 15 9 9 52 330 48000 300 15 9 9 52 330 600...

Page 26: ...Service Space MLCAC UTSM 2010 10 22 Four way Cassette Type 3 Service Space For 18 48k For 60k...

Page 27: ...MLCAC UTSM 2010 10 Wiring Diagrams Four way Cassette Type 23 4 Wiring Diagrams MCC 18HRDN1 MCC 24HRDN1 MCC 30HRDN1 MCC 36HRDN1 MCC 48HRDN1 MCC 60HRDN1...

Page 28: ...Airflowvelocity Electronic expansionvalve Oil separator Compressor Lowpressure switch Oil return Capillary Highpressureswitch Lowpressureliquid accumulator Evaporator Capillary Outdoor unit Indoorunit...

Page 29: ...DN1 50 220 240 198 254 15 MCC 30HRDN1 50 220 240 198 254 15 MCC 36HRDN1 50 220 240 198 254 15 MCC 48HRDN1 50 220 240 198 254 15 MCC 60HRDN1 50 220 240 198 254 15 MCC 60HRDN1 50 220 240 198 254 15 Rema...

Page 30: ...inpipe Fittings Out let pipe sheath 1 Out let pipe clasp 1 Drain joint 1 Seal ring 1 Remote controller Its Frame Remote controller Its Frame 1 Remote controller holder 1 Mounting screw ST2 9 10 C H 2...

Page 31: ...lation sheath 2 Drainpipe Fittings 6 Out let pipe 1 7 Out let pipe sheath 1 8 Out let pipe clasp 1 9 Tightening band 20 Remote controller Its Frame 10 Remote controller 1 11 Remote controller holder 1...

Page 32: ...The Specification of Power MLCAC UTSM 2010 10 28 Four way Cassette Type 9 The Specification of Power...

Page 33: ...MLCAC UTSM 2010 10 Field Wiring Four way Cassette Type 29 10 Field Wiring Wiring chart...

Page 34: ...Field Wiring MLCAC UTSM 2010 10 30 Four way Cassette Type...

Page 35: ...Duct Type 31 Duct Type 1 Features 32 2 Dimensions 33 3 Service Space 34 4 Wiring Diagrams 35 5 Static Pressure 36 6 Electric Characteristics 38 7 Sound Levels 39 8 Accessories 40 9 The Specification o...

Page 36: ...2010 10 32 Duct Type 1 Features New structure design Built in drainage pump Optical Two air intake ways from below or rear standard Wire controller is standard Three speeds indoor unit Fresh air inle...

Page 37: ...e Air return opening size Size of outline dimension mounted plug A B C D E F G H I J K L M 12 18 920 210 635 570 65 713 35 119 815 200 80 960 350 24 920 270 635 570 65 713 35 179 815 260 20 960 350 30...

Page 38: ...Space MLCAC UTSM 2010 10 34 Duct Type 3 Service Space Ensure enough space required for installation and maintenance All the indoor units reserve the hole to joint the fresh air pipe The hole size as f...

Page 39: ...E PL EASE USE SHI ELDE R WI RE F OR C OMM BUS WIR E 202070390385 P3 BLACK CH H P2 CH P3 HIGH FAN SUPER HIGH FAN 9 8 7 5 14000W 10500W 9000W 7100W ENC1 4 5600W 5300W CN9 TO OUTDOOR COMM BUS TO CCM COM...

Page 40: ...tatic pressure Pa 3 Airvolum e m h 1100 1000 900 800 700 600 Pa 90 80 70 60 50 40 30 20 10 Lowspeed 200 300 400 500 Superhighspeed MTB1 24HWDN1 MTB 30HWDN1 700 1500 1200 Mid speed High speed External...

Page 41: ...200 1800 2000 Super high speed Pa 3100 2800 1900 1600 Low speed 10 20 30 40 50 60 70 80 90 1000 Air volume m h 3 External static pressure Pa High speed Mid speed 1300 2200 2500 Pa 100 Super high speed...

Page 42: ...Power Supply Hz Voltage Min Max MFA MTB 12HWDN1 50 220 240 198 254 15 MTB 18HWDN1 50 220 240 198 254 15 MTB1 24HWDN1 50 220 240 198 254 15 MTB 30HWDN1 50 220 240 198 254 15 MTB 36HWDN1 50 220 240 198...

Page 43: ...nd Levels Suction Discharge Microphone 1 4m Concealed Duct Type Duct Duct Model Noise level dB A H M L MTB 12HWDN1 37 30 26 MTB 18HWDN1 44 36 33 MTB1 24HWDN1 45 43 41 MTB 30HWDN1 46 44 42 MTB 36HWDN1...

Page 44: ...for cooling heating Drain joint 1 Seal ring 1 Remote controller Its Frame Remote controller 1 Frame 1 Mounting screw ST2 9 10 C H 2 Alkaline dry batteries AM4 2 Remote controller manual 1 Wired contr...

Page 45: ...MLCAC UTSM 2010 10 The Specification of Power Duct Type 41 9 The Specification of Power...

Page 46: ...Field Wiring MLCAC UTSM 2010 10 42 Duct Type 10 Field Wiring...

Page 47: ...MLCAC UTSM 2010 10 Field Wiring Duct Type 43 Air conditioner link circuit...

Page 48: ...Field Wiring MLCAC UTSM 2010 10 44 Duct Type...

Page 49: ...ing Floor Type 1 Features 46 2 Dimensions 47 3 Service Space 49 4 Wiring Diagrams 50 5 Air Velocity and Temperature Distributions Reference Data 52 6 Electric Characteristics 54 7 Sound Levels 55 8 Ac...

Page 50: ...e air flow Air flow directional control minimizes the air resistance and produces wilder air flow to vertical direction The range of horizontal air discharge is widened which secures wider air flow di...

Page 51: ...MLCAC UTSM 2010 10 Dimensions Ceiling Floor Type 47 2 Dimensions a Wall mounting installation b Ceiling installation...

Page 52: ...UTSM 2010 10 48 Ceiling Floor Type Capacity Btu h A B C D E F G H 12000 24000Btu h 990 660 206 505 506 907 200 203 30000 36000Btu h 1280 660 206 795 506 1195 200 203 48000 60000Btu h 1670 680 244 1070...

Page 53: ...MLCAC UTSM 2010 10 Service Space Ceiling Floor Type 49 3 Service Space...

Page 54: ...Wiring Diagrams MLCAC UTSM 2010 10 50 Ceiling Floor Type 4 Wiring Diagrams MUB 12HRDN1...

Page 55: ...MLCAC UTSM 2010 10 Wiring Diagrams Ceiling Floor Type 51 MUB 18HRDN1 MUB 24HRDN1 MUB 30HRDN1 MUB 36HRDN1 MUB 48HRDN1 MUB 60HRDN1...

Page 56: ...LING Airflow velocity Electronic expansion valve Oil separator Compressor Low pressure switch Oil return Capillary High pressure switch Low pressure liquid accumulator Evaporator Capillary Outdoor uni...

Page 57: ...MLCAC UTSM 2010 10 Air Velocity and Temperature Distributions Reference Data Ceiling Floor Type 53 Discharge angle 60 FLOOR Airflow velocity Temperature...

Page 58: ...Unit Power Supply Hz Voltage Min Max MFA MUB 12HRDN1 50 220 240 198 254 20 MUB 18HRDN1 50 220 240 198 254 15 MUB 24HRDN1 50 220 240 198 254 15 MUB 30HRDN1 50 220 240 198 254 15 MUB 36HRDN1 50 220 240...

Page 59: ...ls Ceiling Floor Type 55 7 Sound Levels Ceiling Floor Model Noise level dB A H M L MUB 12HRDN1 40 37 33 MUB 18HRDN1 43 41 38 MUB 24HRDN1 45 43 40 MUB 30HRDN1 45 43 40 MUB 36HRDN1 45 43 40 MUB 48HRDN1...

Page 60: ...n fittings Name Shape Quantity 1 Hook 2 2 Hanging arm 2 Remote controller Its holder 3 Remote controller 1 4 Remote controller holder 1 5 Mounting screw ST2 9 10 C H 2 6 Alkaline dry batteries AM4 2 O...

Page 61: ...20 240V 50Hz 220 240V 50Hz 220 240V 50Hz 220 240V 50Hz POWER WIRING mm 2 3 1 5 3 1 0 3 1 0 3 1 0 CIRCUIT BREAKER A 20 15 15 15 OUTDOOR UNIT POWER Phase 1 phase 1 phase 3 phase Frequency and Voltage 22...

Page 62: ...Field Wiring MLCAC UTSM 2010 10 58 Ceiling Floor Type 10 Field Wiring...

Page 63: ...MLCAC UTSM 2010 10 Field Wiring Ceiling Floor Type 59 For model 12...

Page 64: ...Field Wiring MLCAC UTSM 2010 10 60 Ceiling Floor Type For model 18 60...

Page 65: ...Type 1 Features 63 2 Dimensions 64 3 Service Space 65 4 Wiring Diagrams 66 5 Air Velocity and Temperature Distributions Reference Data 67 6 Electric Characteristics 68 7 Sound Levels 69 8 Accessories...

Page 66: ......

Page 67: ...ing or lower wall applications as a floor standing floor model it can be semi or fully recessed without loss of capacity 1 5 High efficiency filter built in Formaldehyde nemesis filter active carbon a...

Page 68: ...Dimensions MLCAC UTSM 2010 10 64 Console Type 2 Dimensions MFA 12HRDN1 MFA 18HRDN1...

Page 69: ...MLCAC UTSM 2010 10 Service Space Console Type 65 3 Service Space...

Page 70: ...ROOM TE MPERATURE PIPE TE MPERATURE CONNECT OR S CONNECT OR S P C BOARD SOCKETS WIRING DIAGRAM INDOOR UNIT CODE PART NAME INDOOR DC FAN MOTOR UPPER O UT LET SWIN G MOTOR XT1 CN13 CN6 M1 M2 RT1 RT2 M2...

Page 71: ...MLCAC UTSM 2010 10 Air Velocity and Temperature Distributions Reference Data Console Type 67 5 Air Velocity and Temperature Distributions Reference Data Discharge angle 60 Airflow velocity Temperature...

Page 72: ...ics MLCAC UTSM 2010 10 68 Console Type 6 Electric Characteristics Model Indoor Unit Power Supply Hz Voltage Min Max MFA MFA 12HRDN1 50 220 240V 198V 254V 16 MFA 18HRDN1 50 220 240V 198V 254V 16 Remark...

Page 73: ...MLCAC UTSM 2010 10 Sound Levels Console Type 69 7 Sound Levels 1 5m 1m Microphone Model Noise level dB A Highest Higher H M L MFA 12HRDN1 38 35 33 31 28 MFA 18HRDN1 44 41 39 37 34...

Page 74: ...8 Accessories MFA 12HRDN1 MFA 18HRDN1 Name Shape Quantity Installation fittings Hook 2 Remote controller Its Frame Remote controller 1 Frame 1 Mounting screw ST2 9 10 C H 2 Alkaline dry batteries AM4...

Page 75: ...MLCAC UTSM 2010 10 The Specification of Power Console Type 71 9 The Specification of Power...

Page 76: ...Field Wiring MLCAC UTSM 2010 10 72 Console Type 10 Field Wiring...

Page 77: ...MLCAC UTSM 2010 10 Field Wiring Console Type 73...

Page 78: ...74 Outdoor Units Part 3 Outdoor Units 1 Dimensions 75 2 Service Space 77 3 Piping Diagrams 78 4 Wiring Diagrams 79 5 Electric Characteristics 84 6 Operation Limits 85 7 Sound Levels 86 8 Point Check...

Page 79: ...5 1 Dimensions Unit mm MODEL A B C D E F H MOU 12HDN1 760 530 290 315 270 285 590 MOUA 18HDN1 C0 845 560 335 360 312 320 700 MOUB 24HDN1 900 590 333 355 302 315 860 MOU 30HDN1 990 624 366 396 340 345...

Page 80: ...Dimensions MLCAC UTSM 2010 10 76 Outdoor Units Model Unit mm A B C D E F H MOUB 36HDN1 Q 940 600 376 400 340 360 1245 MOU 48HDN1 MOUB 48HDN1 R MOUA 60HRDN1 MOUD 60HDN1 R...

Page 81: ...MLCAC UTSM 2010 10 Service Space Outdoor Units 77 2 Service Space...

Page 82: ...illary Indoor unit 4 way valve High pressure switch Outdoor unit Condenser Low pressure switch Low pressure liquid accumulator MOU 30HDN1 MOUB 36HDN1 Q MOU 48HDN1 MOUB 36HDN1 R MOUB 48HDN1 R MOUA 60HR...

Page 83: ...MLCAC UTSM 2010 10 Wiring Diagrams Outdoor Units 79 4 Wiring Diagrams MOU 12HDN1...

Page 84: ...Wiring Diagrams MLCAC UTSM 2010 10 80 Outdoor Units MOUA 18HDN1 C0 MOUB 24HDN1...

Page 85: ...MLCAC UTSM 2010 10 Wiring Diagrams Outdoor Units 81 MOU 30HDN1 MOUB 36HDN1 Q MOU 48HDN1...

Page 86: ...Wiring Diagrams MLCAC UTSM 2010 10 82 Outdoor Units MOUB 36HDN1 R MOUB 48HDN1 R MOUD 60HDN1 R...

Page 87: ...MLCAC UTSM 2010 10 Wiring Diagrams Outdoor Units 83 MOUA 60HRDN1...

Page 88: ...0 240 198 254 30 MOUA 18HDN1 C0 50 220 240 198 254 30 MOUB 24HDN1 50 220 240 198 254 30 MOU 30HDN1 50 220 240 198 254 40 MOUB 36HDN1 Q 50 220 240 198 254 40 MOU 48HDN1 50 220 240 198 254 40 MOUB 36HDN...

Page 89: ...eyond the above conditions certain safety protection features may come into operation and cause the unit to operate abnormally 2 The room relative humidity should be less than 80 If the air conditione...

Page 90: ...utdoor Unit Microphone Note H 0 5 height of outdoor unit Model Noise level dB A H L MOU 12HDN1 48 44 MOUA 18HDN1 C0 51 46 MOUB 24HDN1 53 48 MOU 30HDN1 57 50 MOUB 36HDN1 Q 57 52 MOUB 36HDN1 R 55 50 MOU...

Page 91: ...gree the digital display tube will show 70 If the indoor unit is not connected the digital display tube will show 08 Outdoor ambient temp T4 09 Compressor discharge temp Tp The display value is betwee...

Page 92: ...ay board Compact 4 way cassette Console Ceiling Floor Normal 4 way cassette Duct OPERATION TIMER DEF FAN ALARM Temporary button Operation lamp Timer indicator Infrared signal receiver Alarm indicator...

Page 93: ...short circuit of T1 temperature sensor X X X 3 Open or short circuit of T2 temperature sensor X X X 4 Full water malfunction X X X 5 Indoor EEPROM malfunction X X 6 IPM module protection X X O 7 Open...

Page 94: ...t of T1 or T2 temperature sensor X 3 Fan motor malfunction X 4 Outdoor unit malfunction X X 5 Indoor EEPROM malfunction X off flash at 5Hz flash at 0 5Hz For compact 4 way cassette 18K ceiling floor 1...

Page 95: ...Communication malfunction in outdoor IC and DSP E4 Malfunction of outdoor temperature sensor E5 Voltage protection of compressor E6 PFC module protection Only for 30K 36K 48K with 1 phase P0 Top temp...

Page 96: ...the indoor unit 10 3 1 1 Open or short circuit of temperature sensor Check the connections between temperature sensor and PCB Are the connections good Correct the connections No Yes Yes Replace indoor...

Page 97: ...door EEPROM malfunction If the EEPROM chip is welded on PCB replace the PCB directly Otherwise check whether the EEPROM chip plugged in PCB well Yes No Yes Insert the EEPROM well Replace the indoor PC...

Page 98: ...lfunction If the water level switch is inserted well No Insert the water level switch well If the water level switch is broken Yes Replace the water level switch If the water pump is normal No Replace...

Page 99: ...the wires of fan motor Are all the connections good No Yes No Correct the connections No Yes Replace indoor main PCB Is it still displaying the error code Yes Yes Check the voltage between port 1 and...

Page 100: ...over strong current protection Only for 12k 10 3 2 2 E0 malfunction If the EEPROM chip is welded on PCB replace the PCB directly Otherwise check whether the EEPROM chip plugged in PCB well Yes No Yes...

Page 101: ...rror extinguished Change the indoor main PCB No Change the outdoor main PCB No Check all the wirings between indoor and outdoor indoor PCB and outdoor PCB following the wiring diagram Are all the wiri...

Page 102: ...interference Increase the capacity of anti interference Yes Yes Replace the signal wire Yes Pull out and insert back No No Replace indoor PCB is the error distinguished Yes Replace the outdoor PCB No...

Page 103: ...oard light Check the signal wire between the IPM module and the main board is it connected good Reconnect and retry Is error still display Replace IPM board and then check whether the system can run n...

Page 104: ...ether the resistance of condenser temp sensorT3 is wrong refer to the Appendix 1 Yes Connect the wiring well Yes Judge 2 Outdoor ambient temp sensor T4 is malfunction No Replace outdoor ambient temper...

Page 105: ...wer supply Check whether the voltage of IPM board P and N is normal DC277 356V for 18K 24K 30KBtu h DC277 410V for 36K 48KBtu h Replace bridge rectifiers and then check whether the system can run norm...

Page 106: ...en L 1 L 2 L 3 is about 380VAC Check the power supply Check whether the voltage range of P N on IPM module is normal DC 350 650V Replace bridge rectifiers and then check whether the system can run nor...

Page 107: ...PFC module is connected tightly Yes Check whether the voltage range of P N on IPM module is normal DC277 410V for 36K 48KBtu h No Check whether the inductance of PFC module is good If the inductance...

Page 108: ...Troubleshooting MLCAC UTSM 2010 10 104 Outdoor Units 10 3 2 10 P0 malfunction...

Page 109: ...MLCAC UTSM 2010 10 Troubleshooting Outdoor Units 105 10 3 2 11 P1 malfunction Only for 30K 60K...

Page 110: ...Troubleshooting MLCAC UTSM 2010 10 106 Outdoor Units 10 3 2 12 P2 malfunction Only for 30K 60K...

Page 111: ...MLCAC UTSM 2010 10 Troubleshooting Outdoor Units 107 10 3 2 13 P3 malfunction...

Page 112: ...discharge temp is more than 115 C Check whether the wiring connection is right between compressor discharge temp sensor and PCB according to wiring diagrams Method Check whether the resistance of comp...

Page 113: ...Judge 1 Check whether the outdoor ambient temperature is higher than 50 No Judge 3 The refrigerant pipe is blocked Let the refrigerant out then use the high pressure nitrogen or refrigerant to blow p...

Page 114: ...eck whether the connecting line of the compressor is connected correctly or tightly Replace the IPM module check whether the system can work normally No No Replace the main board check whether the sys...

Page 115: ...k ok or not No No No Connect it well check ok or not Check whether the connecting line of the compressor is connected correctly or tightly Replace the IPM module check whether the system can work norm...

Page 116: ...cked and the indoor fan is running normal No Check refrigerant system such as clogging of capillary etc No Clean the heat exchanger and the air outlet Reconnect and retest No Whether the connection is...

Page 117: ...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 40 5 17519 80 1 17393 1...

Page 118: ...2 489 5 234 9 35 35 78 75 8 084 115 2 422 4 222 8 36 34 32 76 7 82 116 2 357 3 211 4 37 32 94 77 7 566 117 2 294 2 200 7 38 31 62 78 7 321 118 2 233 1 190 5 39 30 36 79 7 086 119 2 174 0 180 9 40 29...

Page 119: ...ation Installation 115 Part 4 Installation 1 Precaution on Installation 116 2 Vacuum Dry and Leakage Checking 117 3 Additional Refrigerant Charge 119 4 Water Drainage 120 5 Insulation Work 123 6 Wirin...

Page 120: ...outdoor unit should be closed absolutely as original state Every time you connect it first loosen the nuts at the part of stop value then connect the flare pipe immediately in 5 minutes If the nuts h...

Page 121: ...different construction environment common vacuum dry special vacuum dry Common vacuum dry procedure Vacuum dry for the first time connect the all purpose detector to the inlet of liquid pipe and gas...

Page 122: ...oy for the s econd time Fill nitrogen to 0 5Kgf cm2 Because nitrogen is for drying gas it has vacuum drying effect during vacuum destroy But if the moisture is too much this method can t dry thoroughl...

Page 123: ...cause explosions and accidents so always ensure that the appropriate refrigerant is charged e Refrigerant containers shall be opened slowly f Always use protective gloves and protect your eyes when ch...

Page 124: ...ated to prevent atomization Drainpipe should be installed before installing indoor unit After powering on there is some water in water receiver plate Please check if the drain pump can operate correct...

Page 125: ...50 l hr I D mm Thick Hard PVC 14 25 3 0 Hard PVC 14 88 30 3 5 Hard PVC 88 334 40 4 0 Hard PVC 175 334 50 4 5 Hard PVC 334 80 6 0 4 5 Drainage test 1 Drainage without drain pump After finishing drainp...

Page 126: ...the alarm lamp flashes even overflow from the water receipt plate Keep on pouring water until it gives an alarm signal for high water level check if the pump drains water at once If the water level ca...

Page 127: ...above 100 2 Thickness choice for insulation material Insulation material thickness is as follows Pipe diameter mm Adiabatic material thickness Refrigerant pipe 6 4 25 4 10mm 28 6 38 1 15mm Drainage p...

Page 128: ...e pipes Make sure there s no clearance in the joining part of the accessorial insulation material and local preparative insulation material 5 3 Drainage pipe insulation 1 The connection part should be...

Page 129: ...e air conditioner is pre heated by turning on the power 3 According to the user s requirement install the remote controller when the remote controller s signal can reach the indoor unit smoothly 4 Tes...

Page 130: ...Control MLCAC UTSM 2010 06 126 Control Part 5 Control 1 Wireless Remote Controller 127...

Page 131: ...F 10 Time ON Adjust 2 Fan speed se ttin g 4 Adjus t 1 3 Co ol heat Lock Reset 15 13 12 14 Confirmbutton 1 6 Economic operation TIME ON TI ME OF F C LOCK SWING AIRDIRE CTI ON O K ECO SW ING MODE FAN S...

Page 132: ...layed when resetting or electrifying for the first time Press CLOCK for 5s icon indicating hour will flash with 0 5s Press it again icon indicating minute will flash with 0 5s and are used to adjust t...

Page 133: ...r Control 129 1 1 RG51Q1 BGE General Function for wireless remote controller Model RG51Q1 BGE Rated voltage 3 0V 2pieces of LR03 7 batteries Min voltage for sending signal of CPU 2 4V Effective receiv...

Page 134: ...off the air conditioner 8 FAN SPEED Fan speed will be selected in following sequence once pressing this button AUTO LOW MED HIGH 9 TIME ON For time ON setting Once pressing this button the time will...

Page 135: ...ode HEAT is invalid for COOL ONLY wire controller AUTO COOLING DEHUMIDIFY HEATING FAN 2 Fan speed button FAN SPEED Press FAN SPEED to select fan speed from AUTO LOW MED and HIGH NOTE some air conditio...

Page 136: ...e state of TIMER OFF adjustment or after only set the TIMER OFF Display ON OFF if simultaneously set the mode of TIMER ON and TIMER OFF 7 Temperature display area Usually display the set temperature P...

Page 137: ...When push the button for 4 seconds the hour part on the clock display flashes every 0 5 seconds then push button and to adjust hour push the button CLOCK again the minute part flashes every 0 5 secon...

Page 138: ...A B C D E in indoor unit and fixing a infrared emitter whose anode and cathode connecting with A and B near the receiver in the Indoor Unit Switch Board then connecting the terminal 5v GND Run in the...

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