Midea MHC-96HWD1N1A, Service Manual

Page 1: ...ull DC Inverter Split Duct 50Hz Side Air discharge Type Service Manual Applicable Model Indoor unit Outdoor unit Midea reserves the right to discontinue or change specification or designs at any time...

Page 2: ...ll DC Inverter Split Duct Type Technical Manual MCAC UTSM 201503 1 Content Part 1 General information 2 Part 2 Outdoor Unit 5 Part 3 Indoor Unit 11 Part 4 Installation Troubleshooting 23 Part 5 Contro...

Page 3: ...MCAC UTSM 201503 R410A Full DC Inverter Split Duct Type Technical Manual 2 Part 1 General information 1 Model Names of Indoor Outdoor Units 3 2 External Appearance 3 3 Nomenclature 4...

Page 4: ...l Names of Indoor Outdoor Units Type Indoor unit Outdoor unit Model Power supply Model Power supply Hi static pressure duct type MHC 96HWD1N1 A 220 240V 1Ph 50Hz MOUA 96HD1N1 R 380 415V 3Ph 50Hz 2 Ext...

Page 5: ...10A Full DC inverter Control type Wired controller H Heat pump Nominal cooling capacity 96 1 000Btu h Series number C type High static pressure duct type Midea 3 2 Outdoor unit M O U A 96 H D1 N1 R Po...

Page 6: ...Split Duct Type Technical Manual MCAC UTSM 201503 5 Part 2 Outdoor Unit 1 Specifications 6 2 Dimension Unit mm 7 3 Refrigerant circuit 8 4 Wiring Diagrams 9 5 Electric Characteristics 9 6 Sound Level...

Page 7: ...r of rows 2 Tube pitch a row pitch b mm 21 19 4 Fin spacing mm 1 5 Fin type Hydrophilic fin Tube outside diameter mm 7 Tube type Inner groove tube Coil length height mm 1080 x 756 Number of circuits 1...

Page 8: ...R410A Full DC Inverter Split Duct Type Technical Manual MCAC UTSM 201503 7 2 Dimension Unit mm 1558 1120 668 206 440 400 528 494...

Page 9: ...Technical Manual 8 3 Refrigerant circuit High pressure switch Oil seperator Oil return capilary Compressor Low pressure switch Low pressure liquid accumulator can Condensor High pressure liquid accumu...

Page 10: ...Unit Power Supply Compressor OFM Hz Voltage Min Max MCA TOCA MFA MSC RLA KW FLA MOUA 96HD1N1 R 50 380 415V 342V 440V 23 40 15 4 0 17 1 7 Remark MCA Min Current Amps A TOCA Total Over current Amps A MF...

Page 11: ...Technical Manual 10 6 Sound Levels Unit Number Model Noise level under three speeds of fan dB A 1 MOUA 96HD1N1 R 59 7 Accessories Accessory name of outdoor unit Qty Purpose Connection pipe 1 Connectin...

Page 12: ...chnical Manual MCAC UTSM 201503 Part 3 Indoor Unit 1 Features 12 2 Specifications 13 3 Dimensions Unit mm 14 4 Wiring Diagrams 15 5 Capacity Table 18 6 Static Pressure Curve 19 7 Electric Characterist...

Page 13: ...ndoor air flow is up to 4800m3 h 1 3 Flexible duct design for different room styles Multi diffusers from one indoor unit supply airflow to multi rooms at the same time The unit is suitable for various...

Page 14: ...410A Design pressure MPa 4 4 2 6 Refrigerant pipe Liquid side Gas side mm 9 52 25 4 Max refrigerant pipe length m 50 Max difference in level Outdoor upper m 25 Max difference in level Outdoor lower m...

Page 15: ...R410A Full DC Inverter Split Duct Type Technical Manual 14 3 Dimensions Unit mm Air outlet duct connection screw hole location diagram Return air duct rivet screw hole location diagram 122 194 194 272...

Page 16: ...R410A Full DC Inverter Split Duct Type Technical Manual MCAC UTSM 201503 15 4 Wiring Diagrams...

Page 17: ...MCAC UTSM 201503 R410A Full DC Inverter Split Duct Type Technical Manual 16...

Page 18: ...R410A Full DC Inverter Split Duct Type Technical Manual MCAC UTSM 201503 17...

Page 19: ...8 55 9 00 9 45 9 81 10 08 10 80 29 0 19 0 Tcc kW 30 52 29 12 28 56 26 32 25 62 24 36 22 96 Scc kW 25 64 24 75 24 56 23 95 24 08 23 39 22 27 S T 0 84 0 85 0 86 0 91 0 94 0 96 0 97 PW kW 8 28 8 73 9 09...

Page 20: ...based on the actual value of the static pressure of the product Otherwise there will be problems 0 8 4 12 3 5 6 7 C 9 A B D E F 0 8 4 12 3 5 6 7 C 9 A B D E F 0 8 4 12 3 5 6 7 C 9 A B D E F 0 8 4 12...

Page 21: ...0 3500 4000 4500 5000 5500 6000 0 25 50 75 100 125 150 air flow m3 h Static pressure Pa 0 1 0 1 High air Medium air Low air Static curve ENC2 2 3000 3500 4000 4500 5000 5500 0 50 100 150 200 0 1 0 1 H...

Page 22: ...Min Max MCA MFA kW FLA MHC 96HWD1N1 A 50 220 240V 198V 254V 15 0 75 5 1 Note MCA Min Current Amps A MFA Max Fuse Amps A IFM Indoor Fan Motor kW Fan Motor Rated Output kW FLA Full Load Amps A 8 Sound L...

Page 23: ...Sealed tube interface Water connective pipe 1 Connect to water drainage pipe Protective sleeve for refrigerant inlet and outlet pipes 2 Wired controller 1 Copper nut 1 Connect to liquid side pipe Wate...

Page 24: ...TSM 201503 23 Part 4 Installation Troubleshooting 1 Notes 24 2 Installation of Duct Type Indoor Units 25 3 Installation of Outdoor Units 29 4 Connection of Refrigerant Pipe 32 5 Electric Connection 33...

Page 25: ...re corrosive gases exist e g sulfide gas Factories where the supply voltage fluctuates seriously Inside a car or cabin Place like kitchen where oil permeates Place where strong electromagnetic waves e...

Page 26: ...SM 201503 25 2 Installation of Duct Type Indoor Units 2 1 Installating space Ensure enough space required for installation and maintenance Unit mm Maintenance space Inspection orifice 600mmX600mm Over...

Page 27: ...ween buildings For detailed measures consult with the fitting out staff Fix the pendant bolts firmly and reliably in light of the specific situation Installation of the pendant bolt in different envir...

Page 28: ...must comply with the national heating air conditioner pipeline design specifications The duct accessories and materials must be produced by professional manufacturers In order to prevent air flow shor...

Page 29: ...rom overflowing The drainpipeabsorbs the odor When the outside static pressure is high especially the air inlet it is difficult todrain the water Drainage should be natural When constructing the outsi...

Page 30: ...to see whether it drain smoothly and whether there is water leakage 3 Heat insulation After confirming that drainage is smoothly and there is no leakage wrap the drainpipe with insulation material or...

Page 31: ...her objects Do not lean it more than 45 and do not lay it sidelong Make concrete foundation according to the sepecifications of the outdoor units refer to Fig 4 6 Fasten the feet of this unit with bol...

Page 32: ...e indoor and outdoor connecting pipe interface and power line outlet Vavious piping and viring patterns can be selected such as out from the front the back the side and undersurface etc The follow dis...

Page 33: ...med insulation material which the fire retardant is B1 grade and the heat resistance over 120 C When the external diameter of copper pipe 12 7mm the thickness of the insulating layer at least more tha...

Page 34: ...hose length is longer than 5m additional refrigerant quantity should be calculated by pipe diameter and length of outdoor and indoor unit liquid side pipe For details please refer to table below 5 Ele...

Page 35: ...tions No joint of wires is allowed Upon completion of wire connection double check it and then connect the power supply An all pole disconnection device which has at least 3mm separation distance in a...

Page 36: ...rter Split Duct Type Technical Manual MCAC UTSM 201503 35 6 Duct Design Scheme Examples of construction and ventilation pipeline design scheme Flowering hidden series Construction and ventilation pipe...

Page 37: ...mote controller holder as required by the user The holder must be installed in a location suitable for transmitting the signals of the remote controller to the indoor unit Use the remote controller or...

Page 38: ...hree times P9 protection in 60 minutes P0 Top temperature protection of compressor Display H6 if three times in 100 minutes P1 High pressure protection or high temperature protection of discharge sens...

Page 39: ...ity of outdoor units is large the phase sequence should be staggered then the current can be distributed to the three phases equally E1 Phase sequence error The 3 phase sequence of power supply is wro...

Page 40: ...are interfered by high voltage power voltage over 220V is high voltage power Communication wires are close to electromagnetic interference source Such as transfer strong fluorescent lamp etc Remove t...

Page 41: ...nd that T4 thermo bulb is earth continuity and further discover that the thermal cable of T4 sensor is punched by bolt as follows E4 T3 T4 T7 sensor error T3 T4 T7 port on main control board is loose...

Page 42: ...whether the inverter module is output error Dial the multimeter to diode file black pen on P and red pen respectively on U V W if the multimeter displays 0 4 0 7 V it is normal Red pen on N black pen...

Page 43: ...transformer on main control board is disabled Remove the interference There has electromagnetic interference nearby the unit Such as High frequency transmitter or other high strength radiation device...

Page 44: ...phenomenon of the low pressure side is blocked The discharge temperature is higher than normal value low pressure is lower than normal value current is lower than normal value and suction pipe may be...

Page 45: ...ical Manual 44 P0 Top temperature protection of compressor P4 Discharge temperature protection Notes There are three times in 100 minutes H6 will be displayed Repower on the protection will be cancele...

Page 46: ...the entire refrigerant Then vacuum the system and refill the refrigerant Add oil to the system if it leaks Yes No No No No Yes Yes Yes P2 H5 Low pressure protection System is lack of refrigerant Refri...

Page 47: ...DU fan running ODU are too near to each other etc Check the system and fixed up the error No Yes The high pressure side of the system is blocked for squashed pipe blocked valve or closed stop valve Ma...

Page 48: ...of condenser is not good It may be caused by dirty heat changer abnormal ODU fan running ODU are too near to each other etc Check the system and fixed up the error No Yes The high pressure side of the...

Page 49: ...r L2 high voltage protection L8 frequency difference in one second more than 15Hz L9 frequency difference between the real and the setting frequency more than 15Hz L0 module protection L5 Zero speed p...

Page 50: ...mal then go to step 2 Step 2 Module check 1 DC voltage between terminal P and terminal N should be 1 41 times of the local power supply voltage 2 DC voltage between terminal 1 and 2 should be 510V 580...

Page 51: ...k the DC voltage between 1 and 2 terminal the normal value should be 510V 580V if the voltage is lower than 510V go to step 2 Step 2 Check whether the wires of rectifier circuit are loose or not If wi...

Page 52: ...whether the voltage is stable If the voltage value is normal then the main PCB has malfunction it needs to be replaced 4 L8 L9 troubleshooting Step 1 Compressor check Measure the resistance between ea...

Page 53: ...em nearby Replace the main PCB of system A with correct connection if compressor A can start normally it means the main PCB which is replaced is damaged If compressor A still can t start normally repl...

Page 54: ...verter Split Duct Type Technical Manual MCAC UTSM 201503 53 Part 5 Controller 1 Wireless Remote Controller Optional 54 2 Wired Controller KJR 29B1 BK E Standard 54 3 Weekly Wired Controller KJR 120C B...

Page 55: ...y fan and auto 2 Set the mode through buttons 3 Indoor setting temperature range 17 C 30 C 4 LCD Liquid Crystal Display 5 Touch key 6 Can switch Fahrenheit degree and Centigrade degree New function Ba...

Page 56: ...less remote controller to control swinging through the display panel of the indoor unit or use the swing button on the wired remote controller to control the indoor unit for swinging 2 On and off the...

Page 57: ...press will circle as follow Notes Under AUTO and DRY modes the fan speed is not adjustable and the default fan speed is auto 5 Temperature setting Under AUTO COOL DRY HEAT modes press the temperature...

Page 58: ...been set timer on off press the ON OFF to turn on or turn off the unit then the timer will be canceled simultaneously 7 Clock setting Press the timer clock button setting for 3 seconds and then enter...

Page 59: ...d running time reaches the pre set value the air filter cleaning reminding icon will be lighted up to remind that the air filter of the indoor unit need to be cleaned Press for 3 seconds and reset the...

Page 60: ...d to electric shock or fire A random disassembly may cause abnormal operation or heating which may result in fire Do not install the controller in a place vulnerable to leakage of flammable gases Once...

Page 61: ...box 1 Wiring tube Insulating sleeve and tightening screw 1 4 Installation procedure The installation manual contains information about the procedure of installing wired controller Please refer to ind...

Page 62: ...ding 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...

Page 63: ...ke down the back cover Pay attention to spinning direction otherwise will damage the back cover Use three M4 20 screws to directly install the back cover on the wall Use two M4 25 screws to install th...

Page 64: ...wired controller back to the bottom cover Over fasten the screw will lead to deformation of back cover Neaten the wires of the wired controller There are three positions of signal wire outlet around...

Page 65: ...on reserve certain length of the connecting wire for convenient to take down the wired controller while during maintenance Wired controller s front cover installation After adjusting the front cover a...

Page 66: ...ing buttons and to adjust the second code value Step3 After setting the second code value press Quiet OK button to switch the first code to the next value Step4 When the first code value is 6 press Qu...

Page 67: ...ength can be up to 1200m The CCM30 centralized controller has the air filter cleaning reminding function and it is convenient to remind users to clean the air filter Both of the following wiring modes...

Page 68: ...eried 1 Setting key In other display modes press this key can enter the setting mode By default it is a single setting and the first in service air conditioner is displayed In setting the operation mo...

Page 69: ...d air conditioners have no swing function no effect will result after pressing the key 7 Leftward key In the query mode if this key is pressed the operation state data of the previous air conditioner...

Page 70: ...onditioner In the setting mode if the global operation mode is selected this key is invalid If it is on the last row press this key again to shift to the first row air conditioner If this key is long...

Page 71: ...ll be displayed 2 Setting operation mode Temperature adjusting method Press this key the setting temperature will decrease 1 If you hold down this key the setting temperature will decrease one by one...

Page 72: ...d a e h t s i d i r g e h t f o e t a n i d r o o c s i h t f o t i n u r o o d n i n a o t s d n o p s e r r o c d i r g h c a E s s e r d d a e d o m g n i t t e s F F O N O g n i m i T k r a m e r...

Page 73: ...troller network will be remote controller locked 2 Operation Locking The centralized controller can be locked by the computer only Unlocking a When the centralized controller and computer communicate...

Page 74: ...tralized controller to operate the air conditioner 2 Operation Can set the heat and cool mode lock or not Under mode locking state if set the new mode locking it must be unlocking first then can opera...

Page 75: ...ly By default they will run before the power failure mode The startup and shut down operations of the centralized controller and computer and all functional modules will be disabled only the command o...

Page 76: ...tates and operation ways of air conditioners in the current centralized there are following situations 1 If there are one or more air conditioners is under ON state include timing process of timing ON...

Page 77: ...t the same time the accumulated time of centralized controller powered on will be cleared Fig A 2 Function setting Dial the dial code 3 to ON refer to table 2 3 and when controller power on within 1 m...

Page 78: ...ntering optional function setting no operations in 5 seconds will exit function selection automatically the setting parameter will not change Only press key to confirm the parameter then the setting p...

Page 79: ...frigerant system we can just connect the indoor CCM controller via XYE port of indoor units If we connect the indoor CCM controller via XYE port of master outdoor unit the CCM controller cannot contro...

Page 80: ...ion between centralized controller and functional module 01 Communication malfunction between centralized controller and network interface module 00 Communication malfunction between network interface...

Page 81: ...lephone remote control module for communication the data is displayed in graphics Otherwise no data is displayed In normal operation of the centralized controller the periodical cycle module communica...

Page 82: ...ase of air conditioner fault or protection the corresponding fault or protection code the corresponding fault or protection code can be displayed Liquid crystal matrix display description The liquid c...

Page 83: ...air conditioners with the address from 57 to 60 are outside the network All other big and small dots in the matrix are luminous It indicates all other air conditioners are in the network and powered...

Page 84: ...nd queries the air conditioner with the address of 01 The mode of the air conditioner with the address 01 is Cooling high fan speed swing on setting temperature 22 C and cooling In the matrix only the...

Page 85: ...ance for your choice The main difference is the controller cover and you can choose you like 1 The structure A must be embedded into the wall of the installation mode taken from the walls of the inter...

Page 86: ...R410A Full DC Inverter Split Duct Type Technical Manual MCAC UTSM 201503 85 48 5 70 85 92 137 180 68 122 CCM30 BKE A CE CCM30 BKE A CCM30 BKE B CE CCM30 BKE B...

Page 87: ...pe Technical Manual 86 Installation diagram Terminal instruction X Y F1 L F2 N E E F O R C E DO N E N G ST O P Emergent stop switch Emergent start switch Communication port with computer Communication...