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6

、

The analysis of indoor malfunction code

（

internal wiring get loose, which

will cause malfunction.

）

Ⅰ、

indoor detailed malfunction

1.when indoor unit live wire is disconnected

，

its lamp panel can’t display.

Live wire is off

。

2.when the transformer’s secondary and primary disconnect or indoor fuse is off

，

the indoor unit lamp

panel can’t display.

Transformer secondary is off

Transformer primary is off

The relevant transfomer primary
socket

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Содержание CMV-50V9A-S

Страница 1: ...DC Inverter Split Air Condition Unit SERVICE MANUAL ...

Страница 2: ... Units operating working conditions and temperature range 3 Units characteristic 4 Indoor and outdoor units size 5 Indoor and outdoor unit explosion diagram and spare parts list 6 The analysis of indoor malfunction code 7 The analysis of the complete units malfunction code ...

Страница 3: ...1 The model and the air conditioning unit parameters 1 1 the model 1 2 the air conditioner s parameter ...

Страница 4: ...th ANSI AHAM RAC 1 2003 and UL 484 Cooling Indoor 80o FDB 67o F WB Outdoor 95o F DB 75o F WB Heating Indoor 70 o F DB 60 o F WB Outdoor 47o F DB 43 o F WB 2 2 Operating Limits Outdoor Upper limit DB 110 o F Cooling Lower limit DB 5o F Upper limit DB 75 o F Heating Lower limit DB 5o F Voltage 1PH 230V ...

Страница 5: ...rgy saving Air filters easy to remove and clean Twin rotary compressor Auto restart after a power supply blackout Single phase power supply thanks to DC inverter technology low consumption Dynamic refrigerant control by DC inverter compressor and circuit electronic valve and fuzzy logic managed by a powerful micro program EEV for each indoor unit ...

Страница 6: ......

Страница 7: ...The new CMV is a high efficiency DC inverter technology outdoor unit it can save electricity 62 every year The compressors energy consumption graph COP W W 2ND ...

Страница 8: ...The compressor s condensing pressure graph ...

Страница 9: ...16 12336 13104 13872 14640 SC 10421 10603 10845 11027 11269 77 PI 0 72 0 73 0 75 0 76 0 77 TC 11040 11808 12576 13296 14064 SC 10118 10361 10542 10785 10966 86 PI 0 81 0 82 0 83 0 85 0 86 TC 10464 11232 12000 12768 13536 SC 9876 10058 10300 10542 10724 95 PI 0 88 0 90 0 92 0 93 0 94 TC 9936 10704 11424 12192 12960 SC 9634 9815 10058 10239 10482 104 PI 0 97 0 98 0 99 1 01 1 02 TC 9264 10032 10752 1...

Страница 10: ...0 20 18 PI 0 91 0 97 1 04 TC 11060 10500 9800 30 28 PI 0 96 1 02 1 08 TC 11340 10640 10080 36 34 PI 0 99 1 06 1 12 TC 14560 14000 13440 45 43 PI 1 04 1 11 1 18 TC 15400 14840 14140 50 48 PI 1 11 1 18 1 25 TC 16240 15680 14980 59 54 PI 1 16 1 22 1 30 TC 85 105 of nominal 59 75 Protection Range PI 80 120 of nominal L EG END TC Total Cooling Capacity BTU SC Sensible Capacity BTU PI Power Input kW WB ...

Страница 11: ...o Vs Outdoor Temperature Cooling Capacity Correction Factor 0 0 2 0 4 0 6 0 8 1 1 2 1 4 77 86 95 104 115 Outdoor Temp deg F Capacity Ratio 90 73 84 70 81 66 75 63 72 59 Heating Capacity Correction Factor 0 0 2 0 4 0 6 0 8 1 1 2 1 4 5 14 20 30 36 45 50 59 Outdoor Temp deg F Capacity Ratio 59 68 77 ...

Страница 12: ...Capacity Correction Factor Due to Tubing Length One Way Cooling Heating ...

Страница 13: ...Pressure Curve Suction Pressure Curve Discharge Pressure Curve ...

Страница 14: ...ower supply wiring No x cross section 1 X 3 X 2 5 mm2 Interconnecting cable No x cross section 2 X 4 X 1 mm2 Model CMV V64T9AD Power Supply 1 PH 230VAC 60Hz Connected to Outdoor Maximum Current 13 9A Inrush Current 40A Starting Current 1A Circuit breaker 20A Power supply wiring No x cross section 1 X 3 X 2 5 mm2 Interconnecting cable No x cross section 2 X 4 X 1 mm2 ...

Страница 15: ...4 OUTLINE DIMENSION OF OUTDOOR AND INDOOR 4 1 Outline dimension of outdoor Units CMV 50V9A S CMV V64T9AD ...

Страница 16: ...4 2 The outdoor unit mounting dimensions the body s dimension mounting dimensions Dimension s Code outdoor unit s type A B C D E CMV 50V9A S 930 362 700 590 334 CMV V64T9AD 958 388 835 600 358 ...

Страница 17: ...4 3 The indoor unit mounting dimensions the unit mm the body s dimension mounting dimensions Dimension s Code Indoor unit s type A B C D E F CMV V25G9A A 790 270 180 490 CMV V32G9A H 940 270 180 490 ...

Страница 18: ...5 The outdoor unit structure exploded view 5 1 The structure exploded view for CMV 50V9A S ...

Страница 19: ......

Страница 20: ...5 2 The structure exploded view for CMV V64T9AD ...

Страница 21: ......

Страница 22: ...alfunction 1 when indoor unit live wire is disconnected its lamp panel can t display Live wire is off 2 when the transformer s secondary and primary disconnect or indoor fuse is off the indoor unit lamp panel can t display Transformer secondary is off Transformer primary is off The relevant transfomer primary socket ...

Страница 23: ...e condition that the lamp panel can t display 3 1 when the indoor null line is off the system displays F1 code 2 when indoor communication wire is off the system also displays F1 code The inserted slice to null line The indoor unit null line is off ...

Страница 24: ...the indoor lamp panel displays F1 code 4 when indoor fan mainline or feedback wire is off the indoor lamp panel displays F4 code After directly insert it well To restart the unit to recover normal Indoor fan mainline is off The relevant socket with indoor fan mainline ...

Страница 25: ...sor has the problem the lamp will display F2 F3 code When indoor coil outlet inlet and middle temperature sensor appear malfunction the lamp panel displays F3 code when indoor temperature sensor appears fault the lamp panel shows F2 fault code Indoor temperature sensor plug the relevant socket of indoor temperature sensor plug ...

Страница 26: ... displays F2 F3 fault code 6 when outdoor temperature sensor is off or loose contact the indoor lamp panel displays F6 fault code the relevant socket of outdoor temp sensor The outdoor temperature sensor is off or loose contact ...

Страница 27: ... code the indoor lamp panel shows d1 code 8 when the system is in the defrosting condition The lamp panel displays dF code The lamp panel displays dF code Ⅱ The outdoor electrical control fault code of the America 12K model 1 the outdoor module temperature sensor is off or loose contact the lamp panel shows F6 code ...

Страница 28: ... sensor is off or loose contact the relevant socket with the outdoor module temperature sensor plug The lamp panel shows F6 code 2 The outdoor unit DC busbar voltage is abnormal the lamp panel shows F7code The P N power wire are off ...

Страница 29: ...or module drive wire is off the lamp panel shows FC code The outdoor module drive wire is off The matching socket with the outdoor module drive wire The matching socket with the outdoor module drive wire The outdoor module drive wire is off ...

Страница 30: ...p panel shoes F1 code the wave filtering board and mainboard power wire is off or loose contact The matching socket with the wave filtering board and mainboard power wire the lamp panel shoes F1 code 5 the evaporator middle temperature and condenser middle temperature sensor is off the lamp panel displays P8 code ...

Страница 31: ...the evaporator middle temperature and condenser middle temperature sensor is off the lamp panel displays P8 code ...

Страница 32: ... anti cold air The timing lamp lightens 1 time and then extinguish 1 second The outdoor unit faulty display Faulty contents Trouble display the outdoor unit transducer module protection faulty The timing lamp lightens all the time the turbo lamp lightens 2 times and then extinguish 2 seconds over current of outdoor unit The timing lamp lightens all the time the turbo lamp lightens 3 times and then...

Страница 33: ... cold air The running lamp lightens 1 time and then extinguish 1 second Faulty contents Trouble display the outdoor unit transducer module protection faulty The running lamp lightens all the time the sleeping lamp lightens 2 times and then extinguish 2 seconds over current of outdoor unit The running lamp lightens all the time the sleeping lamp lightens 3 times and then extinguish 2 seconds discha...

Страница 34: ...When the 1 and 2 are both normal then the component or integrated circuit is damaged the electric control board should be replaced F4 Indoor PG motor fault tap motor hasn t so breakdown 1 Check whether the contact of the plug of the motor wire and socket is well Please make sure it is well contacted 2 Check whether the indoor motor has damaged the motor should be replaced when it is damaged 3 Chec...

Страница 35: ...n check whether the operation of the compressor is normal 2 Check whether the connection of the compressor is correct or reliable otherwise repair it 3 Check whether the components on the electric control board have been damaged if they are damaged the components or the electric control board should be replaced 4 Check whether the connecting wires are disentwined between the Intelligent Power Modu...

Страница 36: ...le temperature over temperature 1 Check whether the pressure is normal when the unit is running if it is abnormal you should detect the leakage and then welding and adding refrigerant 2 Check whether the ambient temperature is too high or too low when the temperature is more than 20 degrees and less 55 degrees it can disappear automatically 3 Check whether temperature switch of compressor is damag...

Страница 37: ...e normal if abnormal please replace the sensor 3 If the above are normal check whether the main control board s output parameters are normal f abnormal please replace the main control board PE EEPROM reading error outdoor unit 1 Check whether there are false weld and bad contact etc between the EEPROM chip block and the electronic control board 2 Check whether the EEPROM chip pin is broken foot an...

Страница 38: ...door PCB has been damaged pls change it N The outdoor PCB fault check whether the communication circuit on the outdoor PCB has been damaged check especially some important electric parts such as the optical coupler voltage stabilizing diode resistor PTC and so on Pls replace the PCB if being abnormal Fig 3 The faulty cause 1 the communication wire is broken off or connected wrongiy 2 the power gro...

Страница 39: ...lowing The voltage of the cross flow fan feedback end will be increased gradually from 0 to 2 4VDC when turning on the indoor unit PTC1 resistance value 1 02KΩ 25 The limited current resistance value 14 8 kΩ The voltage stabilizing diode ZD1 ZD2 reference value Forward resisitance 713 Ω reverse resistance ...

Страница 40: ...e value is 0Ω N The indoor temperature sensor adapter connector breaks off pls replace the indoor PCB or restore the adapter connector Y The indoor PCB is bad please change it PTC1 resistance value 1 02KΩ 25 The limited current resistance value R54 0 76kΩ R58 2 kΩ Faulty cause 1 maybe the indoor temp sensor s bnc connector plugs is loose or contact ill 2 the sensor is bad or the down lead is circu...

Страница 41: ...nding is 273Ω the auxiliary winding is 343Ω Fig 6 fi N The indoor fan motor is bad then please change it Y connect the motor plug with the indoor PCB again and turn on Then test the feedback terminal to ground wire voltage whether it is normal the normal voltage is increased gradually from 0 to 2 4VDC N The indoor fan motor is bad then please change it Y The indoor PCB is bad please change it Chec...

Страница 42: ...and the indoor PCB terminal resistance The normal value is 0Ω N The indoor temperature sensor adapter connector is loose Change this indoor PCB or repair this adapter connector Y The indoor PCB is bad please change it Faulty cause 1 maybe the indoor coil temp sensor s bnc connector plugs is loose or contact ill 2 the sensor is bad or the down lead is circuit break circuit short 3 the indoor PCB s ...

Страница 43: ...is bad please change it The wire controller s hardware is bad please change it Test the wire controller to the ground wire voltage whether it is 5VDC Fig 7 Whether the light of the wire controller is bright The indoor PCB is bad then change it The indoor PCB is bad then change it The faulty cause 1 the wire controller s connecting plug is loose or contacts ill 2 the wire controller s hardware has ...

Страница 44: ...452Ω T S0 452Ω R S0 452Ω N The compressor is bad then change it The intelligent power module is bad and then change it Y The faulty cause 1 the compressor s connecting wiring is loose 2 the IPM module and radiator are not firm 3 the IPM board has the fault 4 the compressor is bad The dynatron Q3 reference value be pole The positive pole resistance 660Ω the negative pole resistance 961Ω bc pole The...

Страница 45: ...igh pressure 3 06Mpa low pressure 1 6Mpa when the A C unit operate Y The faulty cause 1 the ambient temp exceed the temp range of the A C s running 2 the outdoor PCB s hardware is bad The faulty cause 2 the compressor crustal temp switch has been damaged 3 outdoor ambient temp go beyond the limited 4 compressor discharge temp is overhigh 5 module temp go beyond the limited Turn on the unit Check t...

Страница 46: ...e is in the normal voltage range 150V 270V Y The IPM basic board hardware has been damaged pls change the IPM basic board Turn off the power Check whether the high and low pressure valve are open N Open the high and low pressure valve 正常 Check whether the system pressure is normal the normal value high pressure3 06Mpa low pressure1 6Mpa N Due to refrigerant leakage kook for the leak to weld it the...

Страница 47: ...should aim at the valve port Fig 9 please make sure that there is enough soap bubble Warning please connecting the indoor and outdoor units according to the correct installing method Fig 11 15 show the right operating way Note the indicator pictures aren t the real photos about the DC inverter dual zone unit Fig 10 Pls daub the bubble to four terminals then observe them for five minutes If there a...

Страница 48: ...rcles by hand it is possible that the bell mouth doesn t aim at the valve port and then operate it again from scratch Fig 13 screw down the nut gradually by hand Fig 15 Next please screw the nut by the spanner Fig 16 screw the nut to this place by hand and it can t be moved then force to screw the nut by the spanner Fig 17 forcing to screw the nut by spanner results in the rupture of the bell mout...

Страница 49: ...ber 3 in the U type pipe at the middle of the condenser Fig 21 the outdoor ambient temp sensor pipe number 2 locating on the condenser s back Fig 18 the compressor s discharge temp sensor no pipe No locating on the compressor s outlet gas about 5 CM Fig 19 the compressor s suction temp sensor pipe number 4 locating on the Shock Absorbers piece above 5CM Fig 20 the outdoor condensing temp sensor pi...

Страница 50: ... start up moment isn t enough because of the first running This is a normal Y Check the contacting wire of compressor whether it is right or credible N Pls contact the wire exactly again according to picture if there is a mistake The component of IPM board is bad Pls change it N Pls connect the IPM board to the PCB exactly Whether is running after turning on Y The wire connecting the IPM board to ...

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