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Indoor Unit Disassembly 15

2.5 Step motor

Note: Remove the front panel and electrical parts (refer to 1. Front panel, 2. Electrical parts) before
disassembling step motor.

Procedure

Illustration

1) Remove the two screws, then remove

the horizontal swing motor(see CJ_AG_
INV_025).

2) Remove 1 screw, then remove the vertical

swing motor (see CJ_AG_INV_026).(for
some units)

3) Remove 1 screw, then remove the ionizer

generator (see CJ_AG_INV_026).(for some
units)

CJ_AG_INV_025

CJ_AG_INV_026

Note: This section is for reference only. Actual unit appearance may vary.

Stepping Motor

Ionizer generator

Stepping Motor

Service manual

H11 series

Содержание MUPR-09-H11-E

Страница 1: ...Service manual MUPR H11 www mundoclima com CL20055 CL20058 R32...

Страница 2: ...trical Wiring Diagrams Product Features 1 Display Function 2 Safety Features 3 Basic Features 4 Optional Features Maintenance 1 First Time Installation Check 2 Refrigerant Recharge 3 Re Installation I...

Страница 3: ...gnosis and Troubleshooting Without Error Code 6 Quick Maintenance by Error Code 7 Troubleshooting by Error Code 8 Check Procedures Appendix i Temperature Sensor Resistance Value Table for T1 T2 T3 and...

Страница 4: ...Contents 1 Precautions 2 2 Information servicing For flammable materials 3 Safety Precautions Service manual H11 series...

Страница 5: ...ork For more information contact your dealer seller or an authorized service center CAUTION x While unpacking be careful of sharp edges around the unit as well as the edges of the fins on the con dens...

Страница 6: ...he area around the equipment is to be surveyed to make sure that there are no ammable hazards or ignition risks NO SMOKING signs shall be displayed 2 7 Ventilated area Ensure that the area is in the o...

Страница 7: ...rigerant in the atmosphere from a leak 2 12 Cabling Check that cabling will not be subject to wear corrosion excessive pressure vibration sharp edges or any other adverse environmental effects The che...

Страница 8: ...med refrigerant It is essential that electrical power is available before the task is commenced Become familiar with the equipment and its operation Isolate system electrically Before attempting the p...

Страница 9: ...rical components are sealed to prevent ignition in the event of a refrigerant release Consult manufacturer if in doubt The recovered refrigerant shall be returned to the refrigerant supplier in the co...

Страница 10: ...Contents 1 Model Reference 2 2 Pipe Length and Drop Height 3 3 Electrical Wiring Diagrams 4 Specifications Service manual H11 series...

Страница 11: ...nd outdoor unit model e Speci cations 2 f Service manual H11 series Indoor Unit Model Outdoor Unit Model Capacity Btu h Power Supply 9k 220 240V 50Hz 1Phase 12k 18k MUPR 09 H11 I 24k MUPR 12 H11 E MUP...

Страница 12: ...ion or deterioration of oil return Oil traps in the rising gas pipe can prevent this 1 Indoor unit is installed higher than outdoor unit 2 Outdoor unit is installed higher than indoor unit If indoor u...

Страница 13: ...019533 16022000003662 16022000B13817 Outdoor unit printed circuit board diagram Outdoor Unit ODU Model ODU Printed Circuit Board 17122000048121 17122000048064 e Specifications 4 f Service manual H11 s...

Страница 14: ...Capacitor PLASMA Electronic Dust Collector L LIVE N NEUTRAL Outdoor unit abbreviations Abbreviation Paraphrase 4 WAY Gas Valve Assembly 4 WAY VALVE AC FAN Alternating Current FAN DC FAN Direct Curren...

Страница 15: ...dby control feature X Y E 12V 5V HA HB To CCM Comm Bus or 485 Wire controller To Randomly Connected Wire controller To Remote Switch To Remote Alarm 4 3 This symbol indicates the element is optional t...

Страница 16: ...Service manual H11 series MUPR 24 H11 I Specifications 7f e...

Страница 17: ...Outdoor unit wiring diagram 16022000019533 Service manual H11 series MUPR 09 12 18 H11 E Specifications 8 f e...

Страница 18: ...Service manual H11 series MUPR 24 H11 E Specifications 9 f e...

Страница 19: ...R105 R104 R103 R102 C612 C133 C129 C128 C124 C123 C121 C120 C118 C116 C111 C101 IC105 Q601 C303 R695 C309 R603 CN50 C5 CN1A R26 R24 R22 CN15 C134 R15 R16 R630 R627 R200 D605 C617 R9 R8 R7 R5 R3 CN21...

Страница 20: ...eater 208 230V AC when is ON 5 AC FAN CN25 connect to AC fan 6 PMV CN31 connect to Electric Expansion Valve 7 TESTPORT CN6 used for testing 8 TP T4 T3 CN21 CN22 connect to pipe temp sensor T3 ambient...

Страница 21: ...Outdoor unit printed circuit board diagram 17122000048064 Service manual H11 series MUPR 24 H11 E Specifications 12f e...

Страница 22: ...connect to pipe temp sensor T3 ambient temp sensor T4 exhaust temp sensor TP 7 PMV CN18 connect to Electric Expansion Valve 8 HEAT1 CN16 connect to compressor heater 208 230V AC when is ON 9 DC FAN CN...

Страница 23: ...Operation Function 7 3 8 Timer Function 7 3 9 Sleep Function 7 3 10 Auto Restart Function 8 3 11 Active Clean function 8 3 12 Follow me Optional 8 3 13 8 C Heating Optional 8 3 14 Silence Optional 8 3...

Страница 24: ...mer When TIMER is on WiFi control available on select units only Temperature value Temperature 3s Activation of Timer ON Fresh Swing Turbo or Silent 3s Cancellation of Timer OFF Fresh Swing Turbo or S...

Страница 25: ...omatic shutoff mechanism based on the unit s current voltage and temperature If automatic shutoff is initiated the corresponding error code is displayed on the indoor unit and the unit ceases operatio...

Страница 26: ...atis ed the compressor ceases operation Calculated frequency fb is less than minimum limit frequency FminC Compressor runs at FminC more than 10 minutes T1 is lower than or equal to Tsc CDIFTEMP Note...

Страница 27: ...nH Compressor runs at FminH more than 10 minutes T1 is higher than or equal to Tsc HDIFTEMP2 Note HDIFTEMP2 is EEPROM setting parameter It is 2 C usually If one of the following conditions is satis ed...

Страница 28: ...ng conditions is satis ed defrosting ends and the machine switches to normal heating mode T3 rises above TCDE1 C T3 maintained above TCDE2 C for 80 seconds Unit runs for 15 minutes consecutively in de...

Страница 29: ...normal defrosting turn off by RC Press AUTO COOL button continuously for 5s again 3 8 Timer function Timing range is 24 hours Timer on The machine will turn on automatically when reaching the setting...

Страница 30: ...perature based on its own sensor and settings 3 13 8 C Heating Optional In heating mode the temperature can be set to as low as 8 C preventing the indoor area from freezing if unoccupied during severe...

Страница 31: ...ptional Wireless control allows you to control your air conditioner using your mobile phone and a Wireless connection For the USB device access replacement maintenance operations must be carried out b...

Страница 32: ...Contents 1 First Time Installation Check 2 2 Refrigerant Recharge 4 3 Re Installation 5 3 1 Indoor Unit 5 3 2 Outdoor Unit 7 Maintenance Service manual H11 series...

Страница 33: ...ecting the air conditioner s performance the indoor unit as well as the pipes between the indoor and outdoor unit must be be leak tested and evacuated Leak test soap water method Use a soft brush to a...

Страница 34: ...ditional 20 minutes If the pressure does not achieve 0 1 MPa 14 5 Psi after 50 minutes check for leakage If the pressure successfully reaches 0 1 MPa 14 5 Psi fully close the Handle Lo valve then ceas...

Страница 35: ...rge hose then fully tighten the charge hose with push pin Handle Lo to the service port of 3 way valve 6 Place the charging cylinder onto an electronic scale and record the starting weight 7 Fully ope...

Страница 36: ...e port 3 Open the Handle Lo manifold valve to purge air from the charge hose for 5 seconds and then close it quickly 4 Close the 2 way valve 5 Operate the air conditioner in cooling mode Cease operati...

Страница 37: ...MPa 14 5 Psi If the meter does not indicate 0 1 MPa 14 5 Psi after 30 minutes continue evacuating for an additional 20 minutes If the pressure does not achieve 0 1 MPa 14 5 Psi after 50 minutes check...

Страница 38: ...roximately one hour Con rm that the compound meter indicates 0 1 MPa 14 5Psi 4 Close the valve Low side on the charge set and turn off the vacuum pump 5 Wait for 5 minutes then check whether the gauge...

Страница 39: ...a complete liquid charge 5 Open the valve at the bottom of the cylinder for 5 seconds to purge the air in the charge hose then fully tighten the charge hose with push pin Handle Lo to the service port...

Страница 40: ...Dimension 2 2 Indoor Unit Disassembly 3 2 1 Front Panel 3 2 2 Electrical parts 9 2 3 Evaporator 11 2 4 Fan motor and fan 13 2 5 Step motor 15 2 6 Drain Hose 16 Indoor Unit Disassembly Service manual...

Страница 41: ...e Indoor Unit Disassembly 2 f 1 Dimension Capacity Body Code W mm D mm H mm 9K A 726 210 291 12K B 835 208 295 18K C 969 241 320 24K D 1083 244 336 Service manual H11 series...

Страница 42: ...t panel by the tabs on the both sides and lift it see CJ_AG_ INV_001 2 Push up the bottom of an air lter step 1 and then pull it out downwards step 2 see CJ_AG_ INV_002 CJ_AG_INV_001 CJ_AG_INV_002 Not...

Страница 43: ...eft to open it see CJ_AG_INV_003 4 Bend the horizontal louver lightly by both hands to loosen the hooks then remove the horizontal louver see CJ_AG_INV_003 CJ_AG_INV_003 CJ_AG_INV_004 Note This sectio...

Страница 44: ...t towars left then remove it see CJ_AG_INV_005 6 Disconnect the connector for display board see CJ_AG_INV_006 7 Slid the front panel side to side to release each axis see CJ_AG_INV_006 CJ_AG_INV_005 C...

Страница 45: ...tion 8 Open the screw cap and then remove the 3 screws see CJ_AG_INV_008 9 Release the hooks with hands see CJ_AG_INV_008 CJ_AG_INV_007 CJ_AG_INV_008 Note This section is for reference only Actual uni...

Страница 46: ...ack see CJ_AG_INV_009 11 Pull out the panel frame while pushing the hook through a clearance between the panel frame and the heat exchanger see CJ_AG_INV_010 CJ_AG_INV_009 CJ_AG_INV_010 Note This sect...

Страница 47: ...blades rightward and remove it see CJ_AG_ INV_011 13 Remove 1 screw of the display board see CJ_AG_INV_012 14 Rotate the display board in the direction shown in the right picture see CJ_AG_INV_012 CJ_...

Страница 48: ...he electrical control box components perform the rst step If you want to repair the main control board assembly perform steps 2 to 5 below 2 Cut the ribbon by a shear then pull out the coil temperatur...

Страница 49: ...direction indicated in right image see CJ_AG_INV_015 5 Disconnect the connectors and remove main control board see CJ_AG_ INV_016 CJ_AG_INV_015 CJ_AG_INV_016 Note This section is for reference only A...

Страница 50: ...fore disassembling evaporator Procedure Illustration 1 Disassemble the pipe holder located at the rear of the unit see CJ_AG_INV_017 2 Remove the 1 screws on the evaporator located at the xed plate se...

Страница 51: ...evaporator see CJ_AG_INV_019 4 Remote the 2 screws on the evaporator located at the xed plate see CJ_AG_ INV_020 5 Pull out the evaporator see CJ_AG_ INV_021 CJ_AG_INV_019 CJ_AG_INV_020 CJ_AG_INV_021...

Страница 52: ...arts and 3 Evaporator before disassembling fan motor and fan Procedure Illustration 1 Remove the two screws and remove the xing board of the fan motor see CJ_AG_ INV_022 2 Remove the bearing sleeve se...

Страница 53: ...e Illustration 3 Remove the xing screw see CJ_AG_ INV_024 4 Pull out the fan motor and fan assembly from the side CJ_AG_INV_024 Note This section is for reference only Actual unit appearance may vary...

Страница 54: ...screws then remove the horizontal swing motor see CJ_AG_ INV_025 2 Remove 1 screw then remove the vertical swing motor see CJ_AG_INV_026 for some units 3 Remove 1 screw then remove the ionizer generat...

Страница 55: ...ation 1 Rotate the xed wire clockwise indicated in right image see CJ_AG_INV_027 2 Pull up the drain hose to remove it see CJ_AG_INV_028 CJ_AG_INV_027 CJ_AG_INV_028 Note This section is for reference...

Страница 56: ...Dimension 3 3 Outdoor Unit Disassembly 17 3 1 Panel Plate 17 3 2 Electrical Parts 42 3 3 Fan Assembly 59 3 4 Fan Motor 60 3 5 Sound blanket 61 3 6 Four way valve 62 3 7 Compressor 63 Outdoor Unit Disa...

Страница 57: ...door Unit Disassembly 1 1 Outdoor Unit Table Outdoor Unit Model Panel Plate PCB Board X101 PCB Board 9 PCB Board 9 X301 PCB Board 9 X401 PCB Board 6 Service manual H11 series MUPR 09 H11 E MUPR 12 H11...

Страница 58: ...e Outdoor Unit Disassembly 3 f 1 Panel Plate X101 Service manual H11 series MUPR 09 12 H11 E 2 Dimension...

Страница 59: ...e Outdoor Unit Disassembly 4 f 2 Panel Plate X301 Service manual H11 series MUPR 18 H11 E...

Страница 60: ...e Outdoor Unit Disassembly 5 f 3 Panel Plate X401 Service manual H11 series MUPR 24 H11 E...

Страница 61: ...big handle 1 screws see CJ_X101_001 3 Remove the screws of the top cover and then remove the top cover 3 screws One of the screws is located underneath the big handle see CJ_ X101_002 CJ_X101_001 CJ_X...

Страница 62: ...ting cover 2 screws see CJ_ X101_003 5 Remove the screws of the front panel and then remove the front panel 6 screws onoff models or 8 screws inverter models see CJ_ X101_004 CJ_X101_003 CJ_X101_004 N...

Страница 63: ...dure Illustration 6 Remove the screws of the right panel and then remove the right panel 5 screws see CJ_X101_005 CJ_X101_005 Note This section is for reference only Actual unit appearance may vary Ri...

Страница 64: ...d then remove the big handle 1 screws see CJ_X201_001 3 Remove the screws of the top cover and then remove the top cover 4 screws One of the screws is located underneath the big handle see CJ_ X201_00...

Страница 65: ...cting cover 2 screws see CJ_ X201_003 5 Remove the screws of the front panel and then remove the front panel 7 screws onoff models or 9 screws inverter models see CJ_ X201_004 CJ_X201_003 CJ_X201_004...

Страница 66: ...edure Illustration 6 Remove the screws of the right panel and then remove the right panel 5 screws see CJ_X201_005 CJ_X201_005 Note This section is for reference only Actual unit appearance may vary R...

Страница 67: ...then remove the big handle 1 screw see CJ_X401_001 3 Remove the screws of the top cover and then remove the top cover 3 screws One of the screws is located underneath the big handle see CJ_ X401_002 C...

Страница 68: ...cting cover 2 screw see CJ_ X401_003 5 Remove the screws of the front panel and then remove the front panel 6 screws onoff models or 8 screws inverter models see CJ_ X401_004 CJ_X401_003 CJ_X401_004 N...

Страница 69: ...edure Illustration 6 Remove the screws of the right panel and then remove the right panel 6 screws see CJ_X401_005 CJ_X401_005 Note This section is for reference only Actual unit appearance may vary R...

Страница 70: ...connects with terminal 4 see CJ_ODU_ PCB_001 3 Disconnect the wires connected to the compressor Black wire connects with terminal 1 blue wire and red wire connect with the compressor capacitor see CJ_...

Страница 71: ...refrigeration control board remove 3 screws of it showed in the gure 9 The subzero refrigeration control board is in the back of the medal sheet CJ_ODU_PCB_001 03 CJ_ODU_PCB_001 04 Note This section...

Страница 72: ...red wire is on the borad see CJ_ODU_PCB_002 1 3 Disconnect the wires connected to 4 way valve see CJ_ODU_PCB_002 1 4 Disconnect the wires connected to the transformer see CJ_ODU_ PCB_002 1 5 Disconnec...

Страница 73: ...compressor see CJ_ODU_ PCB_003 3 Disconnect the wires connected to Pipe temperature sensor see CJ_ ODU_PCB_003 4 Disconnect the earth wire see CJ_ ODU_PCB_003 5 Remove the PCB board see CJ_ODU_ PCB_00...

Страница 74: ...for the compressor see CJ_ODU_PCB_004 3 5 Pull out the two blue wires connected with the four way valve CJ_ODU_PCB_004 3 6 Pull out connectors of the condenser coil temp sensor T3 outdoor ambient temp...

Страница 75: ...he two blue wires connected with the four way valve see CJ_ODU_PCB_005 2 5 Pull out connectors of the condenser coil temp sensor T3 outdoor ambient temp sensor T4 and discharge temp sensor TP see CJ_...

Страница 76: ...l out the two blue wires connected with the four way valve see CJ_ODU_PCB_006 2 5 Pull out connectors of the condenser coil temp sensor T3 outdoor ambient temp sensor T4 and discharge temp sensor TP s...

Страница 77: ...the electronic control box cover 5 hooks see CJ_ODU_PCB_007 2 3 Disconnect the connector for fan motor from the IPM board see CJ_ ODU_PCB_007 3 4 Remove the connector for the compressor see CJ_ODU_PCB...

Страница 78: ...see CJ_ODU_PCB_007 4 7 Disconnect the electronic expansion valve wire see Fig CJ_ODU_PCB_007 4 8 Remove the connector for 4 way valve see Fig CJ_ODU_PCB_007 4 9 Remove the connector for the reactor se...

Страница 79: ...four way valve see CJ_ODU_PCB_008 2 5 Pull out connectors of the condenser coil temp sensor T3 outdoor ambient temp sensor T4 and discharge temp sensor TP see CJ_ ODU_PCB_008 2 6 Disconnect the elect...

Страница 80: ...Pull out the wires from electrical supporting plate and turn over the electronic control assembly see CJ_ODU_PCB_009 2 3 Remove the electronic installing box subassembly 4 hooks see CJ_ODU_ PCB_009 3...

Страница 81: ...4 5 Disconnect the connectors from the electronic control board see CJ_ODU_PCB_009 5 6 Then remove the electronic control board 4 hooks see CJ_ODU_ PCB_009 6 CJ_ODU_PCB_009 4 CJ_ODU_PCB_009 5 CJ_ODU_P...

Страница 82: ...lectronic control box cover 4 hooks see CJ_ODU_PCB_010 1 2 Remove 4 screws on the electronic control board and then turn over the electronic control board see CJ_ODU_PCB_010 2 CJ_ODU_PCB_010 1 CJ_ODU_...

Страница 83: ...the 3 hooks and then remove the electronic control board see CJ_ ODU_PCB_010 3 5 Remove two screws and then remove the electronic control box subassembly on partition board assembly see CJ_ODU_PCB_010...

Страница 84: ...dure Illustration 6 Remove two screws and two connectors and then remove the inverter control board see CJ_ODU_ PCB_010 5 CJ_ODU_PCB_010 5 Note This section is for reference only Actual unit appearanc...

Страница 85: ...PCB_0011 1 2 Pull out the wires from electrical supporting plate and turn over the electronic control assembly see CJ_ODU_PCB_011 2 3 Remove the electronic installing box subassembly 4 hooks see CJ_OD...

Страница 86: ...4 5 Disconnect the connectors from the electronic control board see CJ_ODU_PCB_011 5 6 Then remove the electronic control board 4 hooks see CJ_ODU_ PCB_011 6 CJ_ODU_PCB_011 4 CJ_ODU_PCB_011 5 CJ_ODU_P...

Страница 87: ...refer to 3 1 Panel Plate before disassembling fan Procedure Illustration 1 Remove the nut securing the fan with a spanner see CJ_ODU_ FAN_001 2 Remove the fan CJ_ODU_FAN_001 Note This section is for r...

Страница 88: ...refer to 3 1 Panel Plate and 3 2 Electrical parts before disassembling fan motor Procedure Illustration 3 Remove the xing screws of the fan motor 4 screws see CJ_ODU_MOTOR_001 4 Remove the fan motor C...

Страница 89: ...ng sound blanket Procedure Illustration 1 Remove the sound blanket side and top see CJ_ODU_BLANKET_001 CJ_ODU_BLANKET_001 Note This section is for reference only Actual unit appearance may vary Sound...

Страница 90: ...rts The operations above should be implemented by professionals Note Remove the panel plate connection of four way valve on PCB refer to 3 1 Panel plate and 3 2 Electrical parts before disassembling s...

Страница 91: ...ove should be implemented by professionals Note Remove the panel plate connection of compressor on PCB refer to 3 1 Panel plate and 3 2 Electrical parts before disassembling sound blanket Procedure Il...

Страница 92: ...brazed parts and then remove the the discharge pipe and the suction pipe see CJ_ODU_COMP_004 5 Lift the compressor from the base pan assembly with pliers CJ_ODU_COMP_003 CJ_ODU_COMP_004 Note This sect...

Страница 93: ...lution TS02 Indoor and Outdoor Unit Communication Error Diagnosis and Solution TS03 Zero crossing Signal Detection Error Diagnosis and Solution TS04 Fan Speed is Operating Outside of The Normal Range...

Страница 94: ...sure Protection Diagnosis and Solution TS12 Inverter Compressor Drive Error Diagnosis and Solution TS13 Low Pressure Protection Diagnosis and Solution TS14 Indoor units mode con ic Diagnosis and Solut...

Страница 95: ...d damage to the board WARNING Electricity remains in capacitors even when the power supply is off Ensure the capacitors are fully discharged before troubleshooting Test the voltage between P and N on...

Страница 96: ...or unit EEPROM parameter error TS01 ODU 5 times OFF EC 52 Condenser coil temperature sensor T3 is in open circuit or has short circuited TS05 ODU 5 times OFF EC 53 Outdoor room temperature sensor T4 i...

Страница 97: ...iven chip TS33 7 times FLASH PC 03 Low pressure protection TS13 INV 1 times ON Indoor units mode con ict match with multi outdoor unit TS14 For other errors The display board may show a garbled code o...

Страница 98: ...tion Information Indoor temperature C F Indoor humidity RH Outdoor temperature C F Outdoor humidity RH Length of Connecting pipe Pipe diameter Gas pipe Liquid pipe Length of Wiring wire diameter Syste...

Страница 99: ...erature T4 Ambient temperature TP Discharge temperature FT Targeted Frequency Fr Actual Frequency dl Compressor current Uo Outdoor AC voltage Sn Indoor capacity test Reserve Pr Outdoor fan speed Lr EX...

Страница 100: ...nformation codes The screen displays this code for 1 2 seconds then the information for 25 seconds Displayed code Explanation Additional Notes Error code Refer to next list of error code T1 T1 T1 temp...

Страница 101: ...oor room temperature sensor T1 is in open circuit or has short circuited Eh 61 Evaporator coil temperature sensor T2 is in open circuit or has short circuited EC 07 The outdoor fan speed is operating...

Страница 102: ...ator coil temperature over high protection PH 91 Evaporator coil temperature over low Protection LC 05 Frequency limit caused by voltage LC 03 Frequency limit caused by current LC 02 Frequency limit c...

Страница 103: ...s before eld maintenance No Problem Solution 1 Unit will not start 13 14 2 The power switch is on but fans will not start 13 14 3 The temperature on the display board cannot be set 13 14 4 Unit is on...

Страница 104: ...rt 15 16 5 Condenser Outdoor fan will not start 15 16 6 Unit runs but shortly stops 15 16 7 Compressor short cycles due to overload 15 16 8 High discharge pressure 15 16 9 Low discharge pressure 15 16...

Страница 105: ...nit will not start The power switch is on but fans will not start The temperature on the display board cannot be set Unit is on but the wind is not cold hot Unit runs but shortly stops The unit starts...

Страница 106: ...n but fans will not start The temperature on the display board cannot be set Unit is on but the wind is not cold hot Unit runs but shortly stops The unit starts up and stops frequently Unit runs conti...

Страница 107: ...s run Compressor and condenser outdoor fan will not start Evaporator indoor fan will not start Condenser Outdoor fan will not start Unit runs but shortly stops Compressor short cycles due to overload...

Страница 108: ...utdoor fan will not start Unit runs but shortly stops Compressor short cycles due to overload High discharge pressure Low discharge pressure High suction pressure Low suction pressure Unit runs contin...

Страница 109: ...x x x x x x x x Reactor x x x x x x x x x Compressor x x x x x x x x x Additional refrigerant x x x x x x x x x Part requiring replacement EC 53 EC 52 EC 54 EC 51 EC 07 PC 00 PC 01 PC 02 PC 03 PC 04...

Страница 110: ...2 minutes later Is it still displaying the error code YES Replace the indoor main PCB The unit is operating normally NO Remarks EEPROM A read only memory whose contents can be erased and reprogrammed...

Страница 111: ...Is it still displaying the error code YES Replace the outdoor main PCB The unit is operating normally NO Remarks EEPROM A read only memory whose contents can be erased and reprogrammed using a pulsed...

Страница 112: ...ter AC fan one by one to check their resistance Is there any component short circuit Unplug electronic expansion valve Check if power LED is on No No Check the AC voltage of L N output to IPM board is...

Страница 113: ...es If the outdoor unit has malfunction the voltage has always been the positive value While if the indoor unit has malfunction the voltage has always been a certain value Use a multimeter to test the...

Страница 114: ...epare Connection wires Indoor main PCB Troubleshooting and repair Check the connections and power supply Correct the connections Turn on the unit when the power supply is good NO Indoor main PCB is de...

Страница 115: ...hooting and repair YES Power off then restart the unit after 2 minutes Is it within normal parameters Replace the fan motor Does a problem remain The unit is operating normally NO Shut off the power s...

Страница 116: ...t has problems and need to be replaced DC motor voltage input and output voltage 220 240V No Color Signal Voltage 1 Red Vs Vm 192V 380V 2 3 Black GND 0V 4 White Vcc 13 5 16 5V 5 Yellow Vsp 0 6 5V 6 Bl...

Страница 117: ...Service manual H11 series e f Troubleshooting 25...

Страница 118: ...s it within normal parameters Replace the fan motor Does a problem remain The unit is operating normally NO Shut off the power supply Rotate the fan by hand YES Does it turn easily Find the cause of t...

Страница 119: ...not equal to each other the fan motor must has problems and need to be replaced Otherwise go to step 2 2 Power on and when the unit is in standby measure the voltage of pin4 5 in feedback signal conn...

Страница 120: ...ion wires Sensors Indoor main PCB Troubleshooting and repair Check the connection between temperature sensor and PCB Replace the indoor main PCB Is it within acceptable parameters Is it properly wired...

Страница 121: ...nd PCB Replace the outdoor main PCB Is it within acceptable parameters Is it properly wired Ensure proper connections NO Measure the resistance value of the sensor YES Replace the sensor NO YES Note F...

Страница 122: ...the failure code and the AC turns off Recommended parts to prepare T2 sensor Indoor PCB Additional refrigerant Troubleshooting and repair Power off then restart the unit 2 minutes later Are any leakag...

Страница 123: ...oor PCB Display board Troubleshooting and repair Is it still displaying the error code The unit functions normally Check the wirings and connections Are all the connections good Replace the indoor mai...

Страница 124: ...ring Reconnect the wiring No Are the reactor and inductance functioning normally A d Are the reactor and inductance functioning normally Yes Replace reactor Replace reactor No Is the outdoor ambient t...

Страница 125: ...PCB Replace the IPM board or replace the outdoor PCB NO Check the outdoor fan and the outdoor unit ventilation Check the outdoor fan and the outdoor unit ventilation YES Is it in working order Is it...

Страница 126: ...connect power supply 2 Discharge electrolytic capacitors and ensure all energy storage unit has been discharged 3 Disassemble outdoor PCB or disassemble IPM board 4 Measure the resistance value betwee...

Страница 127: ...tance between U V V W and U W and all 3 values should be equal If not the compressor is faulty and should be replaced Note The picture and the value are only for reference actual condition and speci c...

Страница 128: ...and wires YES Are they in working order Ensure proper connections or replace the wires NO Power on and measure the voltage between P and N YES While the unit is in standby is the voltage between P and...

Страница 129: ...ing and repair Check if the air flow system of indoor and outdoor units are obstructed Clear up the air inlet and outlet or the heat exchanger of indoor and outdoor units Yes No Yes Yes Turn off the p...

Страница 130: ...Replace the outdoor control PCB Tighten the screws and apply silicon grease NO YES Note For certain models outdoor PCB could not be removed separately In this case the outdoor electric control box sh...

Страница 131: ...main board Is the problem resolved No High pressure protection High pressure protection Is the outdoor fan running properly Is the outdoor fan running properly No Yes NO Connect high pressure switch a...

Страница 132: ...ssor Is it improperly wired Ensure proper connections or replace the wires and connectors YES Check the IPM NO Is it functioning properly Replace the IPM board or replace the outdoor PCB NO Check the...

Страница 133: ...ssure switch cut off the system because low pressure is lower than 0 13 MPa the LED displays the failure code Recommended parts to prepare Connection wires Outdoor PCB Low pressure protector Refrigera...

Страница 134: ...erly in cooling mode Is the indoor fan running properly in cooling mode No Yes Yes No Check whether the refrigerant system is functioning properly Check whether the refrigerant system is functioning p...

Страница 135: ...is set to heating mode then A will change to off and B will work in heating mode Suppose Indoor unit A working in heating mode and indoor unit B is set to cooling mode or fan mode then B will change t...

Страница 136: ...control box Replace the electric control box Trouble is solved Trouble is solved YES Shut off the power supply and turn it on 2 minutes later Shut off the power supply and turn it on 2 minutes later I...

Страница 137: ...resistance value of the sensor using a multi meter 3 Check corresponding temperature sensor resistance value table Refer to Chapter 8 Appendix Note The picture and the value are only for reference act...

Страница 138: ...3UFZ KSN140D21UFZ KTF235D22UMT KSK103D33UEZ3 YJ KTM240D57UMT Blue Red 1 72 1 28 0 75 2 13 0 62 Blue Black Red Black Resistance Value KSN140D58UFZ KTM240D43UKT KSN98D64UFZ3 Blue Red 1 86 1 03 2 7 Blue...

Страница 139: ...itors and ensure all energy storage unit has been discharged 3 Disassemble outdoor PCB or disassemble IPM board 4 Measure the resistance value between P and U V W N U V W and N Digital tester Resistan...

Страница 140: ...10L YKFG 20 4 5 11 Brand Welling Welling Welling Welling Black Red Main 345 75 269 388 Blue Black AUX 348 150 224 360 Model YKFG 20 4 5 19 YKFG 25 4 6 14 YKFG 28 4 3 7 YKFG 28 4 3 14 YKFG 28 4 6 5 Br...

Страница 141: ...i Temperature Sensor Resistance Value Table for T1 T2 T3 and T4 C K 2 ii Temperature Sensor Resistance Value Table for TP for some units C K 3 iii Pressure On Service Port 4 Appendix Service manual H1...

Страница 142: ...243 0 38991 2 28 39 8239 38 100 5 62961 78 172 1 25423 118 244 0 37956 1 30 37 1988 39 102 5 39689 79 174 1 2133 119 246 0 36954 0 32 35 2024 40 104 5 17519 80 176 1 17393 120 248 0 35982 1 34 33 3269...

Страница 143: ...67 8 084 115 239 2 422 4 25 222 8 36 97 34 32 76 169 7 82 116 241 2 357 3 27 211 4 37 99 32 94 77 171 7 566 117 243 2 294 2 28 200 7 38 100 31 62 78 172 7 321 118 244 2 233 1 30 190 5 39 102 30 36 79...

Страница 144: ...0 10 6 12 4 13 0 PSI 70 59 21 11 15 93 94 106 116 119 113 117 125 147 154 75 63 23 89 17 22 97 99 115 125 124 120 126 132 155 162 80 67 26 67 19 44 103 104 123 138 135 129 132 140 162 173 90 73 32 22...

Страница 145: ...5 65 18 33 32 5 30 0 26 6 25 4 23 3 20 5 19 0 75 23 89 33 8 31 5 27 8 26 3 24 9 21 5 20 0 PSI 55 12 78 439 413 367 330 302 268 239 65 18 33 471 435 386 368 339 297 276 75 23 89 489 457 403 381 362 31...

Страница 146: ...SI 70 59 21 11 15 95 96 108 118 121 115 119 128 150 157 75 63 23 89 17 22 99 101 117 128 126 122 129 135 158 165 80 67 26 67 19 44 105 106 125 141 138 132 135 143 165 176 90 73 32 22 22 78 114 115 142...

Страница 147: ...8 65 18 33 33 2 30 6 27 1 25 9 23 8 20 9 19 4 75 23 89 34 5 32 1 28 4 26 8 25 4 21 9 20 4 PSI 55 12 78 448 421 374 337 308 273 244 65 18 33 480 444 394 375 346 303 282 75 23 89 499 466 411 389 369 318...

Страница 148: ...471 50 848 3350 33 5 485 75 53 935 129 083 1150 11 5 166 75 11 988 53 578 3400 34 493 54 593 130 267 1200 12 174 13 457 56 223 3450 34 5 500 25 55 243 131 437 1250 12 5 181 25 14 879 58 782 3500 35 5...

Страница 149: ...3 25 1 393 34 507 2600 26 377 41 977 107 559 900 9 130 5 3 209 37 777 2650 26 5 384 25 42 769 108 984 950 9 5 137 75 4 951 40 911 2700 27 391 5 43 55 110 39 1000 10 145 6 624 43 923 2750 27 5 398 75 4...

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