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Nobu NBL4-09IDU32, Service Manual, Page: 1 / 92

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Nobu NBL4-09IDU32 Service Manual Download Page 1

Wall Mounted Air-Conditioning Unit

 

 

English

NBL4-09IDU32 / NBL4-09ΟDU32

 

NBL4-12IDU32 / NBL4-12ΟDU32

 

MODELS

Wall Mounted Air-Conditioning Unit

Service Manual

Wall Mounted Air-Conditioning Unit

 

Summary of Contents for NBL4-09IDU32

Page 1: ...Wall Mounted Air Conditioning Unit English NBL4 09IDU32 NBL4 09 DU32 NBL4 12IDU32 NBL4 12 DU32 MODELS Wall Mounted Air Conditioning Unit Service Manual Wall Mounted Air Conditioning Unit...

Page 2: ...Service Manual...

Page 3: ...and Control 15 6 1 Remote Controller Introduction 15 6 2 Preparation before operation 15 6 3 Introduction of operation function 15 6 4 Introduction of special functions 17 6 5 Brief Description of Mod...

Page 4: ...rts List 99 10 1 Indoor Unit 99 10 2 Outdoor Unit 109 11 Removal Procedure 116 11 1 Removal Procedure of Indoor Unit 116 11 2 Removal Procedure of Outdoor Unit 126 Appendix 141 Appendix 1 Reference Sh...

Page 5: ...ical Information 1 Service Manual 1 Technical Information Service Manual Part Technical Information 1 Summary Indoor Unit NBL4 09IDU32 NBL4 12IDU32 Outdoor Unit NBL4 09 DU32 NBL4 12 DU32 Remote Contro...

Page 6: ...6 1 SCOP Average Warmer Colder W W 4 0 5 1 3 2 Application Area m2 12 18 Indoor Unit Indoor Unit Model NBL4 09IDU32 Fan Type Fan Diameter Length DXL mm 98X580 Cooling Speed SH H M L SL r min 1300 1200...

Page 7: ...Fan Motor Speed rpm 900 Fan Motor Power Output W 30 Fan Motor RLA A 0 36 Fan Motor Capacitor F Outdoor Unit Air Flow Volume m3 h 1600 Fan Type Fan Diameter mm 400 Defrosting Method Automatic Defrosti...

Page 8: ...SCOP Average Warmer Colder W W 4 0 5 1 3 4 Application Area m2 16 24 Indoor Unit Indoor Unit Model NBL4 12IDU32 Fan Type Fan Diameter Length DXL mm 98X633 5 Cooling Speed SH H M L SL r min 1350 1200...

Page 9: ...0 Fan Motor Speed rpm 900 Fan Motor Power Output W 30 Fan Motor RLA A 0 36 Fan Motor Capacitor F Outdoor Unit Air Flow Volume m3 h 2200 Fan Type Fan Diameter mm 438 Defrosting Method Automatic Defrost...

Page 10: ...ir flow Super High Pipe length 5m Outdoor temp C Condition Indoor DB27 C WB19 C Indoor air flow High Pipe length 5m Heating operation ambient temperature range is 15 C 24 C 0 10 20 30 40 50 60 70 90 0...

Page 11: ...it Fan speed of outdoor unit Compressor revolution rps Indoor Outdoor P MPa T1 C T2 C 27 19 35 24 09K 0 8 1 1 12 to 15 65 to 38 TURBo High 49 12K 11 to 14 64 to 37 60 27 19 35 24 18K 0 9 1 1 12 to 14...

Page 12: ...Manual 14 Technical Information Service Manual 3 Outline Dimension Diagram 3 1 Indoor Unit Unit mm Model W H D 09K 790 275 200 12K 845 289 209 W 12K 09K D H 90 150 54 168 5 462 159 5 55 55 54 123 5 5...

Page 13: ...Technical Information 9 Service Manual 15 Technical Information Service Manual 3 2 Outdoor Unit 712 782 257 320 540 286 510 Unit mm 257 780 596 842 286 540 320 Unit mm NBL4 09 DU32 NBL4 12 DU32...

Page 14: ...r unit Outdoor unit COOLING HEATING 4 Way valve Discharge Suction Heat exchanger evaporator Heat exchanger condenser Valve Valve Liquid pipe side Gas pipe side Strainer Strainer Capillary Accumlator C...

Page 15: ...bol Color Symbol Symbol Color Symbol Name WH White GN Green CAP Jumper cap YE Yellow BN Brown COMP Compressor RD Red BU Blue Grounding wire YEGN Yellow Green BK Black VT Violet OG Orange Note Jumper c...

Page 16: ...Technical Information 12 Service Manual 21 Technical Information Service Manual 600007000687 Outdoor Unit NBL4 09 DU32 NBL4 12 DU32 600007000763...

Page 17: ...neutral wire 5 Interface of fan 6 Interface of health function live wire 7 Jumper cap 8 Auto button 9 Up down swing interface 10 Feedback interface of indoor unit 11 left right swing interface 12 Inte...

Page 18: ...sor wiring terminal 2 Reactor wiring terminal 3 Outdoor fan wiring terminal 4 Terminal of chassis electric heater 5 Terminal of compressor electric heater 6 Terminal of 4 way valve 7 Grounding wire 8...

Page 19: ...t the time of the system according to current time in the following steps 1 Pressing CLOCK button is blinking 2 Pressing or button the clock time will increase or decrease rapidly 3 Press CLOCK button...

Page 20: ...eiver light board or wired controller is defaulted to display setting temperature Press TEMP button to view indoor or outdoor ambient temperature When is displayed it means the displayed temperature i...

Page 21: ...2 Setting timer on Pressing TON button ON is blinking and time displaying zone displays the timer time of last setting Press or button to adjust the timer time Press TON button again to confirm setti...

Page 22: ...i v i e c e r s t i n i h t i w d e m r o f r e p e b d l u o h s r e l l o r t n o c e t o m e r f o n o i t a r e p o e h T If you need to control the main unit please point the remote controller a...

Page 23: ...ture is the set value under each condition Ambient temperature is Tamb Tcompensation for heat pump unit and Tamb for cooling only unit 4 If theres I feel function Tcompensation is 0 Others are same as...

Page 24: ...re corresponding remote control code 01 current set temperature will be displayed 2 Only when remote control signal is switched to indoor ambient temperature display status corresponding remote contro...

Page 25: ...ation When 2 Tpreset Tindoor ambient temperature Tcompensation 1 unit operates according to the previous status When Tpreset Tindoor ambient temperature Tcompensation 2 compressor stops operation and...

Page 26: ...If compressor is operating under this mode fan speed will adjust according to auto fan speed if compressor stops operation under this mode indoor fan will be in residual heat blowing status When power...

Page 27: ...Technical Information 23 Service Manual...

Page 28: ...of air conditioner before checking and maintenance 2 The air condition must apply specialized circuit and prohibit share the same circuit with other appliances 3 The air conditioner should be install...

Page 29: ...in injury 6 Prohibit installing the unit at the place where there may be leaked corrosive gas or flammable gas If there leaked gas around the unit it may cause explosion and other accidents 7 Do not...

Page 30: ...ntenance area is well ventilated The continuous ventilation status should be kept during the operation process Check whether there is fire source or potential fire source in the maintenance area The n...

Page 31: ...e 1 Level meter measuring tape 4 Electroprobe 7 Electronic leakage detector 10 Pipe pliers pipe cutter 2 Screw driver 5 Universal meter 8 Vacuum pump 11 Pipe expander pipe bender 3 Impact drill drill...

Page 32: ...least 250cm At least 15cm At least 50cm At least 50cm At least 30cm At least 300cm At least 200cm Space to the floor Space to the obstruction Space to the obstruction Space to the obstruction Space t...

Page 33: ...unit Bind up pipes and hang the indoor unit Make the bound pipes pass through the wall hole and then connect outdoor unit Neaten the pipes Vacuum pumping and leakage detection Check after installation...

Page 34: ...ding to the local safety regulations use qualified power supply circuit and air switch 3 Make sure the power supply matches with the requirement of air conditioner Unstable power supply or incorrect w...

Page 35: ...o the wall above 150mm 55mm Rear piping hole Insulating pipe Torque wrench Open end wrench Indoor pipe Pipe Union nut Union nut Pipe joint Pipe Hex nut diameter mm Tightening torque N m 6 15 20 9 52 3...

Page 36: ...n hose and power cord for installation when binding them When binding to a certain degree separate the indoor power and then separate the drain hose As show in Fig 15 3 Bind them evenly 4 The liquid p...

Page 37: ...he support 2 Fix the foot holes of outdoor unit with bolts As show in Fig 20 4 Connect Indoor and Outdoor Pipes 1 Remove the screw on the right handle of outdoor unit and then remove the handle As sho...

Page 38: ...eakage Detection 1 With leakage detector Check if there is leakage with leakage detector 2 With soap water If leakage detector is not available please use soap water for leakage detection Apply soap w...

Page 39: ...Please refer to the malfunction analysis discharge protection overload 5 Overcurrent protection E5 OFF 3S and blink 5 times During cooling and drying operation compressor and outdoor fan stop while in...

Page 40: ...sting 4 Mainboard damaged 14 Outdoor ambient temperature sensor is open short circuited F3 OFF 3S and blink 6 times During cooling and drying operating compressor stops while indoor fan operates Durin...

Page 41: ...operate During heating operation the complete unit will stop operation 1 Measure the voltage of position L and N on wiring board XT if the voltage is higher than 265VAC turn on the unit after the sup...

Page 42: ...operation compressor will stop while indoor fan will operate During heating operation the complete unit will stop Replace outdoor control panel AP1 30 Module high temperature protection P8 During coo...

Page 43: ...current for compressor 36 PFC protection HC OFF 3S and blink 14 times During cooling and drying operation compressor will stop while indoor fan will operate During heating operation the complete unit...

Page 44: ...compressor will stop while indoor fan will operate During heating operation the complete unit will stop Supply voltage is unstable 45 Malfunction of complete units current detection U5 During cooling...

Page 45: ...n and Maintenance 41 Service Manual 80 Installation and Maintenance Service Manual If malfunction occurs corresponding code will display and the unit will resume normal until protection or malfunction...

Page 46: ...otection Possible causes insufficient or too much refrigrant blockage of capillary and increase of suction temp improper running of compressor burning in or stuck of bearing damage of discharge valve...

Page 47: ...sensor broken Is mainboard broken Malfunction diagnosis process Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted Start Insert the temperature sens...

Page 48: ...inal is firm Check if the connection of PG motor control terminal is firm Turn on the unit again measure whether the output voltage on control terminal for PG motor is more than 50V within 1 min after...

Page 49: ...en Detection circuit of the mainboard is defined abnormal Malfunction diagnosis process Start Is there jumper cap on the mainboard Is the jumper cap inserted correctly and tightly Replace the jumper c...

Page 50: ...while the capacitordischarges slowly The zero cross detectioncircuit of the mainboard is defined abnormal Malfunction diagnosis process Turn power off for 1minute the turn back on The unit returns to...

Page 51: ...nd Maintenance Service Manual 5 Malfunction of detecting plate WIFI JF Start Is malfunction eliminated The end check if the connection wire are correctly connected Replace the detecting plate with the...

Page 52: ...c capacitor Voltage higher than 200V Fault with the voltage testing circuit on control panel AP1 Replace the control panel AP1 Measure the AC voltage between terminalL andN on wiring board XT power su...

Page 53: ...and compressor COMP secure Loose Is the connection in correct order Is the voltage input of the machine within normal range Use AC voltmeter to measure the voltage between terminal L and N on the wiri...

Page 54: ...the voltage between the two ends of capacitor C2 until the voltage is lower than 20V Replace the capacitor C2 Then energize and start the unit Replace the control panel AP1 Take corrective actions acc...

Page 55: ...es No Yes No Overheat and high temperature protection Is outdoor ambient temperature higher than 53 20 minutes after the complete unit is powered off Is heat dissipation of the indoor unit and outdoor...

Page 56: ...or broken Is time for compressor stopping enough Fault diagnosis process No Yes No No Yes Yes Yes No Power on the unit Is stop time of the compressor longer than 3 minutes Restart it up after 3 minute...

Page 57: ...he wires for the compressor connected correctly Is connection sequence right Is the connection made in clockwise direction Connect the wires correctly Replace the control panel AP1 If the fault is eli...

Page 58: ...diagnosis process 20 minutes after the complete unit is powered off Is the terminal FA for the electronic expansion valve connected correctly Connect the wires correctly Resistances between the first...

Page 59: ...C capacitor Whether there is any damage or short circuit Replace it as per the wiring diagram and reconnect the wires If the fault is eliminated Remove the PFC capacitor and measure resistance between...

Page 60: ...Yes No Yes Yes Start Did the equipment operate normally before the failure occurs The AP1 voltage detection circuit is at fault Check wiring inside of the indoor and outdoor units Are wires broken Ch...

Page 61: ...ssure nitrogen Replace the compressor Replace the mainboard with the same model End Is the supply voltage too low with overload Is the indoor outdoor heat exchanger dirty or are the air inlet and outl...

Page 62: ...nt 4 of maintenance method for details Malfunction of compressor Compressor cant operate Refer to point 5 of maintenance method for details 9 3 Troubleshooting for Normal Malfunction 1 Air Conditioner...

Page 63: ...ater leaking from drain pipe Replace drain pipe Wrapping is not tight Water leaking from the pipe connection place of indoor unit Wrap it again and bundle it tightly 5 Compressor Cant Operate Possible...

Page 64: ...n and Maintenance 60 Service Manual 99 Installation and Maintenance Service Manual 10 Exploded View and Parts List 10 1 Indoor Unit The component picture is only for reference please refer to the actu...

Page 65: ...00100245 1 12 Wall Mounting Frame 01252043 01252484 1 13 Cross Flow Fan 10352059 10352056 1 14 Fan Motor 150120874 15012146 1 15 Connecting pipe clamp 2611216401 2611216401 1 16 Rubber Plug Water Tray...

Page 66: ...Manual 109 Installation and Maintenance Service Manual 10 2 Outdoor Unit The component picture is only for reference please refer to the actual product NBL4 09 DU32 15 14 13 12 6 5 4 3 2 1 7 8 9 10 18...

Page 67: ...10333004 1 10 Chassis Sub assy 017000000134P 1 11 Brushless DC Motor 1501308507 1 12 Top Cover Sub Assy 01253073 1 13 Motor Support 01703104 1 14 Condenser Assy 011002000372 1 15 Rear Grill 01473009...

Page 68: ...64 Service Manual 112 Installation and Maintenance Service Manual The component picture is only for reference please refer to the actual product NBL4 12 DU32 1 2 3 4 5 7 8 9 10 11 12 13 14 27 26 15 16...

Page 69: ...1 8 Compressor and Fittings 00103925G 1 9 Compressor Gasket 76710287 3 10 4 Way Valve Assy 030152000016 1 11 Big Handle 2623343106 1 12 Valve Cover 22243006 1 13 Cut off Valve 071302391 1 14 Cut off...

Page 70: ...panel Push the left filter and right filter until they are separate from the groove on the front panel Remove the left filter and right filter respectively A1 B6 C2 C4 display Screw off the 2 screws t...

Page 71: ...tical louver and bottom case to remove vertical louver Loosen the connection clasps between front case sub assy and bottom case Lift up the front case sub assy and take it out 5 Remove front case sub...

Page 72: ...grounding screw Remove the wiring terminals of motor and stepping motor Remove the electric box assy Twist off the screws that are locking each lead wire and rotate the electric box assy Twist off th...

Page 73: ...ip and then pull out the terminals 2 Pull out the holder for some terminals at first holder is not available for some wiring terminal hold the connector and then pull the terminal circlip soft sheath...

Page 74: ...the motor clamp Remove the screws at the connection place of cross flow blade and motor lift the motor and cross flow blade upwards to remove them Remove the bearing holder sub assy Remove the screw f...

Page 75: ...09 DU32 Top panel Right side plate Big handle Screw Screws Screw the big handle upwards to make the clasp of big handle separate from the groove of right side plate and then remove the big handle then...

Page 76: ...ice Manual Procedure Step Screws Screws Screws Screws Screw off the screws that are locking the front cover Then take it off Front cover 4 Remove the front cover 5 Remove axial flow blade Remove the n...

Page 77: ...ate Protective grille Screws 1 Screws 2 Remove the screws 1 fixing protective grille and then remove the protective grille Remove the screws fixing electric box assy pull out each wiring terminal lift...

Page 78: ...with wet cloth completely to avoid damaging the valve due to high temperature Unsolder weld point of capillary Sub assy valve and outlet pipe of condensator Thenremove the capillary Sub assy Do not b...

Page 79: ...g screws of the compressorand remove the compressor 11 Remove clapboard sub assy Liquid valve Compressor Gas valve 12 Remove Compressor Remove the 2 screws fixing the gas valve Unsolder the welding sp...

Page 80: ...nance Service Manual Procedure Steps 1 Remove big handle 2 Remove top cover top cover big handle valve cover Before disassamble Remove the screws fixing big handle valve cover and then remove them Rem...

Page 81: ...and the front panel Then remove the front grille Remove connection screws connecting the front panel with the chassis and the motor support and then remove the front panel Remove the screws fixing pr...

Page 82: ...ws fixing motor and then remove the motor Remove the screws fixing motor support and then remove the motor support Remove the screws fixing clapboard and then remove the clapboard Remove the screws fi...

Page 83: ...t Unsolder the welding joint connecting the valve with capillary and condenser unsolder the welding joint connecting the gas valve and air return pipe remove the 2 screws fixing the gas valve to remov...

Page 84: ...charging amount prolonged length of liquid pipe X additional refrigerant charging amount per meter Appendix 1 Reference Sheet of Celsius and Fahrenheit Appendix 2 Configuration of Connection Pipe Set...

Page 85: ...and prevent the burrs from getting into the pipe C Put on suitable insulating pipe D Put on the union nut Remove the union nut on the indoor connection pipe and outdoor valve install the union nut on...

Page 86: ...71 2 523 110 0 758 6 66 88 33 10 63 72 2 439 111 0 737 5 63 46 34 10 2 73 2 358 112 0 717 4 60 23 35 9 779 74 2 28 113 0 697 3 57 18 36 9 382 75 2 206 114 0 678 2 54 31 37 9 003 76 2 133 115 0 66 1 5...

Page 87: ...33 14 18 72 3 252 111 0 983 5 84 61 34 13 59 73 3 144 112 0 956 4 80 31 35 13 04 74 3 04 113 0 93 3 76 24 36 12 51 75 2 94 114 0 904 2 72 41 37 12 76 2 844 115 0 88 1 68 79 38 11 52 77 2 752 116 0 856...

Page 88: ...3 32 16 384 5 23 53 74 62 11 32 101 3 22 15 362 9 24 51 41 63 10 93 102 3 13 14 342 8 25 49 19 64 10 54 103 3 04 13 323 9 26 47 08 65 10 18 104 2 96 12 306 2 27 45 07 66 9 83 105 2 87 11 289 6 28 43...

Page 89: ...NOTES...

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Page 92: ...Wall Mounted Air Conditioning Unit English NBL4 09IDU32 NBL4 09 DU32 NBL4 12IDU32 NBL4 12 DU32 MODELS Wall Mounted Air Conditioning Unit Service Manual Wall Mounted Air Conditioning Unit...

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