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Technical Information

Service Manual

Indoor unit

Outdoor unit

COOLING

HEATING

4-Way valve

Discharge

Suction

Heat

exchanger

(evaporator)

Heat

exchanger

(condenser)

Valve

Liquid pipe

side

Gas pipe

side

Strainer

Capillary

Accumlator

Compressor

Electron

expansion

valve

Connection pipe specification:
Liquid pipe:1/4"
Gas pipe:5/8" 24K
Gas pipe:1/2" 18K
Gas pipe:3/8" 12K

4. Refrigerant System Diagram

Содержание LI012HI-210P432

Страница 1: ...Thank you for selecting LENNOX air conditioners Service Manual Models LI012HI 210P432 LI012HO 210P432 LI018HI 210P432 LI018HO 210P432 LI024HI 210P432 LI024HO 210P432 Refrigerant R410A...

Страница 2: ...t 10 4 Refrigerant System Diagram 11 5 Electrical Part 12 5 1 Wiring Diagram 12 5 2 PCB Printed Diagram 15 6 Function and Control 17 6 1 Remote Controller Introduction 17 6 2 Brief Description of Mode...

Страница 3: ...9 3 Troubleshooting for Normal Malfunction 54 10 Exploded View and Parts List 56 10 1 Indoor Unit 56 10 2 Outdoor Unit 62 11 Removal Procedure 66 11 1 Removal Procedure of Indoor Unit 66 11 2 Removal...

Страница 4: ...Information Service Manual 1 Summary Indoor Unit Outdoor Unit Part Technical Information LI012HO 210P432 LI018HO 210P432 LI024HO 210P432 LI012HI 210P432 LI018HI 210P432 LI024HI 210P432 Remote Control...

Страница 5: ...210P432 Indoor Unit Product Code 18J12 Fan Type Cross flow Diameter Length DXL inch 3 55 64X25 Fan Motor Cooling Speed SH H M ML L r min 1350 1200 1050 850 Fan Motor Heating Speed SH H M ML L r min 13...

Страница 6: ...29 13 32X1 3 4X22 Fan Motor Speed rpm 900 Output of Fan Motor W 30 Fan Motor RLA A 0 37 Fan Motor Capacitor F Air Flow Volume of Outdoor Unit CFM 1295 Fan Type Axial flow Fan Diameter inch 17 1 4 Def...

Страница 7: ...ow Diameter Length DXL inch 4 1 4X32 11 16 4 3 16X27 13 16 Fan Motor Cooling Speed SH H M ML L r min 1300 1150 1000 850 1400 1200 1050 800 Fan Motor Heating Speed SH H M ML L r min 1300 1150 1000 850...

Страница 8: ...8 Coil Length LXDXW inch 33 5 16X1 3 4X26 33 5 8X1 1 2X26 Fan Motor Speed rpm 800 800 Output of Fan Motor W 60 60 Fan Motor RLA A 0 4 0 65 Fan Motor Capacitor F Air Flow Volume of Outdoor Unit CFM 188...

Страница 9: ...Indoor air flow Super High Pipe length 24 6 ft Outdoor temp F Outdoor temp F 89 6 95 100 4 107 6 129 g n i l o o C Outdoor temp C g n i t a e H Capacity ratio Outdoor temp C 0 20 40 60 80 100 120 140...

Страница 10: ...167 181 4 out 98 6 118 4 Super High High 75 Rated heating condition F DB WB Model Pressure of gas pipe connecting indoor and outdoor unit Inlet and outlet pipe temperature of heat exchanger Fan speed...

Страница 11: ...h Middle Low High Middle Low 40 42 44 46 48 50 52 54 20 0 3 0 4 50 60 70 80 Compressor frequency Hz Noise dB A Noise dB A Heating Cooling 12K 12K AFD 24K 18K 12K AFC 20 30 40 50 L M H 24K 18K 12K SH I...

Страница 12: ...mension Diagram 3 1 Indoor Unit Unit inch Models W H D W1 W2 W3 AFC 35 13 64 11 1 2 8 21 64 8 1 64 21 21 64 5 27 32 AFD 40 12 8 45 64 5 27 8 1 16 AFE 44 43 64 13 9 23 32 8 31 64 26 31 32 9 15 64 3 1 3...

Страница 13: ...hnical Information Service Manual 3 2 Outdoor Unit Unit inch 35 13 3 8 27 9 16 15 5 8 38 14 5 16 22 LI012HO 210P432 23 19 64 33 25 64 11 1 4 30 10 12 19 32 23 19 64 Unit inch LI018HO 210P432 LI024HO 2...

Страница 14: ...Suction Heat exchanger evaporator Heat exchanger condenser Valve Valve Liquid pipe side Gas pipe side Strainer Strainer Capillary Accumlator Compressor Electron expansion valve Connection pipe specifi...

Страница 15: ...used to determine fan speed and the swing angle of horizontal lover for this model LI018HI 210P432 6361000044201 67 33 1 3 2 7 50 1 9 325 725 1 803 3 0 1 2 5 1 1 1 1 1 7 8 20 287 20 0 18 211 725 3 5 0...

Страница 16: ...3 1 3 2 7 50 1 9 325 725 803 3 0 1 2 5 1 1 1 1 1 7 8 20 287 02725 287 225 81 7 7 6 1625 63 63 57 3 5220 78 7 03 6 1625 7 03 6 1625 63 2 5 5 9 5 1 57 6 1 8 0 75 2 8 5 1 1 1 02 8 237 21 0 20 0 18 211 72...

Страница 17: ...02725 2 5 725 1 2 1 DQG HDWHU RWWRP 5 9 1 7521 3 16 21 9 9 0 1 7 These wiring diagrams are subject to change without notice please refer to the one supplied with the unit LI024HO 210P432 LI018HO 210P4...

Страница 18: ...ack Interface of dry contact 12 Needle stand for tube temperature sensor 14 Display interface 15 16 Jump Interface of health function live wire Terminal with indoor unit communication wire Interface o...

Страница 19: ...nal 2 3 Reactor wiring terminal 1 4 Terminal of chassis electric heater 5 6 4 way valve terminal 7 Neutral wire Grounding wire 8 Communication wire 9 Live wire 10 Terminal of electronic expansion valv...

Страница 20: ...door ambient temp Sleep mode Clock Heat mode Fan mode Dry mode Cool mode Auto mode Operation mode I feel X fan mode health function Note After putting through the power the air conditioner will give o...

Страница 21: ...n Press this button to set up down swing angle which circularly changes as below This remote controller is universal If any command or is sent out the unit will carry out the command as indicates the...

Страница 22: ...turn on the display s light and press this button again to turn off the display s light If the light is turned on is displayed If the light is turned off disappears 16 X FAN Button Pressing X FAN but...

Страница 23: ...1 5V dry batteries and make sure the position of polar and polar are correct 3 Reinstall the cover of battery box Replacement of Batteries in Remote Controller battery Cover of battery box remove rein...

Страница 24: ...tion Overcurrent protection If total current is high the compressor will run in limited frequency If total current is too high the compressor will stop the outdoor fan will delay 30 seconds to stop in...

Страница 25: ...opened and after 60 seconds the compressor and the outer fan will be started the indoor fan will run under preset cold air prevention conditions and H1 will be displayed at temperature display area on...

Страница 26: ...er module protection mode the compressor will stop When the compressor remains at stop for at least 3 minutes the compressor will resume its operation If module protection occurs six times in successi...

Страница 27: ...25 24 25 26 26 26 26 26 25 25 25 26 27 27 27 27 27 26 26 26 27 28 28 28 28 28 27 27 27 28 29 29 29 29 29 28 28 28 29 29 29 29 29 29 28 28 29 30 30 30 30 30 30 29 29 30 30 30 30 30 30 30 29 29 2 In hea...

Страница 28: ...isplay in red under standby status When the machine is start by remote control the indication pattern will light and display the current operation mode the mode light in cludes Cooling heating and deh...

Страница 29: ...tive accessories such as protective boards cable cross loop and wire clip 7 The live wire neutral wire and grounding wire of power supply must be corresponding to the live wire neutral wire and ground...

Страница 30: ...liquid valve and gas valve are fully closed and power is disconnected before detaching the connection pipe If compressor starts running when stop valve is open and connection pipe is not yet connected...

Страница 31: ...ng 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 head electric drill 6 T...

Страница 32: ...ace to the obstruction Space to the obstructio Space to the obstruction At least 19 11 16 inch Atleast1113 16inch At least 19 11 16 inch At least 11 13 16 inch At least 78 5 8 inch Drainage pipe At le...

Страница 33: ...or 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 and test operation Finish installat...

Страница 34: ...n location to the client and then confirm it with the client 2 install wall mounting frame 1 Hang the wall mounting frame on the wall adjust it in horizontal position with the level meter and then poi...

Страница 35: ...s show in Fig 3 2 When selecting leading out the pipe from left or right please cut off the corresponding hole on the bottom case As show in Fig 4 2 Open a piping hole with the diameter of 2 3 16 2 3...

Страница 36: ...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 pip...

Страница 37: ...e into the drain vent As show in Fig 19 3 Fix Outdoor Unit 1 Place the outdoor unit on the support 2 Fix the foot holes of outdoor unit with bolts As show in Fig 20 4 Connect Indoor and Outdoor Pipes...

Страница 38: ...cient It may cause condensation and water dripping 4 Is water drained well It may cause condensation and water dripping 5 Is the voltage of power supply according to the voltage marked on the nameplat...

Страница 39: ...uring cooling and drying operation compressor and outdoor fan stop while indoor fan operates During heating operation all loads stop 1 Supply voltage is unstable 2 Supply voltage is too low and load i...

Страница 40: ...nt temperature sensor is open short circuited F3 During cooling and drying operating compressor stops while indoor fan operates During heating operation the complete unit will stop operation Outdoor t...

Страница 41: ...oltage is higher than 265VAC turn on the unit after the supply voltage is increased to the normal range 2 If the AC input is normal measure the voltage of electrolytic capacitor C on control panel AP1...

Страница 42: ...and drying 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...

Страница 43: ...synchro nizing of compressor H7 During cooling and drying operation compressor will stop while indoor fan will operate During heating operation the complete unit will stop operation Refer to the malfu...

Страница 44: ...malfunction on outdoor units control panel AP1 please replace the outdoor units control panel AP1 47 The four way valve is abnormal U7 If this malfunction occurs during heating operation the complete...

Страница 45: ...ard broken Malfunction diagnosis process Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted Start Insert the temperature sensor tightly Yes Yes Yes Y...

Страница 46: ...is eliminated Reinsert the wiring terminal of indoor fan It s the malfunction of main board Replace a new main board that is of the same model It s the malfunction of main board Replace a new main boa...

Страница 47: ...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 cap with the same model...

Страница 48: ...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 outlet blocked The fan is a...

Страница 49: ...board matches with display board Main board of IDU matches with that of ODU Communication cord is damaged Replace IDU s main board Malfunction eliminated End Connect the line according to wiring diag...

Страница 50: ...alfunction of the outdoor mainboard AP1 Replace outdoor mainboard Measure the voltage input with AC voltmeter see fig 30 Voltage within 180VAC 260VAC Shut down the power and wait 20 minutes or use DC...

Страница 51: ...heck the connection between the control board and the compressor by referring to the electric wiring diagram Check whether wires of compressor UVW are connected correctly Measure the resistance value...

Страница 52: ...perature is higher than 53 Normal protection please use it after improving the outdoor ambient temperature Unit restarts normally Unit restarts normally If the radiating of indoor and outdoor unit is...

Страница 53: ...h and low pressure of system is not balanced please start the unit after 3min If the compressor wire COMP UVW is well connected and connection sequence is correct Check the connection situation of out...

Страница 54: ...valve damaged If the refrigerant is leaked The compressor overload protection terminal is not connected well with the mainboard If the overload protector is damaged Heat exchange of unit is not good...

Страница 55: ...nual Compressor overload protection terminal is not connected well with the mainboard reconnect them correctly Heat exchange of unit is not good heat exchanger is dirty and unit radiating environment...

Страница 56: ...before malfunction Check built in wiring of indoor and outdoor unit If the wiring is damaged Replace the wire Check the malfunction type with communication malfunction detector Malfunction of outdoor...

Страница 57: ...od for details Malfunction of compressor Compressor can t operate Refer to point 5 of maintenance method for details 9 3 Troubleshooting for Normal Malfunction 1 Air Conditioner Can t be Started Up 2...

Страница 58: ...n 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 Can t Operate Possible causes Discriminatin...

Страница 59: ...I018HI 210P432 The component picture is only for reference please refer to the actual product 37 38 34 33 1 5 6 7 8 9 10 11 12 13 14 16 17 18 19 23 24 25 26 27 30 29 22 32 31 35 36 20 21 15 28 4 2 3 1...

Страница 60: ...1 14 Evaporator Assy 011001000207 1 15 Cross Flow Fan 10352060 1 16 Fan Motor 15012136 1 17 Motor Press Plate 26112511 1 18 Wall Mounting Frame 01362026 1 19 Connecting pipe clamp 2611218801 1 20 Cra...

Страница 61: ...nd Maintenance Service Manual The component picture is only for reference please refer to the actual product LI012HI 210P432 23 22 21 20 19 18 17 16 15 14 13 6 5 4 3 2 1 34 33 32 31 30 29 28 27 26 24...

Страница 62: ...d 42011233 1 12 Electric Box Assy 100002065343 1 13 Axile Bush 10542036 1 14 Guide Louver 200004060017 1 15 Crank 73012005 1 16 Stepping Motor 1521210712 1 17 Rubber Plug Water Tray 76712012 1 18 Conn...

Страница 63: ...Service Manual 42 41 43 44 15 16 18 17 31 33 35 36 37 39 40 1 2 3 4 5 6 7 8 9 10 11 12 13 14 19 20 21 22 24 23 26 25 27 28 29 34 30 32 38 LI024HI 210P432 The component picture is only for reference pl...

Страница 64: ...r Press Plate 26112515 1 20 Fan Motor 1501214501 1 21 Connecting pipe clamp 26112514 1 22 Drainage Hose 0523001405 1 23 Stepping Motor 1521240212 1 24 Crank 73012005 1 25 Guide Louver 200004060018 1 2...

Страница 65: ...62 Installation and Maintenance Service Manual 31 The component picture is only for reference please refer to the actual product LI024HO 210P432 LI018HO 210P432 10 2 Outdoor Unit...

Страница 66: ...Assy 07133843 071302392 1 13 Right Side Plate 0130509403P 0130509403P 1 14 Valve Cover 22245002 22245002 1 15 Retaining Plate 02115006P 02115006P 1 16 Handle Assy 02113109 02113109 1 17 Valve Support...

Страница 67: ...64 Installation and Maintenance Service Manual The component picture is only for reference please refer to the actual product LI012HO 210P432...

Страница 68: ...30239 1 15 Valve Cover 22243006 1 16 Cable Cross Plate 1 02123013P 1 17 Cable Cross Plate 2 02123014P 1 18 Right Side Plate 0130325503P 1 19 4 Way Valve Assy 030152060090 1 20 4 Way Valve 430004022 1...

Страница 69: ...ntal louver a b Panel Clasps Left filter and right filer Axile bush Open the panel Loosen the clasp shown in the fig and then pull the left filter and right filer outwards to remove them Push out the...

Страница 70: ...IFI Electric box cover 2 Screw Detecting plate WiFi Panel Display Screws Front panel Panel rotation Groove 3 Remove panel 4 Remove electric box cover 2 and detecting plate WIFI 5 Remove front case sub...

Страница 71: ...he power cord Remove the wiring terminal of power cord Lift up the main board and take it off electric box Cold plasma generator Grounding screw Indoor tube temperature sensor Electric box assy Main b...

Страница 72: ...move the connection pipe clamp First remove the left side of evaporator from the groove of bottom shell and then remove the right side from the clasp on the bottom shell Remove 3 screws fixing evapora...

Страница 73: ...lade and motor lift the motor and cross flow blade upwards to remove them 8 Remove motor and cross flow blade Motor clasp screws Remove 3 screws fixing motor clamp and then remove the motor clamp a Cl...

Страница 74: ...tween the front grille and the front panel Then remove the front grille top cover front grille screw Cable Cross Plate 2 Valve Cover Remove 3 connection screw fixing small cable cross plate 2 and then...

Страница 75: ...ow blade Procedure Steps Remove connection screws connecting the front panel with the chassis and the motor support and then remove the front panel Remove connection screws connecting the right side p...

Страница 76: ...r Remove the 2 tapping screws re move it Remove the 2 screws fixing the cover of elec tric box Lift to remove the cover Loos en thewire and disconnect the terminal Lift to re move the electric box ass...

Страница 77: ...way Valve Assy with wet cotton and unsolderthe 4 weld spots connecting the 4 way Valve Assy to take it out Note Refrig erant shouldbe discharged firstly Welding processshould be as quickly as possible...

Страница 78: ...dle Remove the screw connecting the valve cover and right side plate and then remove the valve cover 2 Remove grille and outer case grille Remove the 4 screws connecting the grille and outer case and...

Страница 79: ...ide plate and left side plate and then remove the outer case Remove the screws connecting the right side plate with electric box assy valve support chassis and condenser side plate and then remove the...

Страница 80: ...e 2 screws connecting the motor support and chassis and then loosen the stopper to remove the motor support Remove the screws fixing the electric box sub assy loosen the wire bundle pull out the wirin...

Страница 81: ...solder gas and liquid valves and then remove the screws fixing valve supports valves with the supports Remove screws fixing valve and then remove Valve Before unsoldering wrap the valve completely wit...

Страница 82: ...oval of 4 way valve 10 Removal of compressor Compressor Washer Motor Motor support Remove screws fixing motor support and then remove the support Remove screws fixing motor and then remove the motor 1...

Страница 83: ...66 2 19 75 76 75 2 24 84 85 84 2 29 68 68 20 77 77 25 86 86 30 1 Standard length of connection pipe More details please refer to the specifications 2 Min length of connection pipe is 9 84ft 3 Max len...

Страница 84: ...to the following steps A Cut the pip Confirm the pipe length according to the distance of indoor unit and outdoor unit Cut the required pipe with pipe cutter B Remove the burrs Remove the burrs with s...

Страница 85: ...3 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 51 59 38 8 642 77 2 064 116 0...

Страница 86: ...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 0 65 37 39 11 06 78 2 663 117 0...

Страница 87: ...74 62 11 32 101 3 22 15 362 9 24 51 41 63 10 93 102 3 129 14 342 8 25 49 19 64 10 54 103 3 04 13 323 9 26 47 08 65 10 18 104 2 955 12 306 2 27 45 07 66 9 827 105 2 872 11 289 6 28 43 16 67 9 489 106 2...

Страница 88: ...Visit us at www lennox com or contact us at 1 877 726 0024 by Lennox Industries Inc please visit www lennox com 2014 Lennox Industries Inc For a complete list of the registered and common law tradema...

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