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Installation and Maintenance

Service Manual

The component picture is only for reference; please refer to the actual product.

LI012CO-210P432

Summary of Contents for LI012CI-210P432

Page 1: ...Thank you for selecting LENNOX air conditioners Service Manual Models LI012CI 210P432 LI012CO 210P432 LI018CI 210P432 LI018CO 210P432 LI024CI 210P432 LI024CO 210P432 Refrigerant R410A...

Page 2: ...ntrol 22 6 1 Remote Controller Introduction 22 6 2 Brief Description of Modes and Functions 26 Part Installation and Maintenance 31 7 Notes for Installation and Maintenance 31 8 Installation 34 8 1 In...

Page 3: ...Removal Procedure 73 11 1 Removal Procedure of Indoor Unit 73 11 2 Removal Procedure of Outdoor Unit 78 Appendix 92 Appendix 1 Reference Sheet of Celsius and Fahrenheit 92 Appendix 2 Configuration of...

Page 4: ...Information Service Manual 1 Summary Indoor Unit Outdoor Unit Part Technical Information LI018CO 210P432 LI012CO 210P432 LI024CO 210P432 LI012CI 210P432 LI018CI 210P432 LI024CI 210P432 Remote Control...

Page 5: ...e Model Product Code 1 LI012CI 210P432 LI012CO 210P432 18J03 LI012CI 210P432 LI012CO 210P432 2 LI018CI 210P432 LI018CO 210P432 LI018CI 210P432 LI018CO 210P432 3 LI024CI 210P432 LI024CO 210P432 LI024CI...

Page 6: ...0P432 Indoor Unit Product Code 18J03 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 Outp...

Page 7: ...13 32 X1 3 4X20 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 Defro...

Page 8: ...or unit LI018CI 210P432 Indoor Unit Product Code 18J05 Fan Type Cross flow Diameter Length DXL inch 4 3 16X27 13 16 Fan Motor Cooling Speed SH H M ML L r min 1400 1200 1050 800 Fan Motor Heating Speed...

Page 9: ...h LXDXW inch 28 9 10X1 1 2X21 7 10 Fan Motor Speed rpm 880 Output of Fan Motor W 40 Fan Motor RLA A 0 62 Fan Motor Capacitor F Air Flow Volume of Outdoor Unit CFM 1412 Fan Type Axial flow Fan Diameter...

Page 10: ...odel of indoor unit LI024CI 210P432 Indoor Unit Product Code Fan Type Cross flow Diameter Length DXL inch 4 1 4X32 11 16 Fan Motor Cooling Speed SH H M L r min 1300 1150 1000 850 Fan Motor Heating Spe...

Page 11: ...l Length LXDXW inch 33 5 16X1 3 4X26 Fan Motor Speed rpm 800 Output of Fan Motor W 60 Fan Motor RLA A 0 4 Fan Motor Capacitor F Air Flow Volume of Outdoor Unit CFM 1883 Fan Type Axial flow Fan Diamete...

Page 12: ...ength 24 6ft 2 3 Cooling and Heating Data Sheet in Rated Frequency Rated cooling condition F DB WB Model Pressure of gas pipe connecting indoor and outdoor unit Inlet and outlet pipe temperature of he...

Page 13: ...70 80 90 100 Compressor frequency Hz Noise dB A LI012CI 210P432 LI012CO 210P432 LI018CI 210P432 LI018CO 210P432 LI024CI 210P432 LI024CO 210P432 20 30 40 50 L M H LI024CI 210P432 LI018CI 210P432 SH Ind...

Page 14: ...1 Indoor Unit Unit inch Models W H D W1 W2 W3 LI012CI 210P432 35 13 64 11 1 2 8 21 64 8 1 64 21 21 64 5 27 32 LI018CI 210P432 40 12 8 45 64 5 27 8 1 16 LI024CI 210P432 44 43 64 13 9 23 32 8 31 64 26 3...

Page 15: ...12 Technical Information Service Manual 3 2 Outdoor Unit 35 3 8 32 3 16 21 2 3 13 1 2 12 23 1 2 14 7 8 Unit inch Unit inch 35 13 3 8 27 9 16 15 5 8 38 14 5 16 22 LI018CO 210P432 LI024CO 210P432...

Page 16: ...13 Technical Information Service Manual LI012CO 210P432 23 19 64 33 25 64 11 1 4 30 10 12 19 32 23 19 64 Unit inch...

Page 17: ...t exchanger evaporator Heat exchanger condenser Valve Valve Liquid pipe side Gas pipe side Strainer Capillary Compressor Electron expansion valve Connection pipe specification Liquid pipe 1 4 Gas pipe...

Page 18: ...used to determine fan speed and the swing angle of horizontal lover for this model LI018CI 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...

Page 19: ...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...

Page 20: ...5 1 1 1 1 8 1 1 02725 1 1 2 1 5 5 725 2 9 1 7521 9 9 3 16 21 0 60000706184801 LI018CO 210P432 LI024CO 210P432 1 2 7 50 1 7 03 6 1625 867 7 03 6 1625 2875220 28778 7 03 6 1625 8 203 203 6 7 29 B 203 5...

Page 21: ...Auto button 4 Up down swing interface 5 6 Interface of temperature sensor 7 Terminal for display board connection 8 Terminal of jumper cap 9 Interface of communication wire for indoor unit and outdoo...

Page 22: ...p down swing interface Interface of PG feedback Interface of dry contact 10 11 12 Needle stand for tube temperature sensor Display interface 14 15 16 Jump Terminal with indoor unit communication wire...

Page 23: ...terminal 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...

Page 24: ...rature sensor 5 Interface of electronic expansion valve 6 Interface of system low pressure protection 7 Interface of fan 8 4 way valve interface 9 2 way valve interface 10 11 Interface of electric hea...

Page 25: ...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...

Page 26: ...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...

Page 27: ...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...

Page 28: ...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...

Page 29: ...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...

Page 30: ...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...

Page 31: ...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...

Page 32: ...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...

Page 33: ...display 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 de...

Page 34: ...the unit adequately grounded The grounding wire can t be used for other purposes 6 Must apply protective accessories such as protective boards cable cross loop and wire clip 7 The live wire neutral wi...

Page 35: ...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...

Page 36: ...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...

Page 37: ...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...

Page 38: ...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...

Page 39: ...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...

Page 40: ...t or rear left As 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 diamete...

Page 41: ...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...

Page 42: ...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...

Page 43: ...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...

Page 44: ...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...

Page 45: ...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...

Page 46: ...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...

Page 47: ...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...

Page 48: ...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...

Page 49: ...rmal U7 If this malfunction occurs during heating operation the complete unit will stop operation 1 Supply voltage is lower than AC175V 2 Wiring terminal 4V is loosened or broken 3 4V is damaged pleas...

Page 50: ...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...

Page 51: ...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...

Page 52: ...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...

Page 53: ...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...

Page 54: ...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...

Page 55: ...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...

Page 56: ...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...

Page 57: ...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...

Page 58: ...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...

Page 59: ...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...

Page 60: ...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...

Page 61: ...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...

Page 62: ...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...

Page 63: ...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...

Page 64: ...I018CI 210P432 The component picture is only for reference please refer to the actual product 37 37 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...

Page 65: ...upport 24212177 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 2611...

Page 66: ...nd Maintenance Service Manual The component picture is only for reference please refer to the actual product LI012CI 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...

Page 67: ...d 42011233 1 12 Electric Box Assy 100002065342 1 13 Axile Bush 10542036 1 14 Guide Louver 27230013901 1 15 Crank 73012005 1 16 Stepping Motor 1521210712 1 17 Rubber Plug Water Tray 76712012 1 18 Conne...

Page 68: ...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 LI024CI 210P432 The component picture is only for reference pl...

Page 69: ...Plate 26112515 1 20 Fan Motor 1501214501 1 21 Connecting pipe clamp 26112514 1 22 Drainage Hose 0523001405 1 23 Stepping Motor 1521240210 1 24 Crank 73012005 1 25 Guide Louver 27230013903 1 26 Axile...

Page 70: ...ntenance Service Manual 24 8 7 6 5 4 3 2 1 16 9 15 14 13 12 11 10 23 20 18 30 25 29 28 27 26 21 19 17 22 31 32 The component picture is only for reference please refer to the actual product LI024CO 21...

Page 71: ...07133844 1 12 Cut off Valve Sub Assy 07133843 1 13 Valve Cover 22245002 1 14 Right Side Plate 0130509403P 1 15 Retaining Plate 02115006P 1 16 Handle Assy 02113109 1 17 Wire Clamp 71010102 1 18 Temper...

Page 72: ...69 Installation and Maintenance Service Manual The component picture is only for reference please refer to the actual product LI012CO 210P432...

Page 73: ...12 Valve 07130239 1 13 Valve Support 0171314201P 1 14 Cable Cross Plate sub assy 02123015 1 15 Right Side Plate Assy 0130325503P 1 16 Cover of pass wire 02123013P 1 17 Magnet Coil 072002000012 1 18 Di...

Page 74: ...allation and Maintenance Service Manual 2 1 3 4 5 14 15 16 17 18 19 6 7 8 9 10 11 12 13 20 21 22 24 25 23 27 26 The component picture is only for reference please refer to the actual product LI018CO 2...

Page 75: ...92 1 9 Valve Support Assy 01713115P 1 10 Cut off Valve Assy 1 2 07133774 1 11 Cut off Valve Sub Assy 07335708 1 12 Right Side Plate 01303244P 1 13 Valve Cover 22243005 1 14 Cable Cross Plate Sub assy...

Page 76: ...al 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 ax...

Page 77: ...2 Electric box cover 2 Screw Panel Display Screws Front panel Panel rotation Groove 3 Remove panel 4 Remove electric box cover 2 5 Remove front case sub assy Front case sub assy Front case sub assy Mi...

Page 78: ...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...

Page 79: ...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...

Page 80: ...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...

Page 81: ...e 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 remove the cable cro...

Page 82: ...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...

Page 83: ...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...

Page 84: ...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...

Page 85: ...e 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 then remove t...

Page 86: ...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...

Page 87: ...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...

Page 88: ...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...

Page 89: ...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...

Page 90: ...ing the grille and the panel and then remove the grille grille Top panel 1 Remove cable cross plate 2 and valve cover and top panel Before disassamble Remove 3 connection screw fixing cable cross plat...

Page 91: ...vice Manual Procedure Step E Screw Screw Screw and then remove the right side plate Remove right side plate and rear grill Screw Screw Cabinet Right side plate Rear grill remove the cabinet Remove the...

Page 92: ...emove lef side plate Procedure Step Nut 6 Remove electric box assy assy pull out each wiring terminal lift the electric box assy upwards to remove it Note When pulling out the wiring terminal pay atte...

Page 93: ...upport 8 Remove motor support Spot weld 4 way valve assy 9 Remove 4 way valve assy Unsolder the spot weld of 4 way valve assy compressor and condenser and then remove the 4 way valve assy Note When un...

Page 94: ...Protect the ports of discharge pipe and suction pipe to avoid foreign objects to enter it 10 Remove compressor Procedure Step 11 Remove clapboard Screw Clapboard then remove the clapboard Remove Valve...

Page 95: ...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...

Page 96: ...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...

Page 97: ...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...

Page 98: ...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...

Page 99: ...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...

Page 100: ...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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