Lennox LI018CI-180P432 Page 1 Service Manual Download

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Thank you for selecting LENNOX air conditioners.

Service Manual

Models: LI018CI-180P432 / LI018CO-180P432

LI018HI-180P432 / LI018HO-180P432
(Refrigerant

R410A)

Summary of Contents for LI018CI-180P432

Page 1: ...Thank you for selecting LENNOX air conditioners Service Manual Models LI018CI 180P432 LI018CO 180P432 LI018HI 180P432 LI018HO 180P432 Refrigerant R410A...

Page 2: ...ctrical Part 9 5 1 Wiring Diagram 9 5 2 PCB Printed Diagram 11 6 Function and Control 13 6 1 Remote Controller Introduction of YV1FB7F 13 6 2 Brief Description of Modes and Functions 17 Part Installat...

Page 3: ...on 55 10 Exploded View and Parts List 57 10 1 Indoor Unit 57 10 2 Outdoor Unit 59 11 Removal Procedure 63 11 1 Removal Procedure of Indoor Unit 63 11 2 Removal Procedure of Outdoor Unit 68 Appendix 73...

Page 4: ...1 Technical Information Service Manual 1 Summary Indoor Unit Part Technical Information LI018CI 180P432 LI018HI 180P432 Outdoor Unit LI018CO 180P432 LI018HO 180P432 Remote Controller YAA1FB...

Page 5: ...40 66 Indoor Unit Model of indoor unit LI018CI 180P432 LI018HI 180P432 Indoor Unit Product Code Y8371 Y8383 Fan Type Cross flow Cross flow Diameter Length DXL inch 4 3 16X27 13 16 4 3 16X27 13 16 Fan...

Page 6: ...LXDXW inch 34 11 16X26X7 8 33 5 8X26X7 8 Fan Motor Speed rpm 800 800 Output of Fan Motor W 60 60 Fan Motor RLA A 0 52 0 52 Fan Motor Capacitor F Air Flow Volume of Outdoor Unit CFM 1883 1883 Fan Type...

Page 7: ...5 F Indoor air flow Super High Pipe length 24 6ft Conditions Indoor DB70 F Outdoor DB19 94 F WB19 04 F Indoor air flow Super High Pipe length 24 6ft Heating Heating 0 10 20 30 40 50 60 70 90 0 10 20 3...

Page 8: ...rps Indoor Outdoor P PSIG T1 F T2 F 80 66 9 95 Y8371 Y8372 130 142 in 46 4 51 8 out 51 8 57 2 in 167 181 4 out 98 6 118 4 Super High High 73 Heating 20 30 40 50 L M H SH Indoor fan motor rating speed...

Page 9: ...al Information Service Manual 3 Outline Dimension Diagram 3 1 Indoor Unit W D H 4 27 7 3 16 5 1 2 7 1 2 1 1 2 2 3 16 2 3 16 3 1 8 6 1 11 16 8 1 8 27 7 5 16 2 3 4 2 3 4 Unit inch W H D 38 3 16 11 13 16...

Page 10: ...7 Technical Information Service Manual 3 2 Outdoor Unit Unit inch 35 13 3 8 27 9 16 15 5 8 38 14 5 16 22...

Page 11: ...pe side Gas pipe side Strainer Electron expansion valve Strainer Accumlator Compressor Indoor unit Outdoor unit Accumlator COOLING Discharge Suction Heat exchanger evaporator Heat exchanger condenser...

Page 12: ...D Red BU Blue Grounding wire YEGN Yellow Green BK Black VT Violet OG Orange Note Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model 600007000575 67 33 1 3...

Page 13: ...7 5 1 9 9 3 16 21 7521 9 0 2 1 1 02725 1 LURQ VKHOO PRWRU RQO DSSOLHV WR WKH 1RWH 0RWRU JURXQG 9 9 3 16 21 1 7521 9 2 7 50 1 7 03 6 1625 867 7 03 6 1625 2875220 28778 7 03 6 1625 8 203 9 203 6 7 29 B...

Page 14: ...health function neutral wire 4 Interface of 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 indo...

Page 15: ...three phase input interface Terminal of system high pressure protection Compressor overload protection terminal Terminal of electronic expansion valve Terminal for low pressure protection Interface of...

Page 16: ...ndoor 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...

Page 17: ...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 18: ...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 19: ...to indoor unit during operation Replace new batteries of the same model when replacement is required When you don t use remote controller for a long time please take out the batteries If the display...

Page 20: ...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 above 5 Fan...

Page 21: ...be still in standby mode after finishing refrigerant recycling if the unit is in ON status before refrigerant recycling it will still run in original operation mode 11 Ambient temperature display cont...

Page 22: ...If the compressor is shut down and Tsetup Tindoor ambient temperature Tcooling indoor ambient temperature compensation 32 9 F start up the machine for cooling the cooling operation will start 2 Durin...

Page 23: ...ed on 2 Defrosting a Defrosting starts the compressor is shut down and restarts it after 55 second delay b Defrosting ends the compressor stops then starts it after 55 second delay 2 Outer Fans Contro...

Page 24: ...it should not be started and should be stopped to treat according to the overload protection Clear the trouble at the mode of power turn off heating and the protection times are not counted 2 Frequen...

Page 25: ...ature at normal speed during discharging you should limit the frequency raising of compressor 3 Reducing frequency at normal speed and stopping machine If Tfrequency reducing temperature at normal spe...

Page 26: ...e compressor frequency by reducing 30Hz 90s till the lower limit After it was running 90s at the lower limit if Tfrequency reducing temperature at normal speed of module T Module you should stop the m...

Page 27: ...regarded as four way valve reversion abnormity And then it can run if stop the reversion abnormity protection for four way valve 3 min and if it still cant run when the reversion abnormity protection...

Page 28: ...eration 3 When 32 F Toutdoor amb 35 6 F the electric heating of chassis will keep original status 7 Electric Heating Function of Compressor 1 When Toutdoor amb 23 F compressor stops operation while th...

Page 29: ...the unit adequately grounded The grounding wire cant 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 30: ...sure rise or compressor rupture resulting in injury 4 During refrigerant recovery make sure that liquid valve and gas valve are fully closed and power is disconnected before detaching the connection p...

Page 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...

Page 32: ...At least 8 At least 72 At least 6 At least 6 Space to the wall S p a c e t o t h e o b s t r u c t i o n r o o l f e h t o t e c a p S Space to the obstruction Drainage pipe Space to the wall Space to...

Page 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...

Page 34: ...ces with special circumstances 7 Do not use the unit in the immediate surroundings of a laundry a bath ashower or a swimming pool 2 Grounding Requirement 1 The air conditioner is first class electric...

Page 35: ...5 Connect the Pipe of Indoor Unit 1 Aim the pipe joint at the corresponding bellmouth As show in Fig 5 2 Pretightening the union nut with hand 3 Adjust the torque force by referring to the following s...

Page 36: ...th of drain 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 Th...

Page 37: ...he wiring terminal according to the color fix them with screws As show in Fig 23 6 Neaten the Pipes 1 The pipes should be placed along the wall bent reasonably and hidden possibly Min semidiameter of...

Page 38: ...T to check whether the operation is normal or not If the ambient temperature is lower than 16 the air conditioner cant start cooling 2 Leakage Detection 1 With leakage detector Check if there is leaka...

Page 39: ...remove the cover of electric box 2 As shown in the fig below connect the plug of discharge resistance about 100ohm 20W if there is no discharge resistance you can use the plug of soldering iron to poi...

Page 40: ...37 Installation and Maintenance Service Manual 9 2 Error Code List 13 Malfunction of detecting plate WIFI JF Only for the mode with this function...

Page 41: ...al It s the normal state Off 3s and blink once during blinking ON 10s and Off 05s Defrosting will occur in heating mode Compressor will operate while indoor fan will stop Complete unit current detecti...

Page 42: ...39 Installation and Maintenance Service Manual...

Page 43: ...inboard 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 Y...

Page 44: ...ain board that is of the same model Replace a new main board that is of the same model It s the malfunction of main board Then check whether the voltage between terminal 2 and terminal 3 of the motor...

Page 45: ...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 46: ...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 47: ...anual Start Is malfunction eliminated The end check if the connection wire are correctly connected Replace the detecting plate with the same model Replace the mainboard with the same model Yes Yes No...

Page 48: ...Test 6 Both ends of electrolytic capacitor C47 C47 12V power DC 12V 13V Test 7 Both ends of electrolytic capacitor C60 C60 5V power DC 5V Test 8 Both ends of electrolytic capacitor C73 C73 3 3V power...

Page 49: ...ault 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 supply Voltage within 210VAC 250VAC Shut...

Page 50: ...ompressor COMP is well connected If they are loosened If the connection sequence is correct Is voltage input in the normal range Test the voltage between L N of wiring board XT by DC voltage meter If...

Page 51: ...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 ac...

Page 52: ...1 Check if fan terminal OFAN is connected well 2 Test if resistance value of any two terminals is less than 1k with ohmic meter If the indoor and outdoor fan work well After the unit de energized for...

Page 53: ...re COMP UVW is well connected and connection sequence is correct Replace control board AP1 Replace the compressor If malfunction is removed If the stop time of compressor is more than 3min N If the st...

Page 54: ...an works normally If the stop time of compressor is more than 3min Synchronism after energize the unit and start it Connect wire well Synchronism occurred during operation Replace control board AP1 If...

Page 55: ...ing diagram Replace EKV coil of electron expansion valve If the wiring terminal FA of electron expansion is well connected Remove malfunction The resistance value of first 4 l ead foot an d th e fifth...

Page 56: ...Start Check communication circuit of outdoor unit Problem of communication circuit Check built in wiring of indoor and outdoor unit Connection correct Malfunction of circuit is detected with control...

Page 57: ...er Number jumping Outdoor unit malfunction Test voltage value with Test 13 position in diagram with voltage meter Number jumping Test voltage value with Test 11 position in diagram with voltage meter...

Page 58: ...hod for details Malfunction of compressor Compressor cant operate Refer to point 5 of maintenance method for details 9 4 Troubleshooting for Normal Malfunction 1 Air conditioner cant be started up 2 P...

Page 59: ...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 causes Discriminating m...

Page 60: ...ual 10 Exploded View and Parts List 10 1 Indoor Unit 36 35 1 10 2 3 4 5 6 7 8 9 11 12 13 14 15 16 18 19 20 21 25 26 27 28 29 32 31 24 33 34 37 38 39 22 23 17 30 10 The component picture is only for re...

Page 61: ...24212177 24212177 1 16 Evaporator Assy 011001000207 011001000207 1 17 Cross Flow Fan 10352060 10352060 1 18 Fan Motor 1501214503 1501214503 1 19 Motor Press Plate 26112511 26112511 1 20 Wall Mounting...

Page 62: ...ntenance Service Manual 10 2 Outdoor Unit The component picture is only for reference please refer to the actual product 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 2...

Page 63: ...sy 07130239 1 12 Cut off Valve Sub Assy 07133204 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 71010003 1 18 Temp...

Page 64: ...61 Installation and Maintenance Service Manual The component picture is only for reference please refer to the actual product 31 LI018HO 180P432...

Page 65: ...Cut off Valve 07130239 1 12 Cut off Valve Sub Assy 07133204 1 13 Right Side Plate 0130509403P 1 14 Valve Cover 22245002 1 15 Retaining Plate 02115006P 1 16 Handle Assy 02113109 1 17 Valve Support Blo...

Page 66: ...efrigerant completely before removal 1 Remove filter assy Open the front panel Push the left and right filters to make them break away from the groove on the front case Then remove the left and right...

Page 67: ...y and take S wing motor Screw off the screws that are locking the swing motor and take the motor off it out 4 Remove electric box cover 2 and detecting plate WIFI Remove the screws on the electric box...

Page 68: ...the indoor tube temperature sensor Screw off one grounding screw Remove the wiring terminals of motor and stepping motor Remove the electric box assy Screw off the screws that are locking each lead w...

Page 69: ...lation and Maintenance Service Manual R ear case assy First remove the left side of evaporator from the groove on the rear case assy Then remove the right side from the clasp on the rear case assy Gro...

Page 70: ...67 Installation and Maintenance Service Manual...

Page 71: ...alve 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 the panel grille Remove t...

Page 72: ...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 73: ...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 74: ...hen remove the isolation plate Unsolder the welding joints connecting the 4 way valve assy with capillary sub assy compressor and condenser remove the 4 way valve Note Before unsoldering the welding j...

Page 75: ...of discharge pipe and suction pipe from foreign objects Remove the screws connecting the support condenser and condenser assy and then remove the support condenser Remove the 2 screws fixing the cond...

Page 76: ...3 82 83 82 4 28 66 67 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 16 40ft 24 61ft 26 25ft 2 Min length of connection pipe is 9 84ft 3 Max length...

Page 77: ...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 78: ...2 358 233 6 0 717 24 8 60 23 95 9 779 165 2 2 28 235 4 0 697 26 6 57 18 96 8 9 382 167 2 206 237 2 0 678 28 4 54 31 98 6 9 003 168 8 2 133 239 0 66 30 2 51 59 100 4 8 642 170 6 2 064 240 8 0 642 32 4...

Page 79: ...95 13 04 165 2 3 04 235 4 0 93 26 6 76 24 96 8 12 51 167 2 94 237 2 0 904 28 4 72 41 98 6 12 168 8 2 844 239 0 88 30 2 68 79 100 4 11 52 170 6 2 752 240 8 0 856 32 65 37 102 2 11 06 172 4 2 663 242 6...

Page 80: ...342 8 77 49 19 147 2 10 54 217 4 3 04 8 6 323 9 78 8 47 08 149 10 18 219 2 2 955 10 4 306 2 80 6 45 07 150 8 9 827 221 2 872 12 2 289 6 82 4 43 16 152 6 9 489 222 8 2 792 14 274 84 2 41 34 154 4 9 165...

Page 81: ...t 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 trademarks o...

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