Lennox LI009HI-230P432 Page 150 Service Manual Download

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147

Installation and Maintenance

Service Manual

Steps

15.Remove left side plate

left side plate

Twist off the screws connecting the left side plate
and chassis with screwdriver, and then remove
the left side plate.

Pull it upwards to separate the chassis and
condenser.

16.Remove chassis and condenser

chassis

condenser

Procedure

Summary of Contents for LI009HI-230P432

Page 1: ...LENNOX air conditioners Service Manual Models LI009HI 230P432 LI009HO 230P432 LI012HI 230P432 LI012HO 230P432 LI018HI 230P432 LI018HO 230P432 LI024HI 230P432 LI024HO 230P432 LI036HI 180P432 LI036HO 18...

Page 2: ...Part 16 5 1 Wiring Diagram 16 5 2 PCB Printed Diagram 21 6 Function and Control 29 6 1 Remote Controller Introduction 29 6 2 Brief Description of Modes and Functions 33 Part Installation and Maintenan...

Page 3: ...0 1 Indoor Unit 98 10 2 Outdoor Unit 106 11 Removal Procedure 114 11 1 Removal Procedure of Indoor Unit 114 11 2 Removal Procedure of Outdoor Unit 133 Appendix 148 Appendix 1 Reference Sheet of Celsiu...

Page 4: ...t Technical Information Indoor Unit LI009HI 230P432 LI012HI 230P432 LI018HI 230P432 LI024HI 230P432 LI036HI 180P432 Outdoor Unit LI009HO 230P432 LI012HO 230P432 Remote Controller YAA1FB F C H O U R ON...

Page 5: ...Model of indoor unit LI009HI 230P432 LI012HI 230P432 Indoor Unit Product Code Y6752 Y6754 Fan Type Cross flow Cross flow Diameter Length DXL inch 3 55 64X25 3 55 64X25 Fan Motor Cooling Speed SH H M L...

Page 6: ...ir Flow Volume of Outdoor Unit CFM 1059 1177 Fan Type Axial flow Axial flow Fan Diameter inch 15 3 4 15 3 4 Defrosting Method Automatic Defrosting Automatic Defrosting Climate Type T1 T1 Isolation I I...

Page 7: ...oor Unit Model of indoor unit LI018HI 230P432 LI036HI 180P432 Indoor Unit Product Code Y6756 Y6685 Fan Type Cross flow Cross flow Diameter Length DXL inch 4 1 6X27 13 16 4 1 4X20 9 16X2 Fan Motor Cool...

Page 8: ...tor Capacitor F Air Flow Volume of Outdoor Unit CFM 3200 2589 Fan Type Axial flow Axial flow Fan Diameter inch 20 15 32 21 21 32 Defrosting Method Automatic Defrosting Automatic Defrosting Climate Typ...

Page 9: ...yd2 32 29 50 23 Indoor Unit Model of indoor unit LI024HI 230P432 Indoor Unit Product Code Y6758 Fan Type Cross flow Diameter Length DXL inch 4 1 4X32 7 10 Fan Motor Cooling Speed SH H M L r min 1300 1...

Page 10: ...ir Flow Volume of Outdoor Unit CFM 2354 Fan Type Axial flow Fan Diameter inch 21 21 32 Defrosting Method Automatic Defrosting Climate Type T1 Isolation I Moisture Protection IP24 Permissible Excessive...

Page 11: ...lengt 24 6ft Conditions Indoor DB80 F WB66 9 F Outdoor DB95 F Indoor air flow High Pipe lengt 24 6ft 2 2 Operation Characteristic Curve Cooling 09 12K 18 24K 36K Heating 0 10 20 30 40 50 60 70 90 0 1...

Page 12: ...Temperature 09 12K 18 24K 36K Cooling Heating Cooling Heating 4 5 14 110 100 90 80 70 60 50 40 23 32 41 50 Outdoor temp F Capacity ratio 89 6 91 4 93 2 95 96 8 98 6 100 4 102 2 109 4 104 105 8 107 6...

Page 13: ...it Fan speed of outdoor unit Compressor revolution rps Indoor Outdoor P PSIG T1 F T2 F 70 60 19 94 19 04 09K 362 406 in 167 181 4 out 98 6 113 in 33 8 37 4 out 35 6 42 8 Super High High 65 12K 362 406...

Page 14: ...60 20 30 40 50 60 70 80 90 100 Compressor frequency Hz Noise dB A Heating Cooling Indoor side noise Outdoor side noise 18 24K 36K 30 40 50 60 L M 36K 30K 30K H SH Indoor fan motor rating speed Noise d...

Page 15: ...33 1 4 8 7 32 11 3 8 4 43 64 7 1 4 21 21 64 2 1 6 2 1 6 1 3 8 1 3 8 5 3 19 64 W D H 4 27 7 13 64 5 1 2 7 1 2 1 1 2 1 1 2 2 1 6 2 1 6 3 7 64 6 1 21 32 8 7 64 27 7 21 64 2 3 4 2 3 4 18K 09 12K 24K Mode...

Page 16: ...13 Technical Information Service Manual 3 2 Outdoor Unit Unit inch 23 5 16 11 1 4 30 10 12 19 32 33 25 64 23 5 16 Unit inch 35 13 13 32 27 9 16 15 19 32 38 14 21 64 22 18K 09 12K...

Page 17: ...14 Technical Information Service Manual 24 36K Unit inch 14 37 64 31 7 64 16 13 16 15 9 16 39 1 2 24 36 2 9...

Page 18: ...quid pipe 1 4 Gas pipe 3 8 09K Gas pipe 1 2 12K Gas pipe 5 8 18 24 36K Indoor unit Outdoor unit COOLING HEATING 4 Way valve Discharge Suction Heat exchanger evaporator Heat exchanger condenser Valve V...

Page 19: ...to determine fan speed and the swing angle of horizontal lover for this model LI009HI 230P432 LI012HI 230P432 67 33 1 3 2 7 50 1 9 325 725 1 02725 803 3 0 1 2 5 1 1 1 1 1 7 8 20 287 20 0 18 211 725 3...

Page 20: ...E Please don t touch any electronic component and terminal when the machine is running stopping or has been powered off for less than 3 minutes to prevent electric shock LI018HI 230P432 67 33 1 3 2 7...

Page 21: ...ZKHQ WKH PDFKLQH LV UXQQLQJ VWRSSLQJ RU KDV EHHQ SRZHUHG RII IRU OHVV WKDQ PLQXWHV WR SUHYHQW HOHFWULF VKRFN 287 225 81 7 8 5 1 1 1 7 50 1 2 5220 7 03 78 7 03 6 1625 6 1625 63 2 5 5 9 5 1 0 1 2 5 0 02...

Page 22: ...35 17 5 8 7 2 5 29 5 2 3527 725 8 5 1 7 1 7 2035 6625 2 1 7 3 2 1 225 81 7 7 50 1 2 32 5 1 7 5 27720 7 7 1 97 9 9 9 97 1 63610000137 Outdoor Unit LI018HO 230P432 6361000044801 7 5 9 9 9 97 97 21 7 5...

Page 23: ...2875220 7 03 6 1625 867 7 03 6 1625 1 1 35 17 5 8 7 2 5 5 725 8 9 20 27720 7 7 1 7 5 2035 6625 1 7 5 33 35 6685 6 7 3 3 16 21 9 9 7521 9 9 33 3 6 7 35 6685 2 2 1 8 1 127 0RWRU JURXQG RQO DSSOLHV WR W...

Page 24: ...nit Top view Bottom view 1 Neutral wire 2 DC fan 3 Auto button 4 Up down swing 5 Interface of temperature sensor 6 Interface of wired controller 7 Display interface 8 Jumper interface 9 Fuse 10 Interf...

Page 25: ...wing Temperature sensor 7 Interface of wired controller 8 Display interface 9 Terminal with outdoor unit communication wire 10 Interface of live wire 11 Fuse 12 13 14 Protection grounding wire Interfa...

Page 26: ...5 6 Left right swing Temperature sensor 7 Interface of wired controller 8 Display interface 9 Terminal with outdoor unit communication wire 10 Interface of live wire 11 Fuse 12 13 14 Protection ground...

Page 27: ...er switch 7 High frequency transformer 8 Interface of fan motor 9 Buzzer 10 Interface of display 11 Interface of display 12 Indoor tube temperature sensor interface 13 Ambient temperature sensor inter...

Page 28: ...25 Technical Information Service Manual 2 1 3 4 5 6 8 7 9 10 11 12 13 14 15 Top view Bottom view LI009HO 230P432 LI012HO 230P432 Outdoor Unit...

Page 29: ...tection 5 Interface of temperature sensor 6 Overload interface of compressor 7 electronic expansion valve 8 Interface of DC fan 9 compressor electric heater interface 10 4 way valve interface 11 2 way...

Page 30: ...e 2 Compressor overload protector 3 Temperature sensor 4 Electric expansion valve 5 Outdoor fan 6 4 way valve 7 Communication interface with indoor unit 8 Live wire 9 Earthing wire 10 Neutral wire 11...

Page 31: ...rminal of compressor OVC COMP 7 Terminal of 4 way valve 12 Protective tube FU101 3 Terminal of temp sensor CN2 8 Electric heater band of chassis HEAT2 L 13 Terminal of ground wire 4 High pressure prot...

Page 32: ...OFF Child lock Up down swing Set fan speed ventilation operation Light Temp display type Set temp Outdoor ambient temp Indoor ambient temp Sleep mode Clock Heat mode Fan mode Dry mode Cool mode Auto...

Page 33: ...30 Technical Information Service Manual no display...

Page 34: ...31 Technical Information Service Manual...

Page 35: ...32 Technical Information Service Manual battery Cover of battery box remove reinstall...

Page 36: ...erature is the set value under each condition Ambient temperature is Tamb Tcompensation for heat pump unit and Tamb for cooling only unit 4 If there s I feel function Tcompensation is 0 Others are sam...

Page 37: ...e 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 contr...

Page 38: ...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 During o...

Page 39: ...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 40: ...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 41: ...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 42: ...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 43: ...egarded 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 can t run when the reversion abnormity protection...

Page 44: ...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 45: ...e original state If Tevap 42 8 F and the compressor has remained at OFF for at least 3 minutes the compressor will resume its original operation state Total current up and frequency down protection If...

Page 46: ...is performed according to the program or after the unit is withdrawn from defrost the indoor ambient temperature before the defrost symbol is cleared Total current up and frequency down protection If...

Page 47: ...compressor will not be startedagain Overload protection If temperature sensed by the overload sensor is over 239 F the compressor will stop and the outdoor fan will stop with atime lag of 30 seconds I...

Page 48: ...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 49: ...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 Torq...

Page 50: ...east 19 2 3 At least 11 4 5 At least 118 At least 78 3 5 Space to the floor Space to the obstruction Space to the obstruction Space to the obstruction Space to the ceiling Space to the obstruction Spa...

Page 51: ...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 52: ...with specialized grounding device by a professional Please make sure it is always grounded effectively otherwise it may cause electric shock 2 The yellow green wire in air conditioner is grounding wir...

Page 53: ...ame 1 Choose the position of piping hole according to the direction of outlet pipe The position of piping hole should be a little lower than the wall mounted frame As show in Fig 1 5 Connect the Pipe...

Page 54: ...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 pi...

Page 55: ...he pipe joint at the bellmouth of pipe As show in Fig 22 3 Pretightening the union nut with hand 4 Tighten the union nut with torque wrench Hex nut diameter Tightening torque ft Ibf 1 4 11 10 4 75 3 8...

Page 56: ...g vent 2 Connect the charging hose of piezometer to the refrigerant charging vent of gas valve and then connect the other charging hose to the vacuum pump 3 Open the piezometer completely and operate...

Page 57: ...tube sensor open or short circuit Outdoor ambient sensor open or short circuit Indoor tube sensor open or short circuit Indoor ambient sensor open or short circuit Indoor unit and outdoor unit doesn t...

Page 58: ...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 point A and B of el...

Page 59: ...and Maintenance Service Manual 18 24K Malfunction of zero cross derection U8 Off 3s and blink 17 times The complete unit stops 1 Power supply is abnormal 2 Detection circuit of indoor control mainboar...

Page 60: ...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 61: ...58 Installation and Maintenance Service Manual...

Page 62: ...protection E5 OFF 3S and blink 5 times OFF 1S and blink 5 times During cooling and drying operation compressor and outdoor fan stop while indoor fan operates During heating operation all loads stop 1...

Page 63: ...Outdoor ambient temperature sensor is open short circuited F3 OFF 3S and blink 3 times OFF 1S and blink 6 times During cooling and drying operating compressor stops while indoor fan operates During h...

Page 64: ...wiring board XT if the voltage 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 capacito...

Page 65: ...nction analysis of capacitor 29 Malfunction of module temperature sensor circuit P7 OFF 3S and blink 18 times During cooling and drying operation compressor will stop while indoor fan will operate Dur...

Page 66: ...malfunction 5 Malfunction of mainboard rev detecting circuit 37 Desynchro nizing of compressor H7 OFF 3S and blink 7 times During cooling and drying operation compressor will stop while indoor fan wi...

Page 67: ...ge is unstable 45 Malfunction of complete units current detection U5 OFF 3S and blink 13 times During cooling and drying operation the compressor will stop while indoor fan will operate During heating...

Page 68: ...on Indicator Cool Indicator Heating Indicator Yellow Indicator Red Indicator Green Indicator 52 Normal communica tion 53 Defrosting OFF 3S and blink once during blinking ON 10s and OFF 0 5s OFF 0 5S a...

Page 69: ...66 Installation and Maintenance Service Manual...

Page 70: ...Possible reasons insufficient or too much refrigrant blockage of capillary an dincrease of suction temp improper running of compressor burning in or stuck of bearing damage of discharge valve malfunct...

Page 71: ...osened or poorly contacted Is there short circuit due to trip over of the parts Is the temperature sensor broken Is mainboard broken Malfunction diagnosis process 1 Malfunction of Temperature Sensor F...

Page 72: ...he 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 the louvers are opened...

Page 73: ...on 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...

Page 74: ...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 75: ...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 76: ...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 77: ...harges 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 normal Conclusion U8 is...

Page 78: ...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 supply Voltage within 210VAC 250VAC Sh...

Page 79: ...ure 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 wiring board XT Is the comp...

Page 80: ...oltage 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 accordin...

Page 81: ...gh 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 unit abnormal Normal protec...

Page 82: ...for compressor stopping enough Fault diagnosis process Y N Y N N Y Y N Power on the unit Is stop time of the compressor longer than 3 minutes Restart it up after 3 minutes Does startup fail Are the w...

Page 83: ...e 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 eliminated Replace...

Page 84: ...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 four pins close t...

Page 85: ...ny 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 the two terminals Is the resi...

Page 86: ...pment 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 Check the communication circuit of t...

Page 87: ...e main board AP1 of the outdoor unit If the fault is eliminated Is the connection right Check the wiring of the indoor and outdoor units with reference to the wiring diagram Correctly connect the corr...

Page 88: ...r swing louver is fully open Check if the capacity output of outdoor unit is equal to the capacity demand of indoor units Check if the indoor outdoor filters or radiating fins are dirty or blocked Cle...

Page 89: ...f power DC 180V 380V Test 5 Two ends of diode D15 D15 IPM modular 15V power supply DC 14 5V 15 6V Test 6 Two ends of electrolytic capacitor C715 C715 12V power supply DC 12V 13V Test 7 Two ends of ele...

Page 90: ...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 91: ...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 92: ...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 93: ...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 94: ...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 95: ...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 96: ...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 97: ...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 98: ...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 99: ...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 100: ...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 101: ...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 actual product LI012HI 230P432 LI009HI 230P...

Page 102: ...porator Support 24212174 24212174 1 12 Evaporator Assy 01002000030 0100200003001 1 13 Wall Mounting Frame 01252484 01252484 1 14 Cross Flow Fan 10352056 10352056 1 15 Fan Motor 1501246601 1501246601 1...

Page 103: ...100 Installation and Maintenance Service Manual The component picture is only for reference please refer to the actual product LI018HI 230P432...

Page 104: ...26152025 1 16 Evaporator Support 24212177 1 17 Evaporator Assy 01100100085 1 18 Cross Flow Fan 10352060 1 19 Fan Motor 15012136 1 20 Motor Press Plate 26112511 1 21 Wall Mounting Frame 01362026 1 22 C...

Page 105: ...ntenance Service Manual 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 38 34 35 36 37 The component picture is only for reference please refer to the actual...

Page 106: ...otor Press Plate 26112515 1 17 Fan Motor 15012136 1 18 Connecting pipe clamp 26112514 1 19 Drainage Hose 0523001405 1 20 Stepping Motor 1521240212 1 21 Crank 73012005 1 22 Guide Louver 1051232001 1 23...

Page 107: ...e Manual 2 4 5 6 7 10 11 15 17 20 21 22 40 41 42 35 34 32 30 16 39 38 37 31 33 14 36 8 12 13 29 1 3 9 18 19 23 24 25 26 28 27 B2 panel A3 panel The component picture is only for reference please refer...

Page 108: ...sub assy 26152028 1 19 Cross Flow Fan 2 10352040 1 20 O Gasket sub assy of Bearing 76512051 1 21 Left Evaporator Support 24212041 1 22 Evaporator Assy 01002000027 1 23 Wall Mounting Frame 01252398 1...

Page 109: ...106 Installation and Maintenance Service Manual The component picture is only for reference please refer to the actual product LI009HO 230P432 LI012HO 230P432 10 2 Outdoor Unit...

Page 110: ...3010 1 16 Cable Cross Plate 1 02123013P 02123013P 1 17 Cable Cross Plate 2 02123014P 02123014P 1 18 Right Side Plate 0130306903 0130509901P 1 19 4 Way Valve Assy 03073083 03015200098 1 20 4 Way Valve...

Page 111: ...Maintenance Service Manual LI018HO 230P432 6 5 4 3 2 1 36 34 33 7 8 9 17 20 29 30 31 32 28 27 26 22 23 24 25 21 19 16 15 14 13 12 11 10 18 35 The component picture is only for reference please refer t...

Page 112: ...000090 1 16 Rear Grill 01475020 1 17 Wiring Clamp 18 Temperature Sensor 3900030902 1 19 Handle 26233053 1 20 Cut off Valve 07133844 1 21 Valve Cover 22245002 1 22 Cut off Valve 07133844 1 23 Valve Sup...

Page 113: ...ion and Maintenance Service Manual LI024HO 230P432 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 The component picture is only for reference please refer to the a...

Page 114: ...1 12 Motor Support Sub Assy 01705025 1 13 Condenser Support Plate 01175092 1 14 Clapboard Sub Assy 01235040 1 15 Condenser Assy 01100200162 1 16 Rear Grill 01475013 1 17 Wiring Clamp 26115004 1 18 Te...

Page 115: ...ance Service Manual 2 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 4 5 3 1 LI036HO 180P432 The component picture is only for reference please...

Page 116: ...4 1 16 Valve cover 22245003 1 17 Retaining plate 02115006P 1 18 Handle assy 02113109 1 19 Wiring clamp 26115004 1 20 Electronic expansion valve Sub Assy 07133688 1 21 Temperature Sensor 3900031001 1 2...

Page 117: ...out the axile bush on horizontal louver Bend the horizontal louver with hand and then separate the horizontal louver from the crankshaft of step motor to remove it Horizontal louver Location of step m...

Page 118: ...nt case sub assy is different for different models Loosen the connection clasps between vertical louver and bottom case to remove vertical louver Loosen the connection clasps between front case sub as...

Page 119: ...ounding 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 the s...

Page 120: ...e 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 holder connector Proced...

Page 121: ...he 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 fixing step motor and the...

Page 122: ...d right filters to make them break away from the groove on the front case Then remove the left and right filters one by one Left filter Groove Right filter Front case Front panel Screw off the 2 screw...

Page 123: ...Service Manual Loosen the connection clasps between front case sub assy and bottom case Lift up the front case sub assy and take S wing motor Screw off the screws that are locking the swing motor and...

Page 124: ...t 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...

Page 125: ...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 126: ...123 Installation and Maintenance Service Manual...

Page 127: ...e Service Manual Steps Procedure 1 Before disassembly of the unit 2 Remove filter panel clasps filter Axonometric drawing for the complete unit Open the panel Loosen the clasps on the filter Draw out...

Page 128: ...5 Remove horizontal louver clasps panel horizontal louver Remove screws fixing display and then remove the display Pull the clasps at both sides slightly and then remove the panel Remove the axial bu...

Page 129: ...c box 7 Remove front case screw top cover of electric box screw cap screw front case Procedure Steps Remove screws fixing the top cover of electric box Remove the top cover of electric box Remove the...

Page 130: ...e 8 Remove earthing wire 9 Remove electric box cover screw clasp clasp electric box cover Remove earthing screws and then remove the earthing wire Loosen clasps at the left side of electric box Loosen...

Page 131: ...al a b c Procedure Steps 10 Remove temperature sensor 11 Remove electric box temperature sensor screw electric box Pull out the indoor temperature sensor Pull out 6 sockets on PCB board Pull out two s...

Page 132: ...r tray connection position for indoor and outdoor units connection pipe pipe stopping plate screw screw damping board Pull the water tray upwards and then remove the water tray Separate the connection...

Page 133: ...te of motor screw evaporator screw Remove screws between evaporator and bottom case Turn over the indoor unit and adjust the pipe line to the position as shown by the broken line Lift up the evaporato...

Page 134: ...ation and Maintenance Service Manual a Procedure Steps b c 18 Remove cross flow blade and motor blade motor Remove screws fixing cross flow blade and motor Remove the motor sub assy Separate two cross...

Page 135: ...132 Installation and Maintenance Service Manual a b Procedure Steps 19 Remove cushion rubber cushion rubber Remove the cushion rubber on cross flow blade Remove the cushion rubber from the base...

Page 136: ...on screws connecting the top cover plate with the front panel and the right side plate and then remove the top cover Remove connection screws between the front grille and the front panel Then remove t...

Page 137: ...low 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...

Page 138: ...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 139: ...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 140: ...remove the big handle 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...

Page 141: ...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 142: ...he 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 wiri...

Page 143: ...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 144: ...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 145: ...anel 3 Remove front side panel front side panel Loosen the screws connecting the front side panel and chassis Remove the front side panel Procedure valve cover Remove the screw connecting the big hand...

Page 146: ...the panel Twist off the screws connecting the grille and panel and then remove the grille 5 Remove right side plate right side plate Twist off the screws connecting the right side plate and chassis v...

Page 147: ...pliers pull out the wiring terminal pull it upwards to remove the electric box electric box fireproofing Twist off the screws on electric box fireproofing with screwdriver and then remove the electric...

Page 148: ...e motor support Twist off the screws connecting isolation sheet and end plate of condenser and chassis and then remove the isolation sheet 11 Remove 4 way valve 10 Remove isolation sheet isolation she...

Page 149: ...ng joint wrap the gas valve with wet cloth completely to avoid the damage to valve and release all refrigerant completely at first Unsolder the soldering joint between liquid valve and connection pipe...

Page 150: ...left side plate left side plate Twist off the screws connecting the left side plate and chassis with screwdriver and then remove the left side plate Pull it upwards to separate the chassis and conden...

Page 151: ...perature Fahrenheit Celsius 32 33 32 0 55 56 55 4 13 79 80 78 8 26 34 35 33 8 1 57 58 57 2 14 81 80 6 27 36 35 6 2 59 60 59 15 82 83 82 4 28 37 38 37 4 3 61 62 60 8 16 84 85 84 2 29 39 40 39 2 4 63 62...

Page 152: ...teps 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 shaper and prevent...

Page 153: ...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 49 0...

Page 154: ...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 155: ...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 156: ...at www lennox com or contact us at 1 877 726 0024 2014 Lennox Industries Inc For a complete list of the registered and common law trademarks owned by Lennox Industries Inc please visit www lennox com...

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