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Service Manual

Table of Contents

Table of Contents

Part

Ⅰ

: Technical Information

.......................................................................1

1. Summary

......................................................................................................................1

2. Specifications

..........................................................................................................2

2.1 Specification Sheet

...........................................................................................................2

2.2 Operation Characteristic Curve

........................................................................................6

2.3 Capacity Variation Ratio According to Temperature

.........................................................6

2.4 Cooling and Heating Data Sheet in Rated Frequency

.....................................................6

2.5 Noise Curve

......................................................................................................................7

3. Outline Dimension Diagram

.........................................................................................8

3.1 Indoor Unit ........................................................................................................................8

3.2 Outdoor Unit

.....................................................................................................................9

4. Refrigerant System Diagram

....................................................................10

5. Electrical Part

.........................................................................................................11

5.1 Wiring Diagram ...............................................................................................................11
5.2 PCB Printed Diagram .....................................................................................................14

6. Function and Control

......................................................................................18

6.1 Remote Controller Introduction

......................................................................................18

6.2 Brief Description of Modes and Functions

......................................................................22

Part

Ⅱ

: Installation and Maintenance

.................................................33

7. Notes for Installation and Maintenance

..........................................33

8. Installation

................................................................................................................35

8.1 Installation Dimension Diagram ......................................................................................35

8.2 Installation Parts-checking

............................................................................................37

8.3 Selection of Installation Location ....................................................................................37

8.4 Electric Connection Requirement

...................................................................................37

8.5 Installation of Indoor Unit ................................................................................................37

8.6 Installation of Outdoor

Unit .............................................................................................40

8.7 Vacuum Pumping and Leak Detection

...........................................................................41

8.8 Check after Installation and Test

Operation ...................................................................41

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Содержание Y6334

Страница 1: ...u for selecting LENNOX air conditioners Service Manual Models LI009HI 160T432 LI009HO 160T432 LI012HI 160T432 LI012HO 160T432 LI018HI 160T432 LI018HO 160T432 LI024HI 160T432 LI024HO 160T432 Refrigeran...

Страница 2: ...10 5 Electrical Part 11 5 1 Wiring Diagram 11 5 2 PCB Printed Diagram 14 6 Function and Control 18 6 1 Remote Controller Introduction 18 6 2 Brief Description of Modes and Functions 22 Part Installati...

Страница 3: ...ded View and Parts List 63 10 1 Indoor Unit 63 10 2 Outdoor Unit 67 11 Removal Procedure 71 11 1 Removal Procedure of Indoor Unit 71 11 2 Removal Procedure of Outdoor Unit 81 Appendix 94 Appendix 1 Re...

Страница 4: ...ion Service Manual 1 Summary Part Technical Information Indoor Unit LI009HI 160T432 LI012HI 160T432 LI018HI 160T432 LI024HI 160T432 Outdoor Unit LI018HO 160T432 LI024HO 160T432 LI009HO 160T432 LI012HO...

Страница 5: ...cation Area m2 12 18 16 24 Indoor Unit Indoor Unit Model LI009HI 160T432 LI012HI 160T432 Indoor Unit Product Code Y6732 Y6734 Fan Type Cross flow Cross flow Fan Diameter Length DXL mm 98X580 98X633 5...

Страница 6: ...denser Coil Length LXDXW mm 710X19 05X508 710X38 1X506 Fan Motor Speed rpm 900 900 Fan Motor Power Output W 30 30 Fan Motor RLA A 0 36 0 36 Fan Motor Capacitor F Outdoor Unit Air Flow Volume m3 h 1600...

Страница 7: ...34 23 34 Indoor Unit Indoor Unit Model LI018HI 160T432 LI024HI 160T432 Indoor Unit Product Code Y6736 Y6738 Fan Type Cross flow Cross flow Fan Diameter Length DXL mm 106X706 108X830 Cooling Speed SH H...

Страница 8: ...m 750 800 300 Fan Motor Power Output W 60 60 Fan Motor RLA A Fan Motor Capacitor F Outdoor Unit Air Flow Volume m3 h 3200 3200 Fan Type Axial flow Axial flow Fan Diameter mm 520 520 Defrosting Method...

Страница 9: ...acity ratio 30 40 50 60 70 80 90 100 110 120 10 7 5 0 5 10 15 20 Outdoor temp o C Capacity ratio Conditions Indoor DB20 C WB15 C Indoor air flow Super High Pipe length 5m Cooling Heating 2 4 Cooling a...

Страница 10: ...0 90 Noise dB A LI018HO 160T432 LI024HO 160T432 LI024HI 160T432 LI018HI 160T432 Indoor side noise when blowing Outdoor side noise when blowing Indoor fan motor rotating speed Compressor frequency Hz N...

Страница 11: ...9 5 55 55 54 123 5 542 179 5 83 2 124 7 35 55 55 35 104 685 181 140 190 38 55 55 38 79 154 43 206 685 187 70 70 43 Unit mm Model W H D LI009HI 160T432 790 275 200 LI012HI 160T432 845 289 209 LI018HI 1...

Страница 12: ...9 Technical Information Service Manual 963 892 700 396 560 341 396 3 2 Outdoor Unit Unit mm Unit mm LI009HO 160T432 LI012HO 160T432 LI018HO 160T432 LI024HO 160T432 776 257 320 712 510 540 286...

Страница 13: ...or unit COOLING HEATING 4 Way valve Discharge Suction Heat exchanger evaporator Heat exchanger condenser Valve Valve Liquid pipe side Gas pipe side Strainer Electric expand valve Strainer Capillary Co...

Страница 14: ...mpressor RD 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 7 6 1625 7 0...

Страница 15: ...RU KDV EHHQ SRZHUHG RII IRU OHVV WKDQ PLQXWHV WR SUHYHQW WKH ULVN 51 1 8 5 1 225 81 7 127 0RWRU DSSOLHV WR WKH LURQ VKHOO PRWRU JURXQG RQO 02725 RI HOHFWULF VKRFN 3OHDVH GRQ W WRXFK DQ WHUPLQDO ZKHQ W...

Страница 16: ...03 6 1625 28778 2875220 7 03 6 1625 867 7 03 6 1625 3 These circuit diagrams are subject to change without notice please refer to the one supplied with the unit Please don t touch any electronic compo...

Страница 17: ...wire interface of power supply 3 Interface of PG motor 4 Live wire interface of cold plasma Only for the model with this function 5 Interface of up down swing motor 6 Interface of indoor fan feedback...

Страница 18: ...m view No Name 1 Compressor 2 Reactor 2 3 Reactor 1 4 Chassis electric heating 5 Compressor electric heating 6 4 way valve 7 DC fan 8 Earthing wire 9 Communication wire 10 Neutral wire 11 Live wire 12...

Страница 19: ...temperature sensor 3 Terminal of electronic expansion valve 4 Terminal of outdoor fan 5 Terminal of 4 way valve 6 Terminal of compressorelectric heating 7 Terminal of chassis electric heating 8 Termin...

Страница 20: ...ad protection 6 Terminal of electronic expansion valve 7 Terminal of outdoor fan 8 Terminal of compressor electric heating 9 Terminal of 4 way valve 10 Terminal of compressor wire 11 Terminal of chass...

Страница 21: ...t mode Fan mode Dry mode Cool mode Auto mode Operation mode I feel Note After putting through the power the air conditioner will give out a sound Operation indictor is ON red indicator After that you...

Страница 22: ...indoor ambient temperature Set temperature range from remote controller 16 30 Fan speed auto low speed medium speed high speed 5 TURBO button Under COOL or HEAT mode press this button to turn to quick...

Страница 23: ...word ON will stop blinking icon resumes displaying Cancel TIMER ON Under the condition that TIMER ON is started up press TIMER ON button to cancel it TIMER OFF button TIMER OFF button can set the time...

Страница 24: ...adjusted Under energy saving function set temperature can t be adjusted Press TURBO button and the remote controller won t send signal Sleep function and energy saving function can t operate at the sa...

Страница 25: ...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 same as above 5 Fan m...

Страница 26: ...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 control...

Страница 27: ...enters into heating mode Compressor outdoor fan and 4 way valve start operation When 2 Tpreset Tindoor ambient temperature Tcompensation 1 unit operates according to the previous status When Tpreset...

Страница 28: ...mode Cold air prevention function is shielded If compressor is operating under this mode fan speed will adjust according to auto fan speed if compressor stops operation under this mode indoor fan will...

Страница 29: ...operation 1 If the compressor is shut down and Tset up Tindoor ambient temperature Tcooling indoor ambient temperature compensation 0 5 C start up the machine for cooling the cooling operation will s...

Страница 30: ...hed 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 Contr...

Страница 31: ...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 Frequenc...

Страница 32: ...ure 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 speed...

Страница 33: ...compressor frequency by reducing 30Hz 90s till the lower limit After it was running 90s at the lower limit if T frequency reducing temperature at normal speed of module TModule you should stop the mac...

Страница 34: ...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...

Страница 35: ...p operation 3 When 0 C Toutdoor amb 2 C the electric heating of chassis will keep original status 7 Electric Heating Function of Compressor 1 When Toutdoor amb 5 C compressor stops operation while the...

Страница 36: ...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 wire a...

Страница 37: ...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 38: ...east 15cm At least 15cm At least 250cm 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 the o...

Страница 39: ...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 40: ...The air conditioner is first class electric appliance It must be properly grounding with specialized grounding device by a professional Please make sure it is always grounded effectively otherwise it...

Страница 41: ...nsulating pipe Torque wrench Open end wrench Indoor pipe Pipe Union nut Union nut Pipe joint Pipe Hex nut diameter mm Tightening torque N m 6 15 20 9 52 30 40 12 45 55 16 60 65 19 70 75 Refer to the f...

Страница 42: ...separate the indoor power and then separate the drain hose As show in Fig 15 3 Bind them evenly 4 The liquid pipe and gas pipe should be bound separately at the end 2 Make the power connection wire go...

Страница 43: ...th bolts As show in Fig 20 4 Connect Indoor and Outdoor Pipes 1 Remove the screw on the handle and valve cover of outdoor unit and then remove the handle and valve cover As show in Fig 21 2 Remove the...

Страница 44: ...charging vent of gas valve and then connect the other charging hose to the vacuum pump 3 Open the piezometer completely and operate for 10 15min to check if the pressure of piezometer remains in 0 1MP...

Страница 45: ...ture sensor is open short circuited F1 Indoor evaporator temperature sensor is open short circuited F2 Module temperature sensor is open short circuited P7 Outdoor ambient temperature sensor is open s...

Страница 46: ...then peformedischarging NOTE A large capacity electrolytic capacitor is used in the outdoor unit controller inverter Therefore if the power supply is turned off charge charging voltage DC280V to 380V...

Страница 47: ...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 48: ...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...

Страница 49: ...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 50: ...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...

Страница 51: ...wiring diagram Is malfunction eliminated Is malfunction eliminated Is malfunction eliminated Is malfunction eliminated Main board matches with display board Main board of IDU matches with that of ODU...

Страница 52: ...on occurs after de energizing and turning on the unit Whether stop time for compressor is more than 3min No No No No No No No Yes Yes Yes Yes Yes No Yes Yes Yes Yes Whether valve of outdoor unit is op...

Страница 53: ...uch as clean heat exchanger improve ventilation etc Turn on the unit again after the power voltage is resumed Charge refrigerant according to service manual Whether the outdoor fan can operate normall...

Страница 54: ...function diagnosis process Start the troubleshooting for temperature sensor Check the connection between temperature sensor and wiring terminal is loose or in poor connection Check whether the tempera...

Страница 55: ...der ambient temperature Whether the resistance 1K Whether wire connection wire electronic expansion valve is in good condition Check the coil of electronic expansion valve If it s damaged please repla...

Страница 56: ...for 1 min There is malfunction for the detection circuit on main board of outdoor unit Check the input power and resume the power supply normal Is malfunction eliinated Measure the voltage at both en...

Страница 57: ...an terminal is connected well Whether the fan is damaged Replace fan capacitor unavailable for DC fan Replace outdoor fan Whether outdoor ambient temperature is more than 53o C Whether radiation insid...

Страница 58: ...mpressor wires are connected correctly Whether there re above circumstances Connect compressor wires according to correct wiring method Modify it according to Service Manual and then energize and turn...

Страница 59: ...on of PFC Protection HC Main check point Whether power supply is normal Malfunction diagnosis process Start Check whether power supply is normal Is power abnormal Replace main board of outdoor unit En...

Страница 60: ...of outdoor unit is damaged Malfunction diagnosis process Communication malfunction De energize the unit and then check whether connection wires between indoor unit and outdoor unit and wiring inside...

Страница 61: ...stop time for compressor is more than 3min Whether compressor wires are connected correctly The stop time for unit is not enough high pressure and low pressure of system are unbalanced please wait fo...

Страница 62: ...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...

Страница 63: ...tection circuit malfunctions of phase current of compressor U1 Hardware of main board is damaged Please replace main board 4 DC busbar voltage is too high PH Input voltage is too high or unstable Hard...

Страница 64: ...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 65: ...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 66: ...Installation and Maintenance Service Manual The component picture is only for reference please refer to the actual product 10 Exploded View and Parts List 10 1 Indoor Unit LI009HI 160T432 LI012HI 160T...

Страница 67: ...r Assy 01002000044 0100297601 1 12 Wall Mounting Frame 01252043 01252484 1 13 Cross Flow Fan 10352059 10352056 1 14 Fan Motor 150120874 1501214603 1 15 Connecting pipe clamp 2611216401 2611216401 1 16...

Страница 68: ...65 Installation and Maintenance Service Manual LI018HI 160T432 LI024HI 160T432 The component picture is only for reference please refer to the actual product...

Страница 69: ...Generator 1114001602 1114001602 1 16 Wall Mounting Frame 01362026 01252229 1 17 Motor Press Plate 26112511 26112515 1 18 Fan Motor 1501214502 15012145 1 19 Connecting Pipe Clamp 2611218801 26112514 1...

Страница 70: ...67 Installation and Maintenance Service Manual The component picture is only for reference please refer to the actual product 10 2 Outdoor Unit LI009HO 160T432 LI012HO 160T432...

Страница 71: ...1308506 1 12 Top Cover Sub Assy 01253073 01253073 1 13 Motor Support 01703104 0170310401 1 14 Condenser Assy 01100200141 01100200142 1 15 Rear Grill 01473009 01473009 1 16 Electric Expand Valve Fittin...

Страница 72: ...69 Installation and Maintenance Service Manual The component picture is only for reference please refer to the actual product LI018HO 160T432 LI024HO 160T432...

Страница 73: ...509402P 0130509001P 1 13 Valve cover 22245002 22245002 1 14 Handle 26233053 26233053 1 15 Wiring Clamp 26115004 1 16 Rear Grill 01473043 01475020 1 17 Condenser Assy 01100200126 01103000090 1 18 React...

Страница 74: ...n of step motor Procedure Step 1 Remove filter assembly 2 Remove horizontal louver Front panel Front case Right filter Groove Left filter Open the front panel Push the left filter and right filter unt...

Страница 75: ...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...

Страница 76: ...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...

Страница 77: ...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 Procedu...

Страница 78: ...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...

Страница 79: ...ght filters one by one Push out the axile bush on horizontal louver Bend the horizontal louver with hand and then separate the horizontal louver from the crank shaft of step motor to remove it Separat...

Страница 80: ...ervice Manual Loosen the connection clasps between front case sub assy and bottom case Lift up the front case sub assy and take it out S wing motor Screw off the screws that are locking the swing moto...

Страница 81: ...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...

Страница 82: ...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...

Страница 83: ...80 Installation and Maintenance Service Manual...

Страница 84: ...big handle slide out the big handle upwards to make the clasp of big handle separate from the groove of right side plate and then remove the big handle Remove the screws fixing top panel and then rem...

Страница 85: ...p Screws Screws Screws Screws Screw off the screws that are locking the front cover Then take it off Front cover 4 Remove the front cover 5 Remove axial flow blade Remove the nut fixing axial flow bla...

Страница 86: ...Screws 1 Screws 2 Remove the screws 1 fixing protective grille and then remove the protective grille Remove the screws fixing electric box assy pull out each wiring terminal lift the electric box ass...

Страница 87: ...ay valve assy Note When unsoldering the spot weld wrap the 4 way valve with wet cloth completely to avoid damaging the valve due to high temperature Remove the screws fixing motor and then remove the...

Страница 88: ...xing the liquid valve then remove the liquid valve Screw off the screws that are locking the valve support Then remove it 11 Remove gas valve and liquid valve Liquid valve Gas valve Screws Screws Scre...

Страница 89: ...ove 3 foot nuts on compressor and then remove the compressor Note Protect the ports of discharge pipe and suction pipe to avoid foreign objects to enter it Remove one screw fixing the condenser then r...

Страница 90: ...the valve cover and right side plate and then remove the valve cover Remove the screws connecting the top cover with outer case right side plate and left side plate lift the top cover upwards to remo...

Страница 91: ...side plate and then remove the outer case Remove the 3 screws connecting the grille with right side plate and left side plate and then remove the rear guard grille Remove the screws connecting the ri...

Страница 92: ...grounding wire screw on the electric box assy and then remove the grounding wire See fig 1 a c b Disconnect the wiring terminals of reactor compressor high and low pressure switch compressor overload...

Страница 93: ...upwards to remove it d e f g Push the electric box cover in the direction of arrow to make the clasp at the right side separate from the groove then pull it in the opposite direction to make the clasp...

Страница 94: ...he 3 screws connecting the isolation plate and chassis and then remove the isolation plate Remove the 4 screws connecting the reactor and isolation plate and then remove the reactor reactor isolation...

Страница 95: ...e welding joint wrap the gas valve with a wet cloth completely to avoid damage to the valve caused by high temperature bolts liquid valve gas valve 9 Remove 4 way valve assy Remove the 2 screws connec...

Страница 96: ...12 Remove compressor Remove the 3 foot nuts fixing compressor and then lift the compressor upwards to remove the compressor and damping cushion Note Keep the ports of discharge pipe and suction pipe f...

Страница 97: ...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 6 17 86 87 86 30 41 42 41 5 64 65...

Страница 98: ...llowing 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 shaper and...

Страница 99: ...88 33 10 63 72 2 439 111 0 737 5 63 46 34 10 2 73 2 358 112 0 717 4 60 23 35 9 779 74 2 28 113 0 697 3 57 18 36 9 382 75 2 206 114 0 678 2 54 31 37 9 003 76 2 133 115 0 66 1 51 59 38 8 642 77 2 064 1...

Страница 100: ...983 5 84 61 34 13 59 73 3 144 112 0 956 4 80 31 35 13 04 74 3 04 113 0 93 3 76 24 36 12 51 75 2 94 114 0 904 2 72 41 37 12 76 2 844 115 0 88 1 68 79 38 11 52 77 2 752 116 0 856 0 65 37 39 11 06 78 2 6...

Страница 101: ...62 11 32 101 3 22 15 362 9 24 51 41 63 10 93 102 3 13 14 342 8 25 49 19 64 10 54 103 3 04 13 323 9 26 47 08 65 10 18 104 2 96 12 306 2 27 45 07 66 9 83 105 2 87 11 289 6 28 43 16 67 9 49 106 2 79 10 2...

Страница 102: ...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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