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Lennox LM012CI-100V232-1X Service Manual Download Page 2

Service Manual

Table of Contents

Part 

Ⅰ

: Technical Information

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

1. Summary

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

2. Specifications

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

2.1 Specification Sheet

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

2.2 Capacity Curve in Different Outdoor Temperature ...........................................................4

2.3 Cooling  Data Sheet in Rated Frequency

 .........................................................................4

3. Outline Dimension Diagram

 ........................................................................5

3.1 Indoor Unit ........................................................................................................................5
3.2 Outdoor Unit .....................................................................................................................6

4. Refrigerant System Diagram

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

5. Electrical Part

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

5.1 Wiring Diagram .................................................................................................................8
5.2 PCB Printed Diagram .....................................................................................................11

6. Function and Control

 ......................................................................................12

6.1 Remote Controller Introduction ......................................................................................12

6.3 Brief Description of Modes and Functions

 ......................................................................16

Part 

Ⅱ

: Installation and Maintenance 

 .................................................21

7. Notes for Installation and Maintenance

 ..........................................21

8. Installation

 ................................................................................................................23

8.1 Installation Dimension Diagram ......................................................................................23

8.2 Installation Parts-checking 

 ............................................................................................25

8.3 Selection of Installation Location ....................................................................................25

8.4 Electric Connection Requirement

 ...................................................................................25

8.5 Installation of Indoor Unit ................................................................................................25
8.6 Installation of Outdoor Unit .............................................................................................28

8.7 Vacuum Pumping and Leak Detection

 ...........................................................................29

8.8 Check after Installation and Test Operation

 ...................................................................29

9. Maintenance

 ............................................................................................................30

9.1 Error Code ......................................................................................................................30

9.2 Procedure of Troubleshooting

 ........................................................................................31

9.3 Maintenance Method for Normal Malfunction

 .................................................................36

Table of Contents

Summary of Contents for LM012CI-100V232-1X

Page 1: ...Thank you for selecting LENNOX air conditioners Service Manual Models LM012CI 100V232 1X LM012CO 100V232 1X LM012HI 100V232 1X LM012HO 100V232 1X Refrigerant R22...

Page 2: ...roller Introduction 12 6 3 Brief Description of Modes and Functions 16 Part Installation and Maintenance 21 7 Notes for Installation and Maintenance 21 8 Installation 23 8 1 Installation Dimension Dia...

Page 3: ...44 11 1 Removal Procedure of Indoor Unit 44 11 2 Removal Procedure of Outdoor Unit 49 Appendix 53 Appendix 1 Reference Sheet of Celsius and Fahrenheit 53 Appendix 2 Configuration of Connection Pipe 5...

Page 4: ...Y6185 1 Technical Information Service Manual 1 Summary Indoor Unit LM012CI 100V232 1X LM012HI 100V232 1X Part Technical Information Outdoor Unit LM012CO 100V232 1X Remote Controller LM012HO 100V232 1X...

Page 5: ...100V232 1X LM012HI 100V232 1X Indoor Unit Product Code Y6687 Y6697 Fan Type Cross flow Cross flow Diameter Length DXL mm 98X580 98X580 Fan Motor Cooling Speed SH H M L SL r min 1450 1200 1050 800 145...

Page 6: ...LA A 0 34 0 53 Fan Motor Capacitor F 7 7 Air Flow Volume of Outdoor Unit m3 h 1600 1800 Fan Type Axial flow Axial flow Fan Diameter mm 394 5 400 Defrosting Method Automatic Defrosting Climate Type T1...

Page 7: ...utlet pipe temperature of condenser P Pressure at the side of big valve Connection pipe length 5 m Rated cooling condition C DB WB Model Pressure of gas pipe connecting indoor and outdoor unit Inlet a...

Page 8: ...5 Technical Information Service Manual H D W 78 88 35 103 462 148 55 55 35 90 150 54 168 5 462 159 5 55 55 54 3 Outline Dimension Diagram 3 1 Indoor Unit Unit mm Models W H D All models 790 275 200...

Page 9: ...6 Technical Information Service Manual 714 776 510 286 257 320 540 3 2 Outdoor Unit Unit mm LM012HO 100V232 1X LM012CO 100V232 1X Unit mm 714 257 540 286 320 776 510...

Page 10: ...or unit COOLING HEATING Accumlator 4 Way valve Discharge Suction Discharge Suction Heat exchanger evaporator Heat exchanger evaporator Heat exchanger condenser Heat exchanger condenser Valve Valve Val...

Page 11: ...ck Note Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model LM012CI 100V232 1X OUTDOOR UNIT AP2 COMP AC L 2 N 1 N1 TC CAP JUMP TR OUT TR IN SWING UD M2 STE...

Page 12: ...03 6 1625 7 6 1625 6 1625 57 57 6 1 8 0 67 33 1 02725 75 16 250 5 75 1 75 287 7 63 5 9 5 1 63 2 5 1 02725 63 63 3 3 803 3 2 1 203 1 7 50 1 2 11 7 1 2 97 8 7 8 97 2 9 325 725 3 1 1 57 3 7 3 1 1 1 8 32...

Page 13: ...10 Technical Information Service Manual These wiring diagrams are subject to change without notice please refer to the one supplied with the unit LM012HO 100V232 1X...

Page 14: ...3 Neutral wire interface of power cord 4 Neutral wire interface of cold plasma 5 Interface of PG motor 6 Interface of outdoor motor 7 Interface of 4 way valve 8 Live wire interface of cold plasma 9 I...

Page 15: ...putting through the power the air conditioner will give out a sound Operation indictor is ON red indicator After that you can operate the air conditioner by using remote controller Under on status pr...

Page 16: ...13 Technical Information Service Manual AUTO COOL DRY FAN HEAT OFF...

Page 17: ...14 Technical Information Service Manual battery Cover of battery box remove reinstall...

Page 18: ...15 Technical Information Service Manual...

Page 19: ...to indoor ambient temperature There swill be 30s delayed for protection between mode switchover When Tamb 26 unit will be in cooling mode Ex factory set temperature is 25 Cooling and heating unit Whe...

Page 20: ...of IDU fan motor will be eliminated For some models they can only be restated up after re energized Please refer to maintenance part for display information and disposal method for details 3 Drying mo...

Page 21: ...unit or during mode switchover the 4 way valve is closed In order to decrease noise the 4 way valve will delay 2mins to be closed Overcurrent protection this protection function is not available for...

Page 22: ...operates Press this button again to turn off the unit 3 Sleep function In this mode the system will select proper sleep curve to operate according to different set temperature If start up sleep funct...

Page 23: ...mperature set fan speed general timer Fahrenheit Celsius General timer can be memorized Time of timer is calculated again from energization Clock timer can t be memorized 4 Special Function 1 Health f...

Page 24: ...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...

Page 25: ...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 26: ...t least 15cm At least 50cm At least 50cm At least 30cm At least 300cm At least 200cm Space to the obstruction Space to the obstruction Space to the obstruction Space to the ceiling Space to the obstru...

Page 27: ...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 28: ...s 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 may cause electric sh...

Page 29: ...g 2 Note Insulating 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 Refe...

Page 30: ...l wire to the wiring terminal according to the color tighten the screw and then fix them with wire clip As show in Fig 13 Note Fig 11 Fig 12 Fig 13 Fig 14 Fig 15 Wiring cover Screw Panel Do not bend t...

Page 31: ...the handle As show in Fig 21 2 Remove the screw cap of valve and aim the 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 torq...

Page 32: ...r completely and operate for 10 15min to check if the pressure of piezometer remains in 0 1MPa 4 Close the vacuum pump and maintain this status for 1 2min to check if the pressure of piezometer remain...

Page 33: ...ensor is damaged Please check it by referring to the resistance table for temperature sensor 4 Main board is broken 3 Blocked protection of IDU fan motor H6 IDU fan ODU fan compressor and electric hea...

Page 34: ...oken 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 Yes Yes...

Page 35: ...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 36: ...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 37: ...ambient temperature is higher than 53 C If the airflow of indoor and outdoor unit is good If the indoor and outdoor fan are running normally Replace outdoor mainboard Connect normally Adjust the conn...

Page 38: ...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 39: ...for details Malfunction of compressor Compressor can t operate Refer to point 5 of maintenance method for details 9 3 Maintenance Method for Normal Malfunction 1 Air Conditioner Can t be Started Up 2...

Page 40: ...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 41: ...38 Installation and Maintenance Service Manual 10 Exploded View and Parts List 10 1 Indoor Unit...

Page 42: ...1252043 1 14 Cross Flow Fan 10352059 10352059 1 15 Fan Motor 1501208902 1501208902 1 16 Connecting pipe clamp 2611216401 2611216401 1 17 Rubber Plug Water Tray 76712012 76712012 1 18 Stepping Motor 15...

Page 43: ...40 Installation and Maintenance Service Manual LM012CO 100V232 1X 10 2 Outdoor Unit...

Page 44: ...3000600452 1 9 Valve 07100024 1 10 Valve 07100147 1 11 Big Handle 262334332 1 12 Valve Support 0170308901P 1 13 Right Side Plate 0130317201P 1 14 Electric Box Assy 10000202295 1 15 Terminal Board 4201...

Page 45: ...42 Installation and Maintenance Service Manual LM012HO 100V232 1X...

Page 46: ...assy 03000600446 1 11 Valve 07100147 1 12 Valve 07100024 1 13 Big Handle 2623343106 1 14 Valve Support 01703089P 1 15 Right Side Plate Sub Assy 01303178 1 16 Electric Box Assy 10000202242 1 17 Termina...

Page 47: ...ith hand and then separate the horizontal louver from the crankshaft of step motor to remove it Horizontal louver Location of step motor Procedure Step 2 Remove horizontal louver Front panel Front cas...

Page 48: ...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 49: ...ead wire and rotate the electric box assy Twist off the screws that are locking the wire clip Loosen the power cord and remove its wiring terminal Lift up the main board and take it of Remove the disp...

Page 50: ...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...

Page 51: ...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 52: ...ting unit for example 1 Before disassembly 2 Remove big handle Remove the connection screw fixing the big handle and then remove the handle 3 Remove top panel Remove connection screws connecting the t...

Page 53: ...el with the chassis and the motor support and then remove the front panel Remove connection screws connecting the right side plate with the chassis the valve support and the electric box Then remove t...

Page 54: ...ft the motor support to remove it 9 Remove electric box Remove screws fixing the electric box subassembly loosen the wire bundle and unplug the wiring terminals Then lift the electric box to remove it...

Page 55: ...welding slag during unsoldering Remove the 2 screws fixing the gas valve and unsolder the welding point between the gas valve and the air return pipe to remove the gas valve NOTE Discharge the refrig...

Page 56: ...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...

Page 57: ...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...

Page 58: ...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...

Page 59: ...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...

Page 60: ...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...

Page 61: ...t 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 owned J...

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