Table of Contents
Related Manuals for Lennox LM009CI-100T432-1
Summary of Contents for Lennox LM009CI-100T432-1
- Page 1 Service Manual Models: LM009CI-100T432-1 / LM009CO-100T432-1 LM012CI-100T432-1 / LM012CO-100T432-1 LM018CI-100T432-1 / LM018CO-100T432-1 LM024CI-100T432-1 / LM024CO-100T432-1 (Refrigerant R410A) Thank you for selecting LENNOX air conditioners.
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Page 2: Table Of Contents
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 ............6 2.3 Cooling and Heating Data Sheet in Rated Frequency .............6 3. Outline Dimension Diagram ................7 3.1 Indoor Unit ........................7 3.2 Outdoor Unit ........................8... - Page 3 Service Manual 10. Exploded View and Parts List ..............44 10.1 Indoor Unit ........................44 10.2 Outdoor Unit .........................50 11. Removal Procedure ..................58 11.1 Removal Procedure of Indoor Unit ................58 11.2 Removal Procedure of Outdoor Unit ................68 Appendix: ........................86 Appendix 1: Reference Sheet of Celsius and Fahrenheit ............86 Appendix 2: Configuration of Connection Pipe ..............86 Appendix 3: Pipe Expanding Method ...................87 Appendix 4: List of Resistance for Temperature Sensor ............88...
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Page 4: Part Ⅰ : Technical Information
Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit: LM009CI-100T432-1 LM012CI-100T432-1 LM018CI-100T432-1 LM024CI-100T432-1 Outdoor Unit: LM009CO-100T432-1 LM012CO-100T432-1 LM018CO-100T432-1 LM024CO-100T432-1 Remote Controller: YV1FB7 Technical Information... -
Page 5: Specifications
Service Manual 2. Specifications 2.1 Specification Sheet LM009CI-100T432-1 LM012CI-100T432-1 Model LM009CO-100T432-1 LM012CO-100T432-1 Product Code Y6760 Y6761 Y6762 Y6763 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Indoor Cooling Capacity Btu/h 9000 12000 Heating Capacity Btu/h... - Page 6 Service Manual Model of Outdoor Unit LM009CO-100T432-1 LM012CO-100T432-1 Outdoor Unit Product Code Y6761 Y6763 ZHUHAI LANDA ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark COMPRESSOR CO. LTD. CO.,LTD. Compressor Model QXA-B098E050 QXA-C122E030 Compressor Oil RB68EP,FCV68D RB68EP/FVC68D Compressor Type Rotary Rotary L.R.A. 18.5 Compressor RLA Compressor Power Input 1010 Overload Protector...
- Page 7 Service Manual LM018CI-100T432-1 LM024CI-100T432-1 Model LM018CO-100T432-1 LM024CO-100T432-1 Product Code Y6764 Y6765 Y6766 Y6767 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Indoor Cooling Capacity Btu/h 18000 24000 Heating Capacity Btu/h Cooling Power Input 1675 2164 Heating Power Input Cooling Power Current 7.28...
- Page 8 Service Manual Model of Outdoor Unit LM018CO-100T432-1 LM024CO-100T432-1 Outdoor Unit Product Code Y6765 Y6767 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO., LTD. CO.,LTD. Compressor Model QXA-F19F050 QXA-F24F050 Compressor Oil ATMOS-RB68EP RB68EP Compressor Type Rotary Rotary L.R.A. 45.00 Compressor RLA 7.25 8.90 Compressor Power Input...
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Page 9: Capacity Curve In Different Outdoor Temperature
Fan speed of (DB/WB) temperature of heat exchanger Model of outdoor outdoor unit indoor unit unit Indoor Outdoor P (MPa) T1 (°C) T2 (°C) LM009CI-100T432-1 in:10~14 in:72~83 27/19 35/24 0.9~1.1 Super High High LM009CO-100T432-1 out:11~14 out:35~40 LM012CI-100T432-1 in:10~14 in:69~74... -
Page 10: Outline Dimension Diagram
Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 168.5 159.5 LM009CI-100T432-1 Φ55 Φ55 LM012CI-100T432-1 Ф55 Ф55 LM018CI-100T432-1 Ф55 Ф55 LM024CI-100T432-1 Unit:mm Ф70 Ф70 Model LM009CI-100T432-1 LM012CI-100T432-1 1LM018CI-100T432-1 1LM024CI-100T432-1 1078 Technical Information... -
Page 11: Outdoor Unit
Service Manual 3.2 Outdoor Unit LM009CO-100T432-1 Unit:mm LM012CO-100T432-1 Unit:mm Technical Information... - Page 12 Service Manual LM018CO-100T432-1 Unit:mm LM024CO-100T432-1 Unit:mm Technical Information...
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Page 13: Refrigerant System Diagram
Valve Capillary Strainer COOLING Connection pipe specification: Liquid pipe:1/4" (6mm) Gas pipe:3/8" (9.52mm)(LM009CI-100T432-1 LM009CO-100T432-1) Indoor unit Outdoor unit Gas pipe:1/2" (12mm)(all models except LM009CI-100T432-1 LM009CO-100T432-1) Gas pipe side Valve 4-Way valve Di s charge Heat Suction Accumlator exchanger Compressor... -
Page 14: Electrical Part
Jumper cap Yellow Brown COMP Compressor Blue Grounding wire YEGN Yellow/Green Black Violet Orange Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model. ● Indoor Unit LM009CI-100T432-1 LM012CI-100T432-1 Technical Information... - Page 15 Service Manual LM018CI-100T432-1 LM024CO-100T432-1 63632448 Technical Information...
- Page 16 Service Manual ● Outdoor Unit LM009CO-100T432-1 LM012CO-100T432-1 C(U) YEGN YEGN COMP MOTOR S(X) MOTOR R(M,V) (BK) N(1) (BN) YEGN 63613294 LM018CO-100T432-1 FAN MOTOR COMP. YEGN YEGN YEGN (RD) (OG) (BU) 63613578 Technical Information...
- Page 17 Service Manual LM024CO-100T432-1 6361000001802 These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit. Technical Information...
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Page 18: Pcb Printed Diagram
Service Manual 5.2 PCB Printed Diagram Top view Interface of compressor Interface of live wire Interface of neutral wire Interface of neutral wire for cold plasma Interface of PG motor Interface of outdoor fan Interface of 4-way valve Interface of live wire of cold plasma Interface of up&down swing Feedback interface of PG... -
Page 19: Function And Control
Service Manual 6. Function and Control 6.1 Remote Controller Introduction ON/OFF button ▲ button MODE button SWING button button FAN button TIMER OFF button CLOCK button TIMER ON button SLEEP button TEMP button TURBO button X-FAN button I FEEL button button Introduction for icons on display screen Set fan speed... - Page 20 Service Manual HEAT AUTO COOL Technical Information...
- Page 21 Service Manual battery reinstall remove Cover of battery box Technical Information...
- Page 22 Service Manual Technical Information...
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Page 23: Brief Description Of Modes And Functions
Service Manual 6.2 Brief Description of Modes and Functions 1. Summary (1) Buzzer When the controller is energized or receives signal from button (emergency operation switch on air conditioner) or remote controller, the buzzer will give out a beep. (2) Display ◆... - Page 24 Service Manual ② Display: Operation icon, cooling icon, set temperature. ③ Protection function ◆ Freeze protection During operation, when controller detected that Ttube≤0°C for a consecutive period of time, the system enters into freeze protection. In that case, the compressor and the ODU fan stop operation, while the IDU operates at set fan speed. If freeze protection is released and the compressor has been out of operation for 3 mins, the unit will resume its previous operation status.
- Page 25 Service Manual (4) Fan mode ① Operation condition and process for fan mode In fan mode, the IDU fan motor operates at set speed, while the compressor and the ODU fan motor stop. Temperature setting range is 16~30°C. ② Display: Operation icon, set temperature. ③...
- Page 26 Service Manual ② If swing function is set when turning on the unit, the horizontal louver will swing between L and D. O(0°) Horizontal louver has 7 swing statuses: ◆ Stay at position L: control by remote controller: ◆ Stay at position A: control by remote controller: ◆...
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Page 27: Part Ⅱ : Installation And Maintenance
Service Manual Part Ⅱ : Installation and Maintenance 7. Notes for Installation and Maintenance Safety Precautions: 10. If the power cord or connection wire is not long enough, please get the specialized power cord or connection wire Important! from the manufacture or distributor. Prohibit prolong the wire by yourself. - Page 28 Service Manual Main Tools for Installation and Maintenance 1. Level meter, measuring tape 2. Screw driver 3. Impact drill, drill head, electric drill 4. Electroprobe 5. Universal meter 6. Torque wrench, open-end wrench, inner hexagon spanner 7. Electronic leakage detector 8.
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Page 29: Installation
Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall At least 15cm At least 15cm Space to the wall Drainage pipe Installation and Maintenance... - Page 30 Service Manual Installation procedures Start installation Preparation before installation Read the requirements select installation Prepare tools for electric connection location Select indoor unit Select outdoor unit installation location installation location Install the support of outdoor unit Install wall-mounting (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor Fix outdoor unit...
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Page 31: Installation Parts-Checking
Owner’s manual, conditioner. cable(power cord) remote controller Air-conditioner Air switch capacity Wall pipe LM009CI-100T432-1 LM009CO-100T432-1 Note: LM012CI-100T432-1 LM012CO-100T432-1 1. Please contact the local agent for installation. LM018CI-100T432-1 LM018CO-100T432-1 LM024CI-100T432-1 LM024CO-100T432-1 2. Don't use unqualified power cord. (4) Properly connect the live wire, neutral wire and grounding wire of power socket. - Page 32 Service Manual in the holes. 5. Connect the Pipe of Indoor Unit (3) Fix the wall-mounting frame on the wall with tapping screws (1) Aim the pipe joint at the corresponding bellmouth.(As show Wall Wall Level meter Mark in the middle of it (ST4.2X25TA) and then check if the frame is firmly installed by in Fig.5) Space...
- Page 33 Fig.15 and then fix the power connection wire with wire clip.(As show Indoor power cord in Fig.13) LM009CI-100T432-1 LM012CI-100T432-1 Note: LM024CI-100T432-1 LM018CI-100T432-1 (1) The power cord and control wire can't be crossed or...
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Page 34: Installation Of Outdoor Unit
Service Manual 8.6 Installation of Outdoor Unit Refer to the following table for wrench moment of force: 1. Fix the Support of Outdoor Unit(Select it according to Hex nut diameter(mm) Tightening torque(N m) the actual installation situation) Φ6 15~20 Φ9.52 30~40 (1) Select installation location according to the house structure. -
Page 35: Vacuum Pumping And Leak Detection
Service Manual 8.8 Check after Installation and Test (3) The water outlet can't be placed in water in order to drain smoothly.(As show in Fig.26) Operation 1. Check after Installation Check according to the following requirement after finishing installation. The drain hose can't be fluctuant Items to be checked Possible malfunction Has the unit been... -
Page 36: Maintenance
Service Manual 9. Maintenance 9.1 Error Code Display Method Malfunction Possible Causes(For specific maintenance method, please of Indoor Unit A/C Status Name refer to the following procedure of troubleshooting) (Error Code) The unit will stop operation 1. The wiring terminal between indoor ambient temperature as it reaches the temperature Indoor ambient sensor and main board is loosened or poorly contacted;... - Page 37 Service Manual Display Method Malfunction Possible Causes(For specific maintenance method, please of Indoor Unit A/C Status Name refer to the following procedure of troubleshooting) (Error Code) 1. Outdoor and indoor heat exchangers are too dirty or the air inlet/outlet is blocked. 2.
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Page 38: Procedure Of Troubleshooting
Service Manual 9.2 Procedure of Troubleshooting 1. Malfunction of Temperature Sensor F1, F2 Main detection points: ● Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? ● Is there short circuit due to trip-over of the parts? ●... - Page 39 Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 Main detection points: ● SmoothlyIs the control terminal of PG motor connected tightly? ● SmoothlyIs the feedback interface of PG motor connected tightly? ● The fan motor can't operate? ●...
- Page 40 Service Manual 3. Malfunction of Protection of Jumper Cap C5 Main detection points: ● Is there jumper cap on the mainboard? ● Is the jumper cap inserted correctly and tightly? ● The jumper is broken? ● The motor is broken? ●...
- Page 41 Service Manual 4. Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8 Main detection points: ● Instant energization afte de-energization while the capacitordischarges slowly? ● The zero-cross detectioncircuit of the mainboard is defined abnormal? Malfunction diagnosis process: Start Turn power off for 1minute,the turn...
- Page 42 Service Manual 5. Malfunction of Overcurrent Protection E5 Main detection points: ● Is the supply voltage unstable with big fluctuation? ● Is the supply voltage too low with overload? ● Hardware trouble? Malfunction diagnosis process: Start Normal fluctuation should be within 10 % Is malfunction Is the supply voltage unstable of the rated voltage on the nameplate...
- Page 43 Service Manual 6. High temperature and overload protection (AP1 below means control board of outdoor unit) E8 Main detection points: ● If the outdoor ambient temperature is in normal range; ● If the indoor and outdoor fan are running normally; ●...
- Page 44 Service Manual 7. Overload Protection Compressor H3 Main detection points: ● Heat exchange of unit is not good? (heat exchanger is dirty and unit radiating environment is bad) ● Fan motor is not working? ● Too much load of the system causes high temperature of compressor after working for a long time? ●...
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Page 45: Maintenance Method For Normal Malfunction
Service Manual 9.3 Maintenance Method for Normal Malfunction 1. Air Conditioner Can't be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether it's due to power failure. If yes, No power supply, or poor After energization, operation indicator isn’t bright wait for power recovery. - Page 46 Service Manual 4. ODU Fan Motor Can't Operate Possible causes Discriminating method (air conditioner status) Troubleshooting Connect wires according to wiring diagram to Wrong wire connection, or poor Check the wiring status according to circuit make sure all wiring terminals are connected connection diagram firmly...
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Page 47: Exploded View And Parts List
Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit LM009CI-100T432-1 LM012CI-100T432-1 Installation and Maintenance... - Page 48 Service Manual Part Code Description LM009CI-100T432-1(Cold Plasma) LM012CI-100T432-1(Cold Plasma) Product Code Y6760 Y6762 Front Panel 27230003811 20000300018 Display Board 30565260 30565260 Front Case Assy 00000200040 00000200045 Helicoid Tongue 26112508 26112436 Left Axile Bush 10512037 10512037 Rear Case assy 20162010 00000100093...
- Page 49 Service Manual LM018CI-100T432-1 Installation and Maintenance...
- Page 50 Service Manual Part Code Description LM018CI-100T432-1(Cold Plasma) Product Code Y6764 Remote Controller 30510112_L35921 Front Panel 27230003843 Display Board 30565260 Filter Sub-Assy 11122089 Decorative Board (Left) 20192662 Front Case 27230001983 Guide Louver 1051276501 Axile Bush 10542036 Air Louver 10512732 Helicoid tongue 26112512 Left Axile Bush 10512037...
- Page 51 Service Manual LM024CI-100T432-1 Installation and Maintenance...
- Page 52 Service Manual Part Code Description LM024CI-100T432-1(Cold Plasma) Product Code Y6766 Front Panel Assy 20000300016 Filter Sub-Assy 11012007 Screw Cover 2425245301 Front Case Assy 00000200043 Air Louver(Manual) 10512737 Helicoid Tongue 26112513 Left Axile Bush 10512037 Rear Case assy 22202570 Rubber Plug (Water Tray) 76712012 Ring of Bearing 26152025...
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Page 53: Outdoor Unit
Service Manual 10.2 Outdoor Unit LM009CO-100T432-1 Installation and Maintenance... - Page 54 Service Manual Part Code Description LM009CO-100T432-1 Product Code Y6761 Front grill 22413008 Front Panel 01533034P Chassis Sub-assy 01700000048P Compressor and fittings 00103978 Compressor Gasket 76710247 Inhalation Tube 03001000212 Discharge Tube 03500800465 Capillary Sub-Assy 03000600293 Valve 07100003 Valve 07100005 Big Handle 262334332 Valve Support 0170308901P...
- Page 55 Service Manual LM012CO-100T432-1 Installation and Maintenance...
- Page 56 Service Manual Part Code Description LM012CO-100T432-1 Product Code Y6763 Front Grill 22413008 Front Panel 0153303204P Chassis Sub-assy 0280330701P Compressor and Fittings 00101374 Compressor Gasket 76710247 Overload Protector 00183123 Inhalation Tube 03533924 Discharge Tube 03500800456 Capillary Sub-assy 03000600288 Valve 07100003 Valve 07100006 Big Handle 262334332...
- Page 57 Service Manual LM018CO-100T432-1 Installation and Maintenance...
- Page 58 Service Manual Part Code Description LM018CO-100T432-1 Product Code Y6765 Front Grill 22415001 Front Panel 01305015 Axial Flow Fan 10335261 Chassis Sub-assy 01203826P Clapboard Sub-Assy 01233035 Compressor Gasket 76711065 Compressor and Fittings 00103986 Valve Support Sub-Assy 01715006 Cut off Valve 071302392 Cut off Valve 07130239 Valve Cover...
- Page 59 Service Manual LM024CO-100T432-1 21 20 19 18 17 Installation and Maintenance...
- Page 60 Service Manual Part Code Description LM024CO-100T432-1 Product Code Y6767 Fan Motor 1501506102 Left Handle 26233053 Left Side Plate 01305093P Supporting Board(Condenser) 01795010 Motor Support Sub-Assy 01705020 Coping 01255005P Clapboard Sub-Assy 01235027 Condenser Assy 01100200331 Rear Grill 01473061 Capacitor CBB61 3301074705 Capacitor CBB65 3300008107 Electric Box Assy...
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Page 61: Removal Procedure
Service Manual 11. Removal Procedure Caution: discharge the refrigerant 11.1 Removal Procedure of Indoor Unit completely before removal. LM009CI-100T432-1 LM012CI-100T432-1 Step Procedure 1. Remove filter assembly Front panel Open the front panel. Push the left filter and right filter until they are separate from the groove on the front panel. - Page 62 Service Manual Steps Procedure 4. Remove electric box cover 2 Screw Electric box cover 2 Remove the screws on the electric box cover 2 to remove the electric box cover 2. 5. Remove front case sub-assy Screws Remove the screws fixing front case. Note: 1.Open the screw caps before removing the screws around the air outlet.
- Page 63 Service Manual Steps Procedure 7. Remove electric box assy Screw Loosen the connection clasps between shield cover of electric box sub-assy and Clasps electric box, and then remove the shield cover of electric box sub-assy. Remove the screw fixing electric box assy . Electric box Shield cover of electric box sub-assy...
- Page 64 Service Manual Steps Procedure Instruction: Some wiring terminal of this product is with lock catch and other devices. Circlip The pulling method is as below: Holder 1.Remove the soft sheath for some terminals at first, hold the circlip and then pull out the terminals.
- Page 65 Service Manual Steps Procedure 9. Remove motor and cross flow blade Remove the screws fixing motor clamp Screws and then remove the motor clamp. Motor clamp Cross flow Remove the screws at the connection Screw Motor place of cross flow blade and motor; lift Holder the motor and cross flow blade upwards sub-assy...
- Page 66 Service Manual LM018CI-100T432-1 LM024CI-100T432-1 1.Remove fifter assy Front panel Open the front panel. Push the left and rightfilters to make them break away from thegroove on the front case. Then remove the leftand right filters one by one. Left filter Front Right filter Groove...
- Page 67 Service 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 motor and take the motor off. Installation and Maintenance...
- Page 68 Service Manual Indoor tube temperature s ensor Cut off the wire binder and pull out the indoor tube temperature sensor. Screw off one grounding screw. Main Remove the wiring terminals of motor and board stepping motor. Remove the electric box assy. G rounding Screw off the screws that are locking each s c rew...
- Page 69 Service Manual G roove R ear case ass y 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 C lasp rear case assy. Installation and Maintenance...
- Page 70 Service Manual Installation and Maintenance...
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Page 71: Removal Procedure Of Outdoor Unit
Service Manual 11.2 Removal Procedure of Outdoor Unit LM009CO-100T432-1 Step Procedure 1. Before disassembly 2. Remove big handle Remove the connection screw fixing the big handle big handle and then remove the handle. 3. Remove top panel top panel Remove connection screws connecting the top panel with the front panel and the right side plate, and then remove the top panel. - Page 72 Service Manual Step Procedure 4. Remove front grille Remove connection screws between the front grille and the front panel. Then remove the front grille. front grille 5. Remove front panel Remove connection screws connecting the front panel with the chassis and the motor support, and then remove the front panel.
- Page 73 Service Manual Step Procedure 8. Remove motor and motor support motor support Remove the 4 tapping screws fixing the motor and disconnect the leading wire insert of the motor. Then remove the motor. Remove the 2 tapping screws fixing the motor support and lift the motor support to remove it.
- Page 74 Service Manual Step Procedure 12. Remove compressor Remove the 2 screws fixing the gas valve and unsolder the welding joint between the gas valve and the air-return pipe to remove the gas valve. (NOTE: Discharge the refrigerant completely before unsoldering; when unsoldering, wrap the gas valve with a wet cloth completely to avoid damage to the liquid valve...
- Page 75 Service Manual LM012CO-100T432-1 Steps Procedure 1.Before disassembly 2.Remove big handle big handle Remove the connection screw fixing the big handle and then remove the handle. 3. Remove top cover top cover Remove connection screws connecting the top cover plate with the front panel and the right side plate, and then remove the top panel.
- Page 76 Service Manual Steps Procedure 4.Remove grille Remove connection screws between the front grille and the front panel. Then remove the front grille. grille 5. Remove panel Remove connection screws connecting the front panel with the chassis and the motor support, and then remove the front panel. panel 6.
- Page 77 Service Manual Steps Procedure 8. Remove motor and motor support motor support Remove tapping screws fixing the motor and disconnect the leading wire insert of the motor. Then remove the motor. Remove tapping screws fixing the motor and motor lift the motor support to remove it. 9.Remove electric box assy electric box assy Remove screws fixing the electric box assy;...
- Page 78 Service Manual Steps Procedure 12. Remove compressor Remove the 2 screws fixing the gas valve and unsolder the welding joint between the gas valve and the air-return pipe to remove the gas valve. (NOTE: Discharge the refrigerant completely before unsoldering; when unsoldering, wrap the gas valve with a wet cloth completely to avoid damage to the liquid valve...
- Page 79 Service Manual LM018CO-100T432-1 Step Procedure 1. Remove handle Before disassembly Remove the screw fixing the handle and then handle remove the handle. valve cover 2. Remove top panel top panel Remove screws connecting the top panel with the front panel and the right side plate,and then remove the top panel.
- Page 80 Service Manual Step Procedure 3. Remove grille, front panel and rear guard grille grille Remove the screws connecting the grille and the front panel, and then remove the grille. rear guard grille panel Remove the screws fixing the rear guard grille and then remove the rear guard grille;...
- Page 81 Service Manual Step Procedure 5. Remove axial flow blade and motor Remove the nut on the blade with wrench and then axial flow blade remove the axial flow blade. Remove the tapping screws fixing the motor; motor support disconnect the leading wire insert of the motor, and then remove the motor.
- Page 82 Service Manual Step Procedure 7. Remove soundproof sponge Remove the soundproof sponge wrapping the compressor. soundproof sponge 8. Remove valves and pipeline discharge pipe suction pipe Remove the screws fixing the gas valve; unsolder the welding joint between the gas valve and the air-return pipe to remove the gas valve.
- Page 83 Service Manual Step Procedure 10. Remove isolation sheet and valve support Remove screws fixing the isolation sheet and then remove the isolation sheet. isolation sheet sub-assy Remove screws fixing valve support and then remove condenser the valve support; remove the screw fixing the condenser and then pull the condenser upwards to remove it.
- Page 84 Service Manual LM024CO-100T432-1 Step Procedure 1.Remove top panel Before disassembly top panel Remove the screws connecting the top panel with the front panel and the right side plate, and then remove the top panel. Remove the screws fixing the valve cover and then remove the valve cover.
- Page 85 Service Manual Step Procedure panel Remove the screws connecting the panel with the chassis and the motor support, and then remove the panel. 3.Remove right side plate and left side plate Remove the screws connecting the right side plate with the chassis, the valve support and the electric box, and then remove the right side plate.
- Page 86 Service Manual Step Procedure 4.Remove fan motor and motor support axial flow blade Remove the nut fixing the blade and then remove the axial flow blade. motor support Remove the 4 tapping screws fixing the motor; disconnect the leading wire insert of the motor and then remove the motor.
- Page 87 Service Manual Step Procedure discharge pipe 6.Remove suction pipe and discharge pipe Discharge the refrigerant completely; unsolder the pipes connecting the compressor and the condenser suction pipe assy, and then remove the suction pipe and the discharge pipe. (NOTE: Before unsoldering, please discharge the refrigerant completely.) 7.Remove compressor compressor...
- Page 88 Service Manual Step Procedure 9. Remove chassis sub-assy and condenser Remove the screws fixing the isolation sheet and then remove the isolation sheet. isolation sheet Remove screws connecting the support (condenser) and the condenser assy, and then remove the support (condenser). support condenser Dissemble the chassis sub-assy and the condenser...
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Page 89: Appendix
Service Manual Appendix: Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit Fahrenheit Fahrenheit display Fahrenheit display Fahrenheit display Fahrenheit Celsius （℃） Celsius （℃） Celsius （℃） temperature temperature temperature （℉）... -
Page 90: Appendix 3: Pipe Expanding Method
Service Manual Appendix 3: Pipe Expanding Method Pipe Note: Pipe cutter Improper pipe expanding is the main cause of refrigerant leakage.Please expand the pipe according to the following steps: Leaning Uneven Burr A:Cut the pip ● Confirm the pipe length according to the distance of indoor unit and outdoor unit. ●... -
Page 91: Appendix 4: List Of Resistance For Temperature Sensor
Service Manual Appendix 4: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) Temp( C) Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 138.1 18.75 3.848 1.071 128.6 17.93 3.711 1.039 121.6 17.14 3.579 1.009... - Page 92 Service Manual Resistance Table of Tube Temperature Sensors for Outdoor and Indoor(20K) Temp( C) Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 181.4 25.01 5.13 1.427 171.4 23.9 4.948 1.386 162.1 22.85 4.773 1.346 153.3 21.85 4.605 1.307 20.9 4.443 1.269 137.2 4.289...
- Page 93 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor(50K) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) 853.5 18.34 4.75 799.8 93.42 17.65 4.61 89.07 16.99 4.47 703.8 84.95 16.36 4.33 660.8 81.05 15.75 4.20 620.8 77.35 15.17 4.08 580.6...
- Page 94 JF00302624 Visit us 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.