Related Manuals for Lennox LI012HI-210P432
Summary of Contents for Lennox LI012HI-210P432
- Page 1 Service Manual Models: LI012HI-210P432 / LI012HO-210P432 LI018HI-210P432 / LI018HO-210P432 LI024HI-210P432 / LI024HO-210P432 (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 Operation Characteristic Curve ................6 2.3 Cooling and Heating Data Sheet in Rated Frequency .........7 2.4 Noise Curve ........................8 3. - Page 3 Service Manual 8.6 Installation of Outdoor Unit ................34 8.7 Vacuum Pumping and Leak Detection ............35 8.8 Check after Installation and Test operation ..........35 9. Maintenance ......................36 9.1 Error Code List ......................36 9.2 Procedure of Troubleshooting ................42 9.3 Troubleshooting for Normal Malfunction ............54 10.
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Page 4: Part Ⅰ : Technical Information
Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit: LI012HI-210P432 LI018HI-210P432 LI024HI-210P432 Outdoor Unit: LI018HO-210P432 LI024HO-210P432 LI012HO-210P432 Remote Controller: YAA1FB Technical Information... -
Page 5: Specifications
Service Manual 2. Specifications 2.1 Specification Sheet LI012HI-210P432 Model LI012HO-210P432 18J12 Product Code 18J13 Rated Voltage 208/230 Power Supply Rated Frequency Phases Power Supply Mode Outdoor Cooling Capacity Btu/h 12000 Heating Capacity Btu/h 13000 Cooling Power Input 1089 Heating Power Input... - Page 6 Service Manual Model of Outdoor Unit LI012HO-210P432 Outdoor Unit Product Code 18J13 ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO., LTD Compressor Model QXF-A102zE190B Compressor Oil FW68DA Compressor Type Rotary Compressor L.R.A. Compressor RLA Compressor Power Input 1023 Overload Protector HPC115/95U1/KSD115ºC Throttling Method Electron expansion valve Operation temp ºF...
- Page 7 Service Manual LI024HI-210P432 LI018HI-210P432 Model LI024HO-210P432 LI018HO-210P432 18J30 18J22 Product Code 18J31 18J23 Rated Voltage 208/230 208/230 Power Supply Rated Frequency Phases Power Supply Mode Outdoor Outdoor Cooling Capacity Btu/h 22000 18000 Heating Capacity Btu/h 24000 18000 Cooling Power Input 1870 1700 Heating Power Input...
- Page 8 Service Manual Model of Outdoor Unit LI024HO-210P432/O LI018HO-210P432/O 18J31 18J23 Outdoor Unit Product Code ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO., LTD CO.,LTD Compressor Model QXFS-D25zX090H QXA-B141zF030A Compressor Oil FW68DA RB68EP Compressor Type Rotary Rotary Compressor L.R.A. 25.00 Compressor RLA 9.50 Compressor Power Input...
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Page 9: Operation Characteristic Curve
Service Manual 2.2 Operation Characteristic Curve 12K(AFD) Cooling Heating Cooling Heating Condition Condition Indoor:DB 68°F Indoor:DB81°F WB66°F Indoor air flow:Super High Indoor air flow: Super High Pipe length:24.6 ft Pipe length:24.6 ft 89.6 100.4 107.6 Outdoor temp(°F) Outdoor temp(°F) 09K/18/24K/12K(AFC) Conditions Conditions Indoor:DB80°F/WB66.9°F... -
Page 10: Cooling And Heating Data Sheet In Rated Frequency
Service Manual 2.3 Cooling and Heating Data Sheet in Rated Frequency Cooling: Pressure of gas pipe Inlet and outlet pipe Rated cooling Compressor connecting indoor temperature of heat Fan speed of Fan speed of condition(°F) (DB/WB) Model revolution and outdoor unit exchanger indoor unit outdoor unit... -
Page 11: Noise Curve
Service Manual 2.4 Noise Curve 12K(AFD) Indoor side noise Outdoor side noise Heating Cooling Compressor frequency(Hz) Super Middle Middle Super Middle High High High Indoor fan motor rotating speed 24K/18K/12K(AFC) Indoor side noise Outdoor side noise Heating Cooling Compressor frequency(Hz) Indoor fan motor rating speed Technical Information... -
Page 12: Outline Dimension Diagram
Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit Φ2 3/4 Φ2 3/4 Φ2 3/16 Φ2 3/16 1 3/8 1 3/8 Unit:inch Models 35 13/64 11 1/2 8 21/64 8 1/64 21 21/64 5 27/32 8 45/64 8 1/16 44 43/64 9 23/32 8 31/64 26 31/32... -
Page 13: Outdoor Unit
Service Manual 3.2 Outdoor Unit LI018HO-210P432 LI024HO-210P432 13 3/8 15 5/8 Unit: inch LI012HO-210P432 33 25/64 12 19/32 23 19/64 Unit:inch Technical Information... -
Page 14: Refrigerant System Diagram
Service Manual 4. Refrigerant System Diagram Outdoor unit Indoor unit Gas pipe side Valve 4-Way valve Di s charge Heat Accumlator Suction exchanger Compressor (evaporator) Heat exchanger Liquid pipe (condenser) side Valve Strainer Electron Capillary Strainer expansion valve COOLING HEATING Connection pipe specification: Liquid pipe:1/4"... -
Page 15: Electrical Part
Service Manual 5. Electrical Part 5.1 Wiring Diagram ●Instruction Symbol Symbol Color Symbol Symbol Color Symbol Name White Green 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. ●... - Page 16 Service Manual LI012HI-210P432 LI024HI-210P432 600007000575 Technical Information...
- Page 17 Service Manual ● Outdoor Unit LI012HO-210P432 60000706165501 LI024HO-210P432 LI018HO-210P432 600007061848 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 Indoor Unit Top view Name Interface of live wire Fuse Interface of neutral wire Interface of fan Auto button Up&down swing interface Interface of PG feedback Interface of dry contact 9 Interface of wifi Needle stand for tube temperature sensor Display interface... - Page 19 Service Manual Outdoor Unit Top view Name 1 Interface of compressor wire 2 Reactor wiring terminal 2 3 Reactor wiring terminal 1 4 Terminal of chassis electric heater 4-way valve terminal Grounding wire 7 Neutral wire 8 Communication wire 9 Live wire 10 Terminal of electronic expansion valve 11 Interface of temperature sensor 12 Overload interface of compressor...
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Page 20: Function And Control
Service Manual 6. Function and Control 6.1 Remote Controller Introduction Buttons on Remote Controller ON/OFF button - button + button MODE button H O U R ONOFF FAN button SWING button I FEEL button button SLEEP button TEMP button TIMER-ON but CLOCK button TIMER-OFF bu TURBO... - Page 21 Service Manual Press this button to turn on the unit. Press this button again to turn off the unit. 2. - Button Press this button to decrease set temperature. Holding it down above 2 seconds rapidly decreases set temperature. In AUTO mode, set temperature is not adjustable.
- Page 22 Service Manual When selecting " " by remote controller or no display, temperature indicator on indoor unit displays set temperature. When selecting " " by remote controller, temperature indicator on indoor unit displays indoor ambient temperature. When selecting " " by remote controller, temperature indicator on indoor unit displays outdoor ambient temperature. Outdoor ambient temperature display may can’t be selected for some models.When indoor unit receives "...
- Page 23 Service Manual If “H1” is displayed on the remote controller while it’s not operated by the professional person/after-sales person, it belongs to the misoperation. Please operate it as below to cancel it.Under the OFF status of remote controller, hold the “MODE” button and “X-FAN” buttons simultaneously for 5s to cancel “H1”...
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Page 24: Brief Description Of Modes And Functions
Service Manual 6.2 Brief Description of Modes and Functions 1. Temperature Parameters ◆ Indoor preset temperature (T preset ◆ Indoor ambient temperature (T amb. 2. Basic Functions Once energized, in no case should the compressor be restarted within less than 3 minutes. In the situation that memory function is avail- able, for the first energization, if the compressor is at stop before de-energization, the compressor will be started without a 3-minute lag;... - Page 25 Service Manual ◆ When compressor is running (not including each malfunction and protection): a.When outdoor ambient temperature≥20°C(68°F) and indoor fan speed is low or medium, the fan speed will turn to high; if indoor fan speed is high or super high, it will keep the same. b.When outdoor ambient temperature≤18°C(64.4°F), the fan speed will resume set fan speed.
- Page 26 Service Manual c.For heating and cooling unit, when 22°C(71.6°F)<Tindoor ambient<26°C(78.8°F) (for cooling only unit, 22°C(71.6°F)<Tindoor ambient<26°C)(78.8°F), it will keep the original running mode. If the unit is energized for the first time, it will run in fan mode. ② Protection a.
- Page 27 Service Manual 1. In cooling mode: 1.1 When the initial set temperature is16-23°C(60.8~73.4°F),the temperature will rise 1°C(1.8°F) by every hour after sleep function is set;the temperature will not change after rising 3°C(5.4°F) ;after running for 7hours,the temperature will decrease1°C(1.8°F) and it will not change after that.
- Page 28 Service Manual 1. Under heating mode: auto speed under heating or auto heating mode: a. When T ≤T +1°C(1.8°F), indoor fan will operate at high speed; amb. preset b. When T +1°C(1.8°F)<T <T +3°C(5.4°F), indoor fan will operate at medium speed; preset amb.
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Page 29: Part Ⅱ : Installation And Maintenance
Service Manual Part Ⅱ : Installation and Maintenance 7. Notes for Installation and Maintenance 10. If the power cord or connection wire is not long enough, Safety Precautions: please get the specialized power cord or connection wire from the manufacture or distributor. Prohibit prolong the wire Important! by yourself. - Page 30 Service Manual To ensure safety, please be mindful of the following precautions. ●When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances other than the specified refrigerant. Any presence of air or other foreign substance in the refrigerant circuit will cause system pressure rise or compressor rupture, resulting in injury.
- Page 31 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 32: Installation
Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall Space to the wall At least 5 7/8 inch At least 15cm At least 5 7/8 inch At least 15cm Space to the wall Space to the wall Drainage pipe Drainage pipe Installation and Maintenance... - Page 33 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 34: Installation Parts-Checking
Service Manual 8.4 Requirements for electric connection 8.2 Installation Parts-checking 1. Safety Precaution (1) Must follow the electric safety regulations when installing Name Name the unit. Indoor unit Sealing gum (2) According to the local safety regulations, use qualified Outdoor unit Wrapping tape power supply circuit and air switch. - Page 35 Service Manual and then check if the frame is firmly installed by Left Right pulling the frame. If the plastic expansion particle is loose, please drill another fixing hole nearby. 3. Install Wall-mounting Frame Cut off (1) Choose the position of piping hole according to the direction Fig.4 the hole of outlet pipe.
- Page 36 Service Manual 7. Connect Wire of Indoor Unit 8. Bind up Pipe (1) Open the panel, remove the screw on the wiring cover and (1) Bind up the connection pipe, power cord and drain hose then take down the cover.(As show in Fig.11) with the band.(As show in Fig.14) (2) Reserve a certain length of drain hose and power cord for installation when binding them.
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Page 37: Installation Of Outdoor Unit
Service Manual 8.6 Installation of Outdoor Unit Refer to the following table for wrench moment of force: Hex nut diameter(inch) Tightening torque(ft·Ibf) 1. Fix the Support of Outdoor Unit(Select it according to Φ1/4 11.10~14.75 the actual installation situation) Φ3/8 20.12~29.50 (1) Select installation location according to the house structure. -
Page 38: Vacuum Pumping And Leak Detection
Service Manual 2. Leakage Detection (1) With leakage detector: Note: Check if there is leakage with leakage detector. (1) The through-wall height of drain hose shouldn't be higher (2) With soap water: than the outlet pipe hole of indoor unit.(As show in Fig.25) If leakage detector is not available, please use soap water for (2) Slant the drain hose slightly downwards. -
Page 39: Maintenance
Service Manual 9. Maintenance 9.1 Error Code List Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator During cooling and drying Possible reasons: High operation, except indoor... - Page 40 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator When the outdoor unit receive signal of Gathering refrigerant Gathering ,the system will be forced to Nominal cooling mode...
- Page 41 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator Decrease Overload or temperature is too All loads operate normally, frequency high;...
- Page 42 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator Compressor intermediate Showing during middle cooling or frequence in middle heating test test state During cooling and drying...
- Page 43 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator During cooling and drying operation, compressor will stop Refer to the malfunction analysis System is while indoor fan will operate;...
- Page 44 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator Malfunction of During cooling and drying phase current operation, compressor will stop detection while indoor fan will operate;...
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Page 45: Procedure Of Troubleshooting
Service Manual 9.2 Procedure of Troubleshooting Indoor unit 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 46 Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 Start Turn the fan blades by hand under power-off condition Adjust the motor and blade Whether the fan blades assembly so that rotor can run can run smoothly? smoothly.
- Page 47 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 48 Service Manual 4. 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 49 Service Manual 5. Communication Malfunction E6 Start Cut off power supply. Check if connection line of IDU and ODU and the wire inside electric box are correctly connected. Connect the line Correct connection? according to Malfunction eliminated? wiring diagram. Main board matches Match correctly with display board? Main board of Malfunction eliminated?
- Page 50 Service Manual Outdoor Unit 1. Capacity charging malfunction (outdoor unit malfunction) (AP1 below means control board of outdoor unit) Main detection points: ● Detect if the voltage of L and N terminal of XT wiring board is between 210VAC-240VAC by alternating voltage meter; ●...
- Page 51 Service Manual IPM protection, phase current overcurrent (the control board as below indicates the control board of outdoor unit) H5/P5 Mainly detect: (1) Compressor COMP terminal (2) voltage of power supply (3) compressor (4) Refrigerant-charging volume (5) air outlet and air inlet of outdoor/indoor unit Troubleshooting: Turn on the unit after energization...
- Page 52 Service Manual 3. High temperature and overload protection (E8)(AP1 below means control board of outdoor unit) Main detection points: ● If the outdoor ambient temperature is in normal range; ● If the indoor and outdoor fan are running normally; ● If the radiating environment of indoor and outdoor unit is good. E8 is displayed Normal protection, please If the outdoor...
- Page 53 Service Manual 4. Start-up failure (LC) (AP1 below means control board of outdoor unit) Main detection points: ● If the compressor wiring is correct? ● If the stop time of compressor is sufficient? ● If the compressor is damaged? ● If the refrigerant charging amount is too much? Turn on the unit The stop time is not sufficient and If the stop time of compressor...
- Page 54 Service Manual 5. Overload and high discharge temperature malfunction Main detection points: ● If the electronic expansion valve is connected well? Is the electronic expansion valve damaged? ● If the refrigerant is leaked? ● The compressor overload protection terminal is not connected well with the mainboard? ●...
- Page 55 Service Manual H3 or E4 is displayed 30min after power off the unit If the overload protector SAT is well connected? Under ambient temperature, test the resistance of overload protector with ohmmeter; resistance value should be＜1000ohm Connect wire If the wiring terminal FA of electronic according to wiring expansion valve is well connected? diagram...
- Page 56 Service Manual 6. Communication malfunction (E6) Main detection points: ● Check if the connection wire and the built-in wiring of indoor and outdoor unit are connected well and without damage; ● If the communication circuit of indoor mainboard is damaged? If the communication circuit of outdoor mainboard (AP1) is damaged? Malfunction diagnosis process: If the unit operates normally before malfunction...
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Page 57: Troubleshooting For Normal Malfunction
Service Manual 9.3 Troubleshooting 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 58 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 59: Exploded View And Parts List
Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit LI018HI-210P432 The component picture is only for reference; please refer to the actual product. Installation and Maintenance... - Page 60 Service Manual Part Code Description LI018HI-210P432 18J22 Product Code Front Panel 200003060039 Display Board 300001060400 Filter Sub-Assy 1112208906 Front Case Assy 000002060052 Axile Bush 10542036 Air Louver1 10512732 Helicoid tongue 26112512 Left Axile Bush 10512037 Rear Case assy 22202571 Rubber Plug (Water Tray) 76712012 O-Gasket sub-assy of Bearing 76512051...
- Page 61 Service Manual LI012HI-210P432 The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
- Page 62 Service Manual Part Code Description LI012HI-210P432 18J12 Product Code Front Panel 200003060035T Display Board 300001060400 Filter Sub-Assy 1112246803 Screw Cover 242520179 Electric Box Cover Sub-Assy 0140206501 Front Case Assy 000002060044 Shield Cover of Electric Box Cover 01592150 Main Board 300002060800...
- Page 63 Service Manual LI024HI-210P432 The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
- Page 64 Service Manual Part Code Description LI024HI-210P432 18J30 Product Code Front Panel 200003060036T Filter Sub-Assy 1101200703 Screw Cover 2425201906 Left Side Plate 200085060008 Decorative Strip(Left) 230001060039D Front Case 20000200003005 Air Louver(Manual) 10512737 Helicoid Tongue 26112513 Left Axile Bush 10512037 Rear Case assy 22202570 Rubber Plug (Water Tray) 76712012...
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Page 65: Outdoor Unit
Service Manual 10.2 Outdoor Unit LI024HO-210P432 LI018HO-210P432 The component picture is only for reference; please refer to the actual product. Installation and Maintenance... - Page 66 Service Manual Part Code Description LI024HO-210P432 LI018HO-210P432 18J31 18J23 Product Code Front Grill 016004000006 016004000006 Cabinet 01433047P 01433047P Axial Flow Fan 10335008 01433047P Fan Motor 1501506402 1501506402 Chassis Sub-assy 017000060297P 02803270P Drainage hole Cap 06813401 06813401 Clapboard Assy 01233153 01233153 4-Way Valve Assy 030152060325 030152060322...
- Page 67 Service Manual LI012HO-210P432 The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
- Page 68 Service Manual Part Code Description LI012HO-210P432 Product Code 18J13 Front Grill 016004060007 Cabinet 01433033P Axial Flow Fan 10333011 Fan Motor 1501308511 Electrical Heater 7651000414 Chassis Sub-assy 017000060080P Drainage Connecter 26113009 Electrical Heater(Compressor) 7651000414 Compressor and Fittings 009001060066 Compressor Gasket 009012000027 Magnet Coil 4300040050 Valve Support...
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Page 69: Removal Procedure
Service Manual 11. Removal Procedure Caution: discharge the refrigerant completely before removal. 11.1 Removal Procedure of Indoor Unit Step Procedure 1. Remove filter Panel Open the panel. Loosen the clasp shown in the fig and then pull the left filter and right filer outwards to remove them. - Page 70 Service Manual Step Procedure Panel Display 3. Remove panel Screws Open the front panel; separate the panel rotation shaft from the groove fixing the front panel and then removes the front panel. Note: The display of some models is fixed on Front panel Panel rotation the panel;...
- Page 71 Service Manual Step Procedure Cold plasma generator 6. Remove electric box assy Screws Loosen the connection clasps between Cold plasma generator and electric box, and then remove the cold plasma Electric box generator. Step motor Clasps Indoor tube Grounding temperature sensor screw Electric box assy ①...
- Page 72 Service Manual Step Procedure 7. Remove evaporator assy Remove 3 screws fixing evaporator assy. Screws Connection pipe clamp At the back of the unit, Loosen the clasp,connection pipe clamp and then remove the connection pipe clamp. Clasp Groove Rear Case assy First remove the left side of evaporator from Clasp the groove of bottom shell and then remove...
- Page 73 Service Manual Step Procedure 8. Remove motor and cross flow blade Remove 3 screws fixing motor clamp and then remove the motor clamp. Motor clasp Screws Cross flow Remove the at the connection place of Motor cross flow blade and motor; lift the motor and cross flow blade upwards to remove them.
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Page 74: Removal Procedure Of Outdoor Unit
Service Manual 11.2 Removal Procedure of Outdoor Unit Warning: Be sure to wait for a minimum of 20 minutes after turning off all power supplies and discharge the refrigerant completely before removal. LI012HO-210P432 Steps Procedure Cable Cross Plate 2 1.Remove cable cross plate 2 and valve cover Remove 3 connection screw fixing small cable cross plate 2 and then remove the... - Page 75 Service Manual Steps Procedure 4.Remove front panel front panel Remove connection screws connecting the front panel with the chassis and the motor support, and then remove the front panel. 5.Remove right side plate Remove connection screws connecting the right side plate right side plate with the valve support and the electric box.
- Page 76 Service Manual Steps Procedure 7.Remove motor and motor support motor support tor Pull out the lead-out wire and remove themotor. Remove the 2 tapping screws re-move it. motor 8.Remove electric box assy electric box assy Remove the 2 screws fixing the cover of elec-tric box.
- Page 77 Service Manual Steps Procedure 10.Remove 4-way valve assy 4-way valve assy Unscrew the fastening nut of the 4-way Valve Assy coil and remove the coil. Wrap the 4-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 and...
- Page 78 Service Manual LI018HO-210P432 LI024HO-210P432 Steps Procedure 1. Remove big handle,valve cover and top cover big handle Remove the screw connecting the big handle and right side plate, and then remove the big handle. Remove the screw connecting the valve cover and right side plate, and then remove the valve cover.
- Page 79 Service Manual Steps Procedure Remove the screws connecting the outer case with motor support, isolation plate and chassis; lift the outer case upwards; loosen the clasps of outer case with right side plate and left side plate, and then remove the outer case. outer case 3.
- Page 80 Service Manual Steps Procedure 4. Remove axial flow blade Remove the nut fixing axial flow blade and then remove the blade. axial flow fan motor support Remove the 6 screws fixing the motor and then remove the motor. Remove the 2 screws connecting the motor support and chassis, and then loosen the stopper to remove the motor support.
- Page 81 Service Manual Procedure Steps 6. Removal of sound-proof sponge Tear sound-proof sponge with caution. Sound-proof sponge 7. Removal of isolation sheet Remove screws fixing isolation sheet and then remove the sheet. Isolation sheet 8. Removal of valve Unsolder gas and liquid valves and then remove the screws fixing valve supports.
- Page 82 Service Manual Procedure Steps 9. Removal of 4-way valve 10. Removal of compressor Compressor Washer 11. Removal of motor support and motor Remove screws fixing motor support and then remove the support. Remove screws fixing motor and then remove the motor. Motor Motor support Installation and Maintenance...
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Page 83: 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 84: 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 85: 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( ) Resistance(k ) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( Resistance(k ) 138.1 18.75 3.848 1.071 128.6 17.93 3.711... - Page 86 Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( Resistance(k ) 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...
- Page 87 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor(50K) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( Resistance(k ) 853.5 18.34 4.754 799.8 93.42 17.65 4.609 89.07 16.99 4.469 703.8 84.95 16.36 4.334 660.8 81.05 15.75 4.204...
- Page 88 JF00304256 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.