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Summary of Contents for Lennox LI012CI-180P432
- Page 1 Service Manual Models: LI012CI-180P432 LI012CO-180P432 LI012HI-180P432 LI012HO-180P432 LI024CI-180P432 LI024CO-180P432 LI024HI-180P432 LI024HO-180P432 (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 Capacity Variation Ratio According to Temperature ............6 2.4 Cooling and Heating Data Sheet in Rated Frequency .............7 2.5 Noise Curve ........................7 3. - Page 3 Service Manual 9. Maintenance ......................42 9.1 Error Code List .......................42 9.2 Troubleshooting for Main Malfunction ................43 9.3 Troubleshooting for Normal Malfunction .................58 10. Exploded View and Parts List ..............60 10.1 Indoor Unit ........................60 10.2 Outdoor Unit .........................64 11. Removal Procedure ..................72 11.1 Removal Procedure of Indoor Unit ................72 11.2 Removal Procedure of Outdoor Unit ................82...
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Page 4: Part Ⅰ : Technical Information
Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit LI012CI-180P432 LI012HI-180P432 LI024CI-180P432 LI024HI-180P432 Outdoor Unit LI012CO-180P432 LI012HO-180P432 LI024CO-180P432 LI024HO-180P432 Remote Controller YAA1FB Technical Information... -
Page 5: Specifications
Service Manual 2. Specifications 2.1 Specification Sheet LI012CI-180P432 LI012HI-180P432 Model LI012CO-180P432 LI012HO-180P432 Product Code Y8369/Y8370 Y8381/Y8382 Rated Voltage 208/230 208/230 Rated Frequency Power Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity(Min~Max) Btu/h 12000(3753~12500) 12000(3753~12500) Heating Capacity(Min~Max) Btu/h 13000(3924~14000) Cooling Power Input(Min~Max) - Page 6 Service Manual Model of Outdoor Unit LI012CO-180P432 LI012HO-180P432 Outdoor Unit Product Code Y8370 Y8382 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO,LTD. CO,LTD. Compressor Model QXA-B102zE190 QXA-B102zE190 Compressor Oil RB68EP RB68EP Compressor Type Rotary Rotary Compressor Locked Rotor Amp (L.R.A) Compressor RLA Compressor Power Input 1020...
- Page 7 Service Manual LI024CI-180P432 LI024HI-180P432 Model LI024CO-180P432 LI024HO-180P432 Product Code Y8373/Y8374 Y8385/Y8386 Rated Voltage 208/230 208/230 Power Supply Rated Frequency Phases Power Supply Mode Outdoor Outdoor Cooling Capacity(Min~Max) Btu/h 22000(8630~23200) 22000(8630~23200) Heating Capacity(Min~Max) Btu/h 24000(8650~26000) Cooling Power Input(Min~Max) 2260(600~27000) 2260(600~27000) Heating Power Input(Min~Max) 2300(610~2750) Cooling Power Current 10.03...
- Page 8 Service Manual Model of Outdoor Unit LI024CO-180P432 LI024HO-180P432 Outdoor Unit Product Code Y8374 Y8386 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO.,LTD CO.,LTD Compressor Model QXA-B141zF030A QXA-B141zF030A Compressor Oil RB68EP RB68EP Compressor Type Rotary Rotary Compressor Locked Rotor Amp (L.R.A) Compressor RLA 11.29 12.18...
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Page 9: Operation Characteristic Curve
Service Manual 2.2 Operation Characteristic Curve Heating Cooling 220V 220V • Conditions Indoor : DB80˚F/WB66.9˚F Outdoor : DB95˚F Indoor air flow : High Pipe lengt : 24.6ft 230V 230V 240V • Conditions Indoor : DB70˚F/WB60˚F 240V Outdoor : DB19.94˚F/WB19.04˚F Indoor air flow : High Pipe lengt : 24.6ft Compressor frequency(Hz) Compressor frequency(Hz) -
Page 10: Cooling And Heating Data Sheet In Rated Frequency
T1: Inlet and outlet pipe temperature of evaporator T2: Inlet and outlet pipe temperature of condenser P: Pressure at the side of big valve Connection pipe length: 24.6ft. 2.5 Noise Curve LI012CI-180P432 LI012CO-180P432 LI012HI-180P432 LI012HO-180P432 Indoor side noise when blowing Outdoor side noise when blowing Heating... - Page 11 Service Manual LI024CI-180P432 LI024CO-180P432 LI024HI-180P432 LI024HO-180P432 Indoor side noise Outdoor side noise Heating Cooling Compressor frequency(Hz) Indoor fan motor rating speed Technical Information...
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Page 12: Outline Dimension Diagram
8 1/8 7 5/16 LI024CI-180P432 LI024CO-180P432 LI024HI-180P432 LI024HO-180P432 Φ2 3/4 Φ2 3/4 1 11/16 3 1/8 Unit:inch MODEL LI012CI-180P432 LI012CO-180P432 33 1/4 11 3/8 8 1/4 LI012HI-180P432 LI012HO-180P432 LI024CI-180P432 LI024CO-180P432 42 7/16 12 13/16 9 11/16 LI024HI-180P432 LI024HO-180P432 Technical Information... -
Page 13: Outdoor Unit
Service Manual 3.2 Outdoor Unit 10 1/8 12 5/8 30 9/16 Unit:inch LI024CO-180P432 LI024HO-180P432 13 3/8 15 5/8 Unit: inch Technical Information... -
Page 14: Refrigerant System Diagram
Service Manual 4. Refrigerant System Diagram LI012CI-180P432 LI012CO-180P432 Outdoor unit Indoor unit Gas pipe side Valve Di s charge Heat exchanger (evaporator) Suction Accumlator Heat Compressor exchanger (condenser) Liquid pipe side Valve Electron Strainer expansion valve COOLING LI012HI-180P432 LI012HO-180P432 Indoor unit... - Page 15 Service Manual LI024CI-180P432 LI024CO-180P432 Outdoor unit Indoor unit Gas pipe side Valve Di s charge Heat exchanger (evaporator) Suction Accumlator Heat Compressor exchanger (condenser) Liquid pipe side Valve Electron Strainer expansion valve COOLING LI024HI-180P432 LI024HO-180P432 Indoor unit Outdoor unit Gas pipe side Valve 4-Way valve...
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Page 16: 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 17 Service Manual ● Outdoor Unit LI012CO-180P432 60000700092101 LI012HO-180P432 600007000921 Technical Information...
- Page 18 Service Manual LI024CO-180P432 60000700023002 LI024HO-180P432 60000700078601 The above data is subject to change without notice. Please refer to the nameplate of the unit. Technical Information...
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Page 19: Pcb Printed Diagram
Service Manual 5.2 PCB Printed Diagram Indoor Unit ● Top view Name Interface of communication wire for indoor unit and outdoor unit 2 Interface of live wire Interface of health function neutral wire 4 Interface of neutral wire 5 Interface of fan 6 Interface of health function live wire 7 Jumper cap 8 Auto button... - Page 20 Service Manual Outdoor Unit LI012CO-180P432 LI012HO-180P432 ● Top view Compressor UVW three phase input interface Interface of reactor Interface of fan 4-way valve Interface of earthing wire Interface of live wire Interface of netural wire Interface of communication Interface of electronic expansion valve Overload interface of compressor...
- Page 21 Service Manual LI024CO-180P432 LI024HO-180P432 ● Top view Name Compressor three phase input interface Terminal of system high pressure protection Compressor overload protection terminal Interface of temperature sensor Terminal of electronic expansion valve Terminal for low pressure protection Interface of fan 4-way valve terminal 2-way valve terminal Terminal of compressor electric heater...
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Page 22: 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 23 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 24 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 25 Service Manual Replacement of Batteries in Remote Controller 1.Press the back side of remote controller marked with“ of battery box along the arrow direction. 2. Replace two 7# (AAA 1.5V) dry batteries, and make sure the position of “+” polar and “-“ polar are correct. 3.
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Page 26: Brief Description Of Modes And Functions
Service Manual 6.2 Brief Description of Modes and Functions Indoor Unit ● 1.Basic function of system (1)Cooling mode (1) Under this mode, fan and swing operates at setting status. Temperature setting range is 60.8~86.0 (2) During malfunction of outdoor unit or the unit is stopped because of protection, indoor unit keeps original operation status. (2)Drying mode (1) Under this mode, fan operates at low speed and swing operates at setting status. - Page 27 Service Manual (8)I feel control mode After controller received I feel control signal and ambient temperature sent by remote controller, controller will work according to the ambient temperature sent by remote controller. (9)Compulsory defrosting function (1) Start up compulsory defrosting function Under ON status, set heating mode with remote controller and adjust the temperature to 60.8 F.
- Page 28 Service Manual Outdoor Units 1. Input Parameter Compensation and Calibration (1) Check the ambient temperature compensation function Indoor ambient temperature compensation function. a. In cooling mode, the indoor ambient temperature participating in computing control = (T – ⊿ T indoor ambient temperature cooling indoor ambient temperature compensation b.
- Page 29 Service Manual 3. Special Functions Defrosting Control ① Conditions for starting defrosting After the time for defrosting is judged to be satisfied, if the temperature for defrosting is satisfied after detections for continuous 3minutes, the defrosting operation will start. ② Conditions of finishing defrosting The defrosting operation can exit when any of the conditions below is satisfied: ③...
- Page 30 Service Manual 1. Starting estimation: After the compressor stopped working for 180s, if T > [T (the temperature of hysteresis is 35.6ºF )], inner pipe frozen-preventing frequency-limited temperature the machine is only allowed to start for operating, otherwise it should not be started, and should be stopped to treat according to the frozen- preventing protection: Clear the trouble under the mode of power turn-off / heating, and the protection times are not counted.
- Page 31 Service Manual 1. Frequency limited If [T ]≤T <[T ] , you should limit the frequency raising of heating overload frequency-limited temperature inner pipe heating overload frequency reducing temperature at normal speed compressor. 2. Reducing frequency at normal speed and stopping machine: If T[ ]≤T <[T...
- Page 32 Service Manual (6)Voltage sag protection After start the compressor, if the time of DC link Voltage sag [U ] is measured to be less than t Voltage sag protection time , Sagging protection voltage the machine should be stop at once, hand on the voltage sag trouble, reboot automatically after 30 minutes. (7)Communication fault When you have not received any correct signal from the inner machine in three minutes, the machine will stop for communication fault.
- Page 33 Service Manual (12) Starting-up Failure Protection for Compressor Stop the compressor after its starting-up fails, restart it after 20s if the fault doesnt shows, and if they are all failing for the successive start 3 times, it shall be reported as Starting-up Failure, and then restart up it after 3 min. When it still not be able to operate through carry out the above process for 5 times, it is available if press ON/OFF.
- Page 34 Service Manual 6. Electric Heating Function of Chassis (1) When Toutdoor amb.≤32ºF , the electric heating of chassis will operate; (2) When Toutdoor amb.>35.6ºF , the electric heating of chassis will stop operation; (3)When 32ºF <Toutdoor amb.≤35.6ºF, the electric heating of chassis will keep original status. 7.
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Page 35: 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 36 Service Manual Safety Precautions for Installing and Relocating the Unit: To ensure safety, please be mindful of the following precautions. Warnings 1. When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances other than the specified refrigerant.
- Page 37 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 38: 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 5 7/8 inch Drainage pipe Installation and Maintenance... - Page 39 Service Manual 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 40: Installation Parts-Checking
(7) Dont install the indoor unit right above the electric Air-conditioner Air switch capacity appliance. LI012CI-180P432 LI012CO-180P432 (8) Please try your best to keep way from fluorescent lamp. LI012HI-180P432 LI012HO-180P432 LI024CI-180P432 LI024CO-180P432 3. Outdoor Unit: LI024HI-180P432 LI024HO-180P432 (1) Select a location where the noise and outflow air emitted by the outdoor unit will not affect neighborhood. - Page 41 Fig.6) lower than the wall-mounted frame.(As show in Fig.1) (4) Wrap the indoor pipe and joint of connection pipe with LI012CI-180P432 LI012CO-180P432 insulating pipe, and then wrap it with tape.(As show in Fig.7) LI012HI-180P432 LI012HO-180P432 Wall...
- Page 42 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 43: 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 22.12~29.50 (1) Select installation location according to the house structure. -
Page 44: Vacuum Pumping And Leak Detection
Service Manual Note: 8.8 Check after Installation and Test (1) The through-wall height of drain hose shouldnt be higher Operation than the outlet pipe hole of indoor unit.(As show in Fig.25) (2) Slant the drain hose slightly downwards. The drain hose 1. -
Page 45: Maintenance
Service Manual 9. Maintenance 9.1 Error Code List Display of lamp (the times of blinking) Display of Name of malfunction Indoor Outdoor indoor unit Anti-freezing protection Block or Low pressure of refrigerant system Compressor exhaust high temperature protection AC over-current protection Communication failure between indoor unit and outdoor unit Anti-high temperature protection No feedback of indoor fan motor... -
Page 46: Troubleshooting For Main Malfunction
Service Manual 9.2 Troubleshooting for Main Malfunction ●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 47 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 cant operate? ●...
- Page 48 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 49 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 50 Service Manual 5. Malfunction of detecting plate(WIFI) JF Start check if the connection wire are correctly connected detecting Replace the plate with the same model Is malfunction eliminated Replace the mainboard with the same model The end Installation and Maintenance...
- Page 51 Service Manual 6. Malfunction of Insufficient fluorine protection F0 （4） Troubleshooting for F0 malfunction Heat exchangers are Clean the heat exchangers and remove Malfunction is too dirty or the air inlet/outlet eliminated. blockage of air inlet/outlet. is blocked. Compressor doesn't work Malfunction is Make compressor run normally.
- Page 52 Service Manual ●Outdoor unit: (1) Capacitor charge fault (Fault with outdoor unit) (AP1 below refers to the outdoor control panel) Main Check Points: ●Use AC voltmeter to check if the voltage between terminal L and N on the wiring board is within 210VAC~240VAC. ●Is the reactor (L) correctly connected? Is the connection loose or fallen? Is the reactor (L) damaged? Fault diagnosis process: Turn on the unit...
- Page 53 Service Manual (2) IPM Protection, Out-of-step Fault, Compressor Phase Overcurrent (AP1 below refers to the outdoor control panel) Main check points: ●Is the connection between control panel AP1 and compressor COMP secure? Loose? Is the connection in correct order? ●Is the voltage input of the machine within normal range? (Use AC voltmeter to measure the voltage between terminal L and N on the wiring board XT) ●Is the compressor coil resistance normal? Is the insulation of compressor coil against the copper tube in good condition? ●Is the working load of the machine too high? Is the radiation good?
- Page 54 Service Manual Energize and switch on Use AC voltmeter If the voltage Check the supply to measure the IPM protection between terminal L voltage and voltage between occurs after the and N on wiring machine has run for terminal L and N restore it to board XT is within a period of time?
- Page 55 Service Manual (3) High temperature and overload protection diagnosis (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: ●Is outdoor ambient temperature in normal range? ●Are the outdoor and indoor fans operating normally? ●Is the heat dissipation environment inside and outside the unit good? Fault diagnosis process: Overheat and high temperature protection...
- Page 56 Service Manual (4) Start-up failure (following AP1 for outdoor unit control board) Mainly detect: ●Whether the compressor wiring is connected correct? ●Is compressor broken? ●Is time for compressor stopping enough? Fault diagnosis process: Power on the unit Restart it up after Is stop time of the compressor 3 minutes longer than 3 minutes?
- Page 57 Service Manual (5) Out of step diagnosis for the compressor (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: ●Is the system pressure too high? ●Is the input voltage too low? Fault diagnosis process: Out of step occurs in Out of step occurs once the operation unit is powered on.
- Page 58 Service Manual (6) Overload and air exhaust malfunction diagnosis (following AP1 for outdoor unit control board) Mainly detect: ●Is the PMV connected well or not? Is PMV damaged? ●Is refrigerant leaked? Fault diagnosis process: 20 minutes after the complete unit is powered off Is the terminal FA for the Connect the...
- Page 59 Service Manual (7) Power factor correct or (PFC) fault (a fault of outdoor unit) (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: ●Check if the reactor (L) of the outdoor unit and the PFC capacitor are broken Fault diagnosis process: Start Check wiring of the...
- Page 60 Service Manual (8) Communication malfunction: (following AP1 for outdoor unit control board) Mainly detect: ●Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged? ●Detect the indoor and outdoor units connection wire and indoor and outdoor units inside wiring is connect well or not, if is there any damage? Fault diagnosis process: Start...
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Page 61: Troubleshooting For Normal Malfunction
Service Manual 9.3 Troubleshooting for Normal Malfunction 1. Air Conditioner Cant be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether its due to power failure. If yes, No power supply, or poor After energization, operation indicator isnt bright wait for power recovery. - Page 62 Service Manual 4. ODU Fan Motor Cant 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 63: Exploded View And Parts List
Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit LI012CI-180P432 LI012HI-180P432 The component picture is only for reference; please refer to the actual product. Installation and Maintenance... - Page 64 Service Manual Part Code Description LI012CI-180P432 LI012HI-180P432 Product Code Y8369 Y8381 Front Panel 20000300018 20000300018 Filter Sub-Assy 11122468 11122468 Display Board 30565260 30565260 Front Case Assy 00000200045 00000200045 Guide Louver 1051293101 1051293101 Helicoid Tongue 26112436 26112436 Left Axile Bush 10512037...
- Page 65 Service Manual LI024CI-180P432 LI024HI-180P432 The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
- Page 66 Service Manual Part Code Description LI024CI-180P432 LI024HI-180P432 Product Code Y8373 Y8385 Front Panel 20000300016S 20000300016S Filter Sub-Assy 11012007 11012007 Screw Cover 2425245301 2425245301 Front Case 2002248603 2002248603 Air Louver(Manual) 10512737 10512737 Helicoid Tongue 26112513 26112513 Left Axile Bush 10512037 10512037 Display Board 30565260 30565260...
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Page 67: Outdoor Unit
Service Manual 10.2 Outdoor Unit LI012CO-180P432 The component picture is only for reference; please refer to the actual product. Installation and Maintenance... - Page 68 Service Manual Part Code Description LI012CO-180P432 Product Code Y8370 Front Grill 01473012 Front Panel Assy 0153304804 Axial Flow Fan 10333004 Fan Motor 1501308507 Chassis Sub-assy 01700000012601 Compressor Gasket 76710287 Compressor and fittings 009001000030 Valve Support 0171314201P Cut off Valve Assy 07133474 Valve Support Block 26113017...
- Page 69 Service Manual LI012HO-180P432 The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
- Page 70 Service Manual Part Code Description LI012HO-180P432 Product Code Y8382 Front Grill 01473012 Front Panel Assy 0153304804 Axial Flow Fan 10333004 Chassis Sub-assy 017000000126 Clapboard Sub-Assy 0123338502 Drainage Connecter 06123401 Compressor Gasket 76710287 4-Way Valve Assy 030152000094 Valve Support 0171314201P Cut off Valve Assy 07133474 Valve 07133082...
- Page 71 Service Manual LI024CO-180P432 The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
- Page 72 Service Manual Part Code Description LI024CO-180P432 Product Code Y8374 Front Grill 01473049 Cabinet 01433047P Axial Flow Fan 10335008 Fan Motor 1501506402 Chassis Sub-assy 01700000161P01 Clapboard Assy 01702100008 Compressor and Fittings 00105249G Inhalation Tube Sub-assy 030010000130 Discharge Tube Sub-assy 030013000417 Valve Support Assy 01705046 Cut off Valve Assy 07133844...
- Page 73 Service Manual LI024HO-180P432 The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
- Page 74 Service Manual Part Code Description LI024HO-180P432 Product Code Y8386 Front Grill 01473049 Cabinet 01433047P Axial Flow Fan 10335008 Fan Motor 1501506402 Chassis Sub-assy 01700000161P Drainage hole Cap 06813401 Clapboard Assy 01235081 4-Way Valve Assy 030152000073 Compressor and Fittings 00105249G Valve Support Assy 01705046 Cut off Valve 07133844...
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Page 75: Removal Procedure
11. Removal Procedure Warning: Be sure to wait for a minimum of 20 minutes after turning off all power supplies and discharge the refrigerant completely before removal. 11.1 Removal Procedure of Indoor Unit LI012CI-180P432 LI012HI-180P432 Step Procedure 1. Remove filter assembly Front panel Open the front panel. - Page 76 Service Manual Step Procedure 4. Remove detecting plate and electric box cover 2 Screw Electric box cover2 Remove the screw fixing detecting plate and then remove the detecting plate. Detecting plate Note:The position of detection board(WIFI) Screw may be different for -different models. for 09K Detecting plate Remove the screw fixing electric box...
- Page 77 Service Manual Step 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 78 Service Manual Step 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 79 Service Manual Step 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 80 Service Manual LI024CI-180P432 LI024HI-180P432 Front panel Open the front panel. Push the left and thegroove on the front case. Then remove Left filter Front Right filter Groove case 2.Remove horizontal louver 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.
- Page 81 Service Manual Step Procedure 4.Remove electric box cover 2 Remove the screws on the electric box cover 2 and detecting plate(WIFI), then remove the electric box cover 2 and detecting plate(WIFI). Electric box cover2 Screw Note: Detecting plate(WIFI) Electric box cover The position of detection board(WIFI) may be different for different models.
- Page 82 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 83 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 84 Service Manual Installation and Maintenance...
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Page 85: 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. LI012CO-180P432 LI012HO-180P432 NOTE: Take heat pump for example. Steps Procedure 1.Remove cable cross plate 2 and valve cover... - Page 86 Service Manual 3.Remove grille and front panel Remove connection screws between the front grille and the front panel. Then remove the front grille. Remove connection screws connecting the front panel with the chassis and the motor support, and then remove the front panel. Grille Panel 4.Remove axial flow blade...
- Page 87 Service Manual 6.Remove electric box assy Electric box assy Remove the 2 screws fixing the cover of elec- tric box. Lift to remove the cover. Loosen the wire and disconnect the terminal. Lift to re- move the electric box assy. 7.Remove 4-way valve assy Unscrew the fastening nut of the 4-way Valve 4-way Valve Assy...
- Page 88 Service Manual 9.Remove motor and motor support Motor support Remove the 4 tapping screws fixing the motor. Pull out the lead-out wire and remove the Motor motor. Remove the 2 tapping screws fixing the motor support. Lift motor support to re- move it.
- Page 89 Service Manual 11.Remove Compressor Remove the 2 screws fixing the gas valve. Unsolder the welding spot connecting gas valve and air return pipe and remove the gas valve. (Note: it is necessary to warp the gas valve when unsoldering the welding spot.) Remove the 2 Liquid valve screws fixing liquid valve.
- Page 90 Service Manual LI024CO-180P432 LI024HO-180P432 NOTE: Take heat pump for example. 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 91 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 92 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 93 Service Manual Steps Procedure 6. Remove the soundproof sponge Tear off the sticking stripe and then remove the soundproof sponge. soundproof sponge 7. Remove isolation plate Remove the 2 screws connecting the isolation plate and condenser side plate; remove the 3 screws connecting the isolation plate and chassis, and then remove the isolation plate.
- Page 94 Service Manual Steps Procedure 9. Remove compressor 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 from foreign objects. condenser sub-assy 10.
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Page 95: 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 96: 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 97: 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(15K) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -2.2 138.1 18.75 138.2 3.848 208.4 1.071 -0.4 128.6 69.8 17.93 3.711 210.2 1.039 121.6... - Page 98 Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -2.2 181.4 25.01 138.2 5.13 208.4 1.427 -0.4 171.4 69.8 23.9 4.948 210.2 1.386 162.1 71.6 22.85 141.8 4.773 1.346 153.3 73.4...
- Page 99 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor(50K) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -20.2 853.5 120.2 18.34 190.4 4.754 -18.4 799.8 51.8 93.42 17.65 192.2 4.609 -16.6 53.6 89.07 123.8 16.99 4.469 -14.8 703.8 55.4 84.95 125.6 16.36...
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