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Related Manuals for Inventor Air Conditioners WGN18D/GN18D
Summary of Contents for Inventor Air Conditioners WGN18D/GN18D
- Page 1 Service Manual WGN18D/GN18D WGN24D/GN24D...
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Page 2: Table Of Contents
Service Manual Table of Contents Part Ⅰ : Technical Information ...............1 1. Summary ........................1 2. Specifications ......................3 2.1 Specification Sheet ......................3 2.2 Operation Characteristic Curve ..................11 2.2 Capacity Curve in Different Outdoor Temperature ............11 2.3 Cooling and Heating Data Sheet in Rated Frequency ........... 11 2.5 Noise Curve ........................12 3. - Page 3 Service Manual 9. Maintenance ......................49 9.1 Malfunction Display of Indoor Unit ..................49 9.2 Procedure of Troubleshooting ..................51 9.3 Maintenance method for normal malfunction ..............69 10. Exploded View and Parts List ..............71 10.1 Indoor Unit ........................71 10.2 Outdoor Unit .........................79 11. Removal Procedure ..................87 11.1 Removal Procedure of Indoor Unit ................87 11.2 Removal Procedure of Outdoor Unit ................92...
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Page 4: Part Ⅰ : Technical Information
Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit: WGN18D WGN24D Outdoor Unit: GN18D GN24D Technical Information... -
Page 5: Specifications
Service Manual 2. Specifications 2.1 Specification Sheet WGN18D/GN18D Model Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity 5130 Heating Capacity 5280 Cooling Power Input 1600 Heating Power Input 1450 Cooling Power Current Heating Power Current... - Page 6 Service Manual Model of Outdoor Unit GN18D Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD Compressor Model QXF-B141ZF030A Compressor Oil 68DA Compressor Type Rotary L.R.A. Compressor RLA Compressor Power Input 1410 Overload Protector 1NT11L-6233/KSD115 C/HPC 115/95 Throttling Method Electron expansion valve Operation Temp 16~30 Ambient Temp (Cooling) -15~43...
- Page 7 Service Manual WGN24D/GN24D Model Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity 6155 Heating Capacity 6448 Cooling Power Input 1760 Heating Power Input 1860 Cooling Power Current Heating Power Current Rated Input 2600 Rated Current 10.9 Rated Heating Current 11.3...
- Page 8 Service Manual Model of Outdoor Unit GN24D Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD Compressor Model QXF-B141ZF030A Compressor Oil 68DA Compressor Type Rotary L.R.A. Compressor RLA Compressor Power Input 1410 Overload Protector 1NT11L-6233/KSD115 C/HPC 115/95 Throttling Method Electron expansion valve Operation Temp 16~30 Ambient Temp (Cooling) -15~43...
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Page 9: Operation Characteristic Curve
Service Manual 2.2 Operation Characteristic Curve Cooling Heating 220V Conditions 220V Indoor: DB27°C/WB19°C Outdoor: DB35°C/WB24°C Indoor air flow: High Pipe length: 5m 230V 230V 240V Conditions Indoor: DB20°C/WB15°C 240V Outdoor: DB7°C/WB6°C Indoor air flow: High Pipe length: 5m 10 20 30 40 50 60 70 80 90 100 Compressor speed (rps) Compressor speed (rps) 2.2 Capacity Curve in Different Outdoor Temperature... -
Page 10: Noise Curve
Service Manual 2.5 Noise Curve Outdoor side noise Indoor side noise High Super High Middle Indoor Fan Motor Rotating Speed Compressor frequency/Hz Technical Information... -
Page 11: Outline Dimension Diagram
Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit Ф55 Ф55 Ф55 Ф55 Φ55 Φ55 Unit:mm Model 18/24K Φ55 Φ55 Technical Information... -
Page 12: Outdoor Unit
Service Manual 3.2 Outdoor Unit GN18D Unit:mm GN24D Unit:mm Technical Information... -
Page 13: Refrigerant System Diagram
Service Manual Refrigerant System Diagram GN18D GN24D Cooling and heating model Outdoor unit Indoor unit Gas pipe side Valve 4-Way valve Di s charge Heat Suction Accumlator exchanger Compressor (evaporator) Heat exchanger Liquid pipe (condenser) side Valve Strainer Electric Strainer expand valve COOLING... -
Page 14: 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 15 Service Manual ● Outdoor Unit GWH18AAD-K6DNA1A/O GWH24AAD-K6DNA1A/O GWH24QE-K6DNA1C/O 63610000218 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 16: 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 17 Service Manual Outdoor Unit GN18D, GN24D ● 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...
- Page 18 Service Manual GWH18AAD-K6DNA1B/O ● Top view Name Compressor Reactor 2 Reactor 1 Chassis electric heating Compressor electric heating 4-way valve DC fan Earthing wire Communication wire Neutral wire Live wire Electronic expansion valve Temperature sensor Overloard DRED ● Bottom view Technical Information...
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Page 19: Function And Control
Service Manual 6. Function and Control 6.1 Remote Controller Introduction Buttons on remote controller On/Off button Mode button Fan button ▲/ button Swing button Sleep button Temp button Turbo button I Feel button Timer button WiFi button WiFi Light button Icon Display on Remote Controller Temp. - Page 20 Service Manual 1. ON/OFF button Press this button to turn on the unit. Press this button again to turn off the unit. 2. MODE button Each time you press this button,a mode is selected in a sequence that goes from AUTO, COOL, DRY, FAN, and HEAT *, as the following: * Note: Only for models with heating function.
- Page 21 Service Manual TURBO button Under COOL or HEAT mode, press this button to activate / deactivate the Turbo function. 9. I FEEL button Press this button to start I FEEL function and " " will be displayed on the remote controller. After this function is set, the remote controller will send the detected ambient temperature to the controller and the unit will automatically adjust the indoor temperature according to the detected temperature.
- Page 22 Service Manual WIFI Function Press this button to turn on the unit. Press this button again to turn off the unit. Press "MODE" and "TURBO" button simultaneously to turn on or turn off WIFI function. When WIFI function is turned on, the " "...
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Page 23: Ewpe Smart App Operation Manual
Service Manual 6.3 Ewpe Smart App Operation Manual Control Flow Chart Internet Cloud intelligent Cellular/ Home Wi-Fi home Other Wi-FI appliances Home wireless router Home Wi-Fi Operating Systems Requirement for User's smart phone: iOS system Android system Support iOS7.0 and Support Android 4.4 and above version above version... -
Page 24: Brief Description Of Modes And Functions
Service Manual 6.4 Brief Description of Modes and Functions 1.Basic function of system (1)Cooling mode (1) Under this mode, fan and swing operates at setting status. Temperature setting range is 16~30 (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 25 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 16 C.
- Page 26 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 27 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 28 Service Manual 1. Starting estimation: After the compressor stopped working for 180s, if T >[T (the temperature of hysteresis is 2 )], the inner pipe frozen-preventing frequency-limited temperature 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 29 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 30 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 31 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 32 Service Manual 6. Electric Heating Function of Chassis (1) When T ≤0ºC, the electric heating of chassis will operate; outdoor amb. (2) When T >2ºC, the electric heating of chassis will stop operation; outdoor amb. (3)When 0ºC<T ≤2ºC, the electric heating of chassis will keep original status. outdoor amb.
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Page 33: 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 34 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 35 Service Manual Safety Operation of Flammable Refrigerant Qualification requirement for installation and maintenance man ●All the work men who are engaging in the refrigeration system should bear the valid certification awarded by the authoritative organization and the qualification for dealing with the refrigeration system recognized by this industry. If it needs other technician to maintain and repair the appliance, they should be supervised by the person who bears the qualification for using the flammable refrigerant.
- Page 36 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 37: 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 38 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 39: Installation Parts-Checking
Service Manual 8.2 Installation Parts-checking (2) According to the local safety regulations, use qualified power supply circuit and air switch. Name Name (3) Make sure the power supply matches with the requirement Indoor unit Sealing gum of air conditioner. Unstable power supply or incorrect wiring Outdoor unit Wrapping tape may result in electric shock,fire hazard or malfunction. - Page 40 Service Manual 5. Connect the Pipe of Indoor Unit (2) Drill the screw fixing holes on the wall with impact drill (the (1) Aim the pipe joint at the corresponding bellmouth.(As show specification of drill head should be the same as the plastic in Fig.5) expansion particle) and then fill the plastic expansion particles (2) Pretightening the union nut with hand.
- Page 41 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) screw (2) Reserve a certain length of drain hose and power cord...
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Page 42: Installation Of Outdoor Unit
Service Manual 8.6 Installation of Outdoor unit Refer to the following table for wrench moment of force: Tightening torque(N . m) 1. Fix the Support of Outdoor Unit(Select it according to Hex nut diameter(mm) the actual installation situation) Φ6 15~20 Φ9.52 30~40 (1) Select installation location according to the house structure. -
Page 43: Vacuum Pumping And Leak Detection
Service Manual (3) The water outlet cant be placed in water in order to drain 8.8 Check after Installation and Test smoothly.(As show in Fig.27) 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 44: Maintenance
Service Manual 9. Maintenance 9.1 Malfunction Display of Indoor Unit 1. Malfunction display requirement When there are several malfunctions, they will be displayed circularly. 2. Malfunction display method (1) Hardware malfunction: immediate display; refer to “malfunction display table”; (2) Operation state: immediate display; refer to “malfunction display table”; (3) Other malfunctions: it is displayed after the compressor stops for 200s;... - Page 45 Service Manual ●Discharging method (1) remove the inverter cover(Outdoor Unit) Inverter cover P.C.board (Soldered surface) (2)As shown below,connect the discharge resistance(approx.100Ω20W)or plug of the sold ering iron to voltage between + - terminals of the electrolytic capacitor on PC Board for 30s, and then peformedischarging. NOTE: A large-capacity electrolytic capacitor is used in the outdoor unit controller(inverter).Therefore,if the power supply is turned off,charge(charging voltage DC280V to 380V)remains and disc harging takes a lot of time..
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Page 46: 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 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) Communication malfunction (E6) Troubleshooting for E6 malfunction Disconnect power and check if the connection wire of indoor and outdoor units and the built-in wire of electric box are correctly connected. Connect the wire properly according Is malfunction Correct connection? to the wiring eliminated?
- Page 51 Service Manual (6). 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 52 Service Manual Outdoot Unit (1) Malfunction of Desynchronizing of Compressor (H7) Main check point: Whether the system pressure is too high? Whether the electronic expansion valve can work normally? Whether the radiation for the unit is in good condition? Malfunction diagnosis process: Desynchronizing malfunction occurs after de-energizing and turning on the unit...
- Page 53 Service Manual Desynchronizing malfunction occurs during operation process Check whether Whether the outdoor fan can Replace fan capacitor the fan terminal is operate normally? connected well Improve the radiation circumstances for the Whether the radiation for the unit (such as clean heat unit is in good condition? Replace outdoor fan exchanger, improve...
- Page 54 Service Manual (2) Malfunction of Temperature Sensor (F3/F4/F5) Main check point: Whether the temperature sensor is damaged? Whether the terminal of temperature sensor is loose or not connected? Whether the main board is damaged? Malfunction diagnosis process: Start the troubleshooting for temperature sensor Check the connection between temperature sensor and wiring...
- Page 55 Service Manual (3) Malfunction of Overload Protection of Compressor (H3) and Discharge High-temperature Protection of Compressor (E4) Main check point: Whether the electronic expansion valve is connected well and whether its damaged? Whether the refrigerant is leaking? Whether the overload protector is damaged? Malfunction diagnosis process: Start Whether the overload protector is...
- Page 56 Service Manual (4) Charging Malfunction of Capacitor (PU) Main check point: Whether input power is normal? Main board is damaged. Malfunction diagnosis process: Energize and turn on the unit; wait for 1 min Measure the voltage at both ends of big electrolytic capacitor with the DC notch of universal meter There is malfunction for the...
- Page 57 Service Manual (5) Malfunction of Overload Protection (E8) Main check point: Whether the tube temperature sensor is normal? Whether the outdoor ambient temperature is within the normal range? Whether indoor fan and outdoor fan can operate normally? Whether radiation environment inside or outside the unit is good? Malfunction diagnosis process: Start Replace the tube temperature...
- Page 58 Service Manual (6) Malfunction of IPM Protection (H5) Main check point: Whether input voltage is within the normal range? Whether wires of compressor are connected reliably, tightly or correctly? Whether the resistance of compressor coil is normal? Whether the insulation between compressor coil and copper pipe is in good condition? Whether the unit is overloading? Whether the radiation for the unit is in good condition? Whether the volume of charged refrigerant is proper?
- Page 59 Service Manual (7) Malfunction of PFC Protection (HC) Main check point: Whether power supply is normal? Malfunction diagnosis process: Start Check whether power supply is normal Turn on the unit again after the power is Is power abnormal? resumed Replace main board of outdoor unit Installation and Maintenance...
- Page 60 Service Manual (8) Malfunction of Communication (E6) Main check point: Check whether connection wires between indoor unit and outdoor unit and wiring inside the unit are connected well? Check the main board of indoor unit or main board of outdoor unit is damaged? Malfunction diagnosis process: Communication malfunction De-energize the unit and then...
- Page 61 Service Manual (9) Malfunction of Failure Start-up of Compressor (LC) Main check point: Whether the compressor wires are connected correctly? Whether the stop time for compressor is enough? Whether compressor is damaged? Whether the refrigerant-charging volume is superfluous? Malfunction diagnosis process: Energize and turn on the unit Whether the stop time for...
- Page 62 Service Manual (10) 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 63 Service Manual (11) Other Malfunction 1.IPM module temperature sensor is open-circuited (P7) Hardware of main board is damaged. Please replace main board. 2.Overheating protection of IPM module (P8) ① Poor radiation because the module radiator is dirty; ② IPM module is damaged; ③...
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Page 64: Maintenance Method For Normal Malfunction
Service Manual 9.3 Maintenance method 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 65: Indoor Unit
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... -
Page 66: Removal Procedure
Service Manual 11. Removal Procedure Caution: discharge the refrigerant 11.1 Removal Procedure of Indoor Unit completely before removal. 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 67 Service Manual Step Procedure 3. Remove panel Panel Display 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 Screws the panel;...
- Page 68 Service Manual Step Procedure 6. Remove electric box assy Screws Loosen the connection clasps between Clasps Cold plasma generator and electric box, and then remove the cold plasma generator. Shield cover of Electric box Electric box Step motor ① Cut off the wire binder and pull out the Indoor tube Grounding indoor tube temperature sensor.
- Page 69 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 70 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 71: 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 GWH18AAD-K6DNA1A/O and discharge the refrigerant completely before removal. Step Procedure 1. Remove big handle Remove the screw fixing big handle; slide out Screw the big handle down wards to make the clasp Big handle... - Page 72 Service Manual Step Procedure 4.Remove cabinet Remove the screws fixing cabinet and then remove the cabinet. Cabinet Screw 5.Remove right side plate and rear grill Remove the screws fixing right side plate Right side plate and then remove the right side plate. Screw Screw Remove the screws and then remove the...
- Page 73 Service Manual Step Procedure 6.Remove lef side plate Remove the screws fixing left side plate and then remove the letf side plate. Left side plate Screw 7.Remove axial flow blade Axial flow blade Remove the nut fixing axial flow blade and then remove the axial flow blade.
- Page 74 Service Manual Step Procedure 9.Remove motor Remove the screws fixing motor and then remove the motor. Screw Motor 10.Remove motor support Motor support Remove the screws fixing motor support and then remove the motor support. Screw 11.Remove 4-way valve assy Unsolder the spot weld of 4-way valve assy, compressor and condenser, and then remove the 4-way valve assy .
- Page 75 Service Manual Step Procedure 12.Remove compressor Remove 3 foot nuts on compressor, and then remove the compressor. Foot nuts Note: Protect the ports of discharge pipe and suction pipe to avoid foreign objects to enter it. Compressor 13.Remove clapboard Remove the screws fixing clapboard and Screw then remove the clapboard.
- Page 76 Service Manual Step Procedure Condenser 15.Remove condenser Remove one screw fixing the condenser, then remove the condenser. Screw Installation and Maintenance...
- Page 77 Service Manual Steps Procedure 1. Remove top panel Twist off the screws used for fixing the handle and v alve cover , pull the handle and v alve cover up ward to remove it. handle top panel Remove the 3 screws connecting the top panel with the front panel and the right side plate, and then remove the top panel.
- Page 78 Service Manual Remove the 5 screws connecting the panel with the chassis and the motor support, and then remove the panel. Remove the 6 screws connecing the left side plate and right side plate and then remove rear grill rear grill panel 3.
- Page 79 Service Manual 4. Remove fan motor axial flow blade Remove the nuts fixing the blade and then remove the axial flow blade. motor support Remove the 4 tappin g screw s fixing the motor; disconnect the leading wire insert of the motor and then remove the moto r.
- Page 80 Service Manual 6.Remove soundproof sponge Since the piping ports on the soundproof sponge are torn easily, remove the soundproof sponge carefully soundproof sponge 7. Remove Isolation sheet x i f and then remove the Isolation sheet. Isolation sheet 8. Remov e 4-way valv e assy Discharge the refrigerant completely;unsolder the pipelines connecting the compressor and the condenser assy,and then remove the 4-way...
- Page 81 Service Manual 9. Remov e compressor Remove the 3 foot nuts fixing the compressor and then remove the compressor. compressor 10.Remove condenser sub-assy Electron expansion valve support Remove the screws connecting the support (condenser) and condenser assy,and then remove the support(condenser). condenser sub-assy Remove the chassis sub-assy and condenser sub-assy.
- Page 82 Service Manual GWH18AAD-K6DNA1B/O Steps Procedure 1. Before disassembly 2.Remove big handle big handle big handle and then remove the handle. big handle 3. Remove top cover top cover Remove connection screws connecting the top panel with the front panel and the right side plate, and then remove the top panel.
- Page 83 Service Manual Installation and Maintenance...
- Page 84 Service Manual Installation and Maintenance...
- Page 85 Service Manual Installation and Maintenance...
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Page 86: 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 60.8 69/70 69.8 78/79 78.8 62/63... -
Page 87: 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 88: 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( 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 89 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...
- Page 90 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...
- Page 91 For product improvement, specifications and appearance in this manual are subject to change without prior notice.
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