Skyworth SMVH09B-2A2A3NG Service Manual
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Skyworth SMVH09B-2A2A3NG Service Manual

Refrigerant r32
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MODEL
SMVH09B-2A2A3NG
SMVH12B-3A2A3NG
SMVH18B-4A2A3NG
SMVH24B-5A2A3NG
(Refrigerant R32)

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Summary of Contents for Skyworth SMVH09B-2A2A3NG

  • Page 1 MODEL SMVH09B-2A2A3NG SMVH12B-3A2A3NG SMVH18B-4A2A3NG SMVH24B-5A2A3NG (Refrigerant R32)

  • Page 2: Table Of Contents

    CONTENT 1. Summary and Features ................1 2. Safety Precautions ..................3 3. Specifications ....................5 3.1 Unit Specifications ..................... 5 3.2 Operation Characteristic Curve ................9 3.3 Capacity Variation Ratio According to Temperature ..........9 3.4 Cooling and Heating Data Sheet in Rated Frequency ......... 10 3.5 Noise Curve ......................
  • Page 3 9. Troubleshooting ..................62 9.1 Error Code List ......................62 9.2 Procedure of Troubleshooting ................65 10. Removal Procedure ................82 10.1 Removal Procedure of Indoor Unit ............... 82 10.2 Removal Procedure of Outdoor Unit ..............86...

  • Page 4: Summary And Features

    Summary and Features 1. Summary and Features Model Product Code Indoor unit Outdoor unit Power Supply Power Supply Intake SMVH09B-2A2A3NG KEB001Z1530 SMVH09B-2A2A3NG(I) SMVH09B-2A2A3NG(O) SMVH12B-3A2A3NG KEB001Z1540 SMVH12B-3A2A3NG(I) SMVH12B-3A2A3NG(O) 220-240V~, Outdoor Unit 50Hz,1Ph SMVH18B-4A2A3NG KEB001Z1550 SMVH18B-4A2A3NG(I) SMVH18B-4A2A3NG(O) SMVH24B-5A2A3NG KEB001Z1560 SMVH24B-5A2A3NG(I) SMVH24B-5A2A3NG(O) Indoor Unit...
  • Page 5 Summary and Features Outdoor Unit SMVH18B-4A2A3NG(O) SMVH24B-5A2A3NG(O)

  • Page 6: Safety Precautions

    Safety Precautions 2. Safety Precautions Installing, starting up, and servicing air conditioner can be hazardous due to system pressure, electrical components, and equipment location, etc.Only trained, qualified installers and service personnel are allowed to install, start-up, and service this equipment.Untrained personnel can perform basic maintenance functions such as cleaning coils. All other operations should be performed by trained service personnel.When handling the equipment, observe precautions in the manual and on tags, stickers, and labels attached to the equipment.
  • Page 7 Safety Precautions Please read this operating manual carefully before operating the unit. Appliance filled with flammable gas R32. Before use the appliance, read the owner's manual first. Befoer install the appliance,read the installation manual first. Befoer repair the appliance ,read the service manual first. The figures in this manual may be different with the material objects ,please refer to the material objects for reference.

  • Page 8: Specifications

    Specifications 3. Specifications 3.1 Unit Specifications Parameter Unit Value Model SMVH09B-2A2A3NG SMVH12B-3A2A3NG Product Code KEB001Z1530 KEB001Z1540 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode outdoor outdoor Cross-sectional Area of Power Cable Conductor Recommended Power Cable(Core) Min/Max. Voltage...
  • Page 9 Specifications Outdoor Unit Model SMVH09B-2A2A3NG(O) SMVH12B-3A2A3NG(O) Compressor Trademark panasonic panasonic panasonic Wanbao Appliances panasonic Wanbao Appliances Compressor Manufacturer Compressor(guangzhou) Compressor(guangzhou) CO.,LTD./panasonic CO.,LTD./panasonic Compressor Model 9RS092ZAB21 9RS102ZAA21 Compressor Oil FV50S FV50S Compressor Type Rotary Rotary Compressor LRA. 20.2 16.5 Compressor RLA 6.22...
  • Page 10 Specifications Parameter Unit Value Model SMVH18B-4A2A3NG SMVH24B-5A2A3NG Product Code KEB001Z1550 KEB001Z1560 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode outdoor outdoor Cross-sectional Area of Power Cable Conductor Recommended Power Cable(Core) Min/Max. Voltage 198/264 198/264 Cooling Capacity 5270 6450 Min.
  • Page 11 Specifications Outdoor Unit Model SMVH18B-4A2A3NG(O) SMVH24B-5A2A3NG(O) Compressor Trademark panasonic panasonic panasonic Wanbao Appliances panasonic Wanbao Appliances Compressor Manufacturer Compressor(guangzhou) Compressor(guangzhou) CO.,LTD./panasonic CO.,LTD./panasonic Compressor Model 9RD132ZEA21 9RD160ZAA21 Compressor Oil FV50S FV50S Compressor Type Rotary Rotary Compressor LRA. Compressor RLA Compressor Power Input 1260 1645 Compressor Overload Protector...

  • Page 12: Operation Characteristic Curve

    Specifications 3.2 Operation Characteristic Curve Cooling Heating Condition Condition Indoor:DB 20°C Indoor:DB 27°C WB19°C Indoor air flow: Super High Indoor air flow: Super High Pipe length:5m Pipe length:5m Voltage:230V Voltage:230V Compressor Speed(rps) Compressor Speed(rps) 3.3 Capacity Variation Ratio According to Temperature Heating operation ambient temperature range is -20ºC~24ºC Cooling Heating...

  • Page 13: Cooling And Heating Data Sheet In Rated Frequency

    Specifications 3.4 Cooling and Heating Data Sheet in Rated Frequency Pressure of gas pipe Inlet and outlet pipe Rated cooling Fan speed of connecting indoor and temperature of heat Outdoor fan Model condition(°C) (DB/WB) indoor unit outdoor unit exchanger mode (rpm) Indoor Outdoor P (MPa)

  • Page 14: Function And Control

    Function and Control 4. Function and Control 4.1 Remote Controller Operations Set fan speed I feel Wi-Fi signal ● Turbo mode Quiet mode Auto mode Clean mode ● Dual-8 nixietube Cooling mode Health function ● Dry mode ECO mode ● Fan mode Sleep mode ●...
  • Page 15 Function and Control ON/OFF button Press this button can turn on or turn off the air conditioner. MODE button Press this button to select your required operation mode. Auto Cool Heat ● When selecting auto mode, air conditioner will operate automatically according to ex-factory setting. Set temperature can’t be adjusted and will not be displayed as well.
  • Page 16 Function and Control ● When selecting " " with remote controller, it’s auto swing. left&right swing louver of air conditioner will swing left&right automatically at the maximum angle. ● When selecting " " with remote controller,it's the fixed position swing. Left&right swing louver of air conditioner will stop at that position as shown by the icon to swing.
  • Page 17 Function and Control TIMER ON button This button can set the time for timer on. After pressing this button, " " icon disappears, "ON" and " " icon on remote controller blinks. Press "+" or "- "button within 5s to set "TIMER ON" time. Each pressing of "+" or "-" button, the time will increase or decrease 1 hour.
  • Page 18 Function and Control Timing defrost In the heating mode, press "SLEEP" and "TURBO" buttons together for 3s would start or cancel the Timing defrost. The minimum cooling temperature setting In the off mode,pressing "TEMP"and "-" button at the same time,the LCD will display the minimum cooling temperature.The default temperature is 16°C and you can adjust the temperature with "+"...

  • Page 19: Smart App User Guide

    Function and Control 4.2 Smart APP User Guide 4.2.1 Download the Easy Home AMS Application(Referrer to as APP hereinafter) Search "Easy Home AMS" to download Andriod version APP from Google Play and search "Easy Home AMS" to download IOS version APP from App Store. 4.2.2 Production Introduction Easy Home air conditioner is functioning based on the built-in smart module SWM100 through the Wi-Fi network, that the mobile phones or other mobile devices can be connected to the Easy Home air conditioner to monitor and control the air...
  • Page 20 Function and Control D. Waiting for APP automatically search for configure the Air conditioner. Click to choose air conditioner on the list. 21:09 21:09 21:09 Search for air conditioners Search for air conditioners Search for air conditioners Notice: Air conditioner hotspot name and password can be find at the left corner of the indoor unit.
  • Page 21 Connecting Air Conditioner Available Networks... Available Networks Available Networks Family-ac04 Network Family-ac04 Family-ac04 SkySAC-EADF Please Input the password of skyworth-ac04 Click Switch Button and connecting the Cancel Net t wor w k Family-ac04 Switch Switch space return I. Click to change network.
  • Page 22 Function and Control 4.2.6 Search the air conditioner in Wireless Local Area Network (WLAN) If the air conditioner has already connected to the WLAN, a new mobile phone users that connected with same WLAN can search the air conditioner through the APP. Enter the APP and select "Add AC" from the menu, and enter the page as shown in figure.
  • Page 23 Function and Control 4.2.8 Problems and Solutions (1 )Requirement for use ● Wireless Router for Wi-Fi function ● Android 4.4 or later version or iOS7.0 or later version iPhone. Notice: Please connect the router to the Internet when it required. (2) If cannot control air conditioner by APP ●...
  • Page 24 When the indication light is turned off: Wi-Fi light gets off, the Wi-Fi function can still be controlled. (13 )What is the applicable range for Skyworth Air Conditioner Wi-Fi module? This module is only applicable to Skyworth Air conditioner. (14) Disconnected frequently Please check if there are more than 2 sets of mobile devices connected via the same Wi-Fi router to control the air conditioner.

  • Page 25: Description Of Each Control Operation

    Function and Control 4.3 Description of Each Control Operation 4.3.1 The mainboard design with below function (1) Auto (2) Cooling (3) Dehumidifying (4) Air fan (5) Heating 4.3.2 Control Indoor fan(Quiet、speed 1、speed 2、speed 3、speed 4、speed 5、Turbo), left and right louver, up and down louver, buzzer, display, outdoor electric heater(option), outdoor power, healthy(option).
  • Page 26 Function and Control 4.3.6 Other Function (1) Auto button when you press this button,it will enter auto mode,indoor motor in auto fan speed,Indoor fan run and louver motor stop. Press the auto button,unit will be off. (2) Filter cleaning Indoor motor fan run 600 hours ,unit will show CL to notice filter cleaning.The CL is off after turn off unit (3) Health Indoor healthy function start when push healthy button.

  • Page 27: Installation Manual

    Installation Manual 5. Installation Manual 5.1 Safety operation of flammable refrigerant 5.1.1 Qualification requirement for installation and maintenance man All the work men who are engaging in the refrigeration system should bear thevalid certification awarded by the authoritative organization and the qualificationfor dealing with the refrigeration system recognized by this industry. If it needsother technician to maintain and repair the appliance, they should be supervisedby the person who bears the qualification for using the flammable refrigerant.It can only be repaired by the method suggested by the equipment’s manufacturer.

  • Page 28: Notices For Installation

    Installation Manual 5.1.6 Installation prepare To ensure safety, please be mindful of the following precautions. WARNING 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 29 Installation Manual 5.1.1 Installation Site Instructions Installing the unit in the following places maycause malfunction. If it is unavoidable, please consult the local dealer: 1.The place with strong heat sources,vapors,flammable or explosive gas,or volatile objects spread in the air. 2.The place with high-frequency devices (such as welding machine,medical equipment). 3.The place near coast area.

  • Page 30: Installation Dimension Diagram

    Installation Manual 5.3 Installation Dimension Diagram Space to the wall At least 15cm At least 15cm Space to the wall Drainage pipe...

  • Page 31: Installation Indoor Unit

    Installation Manual 5.4 Installation Indoor Unit Step 1: Choosing installation location Recommend the installation location to the client and then confirm it with the client. Step 2: Install wall-mounting frame 1. Hang the wall-mounting frame on the wall; adjust it in horizontal position with the level meter and then point out the screw fixing holes on the wall .
  • Page 32 Installation Manual Step 5: Connect the pipe of indoor unit 1. Aim the pipe joint at the corresponding bellmouth. pipe pipe joint union nut 2. Pretightening the union nut with hand. 3. Adjust the torque force by referring to the following sheet. Place the open-end wrench on the pipe joint and place the torque wrench on the open-end union nut.
  • Page 33 Installation Manual Step 7: Connect wire of indoor unit 1. Open the panel, remove the screw on the wiring cover and then take down the cover. panel N(1) blue black brown yellow- green Outdoor unit connection screw wiring cover 2. Make the power connection wire go through the cable-cross hole at the back of indoor unit and then pull it out from the front side.

  • Page 34: Installation Outdoor Unit

    Installation Manual 5.5 Installation Outdoor Unit Step 1: Fix the support of outdoor Select it according to the actual installation situation 1. Select installation location according to the house structure. 2. Fix the support of outdoor unit on the selected location with expansion screws. Note: ●...
  • Page 35 Installation Manual Step 5: Connect indoor and outdoor pipe 1. Remove the wire clip; connect the power connection wire and signal control wire (only for cooling and heating unit) to the wiring terminal according to the color,fix them with screws. 2.
  • Page 36 Installation Manual Step 7: Vacuum pumping Use vacuum pump 1. Remove the valve caps on the liquid valve and gas valve and liquid valve piezometer the nut of refrigerant charging vent. gas valve 2. Connect the charging hose of piezometer to the refrigerant refrigerant charging valve cap charging vent of gas valve and then connect the other charging...

  • Page 37: Check After Installation

    Installation Manual 5.6 Check after installation Check according to the following requirement after finishing installation. Items to be checked Possible malfunction Has the unit been installed firmly? The unit may drop, shake or emit noise It may cause in sufficient cooling(heating) Have you done the refrigerant leakage test? capacity.

  • Page 38: Configuration Of Connection Pipe

    Installation Manual 5.8 Configuration of connection pipe 1. Standard length of connection pipe ● 5m, 7.5m, 8m. 2. Min. length of connection pipe is 3m. 3. Max. length of connection pipe and max. high difference. Max length Max height Max length Max height Cooling capacity Cooling capacity...

  • Page 39: Pipe Expanding Method

    Installation Manual 5.9 Pipe expanding method Improper pipe expanding is the main cause of refrigerant leakage. Please expand the pipe according to the following steps: A: Cut the pipe Confirm the pipe length according to the distance of indoor unit and outdoor unit. Cut the required pipe with pipe cutter. pipe pipe cutter leaning...

  • Page 40: Construction Views

    Construction Views 6. Construction Views 6.1 Indoor Unit Unit:mm Model 1081 ● 09K 169.5 160.5 Φ55 Φ55 ● 12K Φ55 Φ55...
  • Page 41 Construction Views ● 18K 96.5 188.5 Φ55/Φ70 Φ55/Φ70 ● 24K 1081 Φ55 Φ55 Unit:mm...

  • Page 42: Outdoor Unit

    Construction Views 6.2 Outdoor Unit Model: SMVH09B-2A2A3NG(O) , SMVH12B-3A2A3NG(O) Model: SMVH18B-4A2A3NG(O)
  • Page 43 Construction Views Model: SMVH24B-5A2A3NG(O) Unit:mm...

  • Page 44: Exploded Views And Parts List

    Exploded Views and Parts List 7. Exploded Views and Parts List 7.1 Indoor Unit Model:SMVH09B-2A2A3NG(I)
  • Page 45 Exploded Views and Parts List Part Code Description SMVH09B-2A2A3NG(I) Product Code KEB001N1530 Decorate Strip K21200002P01 Panel K20000051T Filter Subassembly K15420004 Panel K20000092 Left Axile Bush K15210001 Air Louver K15200025 Swing Louver K15200004 Chassis Subassembly K21400028 Water Pan Rubber K62600006 Bearing Rubber Ring Subassembly...
  • Page 46 Exploded Views and Parts List Model: SMVH12B-3A2A3NG(I)
  • Page 47 Exploded Views and Parts List Part Code Description SMVH12B-3A2A3NG(I) Product Code KEB001N1540 Decorate Strip K21200003P01 Panel K20000053T Filter Subassembly K15420003 Panel Body K20000052 Left Axile Bush K15210001 Air Louver K15200026 Swing Louver K15200002 Chassis Subassembly K21400042 Water Pan Rubber K62600006 Bearing Rubber Ring Subassembly K62400002 Cross-flow Fan...
  • Page 48 Exploded Views and Parts List Model: SMVH18B-4A2A3NG(I)
  • Page 49 Exploded Views and Parts List Part Code Description SMVH18B-4A2A3NG(I) Product Code KEB001N1550 Decorate Sheet K21200005P01 Panel K20000064T Screw Cap K21830005 Filter Subassembly K15420006 Panel K20000063 Left Axile Bush K15210001 Air Louver K15200030 Swing Louver K15200007 Chassis Subassembly K21400005 Water Pan Rubber K62600006 Bearing Rubber Ring Subassembly K62400004...
  • Page 50 Exploded Views and Parts List Model: SMVH24B-5A2A3NG(I)
  • Page 51 Exploded Views and Parts List Part Code Description SMVH24B-5A2A3NG(I) Product Code KEB001N1560 Panel K20000066T Decorate Strip K21200006P01 Screw Cap K21830005 Filter Subassembly K15420012 Panel K20000065 Left Axile Bush K15210001 Air Louver K15200031 Swing Louver K15200015 Chassis Subassembly K21400013 Water Pan Rubber K62600006 Bearing Rubber Ring Subassembly K62400004...

  • Page 52: Outdoor Unit

    Exploded Views and Parts List 7.2 Outdoor Unit Model: SMVH09B-2A2A3NG(O) ,SMVH12B-3A2A3NG(O) 25 24...
  • Page 53 Exploded Views and Parts List Part Code Description SMVH09B-2A2A3NG(O) SMVH12B-3A2A3NG(O) Product Code KEB001W1530 KEB001W1540 Grill K21600001 K21600001 Axial Flow Fan K15010001 K15010001 Motor K16800008 K16800008 Front Panel K11010001P K11010001P Left Side Panel K10600067 K10600067 Motor Support K1120002802 K11200028 Top Cover...
  • Page 54 Exploded Views and Parts List Model: SMVH18B-4A2A3NG(O)
  • Page 55 Exploded Views and Parts List Part Code Description SMVH18B-4A2A3NG(O) Product Code KEB001W1550 Grill K21600005 Axial Flow Fan K15010005 Fan Motor K16800028 Front Panel K11010007P Chassis Subassembly K11034018P Small Handle K22210004 Left Side Panel K10600031P Motor Support Subassembly K1120001703 Top Cover K10450034P Partition Board Subassembly K10440028...
  • Page 56 Exploded Views and Parts List Model: SMVH24B-5A2A3NG(O)
  • Page 57 Exploded Views and Parts List Part Code Description SMVH24B-5A2A3NG(O) Product Code KEB001W1560 Grill K21600002 Axial Flow Fan K15010002 Front Panel K11010002P Odu Fan Motor K16800015 Motor Support Subassembly K11200015 Left Side Panel K10600005P Small Handle K22210004 Partition Board Subassembly K10440015 Top Cover K10450010P Support Panel...

  • Page 58: Schematic Diagram

    Schematic Diagram 8. Schematic Diagram 8.1 Electrical Wiring Meaning of marks Symbol YEGN Color symbol ORANGE WHITE YELLOW YELLOW GREEN BROWN BLUE BLACK VIOLET Symbol COMP. 4WAY Name COMPRESSOR 4-WAY VALVE ELECTRONIC EXPANSION VALVE PROTECTIVE EARTH ◆ Indoor Unit These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
  • Page 59 Schematic Diagram ◆ Outdoor Unit Model: SMVH09B-2A2A3NG(O) , SMVH12B-3A2A3NG(O),SMVH18B-4A2A3NG(O) COMP Please don’t touch any electronic component or terminal when the machine is running,stopping or has been powered off for less than 30 minutes to prevent the risk of electric shock!

  • Page 60: Pcb Printed Diagram

    Schematic Diagram 8.2 PCB Printed Diagram 8.2.1 Indoor Unit TOP VIEW Function Auxiliary heating zero wire connector Cold plasma zero wire connector Power supply zero wire connector 4 AC motor connector wire connector AC motor feedback connector Up and down louver motor connector Left and right louver motor connector...
  • Page 61 Schematic Diagram 8.2.2 Outdoor Unit Model:SMVH09B-2A2A3NG(O), SMVH12B-3A2A3NG(O), SMVH18B-4A2A3NG(O) Top View NO. Silk scren name Connector Function note U(BU), Compressor interface Used to connect the compressor: U (BU) - (YE) - yellow blue, V, W (RD) - red V(YE),W(RD) Overload interface Used to connect the compressor overload protector, the two white lines.
  • Page 62 Schematic Diagram Bottom View Name Compressor control circuit Compressor phase current sampling circuit & PFC current sampling circuit Power factor correction (PFC) control circuit Master control chip circuit DC fan electric circuit, sampling circuit Switch power supply circuit Wire communication circuit Fan and load control circuit...
  • Page 63 Schematic Diagram Model: SMVH24B-5A2A3NG(O) ● Top View NO. Silk scren name Connector Function note U(BU), Compressor interface Used to connect the compressor: U (BU) - (YE) - yellow blue, V, W (RD) - red V(YE),W(RD) Overload interface Used to connect the compressor overload protector, the two white lines. Random selection Used to connect to the six core thermal package: tube temperature (20 k @ 25 ℃...
  • Page 64 Schematic Diagram ● Bottom View Name Compressor control circuit Compressor phase current sampling circuit & PFC current sampling circuit Power factor correction (PFC) control circuit Master control chip circuit DC fan electric circuit, sampling circuit Switch power supply circuit EMI filter circuit Wire communication circuit Fan and load control circuit...

  • Page 65: Troubleshooting

    Troubleshooting 9. Troubleshooting 9.1 Error Code List Way of display By remote control By remote Error Name of malfunction and procedure within Error Possible Causes Solution Display conrol compressor stop Type Code status directly procedure 200s or direcly only after compressor stop 200s Filter cleaning reminder √...
  • Page 66 Troubleshooting Compressor phase √ Outdoor See Diagram 6 See Diagram 6 current peak protection Compressor phase √ Outdoor See Diagram 7 See Diagram 7 current RMS protection IPM protection √ Outdoor See Diagram 8 See Diagram 8 1. Check the radiator 1.
  • Page 67 Troubleshooting 1. Check the outdoor unit 1. The outdoor unit valve is valve is open. close. 2. The refrigerant connecting 2. The refrigerant connecting pipe installation errors. pipe installation errors. 3. Check the inside and Indoor and outdoor 3. The inside and outside √...

  • Page 68: Procedure Of Troubleshooting

    Troubleshooting 9.2 Procedure of Troubleshooting Diagram 1: E0 Start System Abnormal System Problem problem (Such: Stop etc) solved Solutions Outdoor motor abnormal speed Resolve rotate Problem speed problem (Under Cooling mode) solved Outdoor Resolve air abnormal intake Problem inlet problem (Under Cooling mode) solved The system is normal,...
  • Page 69 Troubleshooting Diagram 2: Main test points: ● Is the temperature of Indoor and Outdoor Unit too high? ● Is the fan of Indoor and Outdoor Unit operating normal? ● Is the radiating of Indoor and Outdoor Unit well(Including the fan speed is lower or not )? ●...
  • Page 70 Troubleshooting Diagram 3: Main test points: ● Check the electronic expansion valve is connected. ● Check the electronic expansion valve is in good condition. ● Check the refrigerant leakage or not. ● Check the overload protector is in good condition. ●...
  • Page 71 Troubleshooting Diagram 4: Main test points: ● Check the system pressure is high. ● Check the voltage is low. Step out during the Step out problem happen operation after power on Check the Check the fan terminals Change fan motor Check the outside fan compressor stop capacity C1...
  • Page 72 Troubleshooting Diagram 5: Main test points: ● Whether the compressor wiring is connected correct? ● Is compressor broken? ● Is time for compressor stopping enough? ● Whether refrigerant was charged too much? Power on the unit Is stop time of the Restart it up after 3 minutes compressor longer than 3 minutes?
  • Page 73 Troubleshooting Diagram 6 , 7, 8: 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? ●Is the charge volume of refrigerant correct?
  • Page 74 Troubleshooting Diagram 9: Main detection points: Is there jumper cap on the main board? Is the jumper cap inserted correctly and tightly? The jumper is broken? The motor is broken? Malfunction diagnosis process: Start Is there jumper cap on the mainboard? Assemble the jumper cap with the same model Is malfunction...
  • Page 75 Troubleshooting Diagram 10: Malfunction of Blocked Protection of IDU Fan Motor L2 Main detection points: SmoothlyIs the control terminal of PG motor connected tightly? SmoothlyIs the feedback interface of PG motor connected tightly? The fan motor can't operate? The motor is broken? Malfunction diagnosis process: Start While power is off stir the blade...
  • Page 76 Troubleshooting Diagram 11: Main check points: ● Test the indoor and outdoor unit connection wire and internal wiring is connected or in good condition. ● Check the indoor unit main board communication circuit and outdoor unit main board communication circuit (AP1)are in good condition. Start The unit operating normal before the fault been found...
  • Page 77 Troubleshooting Diagram 12: Outdoor unit communication circuit detection process as follows ( outdoor unit key test points) Start Use the Tesr 10 position to test voltage values by voltmeter Numerical change Use the Tesr 13 position to test voltage values by voltmeter Numerical change Outdoor unit error...
  • Page 78 Troubleshooting Diagram 13: P7 Troubleshooting Start The power supply voltage The normal nameplate voltage Error declared is not stable with volatility. rated wiithin 10% range The power supply voltage Adjust the power supply voltage, ensure Error declared is low and overload. that the voltage keep in normal range Make sure indoor and Clean the...
  • Page 79 Troubleshooting Diagram 14: Power factor correct (PFC) fault P9 (a fault of outdoor unit) (AP1 here in after 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 80 Troubleshooting 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 No power supply, or poor After energization, operation indicator isn’t bright yes,wait for power recovery.
  • Page 81 Troubleshooting 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 firml...
  • Page 82 Troubleshooting Appendix1:Resistance Table for Indoor and Outdoor Ambient Temperature Sensors (15K) Temp.(℃ ) Resistance(kΩ) Temp.(℃ ) Resistance(kΩ) Temp.(℃ ) Resistance(kΩ) Temp.(℃ ) Resistance(kΩ) 22.53 4.986 1.451 138.1 21.51 4.802 1.408 128.6 20.54 4.625 1.363 121.6 19.63 4.456 1.322 18.75 4.294 1.282 108.7 17.93...
  • Page 83 Troubleshooting Appendix2:ResistanceTable for Indoor and Outdoor Ambient Temperature Sensors (20K) Temp.(℃ ) Resistance(kΩ) Temp.(℃ ) Resistance(kΩ) Temp.(℃ ) Resistance(kΩ) Temp.(℃ ) Resistance(kΩ) 361.8 48.42 9.803 2.663 339.8 46.11 9.42 2.577 319.2 43.92 9.054 2.495 41.84 8.705 2.415 282.2 39.87 8.37 2.339 265.5 38.01...
  • Page 84 Troubleshooting Appendix 3: Resistance Table for Indoor and Outdoor Ambient Temperature Sensors (50K) Temp. Resistance Temp. Resistance Temp. Resistance Temp. Resistance (k ) (k ) (k ) (k ) 894.497 121.073 24.544 6.565 23.584 841.108 6.350 115.255 22.667 6.143 791.159 109.752 744.415 21.790...

  • Page 85: Removal Procedure

    Removal Procedure 10. Removal Procedure 10.1 Removal Procedure of Indoor Unit Warning Be sure to wait for a minimum of 10 minutes after turning off all power supplies before disassembly. NOTE: Take SMVH12B-3A2A1NE(I) for example. Procedure Note 1. Before disassembly 2.
  • Page 86 Removal Procedure Procedure Note 4. Remove the filter remove it. Filter 5. Remove electric box cove Electric box cover Loosen the screws of the electric box cover with screwdriver. 6. Remove the front case A: Open the screw cap on the front case. B: Remove the front case to seperate it with bottom assembly.
  • Page 87 Removal Procedure Procedure Note 7. Remove electric box A: Disconnect the indoor tube temperature Electric box sensor. B: Remove the screws at the joint of the earthing wire and evaporator. C: Loosen the clasp at the joint of the electric box.
  • Page 88 Removal Procedure Procedure Note 10. Remove motor and cross flow blade A: Remove the cross flow blade and motor. B: Remove the screws at the joint of the cross flowblade and the motor. Take down the motor. Cross flow blade Motor...

  • Page 89: Removal Procedure Of Outdoor Unit

    Removal Procedure 10.2 Removal Procedure of Outdoor Unit Warning Be sure to wait for a minimum of 10 minutes after turning off all power supplies before disassembly. NOTE: Take SMVH09B-3A2A1NE(O) for example. Procedure Note 1.Before disassembly Screw 2. Remove top cover Top cover Remove connection screws connecting the top cover plate with the front panel and the right side plate, and...
  • Page 90 Removal Procedure Procedure Note 4.Remove grille and panel A: Remove connection screws between the front grille and the front panel. Then remove the front grille. B: Remove connection screws connecting the front panel with the chassis and the motor support, and then remove the front panel. Grille Front panel Screw...
  • Page 91 Removal Procedure Procedure Note 6. Remove left side plate Remove connection screws connecting the left side plate with the condenser assy. Then remove the left side plate. Left side plate 7. Remove right side plate Right side plate Remove connection screws connecting the right side plate with the valve support and the electric box.
  • Page 92 Removal Procedure Procedure Note 9. Remove Reactor Take off the fixed screw,and you could take off the reactor. Reactor Screw 10. Remove motor and motor support Motor support Remove tapping screws fixing the motor and disconnect the leading wire insert of the motor. Motor Then remove the motor.
  • Page 93 Removal Procedure Procedure Note 12. 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. Warning 4-way valve assy Discharge the refrigerant completely before unsoldering,when unsoldering, wrap the gas valve with awet cloth completely to avoid damage to the valve caused by high temperature.
  • Page 94 Removal Procedure Procedure Note 14. Remove Expansion valve Assy Unsolder the spot weld of expansion valve Expansion valve Assy assy, liquid valve and condenser, and then remove the expansion valve assy . 14. Remove the compressor A: Remove the 2 screws fixing the gas valve and unsolder the welding joint between the gas valve and the air-return pipe to remove the gas valve.
  • Page 95 SHENZHEN SKYWORTH AIR CONDITIONING TECHNOLOGY CO. LTD NO.12 GAOKE AVENUE BAOLONG INDUSTRIAL CITY LONGGANG DISTRICT SHENZHEN GUANGDONG CHINA. Web: www.skyworth-ac.com Tel: (+86-755)26743958...

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