Skyworth SKVH09A-A3NAI Service Manual
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Skyworth SKVH09A-A3NAI Service Manual

Skyworth SKVH09A-A3NAI Service Manual

Refrigerant r32
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MODEL
SKVH09A-A3NA(I)
SKVH12A-A3NA(I)
(Refrigerant R32)

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Summary of Contents for Skyworth SKVH09A-A3NAI

  • Page 1 MODEL SKVH09A-A3NA(I) SKVH12A-A3NA(I) (Refrigerant R32)

  • Page 2: Table Of Contents

    CONTENT 1. Summary and Features ................1 2. Safety Precautions ..................2 3. Specifications ....................4 4. Function and Control .................. 5 4.1 Remote Control Operations ..................5 4.2 Description of Each Control Operation ..............11 5. Installation Manual ..................13 .............

  • Page 3: Summary And Features

    Summary and Features 1. Summary and Features Indoor Unit SKVH09A-A3NA(I) SKVH12A-A3NA(I) Panel Air outlet Horizontal louver Filter Air inlet Air outlet Remote Controller Display RA1A Temp. display Receiving window MODE Power display ON/OFF HEALTH SLEEP TURBO Cooling mode Heating mode I FEEL TEMP CLEAN...

  • Page 4: 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.
  • Page 5 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 6: Specifications

    Specifications 3. Specifications Indoor Unit Specifications Model SKVH09A-A3NA(I) SKVH12A-A3NA(I) Product Code KEZ001N0010 KEZ001N0020 Rated Voltage 220-240 220-240 Power Supply Rated Frequency Phases Power Supply Mode outdoor outdoor Cooling Capacity 2600 3500 Cooling Capacity Btu/h 8871 11942 Heating Capacity 2600 3500 Heating Capacity Btu/h 8871...

  • Page 7: Function And Control

    Function and Control 4. Function and Control 4.1 Remote Control Operations Set fan speed I feel Send signal Turbo mode Quiet mode Auto mode Clean mode Temperature diaplay Cool mode Health function Dry mode ECO mode Fan mode Sleep mode Heat mode Child lock Left&right swing...
  • Page 8 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 9 Function and Control button ● Press this button the left&right swing function can be started and canceled. The remote controller defaults to static swing condition. ● Press "MODE" button and " " button at the same time at remote controller OFF to switch between simple swing and static swing. ●...
  • Page 10 Function and Control TEMP button By pressing this button, you can see indoor set temperature, indoor ambient temperature or outdoor ambient temperature on indoor unit’s display. The setting on remote controller is selected circularly as below: No display ● When selecting "no display" on the remote controller, the temperature indicator which on the indoor units will display the set temperature.
  • Page 11 Function and Control QUIET button Press this button to turn on or turn off the QUIET function in cool、heat、auto mode. Note: ● Press "TURBO" or "FAN" button the unit will quit this function. ● This function is no use in fan mode or dry mode. ECO button In cool mode, press "ECO"...
  • Page 12 Function and Control Low temperature heating function setting ● In heating mode, pressing "Mode" and "+" button at the same time will enter/exit the low temperature heating function. ● "LA" would be showed on the remote controller after entered into the low temperature heating funtion. ●...

  • Page 13: Description Of Each Control Operation

    Function and Control 4.2 Description of Each Control Operation 4.2.1 The mainboard design with below function (1) Auto (2) Cooling (3) Dehumidifying (4) Air fan (5) Heating 4.2.2 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 14 Function and Control 4.2.6 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 (3) Health Indoor healthy function start when push healthy button.

  • Page 15: Installation Manual

    Installation Manual 5. Installation Manual 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 16 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 17: Selection Of The Installation Location

    Installation Manual 5.2 Selection of the Installation Location WARNING! or fall off. CAUTION! ● Do not install where there is a danger of combustible gas leakage. ● Children under 10 years old must be supervised not to operate the unit. (see table 1).

  • Page 18: Connection Pipe Requirement

    Installation Manual 5.3 Connection Pipe Requirement CAUTION! The maximum length of the connection pipe is listed in the table below. Do not place the units between which the distance exceeds the maximum length of the connection pipe. Size of Fitting Pipe (Inch) Max.height Difference between Indoor Unit Model Max.Pipe Length (m)

  • Page 19: Installation Of Indoor Unit

    Installation Manual 5.5 Installation of Indoor Unit Installing the indoor Unit 1. Recommend the installation location to the client and then confirm it with the client. Installing a hook Attach an installation cardboard horizontally to a wall. Make a mark on the wall according to the hole location indicated on the installation cardboard. On the top mounting holes, secure two hooks in locations 1 and 2.
  • Page 20 Installation Manual First, remove the screws on the upper panel to remove the upper panel, then remove the screws on the left and right panels to remove the left and right panels. Left side panel Upper panel Right side panel Bottom shell Right Side Panel Lower part 1...
  • Page 21 Installation Manual Put wiring cover back and then tighten the screw. Put back the cover and panel. Button Screw Clasp yellow- green Outdoor unit connection Clasp Note: ● All wires of indoor unit and outdoor unit should be connected by a professional. ●...

  • Page 22: Construction Views

    Construction Views 6. Construction Views Indoor Unit Units: mm...

  • Page 23: Exploded Views And Parts List

    Exploded Views and Parts List 7. Exploded Views and Parts List Indoor Unit...
  • Page 24 Exploded Views and Parts List Part Code Description SKVH09A-A3NA(I) SKVH12A-A3NA(I) Product Code KEZ001N0010 KEZ001N0020 Fan motor clamp board K10512093 K10512093 Overall hanging board K11008000 K11008000 Install the cardboard K40210029 K40210029 Chassis subassembly K11006181 K11006181 Fan motor wire cover K11027000 K11027000 Kaibang brushless DC motor K90206003 K90206003...

  • Page 25: 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 / PE Name COMPRESSOR 4-WAY VALVE ELECTRONIC EXPANSION VALVE PROTECTIVE EARTH ◆ Indoor Unit TUBE TEMP.

  • Page 26: Pcb Printed Diagram

    Schematic Diagram 8.2 PCB Printed Diagram Indoor Unit ● Top View Function Ground line connection Input port for null line and live line Communication line connection Display connection Tem.p sensor connection Step motor connection Fan motor connection...

  • Page 27: 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 status Code directly procedure 200s or direcly only after compressor stop 200s Filter cleaning reminder √...
  • Page 28 Troubleshooting Compressor stalling √ Outdoor See Diagram 4 See Diagram 4 Start up failure √ Outdoor See Diagram 5 See Diagram 5 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...
  • Page 29 Troubleshooting PFC current detection √ Outdoor The mainboard is broken Change the mainboard circuit error PFC protection √ Outdoor See Diagram 14 See Diagram 14 1. Check the outdoor unit 1. The outdoor unit valve is valve is open. close. 2.

  • Page 30: 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 31 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 32 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 33 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 fan terminals Check the Change fan motor Check the outside fan compressor stop capacity C1...
  • Page 34 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 35 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 36 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 37 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? ●...
  • Page 38 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 39 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 40 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 41 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 42: Troubleshooting For Normal Malfunction

    Troubleshooting 9.3 Troubleshooting for Normal Malfunction 1. Air Conditioner Can't be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting No power supply, or poor After energization, operation indicator isn’t bright If yes, wait for power recovery. If not, check power connection for power plug and the buzzer can't give out sound supply circuit and make sure the power plug is...
  • Page 43 Troubleshooting 4. ODU Fan Motor Can't Operate Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Wrong wire connection, or poor Check the wiring status according to circuit Connect wires according to wiring diagram to connection diagram Measure the capacity of fan capacitor with an Capacity of the ODU fan motor universal meter and fnd that the capacity is out of Replace the capacity of fan...
  • Page 44 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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