Skyworth SKVH09A-A3NAI Service Manual Download Page 1

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MODEL
SKVH09A-A3NA(I)
SKVH12A-A3NA(I)

(Refrigerant R32)

Summary of Contents for SKVH09A-A3NAI

Page 1: ...MODEL SKVH09A A3NA I SKVH12A A3NA I Refrigerant R32 ...

Page 2: ...5 2 Selection of the Installation Location 15 5 3 Connection Pipe Requirement 16 5 4 Electrical Requirement 16 5 5 Installation of Indoor Unit 17 6 Construction Views 20 7 Exploded Views and Parts List 21 8 Schematic Diagram 23 8 1 Electrical Wiring 23 8 2 PCB Printed Diagram 24 9 Troubleshooting 25 9 1 Error Code List 25 9 2 Procedure of Troubleshooting 28 9 3 Troubleshooting for Normal Malfuncti...

Page 3: ...ntroller SKVH09A A3NA I SKVH12A A3NA I TIMER TIMER ON LIGHT ECO QUIET CLOCK I FEEL OFF HEALTH CLEAN TEMP MODE FAN TURBO SLEEP Cooling mode Heating mode ON OFF Receiving window Power display Temp display Horizontal louver Filter Air inlet Air outlet Panel Air outlet Display ...

Page 4: ... the site after installation Make sure no foreign objects are left in the unit Always ensure effective grounding for the unit Incorrect handling could result inpersonal injury or death Incorrect handling may result inminor injury or damage to product or property Warning Caution Warning Caution All electric work must be performed by a licensed technician according to local regulations and the instr...

Page 5: ...ng refrigerant with no harm to the ozonosphere The influence upon the greenhouse effect is also lower R32 has got very good thermodynamic features which lead to a really high energy efficiency The units therefore need a less filling The Refrigerant WARNING Do not use means to accelerate the defrosting process or to clean other than those recommended by the manufacture Should repair be necessary co...

Page 6: ...0 550 500 Fan Motor Power Output W 30 30 Evaporator Form Aluminum Fin copper Tube Aluminum Fin copper Tube Evaporator Pipe Diameter mm φ7 φ7 Evaporator Pipe Diameter inch φ0 275 φ0 275 Evaporator Row fin Gap mm 1 4 1 4 Evaporator Row fin Gap inch 0 055 0 055 Evaporator Coil Length L D W mm 530 25 4 400 530 25 4 400 Evaporator Coil Length L D W inch 20 8x1 0x15 7 20 8x1 0x15 7 Set Temperature Range...

Page 7: ...play of remote controller If timer on timer off and light functions are set the corresponding icons will be displayed on the display of remote controller at the same time TIMER TIMER ON LIGHT ECO QUIET CLOCK I FEEL OFF HEALTH CLEAN TEMP MODE FAN TURBO SLEEP Turbo mode Health function Send signal Set fan speed Child lock Sleep mode Up down swing Light Temperature diaplay Auto mode Cool mode Dry mod...

Page 8: ...r starting up heating mode indoor unit will delay 1 5 minutes to blow air actual delay time is depend on indoor ambient temperature Set temperature range from remote controller 16 31 C Fan speed auto fan1 fan2 fan3 fan4 fan5 stepless speed Auto Cool Dry Fan Heat ON OFF button Press this button can turn on or turn off the air conditioner FAN button Pressing this button can set fan speed circularly ...

Page 9: ... selecting will stop at that position as shown by the icon to swing When selecting it s the circulating swing Left right swing louver of air conditioner will swing circularly according to the angle as shown by the icon Note There is no this function for the units If press this button the main unit will sound but it also runs under original status HEALTH button Press this button to turn on or turn ...

Page 10: ... remote controller blink Press or button within 5s to set TIMER OFF time Each pressing of or button the time will increase or decrease 1 hour Press this button again OFF and icon on remote controller will blink Press or button within 5s to set the time Press this button another time OFF and icon on remote controller will blink Press or button within 5s to set the time will stop blinking icon resum...

Page 11: ...for indoor unit s display icon on remote controller will disappear Press this button again to turn on the light for indoor unit s display icon on remote controller will be displayed In the heating mode press SLEEP and TURBO buttons together for 3s would start or cancel the Timing defrost Timing defrost The minimum cooling temperature setting In the off mode pressing TEMP and button at the same tim...

Page 12: ...emperature heating function After powered on the low temperature heating mode was default to off status In the low temperature heating mode Sleep and Low temperature heating function cannot start at same time When low temperature heating mode has already started meanwhile you press the SLEEP button the air conditioner will exit low temperature heating mode and enter the sleep mode Vice versa Note ...

Page 13: ...ing temperature will reach 25 degree 2 When the environment temperature i is equal or below 19 degree plus additional temperature it will run in heating mode and the setting temperature reach 20 degree at that time entering auto mode It will run in original mode if it change from cooling and heating mode If original mode is dehumidifying it will be in airfan after change into auto mode 4 2 5 Prote...

Page 14: ...tton at the same time in heating mode it will show LA 7 Environment temperature push temperature button it will show environment temperature 5s and the setting temperature 8 Outdoor power Power on outdoor power is off 9 When unit is on except for fan mode outdoor power supply input high frequency 10 Entering off mode or fan mode outdoor power is off after 4 minutes 11 1W Standby 4 2 7 Display 1 Ba...

Page 15: ...6 1 7 0 7 9 8 9 10 0 11 2 12 4 13 6 15 16 3 17 8 19 3 wall mounted 1 6 1 9 2 1 2 4 2 8 3 1 3 4 3 8 4 2 4 6 5 5 5 6 0 ceiling mounted 1 1 1 3 1 4 1 6 1 8 2 1 2 3 2 6 2 8 3 1 3 4 3 7 4 0 5 1 3 Maintenance notes Check whether the maintenance area or the room area meet the requirement of the nameplate It s only allowed to be operated in the rooms that meet the requirement of the nameplate Check whethe...

Page 16: ...d cause pressure rise or compressor rupture resulting in injury 4 During refrigerant recovery make sure that liquid valve and gas valve are fully closed and power is disconnected before detaching the connection pipe If compressor starts running when stop valve is open and connection pipe is not yet connected air will be sucked in and cause pressure rise or compressor rupture resulting in injury 5 ...

Page 17: ...ildren 7 The application must be installed 0 1 to 0 2m above floor Please try your best to keep away from flourescent lamp 8 The location should be ableto withstand the weight of indoor unit and won t increase noise and vibration 9 An indoor unit should not have a height difference greater than 10 m with an outdoor unit and the connection pipe should not be more than 15 m long Note There will be l...

Page 18: ... located on the main board 2 Install the disconnect device with a contact gap of at least 3mm in all poles nearby the units The appliance must be positioned so that the plug is accessible amps of the unit copper cable consisting of PE insulated wires and a PVC cable jacket used at 40 С and resistible to 90 С see IEC 60364 5 52 6 Take 2 pieces of power cord of 0 75mm2 as the communication lines bet...

Page 19: ...ugh a wall hole and also to avoid damage caused by rats in a hollow wall install a wall pipe Seal the wall hole on the inner and outer sides with sealant 3 The highest point of the wall hole cannot exceed the bottom of a wall mounted AC to prevent water leakage Notice Pay attention to dust prevention and take relevant safety measures when opening the hole The plastic expansion particles are not pr...

Page 20: ...r pipe and joint of connection pipe with insulating pipe and then wrap it with tape insulating pipe 6 Install drain hose 1 Connect the drain hose to the outlet pipe of indoor unit 2 Bind the joint with tape drain hose tape outlet pipe drain hose insulating pipe Add insulating pipe in the indoor drain hose in order to prevent condensation The plastic expansion particles are not provided 6 Connect w...

Page 21: ...ing cover back and then tighten the screw 6 Put back the cover and panel 3 Bind them evenly 4 The liquid pipe and gas pipe should be bound separately at the end Note The power cord and control wire can t be crossed or winding The drain hose should be bound at the bottom Outdoor unit connection L N S yellow green Button Screw Clasp Clasp 8 Band up pipe 1 Bind up the connection pipe power cord and d...

Page 22: ...20 Construction Views 6 Construction Views Indoor Unit 600 700 215 Units mm ...

Page 23: ...21 Exploded Views and Parts List 7 Exploded Views and Parts List Indoor Unit ...

Page 24: ...shless DC motor K90206003 K90206003 1 7 Air ring assembly K10541030 K10541030 1 8 Top bottom wind casing K10541031 K10541031 1 9 Filter K10504000 K10504000 1 10 Panel assembly K10554003 K10554003 1 11 Mask assembly K10541032 K10541032 1 12 Bottom wind casing K10541033 K10541033 1 13 Evaporater assembly K20210105 K20210105 1 14 Centrifugal rotor K10512101 K10512101 1 15 Solid pipe clamp K10201024 K...

Page 25: ...VE PROTECTIVE EARTH Meaning of marks Indoor Unit These circuit diagrams are subject to change without notice please refer to the one supplied with the unit WIND UD1 M θ θ TEMP YENG CHOICE 15K 20K EVAPORATOR 1 2 WIND UD2 M M DC FAN 2 3 BN BK BU COM OUT AC N AC L 485 WIFI 485 OPTIONAL DISP MAIN BOARD PE PE N 1 YENG DISPLAY K45318142 PE OUTDOOR UNIT YENG TUBE TEMP SENSOR ROOM TEMP SENSOR STEPPING MOT...

Page 26: ...Indoor Unit No Function 1 Ground line connection 2 3 Input port for null line and live line 4 Communication line connection 5 Display connection 6 Tem p sensor connection 7 8 Step motor connection 9 Fan motor connection Top View 9 8 7 5 6 2 3 4 1 ...

Page 27: ... overload compressor need to limit the frequency or frequency reduction operation The normal limit frequency reduction function d5 IPM temp limit down Outdoor The compressor module temperature is too high compressor need to limit the frequency or frequency reduction operation The normal limit frequency reduction function E0 High discharge temp protection Outdoor See Diagram 1 See Diagram 1 E1 Over...

Page 28: ...Indoor fan motor error Indoor See Diagram 10 See Diagram 10 L3 Indoor display communication between Indoor and Outdoor failure Indoor See Diagram 11 See Diagram 11 L4 Select the port level abnormal error Indoor The mainboard is broken Change the mainboard L5 Indoor EEPREM error Indoor See Diagram See Diagram L6 Outdoor display communication between Indoor and Outdoor failure Outdoor See Diagram 12...

Page 29: ...al between the temperature sensor and the mainboard loosened or poorly contacted 2 The sensor is broken 3 The mainboard is broken 1 Check the wiring terminal 2 Change the sensor 3 Change the mainboard U3 Outdoor mid coil temp sensor short open Outdoor 1 The wiring terminal between the temperature sensor and the mainboard loosened or poorly contacted 2 The sensor is broken 3 The mainboard is broken...

Page 30: ...oblem solved Problem solved N N Y Y Y Y Y Y End Outdoor motor abnormal speed Under Cooling mode Resolve rotate speed problem Outdoor abnormal intake Under Cooling mode Resolve air inlet problem Change a temp sensor The system is normal but the compressor exhaust room temperature sensor resistance value is abnormal N N N N N N Change Mainboard Diagram 1 ...

Page 31: ...ion environment of unit Indoor and outdoor unit heat radiating is poor Indoor and outdoor motor work well 1 Checking the fan terminals connect well or not 2 Checking the motor of Indoor and Outdoor Unit is well or not Change the motor capacity C1 Checking the pipe temperature sensor is normal or not comparing pipe temperature sensor resistance table Checking the temperature of out pip while coolin...

Page 32: ...nnected Use ohmmeter measuring the overload protector resistance at ambient temp 1000 Ω resistance Check the electronic expansion valve coil is installed on the valve body correctly Change overload protector SAT Check the electronic expansion valve body is block or not The fault is clear Check the refrigerant situation please add refrigerant according to the technical specification when leakage ha...

Page 33: ...d Connected wires End Change Compressor Errors declared Change control board AP1 Over fill refrigerant The input voltage setting is normal The unit heat dissipation is bad Step out during the operation Check the outside fan motor is normal Check the fan terminals OFAN is connected Change fan motor capacity C1 Change outside fan motor Improve heat dissipation for unit such as heat exchanger clearan...

Page 34: ...p after 3 minutes Are the wires for the connection sequence right Replace the control panel AP1 If the fault is eliminated Replace the compressor 3 minutes End compressor connected correctly Is If the fault is eliminated If the fault is eliminated Refer to the Electrical Wiring Diagram and check if the connection between AP1 and COMP is loose and if the connection order is correct Whether refriger...

Page 35: ...stem pressure becomes too high The connection of capacitor C2 is loose Reconnect the capacitor C2 according to Electrical Wiring Diagram Then Restart the unit Stop the unit and disconnect the power supply Wait 20 minutes or use DC voltmeter to measure the voltage between the two ends of capacitor C2 until the voltage is lower than 20V Replace the capacitor C2 Then energize and start the unit Repla...

Page 36: ...alfunction diagnosis process Start Is there jumper cap on the mainboard Is the jumper cap inserted correctly and tightly Replace the jumper cap with the same model Assemble the jumper cap with the same model Insert the jumper cap tightly Is malfunction eliminated Is malfunction eliminated Is malfunction eliminated Replace the mainboard with the same model End Y Y Y Y Y N N N N N ...

Page 37: ...he connection of PG Turn on the unit again measure whether the output voltage on control terminal for PG motor is more than 50V within 1 min after the louvers are opened Tighten the screw reassemble the blade motor and shaft bearing rubber base sub assy to make sure there is no foreign object between them Y Y Y Y Y Y Y Y Y Y N N N N N N N N N Is malfunction eliminated Is malfunction eliminated Is ...

Page 38: ...ical box is normal Check the connecting cables connected to the indoor and outdoor unit properly by the wiring diagram Check the outdoor unit communication circuit See the Troubleshooting Method Fault declared Fault declared Fault declared Problem with the communication circuit Change the indoor unit main board Change the outdoor unit main board AP1 End Start Main check points Test the indoor and ...

Page 39: ...Numerical change Numerical change Use the Tesr 15 position to test voltage values by voltmeter Numerical change Use the Tesr 10 position to test voltage values by voltmeter Numerical change Outdoor unit communication circuit detection is normal Outdoor unit error End Outdoor unit communication circuit detection process as follows outdoor unit key test points ...

Page 40: ...is clear The fan motor and wind speed are operating normally or the fan speed is low or stop The compressor is operating normally check the noise oil leakage body temperature etc Solved the compressor abnormal operation problem Check the motor and re install motor in order to make fan motor operating normal Solved system internal blockage problem Check the system Error declared Error declared Erro...

Page 41: ...e or short circuit Replace it as per the wiring diagram and reconnect the wires If the fault is eliminated Remove the PFC capacitor and measure resistance between the two terminals Is the resistance around zero The capacitor is short circuited and the capacitor should be repla ced Restart the unit If the fault is eliminated Disconnect the terminals for the reactor and measure the resistance betwee...

Page 42: ...oor unit is improper Check whether the installation postion is proper according to installation requirement for air conditioner Adjust the installation position and install the rainproof and sunproof for outdoor unit Refrigerant is leaking Discharged air temperature during cooling is higher than normal discharged wind temperature Discharged air temperature during heating is lower than normal disch...

Page 43: ...d Compressor can t operate Repair or replace compressor 6 Air Conditioner is Leaking Possible Causes Discriminating Method Air conditioner Status Troubleshooting Drain pipe is blocked Water leaking from indoor unit Eliminate the foreign objects inside the drain pipe Drain pipe is broken Water leaking from drain pipe Replace drain pipe Wrapping is not tight Water leaking from the pipe connection pl...

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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