Inverter FAQ System
  • B110P300-2 Inverter broke down without output after long-time running

    2021-01-12 17:50

    Model

    BP series pure sine wave inverter 300W 110VDC 220VAC


    Description

    1. Inverter broke down without output after long-time running;
    2. Inverter was used in subway tunnel for a long time.


    Analysis of the possibility of the cause
    Runtime environment is terrible. Damp and dusty subway tunnel makes PCB board covered with thick soppy dust.
    1. Damp air partially short circuited PCB board, damaging components;
    2. Thick dust weakened heat dissipation, damaging components.


    Solutions and steps

    1. Pay attention to runtime environment, it would be better to place inverter in surroundings with lower moisture and less dust;
    2. If the surroundings cannot be improved, please put inverter into three protection and distribution box or similar box with good heat dissipation.

  • Input voltage 48V BP 3000W broke down after starting up

    2020-12-22 11:22

    Model

    BP series pure sine wave inverter 3000W 48VDC 220VAC


    Description

    1. Input voltage is 48V, under light condition and with no load;
    2. In above state, trouble light is on and buzzer keeps alarming.


    Analysis of the possibility of the cause
    According to description, the possible reasons are:
    1. DC voltage is low or at a critical point, so the inverter cannot be started;
    2. Components is void-welding so poor cotact occurs and the inverter cannot be started normally after transportation;
    3. The customer started the inverter with high power load which leads to the damage of MOS tube. And did not truthfully report the situation.


    Solutions and steps

    According to reason analysis, if the inverter could start after higher the input voltage, the trouble reason is the first.


     


    PS

    BP series starting voltage:
    DC12V, starting voltage≥13V;
    DC24V, starting voltage≥25V;
    DC48V, starting voltage≥49V.



  • The inverter fails after the three-circuit load is fully opened of BP Series 3000W

    2020-12-15 14:26

    Model

    BP series pure sine wave inverter 3000W 24VDC 220VAC


    Description

    1. Input DC 23V, Output AC221V, with 3.8A output current of two way load.
    2. Two of the three way loads can run normally. After the three-circuit load is fully opened, it will report a fault and stop output after about 10s.
    3. The back load is equipped with a lightning arrester. After removing the arrester on site, re-test, the fault is still consistent with the description of No. 2.
    4. The front DC power supplies power to the direct current cabinet. The customer did not provide any relevant data, means that the power is sufficient.
    5. Due to project reasons, it is not allowed to dismantle the installed inverter or send it back.
    6. After replacing a new inverter, the same situation still occurs.


    Analysis of the possibility of the cause
    According to the above description, the voltage and current of the input and output terminals are normal, and there is no overload. The possible cause analysis:
    1.When two of the back-end loads are in conflict with each other, such as a short circuit, the three loads will be all turned on, and the output will stop.
    2.The input power of the front power supply is insufficient, when the three loads are started at the same time, the front power supply is insufficient, which causes the stop of output.


    Solutions and steps

    1.Check the condition of back load circuit, whether there is short circuit, grounding, etc.or not.
    2.Check and measure the actual power of the front power supply.
    3.Remove the inverter and directly carry a sufficient load to test whether the inverter itself is normal or not.


     

  • No output after using for 2-3 months of B12P2000-2

    2020-12-08 14:29

    Model

    BP series pure sine wave inverter 2000W 12VDC 220VAC


    Description

    No output after using for 2-3 months, red and blue light are on at same time. 


    Analysis of the possibility of the cause
    1.The ambient temperature and humidity of the inverter is very high, because the BP series are equipped with fans, some particles with trace amounts of water will be sucked into the inverter, resulting in damage to the components in the inverter because of a short circuit of the CPU.
    2. If it is installed on a car, especially in the engine compartment or beside the battery compartment of a large truck, the ambient temperature around the inverter is high and water is easy to enter. The inverter is an electronic product and does not have the waterproof function. , As long as water enters the inverter, a short circuit will occur, resulting in damage of the inverter.
    3.For items with chemical components in the operating environment, if the inverter is installed too close, or the water inlet happens to heavy salt water entering for a long time, it will cause the PCB board to become moldy or salt spray crystals, which will lead to short circuit and damage.


    Fault Causes

    DC input part and AC output part mosfet broken.


    Solutions and steps

    Replace damaged components.


     



  • inverter no vac output and the error code is DCBUS-L by HeliosII

    2020-12-03 17:06

    Model

    HeliosII-485MCP off grid solar inverter

    Description

    inverter no vac output and the error code is DCBUS-L.

    Fault Causes

    1.customer connected on the output other voltage engine generstor


    Solutions and steps


    As illustrated in above image, the place marked by red box is the actual location of IPM module.

    The four points within the red ellipse are the points we need to measure.



    Measurement procedures: measure IPM module-using  multimeter, 

    and discharge white capacitance at first.

    1.Use black probe to connect 0 point, and use red probe to connect 1, 2, 3 point respectively. 

    The value of measurement should be more than 500 normally.



     2. Change black probe and red probe connection points. 

    Use red probe to connect 0 point, and connect 1, 2, 3 point 
    using black probe respectively. The value should be 1 under
     normal condition as shown below, in another words,
     exceeding multimeter’s measurement range.

    If check all display 0V, means AC output part Mosfet(IPM Module) damaged.

    Solutions

    1. Send back to factory to check

    2. change the Mosfet

  • The inverter did not output and had smell of burnt of B24P2500-2

    2020-12-01 14:14

    Model

    BP series pure sine wave inverter 2500W 24VDC 220VAC


    Description

    The inverter did not output and had smell of burnt. After opening, DC input part MOS tube and fuse exploded, and DC input control board was damaged.


    Fault Causes

    Mostly the battery was connected oppositely. 


    Solutions and steps

    Cannot be repaired.



  • AC output part MOS tube/IGBT module exploded of BP Series/ BPlus Series/ Helios II Series

    2020-11-24 10:26

    Model

    BP series pure sine wave inverter/ BPlus Series pure sine wave inverter/ Helios II Series off grid solar inverter



    Description

    AC output part MOS tube/ IGBT module exploded. AC output part driver board, corresponding resistances and PCB board were damaged.


    Fault Causes

    AC output was connected with grid.


    Solutions and steps

    Change MOS tube/IGBT module, AC output part driver board, damaged resistances and PCB board.


  • Damage AC output part MOS tube caused by overload of the inverter of BP/BPlus/Helios II Series

    2020-11-16 15:07

    Model

    BP series pure sine wave inverter/ BPlus Series pure sine wave inverter/ Helios II Series off grid solar inverter


    Description

    The inverter still ran even after short circuit because of a full load in AC output, which damaged AC output part MOS tube.


    Fault Causes

    The inverter still overloaded after short circuit/overload.


    Solutions and steps

    Change MOS tube.




    PS:

    If it is serious, MOS tube will explode as the image shows.



  • Capacitance bulged or exploded of BP Series/ BPlus Series/ Helios II Series

    2020-11-10 13:43

    Model

    BP series pure sine wave inverter/ BPlus Series pure sine wave inverter/ Helios II Series off grid solar inverter


    Description

    If the input voltage of battery exceeded defult value, capacitance will bulge/explode and further damage DC input part MOS tube.


    Fault Causes

    The input voltage of DC battery was too high.


    Solutions and steps:

    Change capacitance and MOS tube.



                            (Helios II Series)



    PS:

    Battery voltage of all models of inverter should not exceed values below:
    B12P--15.5V、B24P--31V、B48P--62V


  • The battery reverse cracks the fuse and the MOS tube

    2020-11-02 17:17

    Model

    BP series pure sine wave inverter


    Description

    The battery was connected oppositely, leading to blowout of fuse and damage of AC output part MOS tube. 


    Fault Causes

    The positive and negative pole of DC battery was connected oppositely. 


    Solutions and steps:

    Change fuse and MOS tube.



  • No output of BP Series pure sine wave inverter 12V 220V 1000W

    2020-10-26 15:02

    Model

    BP series pure sine wave inverter  1000W 12VDC 220VAC


    Description

    Red and blue lights come on after startup. The machine has no output and the battery voltage is 12.7V.


    Fault Causes

    The battery is short of voltage, thus the machine cannot start up.


    Solutions and steps:

    Increase input battery voltage.

  • Output voltage is unsteady of BPlus Series pure sine wave inverter 12V 220V 300W

    2020-10-19 14:30

    Model

    BPlus series pure sine wave inverter  300W 12VDC 220VAC


    Description

    The inverter can be started up but its output voltage is unsteady.


    Fault Causes

    R18 resistance in bus voltage has been damaged, the transient current is too large so the back end shortcircuits.


    Solutions and steps:

    Change R18 resistance.


  • Part components of the internal circuit board rusts of BP Series 12V 220V 600W

    2020-10-09 10:53

    Model

    BP series pure sine wave inverter  600W 12VDC 220VAC


    Description

    Cannot start the inverter up. Part components of the internal circuit board rusts.


    Fault Causes

    Water has got into the inverter or it was used in extremely humid surroundings. Both front-end and back-end MOS tubes have been damaged.


    Solutions and steps:

    Deliver it back to factory to take a complete inspection.


  • Front-end MOS tube and fuse exploded of BP series 48VDC 220VAC 2000W

    2020-09-28 10:17

    Model

    BP series pure sine wave inverter  2000W 48VDC 220VAC


    Description

    Front-end MOS tube and fuse exploded.


    Fault Causes

    Positive and negative of the battery power is opposite

    Or Battery voltage is too high


    Solutions and steps:

    Deliver it back to factory to take a complete inspection.



    If the problem can\\\'t solve, please contact us.

  • The inverter's buzzer keeps buzzing after being struck by lightning about BP series 4000W 48VDC 110VAC

    2020-09-24 13:45

    Model

    BP series pure sine wave inverter  6000W 48VDC 110VAC


    Description

    The inverter is normal after being struck by lightning, but its buzzer keeps buzzing.


    Fault Causes

    1. N3/R43 is damaged

    2. breakover/short circuit


    Solutions and steps:

    solution 1:

    1. Remove all wire from BP series with charge, include battery and AC output.

    2. Clear surface dust.

    3. Uninstall screws from Front and rear panels.

    4. Open the top cover.

    5. Find the damaged parts.

    6. Change U3, N6 parts.

    7. Close the top cover and run it.




    solution 2:

    1. Remove all wire from BP series with charge, include battery and AC output.

    2. Clear surface dust.

    3. Uninstall screws from Front and rear panels.

    4. Open the top cover.

    5. Find the damaged parts.

    6. remove the buzzer.

    7. Close the top cover and run it.




    If the problem can\'t solve, please contact us.

  • The device fails and stops outputting in seconds after running with load about BP series 12v 6000w

    2020-09-17 16:19

    Model

    BP series pure sine wave inverter 12v 6000w


    Description

    The device fails and stops outputting in seconds after running with load.


    Specific Performance: Inverter's front end has been connected with 5 batteries (aged batteries after using many years) in parallel, and its back end loads with electric welding machine. If welding machine's current is set as 176A, inverter can work normally, but if the current is 200A, the inverter fails to output.


    Fault Causes

    1. Battery has aged so that its output is unsteady. (Customers did not measure battery's voltage in adavance.)
    2. Output overloads. (200A output current of electric welding machine has beyond inverter's 6000W rated power.)


    Solutions and steps:

    Inverter is normal but misused.

    Replace the battery or reduce the load.


    If the problem can't solve, please contact us.

  • Charging current soars to 14A or even more with B12P2000 with charge

    2020-09-08 14:14

    Model

    BP series with charge pure sine wave inverter 12v 2000w


    Description

    Charging current soars to 14A or even more.


    Fault Causes

    This phenomenon is normal. Over-discharge causes the voltage of battery too low, so the charging current is higher than default value.


    Solutions and steps:

    Inverter is normal.

  • The cooling fan's problem with BP series with charge 12V 2000W.

    2020-08-31 10:01

    Description

    The cooling fan rotates slowly when only connected with mains supply, but rotates normally after being connected with mains supply and turning its switch on.


    Fault Causes

    The switch has not been controlled entirely by the control part of the cooling fan. There is something wrong with U3 optocoupler and N6 triode.


    Solutions and steps:

    1. Remove all wire from BP series with charge, include battery and AC output.

    2. Clear surface dust.

    3. Uninstall screws from Front and rear panels.

    4. Open the top cover.

    5. Find the damaged parts.

    6. Change U3, N6 parts.

    7. Close the top cover and run it.



    If the problem can't resolve, please contact us.

  • Muse series MPPT solar charge controller write parameter to reset

    2020-03-10 14:01

    change the parameter for Muse series MPPT solar charge controller by PC software( widnows 10)

    Battery type

    Over voltage(%)

    Over voltage value

    Lead-Acid

     120%

    57.6V

    Lithium

    114.1%

    54.7V

    Nicad

    111.0%

    53.3V

    Ni-metal

    121.7%

    58.4V

    User-Custom

    100%-125%

    48V-60V

    1.Different batteries have different over-voltage protection values. If the over-voltage values to high ,

    than the battery will broken, so must select the correct battery type.

    2. The Muse series MPPT solar charge controller are damaged

    If theMuse series MPPT solar charge controller have damage, need remove the controller asap, because the PV voltage will direct to

    battery, is very high voltage, than battery will damage.

    Accessories required: tablet computer *1, RJ45 communication line *1, USB to RJ45*1  

        

       

                           RJ45 communication line                                                                                                   USB to RJ45

    RJ45 communication lineconnected to the RJ45 interface RJ45 communication line is connected to the 485 interface of the Muse Mppt solar charge controller

             RJ45 communication line connected to the RJ45 interface       RJ45 line connected to 485 interface of the Muse Mppt solar charge controller

    The USB port connects to the computer (windows 10)

    The USB port connects to the computer(windows 10)

    Open the software "CNBOU"


    Open the software "CNBOU" app

     Click "Open file" and select "cnbou_mbt.xls"

    Select Port COM

    Select Port COM

    Click "Write Target" to bring up the bar code dialog box and click skip

    Click "Write Target" to bring up the bar code dialog box and click skip


     Popup please replace the target, operation completed, restart the controller


    Now the Muse series MPPT solar charge controller finish the parameter reset.

    Chinese and English interface comparison

  • DC or Battery input reverse solution for pure sine wave inverter B24P600-2

    2019-11-23 10:59

    DC or Battery input Reverse solution for Pure sine wave inverter B24P600-2

    Product and model: BP series Pure sine wave inverter/B24P600-2

    Fault description:Inverter running , LED lights off . AC output no power.

    Causes:DC or Battery Input Reverse

    Solution and step:

    1. Remove all wire from Pure sine wave inverter, include battery and AC output.

    2.Clear surface dust

    3.Uninstall screws from Front and rear panels


    4.Open the top cover


    5.Dial out the fuse

    6.Check and replace bad fuses

    7.Close and complete

    BP series 600W vehicle inverter