If you cannot connect Wi Fi, please check as follows1. Confirm that the location permission and location service have been opened2. Confirm that the mobile phone is connected to the 2 4GHz band network3. Confirm that the current Wi-Fi is not a public authentication network4. Confirm that the Wi-Fi name and password meet the requirements5. Confirm that the router does not turn on advanced settings such as name hiding6. The device enters the networking mode7. Confirm that the current network is in good condition8. Number of router connected devices9. Other router settings

This video will show you the installation steps of LDSOLAR controller TD75V seriesSafety tools and protective equipmentInstallWiring and toolsBattery ConnectionSolar Panel ConnectionLoad ConnectionPower on the controller

The phenomenon that the load end of the controller cannot work normally and the handling methodThe system is connected normally, the controller shows normal charging, but there is no load discharge arrow icon, and the load bulb does not light up

After the system is connected, the controller indicator flashes slowly or does not flash.There is no charging indicator arrow on the LCD screen, and it is not charging normally at this time

Check the LCD screen, the warning icon and temperature icon flashPress the up key/menu key to come to the temperature display interfaceCheck that the current controller temperature is 83°,more than 75°Means that the controller is now over-temperature protected

Customer feedback Comments from Taobao about ldsolar TD75V Solar Controller

Battery overvoltage protectionThe controller is now in overvoltage protection stateThe battery is full and the warning sign flashes

This video uses MPPT series TD2307 to test how fast does the controller track the Max.power point when the sunshine changedBefore testing, we need to prepare a multi-meter and an ammeter to observe accurate data

Before testingWe need to prepare solar power generation simulation system and electrical parameter testerFor more accurate observation data

How to choose your right controller for your solar system-1How to choose PWM and MPPT controllerWhen choosing and using solar controllersDo you have any doubts as follows1.When choosing a solar controller, I don't know how to choose the right controller to match your solar panel.2.I don't know how to choose the suitable system voltage.3.When choosing MPPT controller, I do not know how the solar panels are connected in series or in parallel to ensure the maximum input voltage range allowed by the controller

As mentioned beforeIf PWM solar controller is selectedThe voltage of solar panel should match the voltage of controller and batterySo let's explain the knowledge of series and parallel connection

How to choose the right solar controller according to the power of the solar panelThe principle of selecting PWM controller is not to exceed the rated power of the controller. Secondly, the voltage of solar panel, PWM controller and battery must match