Frustrated because your solar controller isn’t operating as it should? Consider performing a reset as the straightforward remedy you need. In our blogpost, we guide you through the steps for both soft and hard resets to assist in getting your solar system back to optimal performance.

Discover how to troubleshoot like a pro, understand when a reset is necessary, and learn simple resetting techniques. Keep reading to find out how easy it can be!

Understanding Solar Controllers

A person adjusts solar controller settings with panels in natural setting.

Solar controllers are like smart managers for your solar power system. They decide how to charge the battery best and protect it from getting too full or empty. These devices watch over the energy coming from your solar panels and direct it so that your batteries stay healthy for a long time.

There are two main kinds of solar controllers: PWM (pulse width modulation) and MPPT (maximum power point tracking). The PWM is simpler and cheaper but doesn’t get as much power out of the panels.

On the other hand, an MPPT controller is better at turning more sunlight into usable electricity, which means you can use fewer panels for the same amount of energy.

Common Problems with Solar Controllers

A man inspects solar controller connections in an industrial workshop.

Sometimes solar controllers have trouble because the battery voltage gets too low. This can happen when there isn’t enough sunlight or if something is wrong with the batteries. Another issue people find is that the controller turns off the power to keep things from getting damaged.

If this happens, you might need to check connections or make sure nothing is using too much power.

Glitches in the software of solar controllers are also not unusual. These glitches can mess up how well your system works. When updates for the controller’s firmware fail or other short-term problems crop up, resetting your solar controller might fix these issues without needing an expert’s help.

When Should You Reset Solar Controllers?

You should reset your solar charge controller if it stops working right. This could mean the screen shows errors or nothing at all, lights are blinking in a strange way, or it’s not charging the battery like it should.

If you push the reset button and still have trouble, that’s another time to try resetting.

If your PWM controller gives you problems, try holding down its reset button for a few seconds. When you update the firmware and things don’t work after that, do a reset. Also, if you change how your power system is set up by adding more panels or batteries, resetting helps make sure everything works well together.

How to Reset Solar Controllers

To reset your solar controller, you can either perform a soft reset by rebooting the system or a hard reset to restore it to its factory settings. Make sure to follow the correct process for your specific model to ensure proper functionality.

Soft Reset Process

To perform a soft reset on your solar controller, follow these steps:

  1. Disconnect the battery and solar panels from the charge controller to ensure no power source is connected during the reset process.
  2. Wait for a few minutes to allow any residual charge to dissipate from the system.
  3. After waiting, reconnect the battery and then connect the solar panels back to the charge controller.
  4. The soft reset process simply reboots the system without altering any settings, helping to resolve minor issues without losing any programmed data.
  5. Performing a soft reset can help troubleshoot problems and restore normal operation to your solar charge controller without requiring extensive technical expertise or tools.

Hard Reset Process

To perform a hard reset on a solar charge controller, follow these steps:

  1. Turn off all power sources connected to the solar controller, including the photovoltaic panels and battery backup systems.
  2. Use a multimeter to ensure that there is no input voltage present at the controller.
  3. Disconnect the batteries from the charge controller by removing the battery wires.
  4. Wait for approximately two to five minutes before reconnecting the battery wires to the charge controller.
  5. After reconnecting, check if any firmware update is needed for the solar controller.
  6. Power up the system and verify that all parameters are functioning correctly as per manufacturer specifications.

Is a 100-Watt Solar Panel Enough for Your RV? Understanding Your Solar Controller’s Capacity

To ensure that a 100-watt solar panel is adequate for your RV, it’s crucial to understand your solar controller’s capacity. The size of the charge controller required for a 100-watt solar panel can vary.

Some sources recommend a 10-amp controller, while others suggest 7.5 amps for every 100 watts. Additionally, when sizing a solar charge controller, considering the open-circuit voltage of the panels and the number of panels in series is vital to determine the appropriate controller size.

A complete RV solar system with batteries requires careful consideration of the solar charge controller’s capacity to ensure optimal performance and efficiency.

Understanding your specific requirements and the capacity of your RV’s solar controller is essential in determining if a 100-watt solar panel is sufficient for your needs.


Resetting your solar controller is a simple process that can help troubleshoot common issues. Whether it’s holding the reset button or following specific instructions for your model, taking the time to reset the controller as needed ensures optimal performance of your solar power system.

Understanding when and how to reset your solar controller will help you make the most out of your renewable energy setup. Don’t hesitate to refer to the user manual for detailed guidance on resetting your specific model of solar charge controller.


Why would I need to reset my solar controller?

You might need to reset your solar controller if it’s not working right or if you want to clear its electronic communications memory.

How do I safely reset my solar controller?

To safely reset your solar charger, turn off the power supply and disconnect any extension cords before pressing the reset button on your device.

Can resetting affect my feed-in tariff earnings?

Resetting should not mess up your feed-in tariff because it just restarts the MPPT algorithm without changing how much energy you send through transmission lines to the internet or grid.

If I have multiple panels connected in parallel, will resetting one charge controller affect others?

No, if you have several panels connected in parallel with separate controllers, resetting one shouldn’t impact any other controllers or panels in your setup.

Leave a Reply

Your email address will not be published. Required fields are marked *