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Steps to Reset a Solar Charge Controller — What Should I Know?

May 8, 2026

Quick Answer

To reset a solar charge controller, locate the reset button or switch, usually found on the front or top of the unit. Press and hold the button for 2-3 seconds, then release. This process clears any error codes and restarts the controller.

Understanding Error Lights and Faults

Error lights on a solar charge controller indicate various faults, including temperature issues, voltage faults, and charging problems. Typically, a single LED or multiple LEDs light up to signal different errors. For instance, a steady red light may indicate a temperature fault, while a blinking red light might indicate a voltage fault. Refer to the user manual or manufacturer’s documentation to decipher the specific error codes and their meanings.

Locating the Reset Button

The reset button or switch is usually located on the front or top of the solar charge controller. It’s essential to identify the correct button or switch to avoid accidental damage. Some controllers have a push-button reset, while others have a slide switch or a button with a label. Consult the user manual or online documentation to locate the reset button on your specific controller model.

Resetting the Charge Controller

To reset the solar charge controller, press and hold the reset button for 2-3 seconds. Release the button, and the controller will restart and clear any error codes. Some controllers may require a longer press (5-10 seconds) or a specific sequence of button presses. Always follow the manufacturer’s instructions for resetting the charge controller. If the controller is still malfunctioning after a reset, it may indicate a more severe issue, such as a faulty component or improper installation.

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