20 Amp 12/24/48V MPPT Solar Charge Controller

Note:

* If you need this charge controller for charging the lithium battery, please contact us in advance and provide us the parameters of your lithium battery including equalize charge voltage, float charge voltage, maximum charge current, end-of-discharge voltage, and recovery voltage, so as to help you choose a most suitable charger controller.

MPPT Solar Charge Cotroller User Manual

What is the troubleshooting of the solar charge controller of off-grid solar system?

Check for Error Codes or LED Indicators

• LED Indicators: Many 12v mppt solar charge controllers have LED lights that indicate the status of the system. Check the manual to see if any lights are flashing in a particular pattern that indicates an issue.
• Error Codes: Some advanced solar charge controllers may display error codes on a screen or via LEDs. Refer to the user manual for specific error code meanings.

Inspect Wiring and Connections

• Loose or Corroded Wires: Loose, corroded, or improperly connected wires are one of the most common issues. Ensure all connections are tight and clean.
• Solar Panel to Controller: Check that the wires from the solar panels to the mppt solar charger are properly connected.
• Battery Connections: Ensure that the battery terminals are clean and connected securely.
• Load Connection: If there is a load connected to the mppt solar regulator, make sure the wires are properly attached.

Check Battery Voltage

• Low or Dead Battery: If the battery voltage is too low (below the charge controller's minimum voltage), the controller might not operate properly.
• Voltage at Battery Terminals: Use a multimeter to check the voltage directly at the battery terminals and compare it with the controller's specifications. A typical 12V system should show between 12V and 14V when charging, depending on the battery's state.