If your solar panel is not producing voltage, it could be due to issues with the solar charge controller. If the charge controller displays errors, zero power, or freezes, it might cause a no voltage problem. To fix it, try a soft reset first. If that doesn't work, proceed with a hard reset. Many electronic devices, including solar charge controllers, often benefit from a restart.
Another way Open Circuit happens is using more Load Voltage than panel voltage. As said earlier current always flows from high voltage to low voltage. When the voltage of your load (Load is something you connect to Solar Panel. Take Battery for Example) exceeds your panel’s volt current would not flow from the panel. It’ll be reversed.
If your solar panel, inverter and charge controller are not faulty, the most likely reason for no voltage output is poor connections. Use a multimeter to check the connection points at various areas of the solar system. You should get a reading if the connection is stable. Also look for signs of frayed or loose wires. There might also be a blown fuse somewhere.
1. Measure the solar panel controller output Voltage - try to get maximum voltage by angling the panels. It may be that you can never get more than 12 -13V 2. Measure the battery voltage. - hopefully it is less than the solar panel controller output voltage. 3. If it is proceed. 4.
Two common reasons for a solar panel to register no voltage are a faulty inverter or charge controller. Other possible causes include a damaged PV module, poor wiring, shading, and temperatures higher than the ideal operating range.
Your Solar Panel Circuit has a lot of equipment. One of the main pieces of equipment is Solar Charge Controller. Now if it is broken your entire circuit will be busted. In the worst-case scenario, the current will stop flowing. Thus there will be zero amps despite voltage. Usually, low-quality charge controllers have this problem.