MPPT PV low amp issue

Solar Panels
1

Hello all I have 380watt Tesla solar panel and epever mppt. My solar panel stop working after 3,4 days. When I disconnect pv wire and reconnect then it’s work again. It’s show correct voltage but 0 amps and 0 watt please see the screenshot and help me to solve the issue. It’s difficult to connect and reconnect solar wires twice in week. 2 images. One show zero wattage and after disconnecting and reconnecting the panel work which is shown in the picture. Is this panel divodes issue or mppt issue

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2

That is very strange. Is this happening on very days with high temperature? Maybe the MPPT is getting too hot. Do you have a disconnection switch or DC circuit breaker to help?

3

It’s happening after 3,4 days there is no issue or temperature my mppt supper upto 138v and 40A. My panel is 36v and 8,9Amp. Battery temperature is also 29C. I brought 200watt panel of my cousin to check with this Panel. If still same issue then it’s mean mppt issue. If didn’t happen again then solar panel divode or wire issue. Tomorrow I will change panel. but look like mppt issue. It’s pv power goes on stand by . At afternoon time

4

What type and size battery are you using? What are the battery charge settings? Does it have a maximum absorption charge time setting and a rebulk setting?

5

My battery is 280A 12v. Images attached of mppt controller sitting

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6

It seems like there could be a few potential issues causing this problem. Here are some troubleshooting steps you can try:

  1. Check PV Wire Connections: Ensure that the PV wire connections are secure and free of any corrosion or damage. Loose connections can cause intermittent issues like the one you’re experiencing.

  2. Check for Shade or Debris:Make sure that the solar panel is not shaded or obstructed by debris such as leaves or snow. Even partial shading can significantly reduce the panel’s output.

  3. Check MPPT Settings:Verify that the settings on your Epever MPPT controller are configured correctly for your solar panel’s specifications. Refer to the user manual for guidance on setting up the controller.

  4. Update Firmware: Check if there are any firmware updates available for your Epever MPPT controller. Updating the firmware can sometimes resolve compatibility issues and improve performance.

  5. Check Panel Diodes: If the issue persists, there may be an issue with the panel’s bypass diodes. These diodes prevent the entire panel from shutting down if one section is shaded or damaged. A technician can test and replace the diodes if necessary.

If none of these steps resolve the issue, it may be helpful to consult with a professional solar technician or contact the manufacturer for further assistance.