Hello! I have been having an issue with my charge controller that I have been unable to resolve. Any insight would be very much appreciated.
System (only what's relevant):
Issue:
I have been on the phone with renogy all week and haven't had much luck. So far, I have:
The only things I can think of are:
Thanks for reading this far! Really hoping someone is able to shed some light on this.
Cheers,
Noah
System (only what's relevant):
- Two, 300w 24v solar panels in series. 30 amp inline fuse before charge controller.
- 60 amp renogy rover MPPT charge controller that goes to a 40 amp fuse
- 12v lithium batteries
- *everything listed above is running on 10awg wire (using the same wire that came with the solar panels)
- smart battery monitor
Issue:
- Batteries charge like normal in the morning. Around mid-day (seems to be when I'm pulling 27+ amps), my charge controller goes into a strange cycle.
- It charges the battery (usually gets around 90% charged), shuts off (the charge controller doesn't show any warning lights, it just shows that it isn't receiving any sun), then turns itself back on.
- This cycle usually repeats every few minutes until either (1) the batteries are fully charged, or (2) I block the solar panels to reduce the incoming sunlight.
- Photo attached showing a few minutes of this on the battery monitor app. Absolutely no power is coming in at the low points. My batteries are just draining. I just didn't have much running when I took this photo.
I have been on the phone with renogy all week and haven't had much luck. So far, I have:
- checked for loose wires
- checked for hot wires. The wires coming out of the charge controller and going to the battery were warm, but not hot.
- messed around with the settings on the charge controller
- reset the charge controller
- scoured the internet for any similar issues... but have come up empty!
The only things I can think of are:
- There is an issue with my charge controller. Renogy said this may be the case. I'm under warrantee, so can swap it out if needed.
- Something with the wiring? Maybe I need to be using a higher gauge? That said, I don't know why this would cause the controller to shut off like this. I know 10awg wire isn't ideal, but I called renogy when I set this up; they didn't seem to think the 10awg wire would be an issue...
- Something going on with one of my fuses?
Thanks for reading this far! Really hoping someone is able to shed some light on this.
Cheers,
Noah
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