Hi - My unit hasn’t been charging for the last few days- I have 20v+ from the panel - and the battery is at 12.4v
What is odd when I updated the firmware it started charging until the software update completed - Any ideas ?
I’d say try doing a reset to defaults, then re-entering the unit’s programming for your system.
FW updates can occasionally bork normal operation, whether due to bug or just due to resetting of settings, which is (part of) why it’s recommended to never update a properly functional system.
There are also a bunch of things to check in the Troubleshooting section of the user and installation manual: 8. Troubleshooting