GZ Yeti 6000 not charging from solar - works fine using the Link, wall charger

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hgpilot
hgpilot Member Posts: 3 ✭✭

I've got a 6000 installed in a Sprinter - charging works great from the Yeti Link (when vehicle is running) and AC wall charging - but when plugging up my Boulder 100, I get nothing. Latest firmware, at 85% and in performance mode. I know my panels are working (I have a handheld MPPT tester with an 8mm adapter for the GZ panels) but the Yeti just won't take a charge from solar - either from the front input port or the one under the hood. It's been like this for awhile but since 99% of the time I'm taking a charge from the vehicle / link, it's not been a problem. Any ideas on where to troubleshoot first?