Amazing how much materials and space is wasted by the clowns at Dutchmen.
How the hell did you get WFCO to take your unit back? They kept insisting that I had to have mine taken out and replaced by an "authorized" service center. I finally figured that the less than $200 for the PD unit was money well spent and told WFCO where to shove it. From what I have heard from several reliable sources is they will almost always deny warranty unless you push the issue, and it takes them 4-6 weeks to make up their minds. Customer service ain't their forte. FWIW I got my PD from BestConverter
. Their service was outstanding and so far the PD unit is doing a much better job than the WFCO. I have tested it and it works in all four stages. I could never get the WFCO to kick over to bulk mode, even with the battery at a 50% discharge.