Paul is correct, if your green/red light are on together, there's something wired wrong. It should take about 12 hrs to get from red to float (green) the first time you plug it in. All of this is assuming you bought the 10 amp 2611.
I simply wire them to use the 12v function by charging two sets of batteries (that's 4 batteries) hooked in parallel by the two Guest leads that in turn charge all four batteries.
Forget what I have done if your confused and stick with Mango's deal, but you have something wrong if your green/red.