It appears there are 2 different Voyagers - Traveler Voyager and another "Voyager". Slightly different manuals. One says "120 minutes constant voltage Boost charge" (must be Absorb). Another one must be what you have, 2-4 hours Absorb and unclear current setpoint 0.2-1.0A. Both have some Chinglish issues - I think Renogy don't make or design their controllers, it's a relabeled mass product from China. No adjustments in either one, except for changing the Abs voltage by changing the battery type.
Good news (in your case) is that it was keeping battery at elevated voltage for hours. But you don't know this elevated voltage - it could be that it didn't reach 14.7 or only reached it for a few minutes before it timed out.
If you have nothing else to do you may get a two-mode Ecoworthy that BFL has :), and adjust Abs duration by setting and re-setting Float higher or lower depending on the weather. But it doesn't do 16.2 equalization.