I've been all grain brewing for 2 years now and have never had this problem.. Just recently got a freezer and temp controller, just checked my 4th batch with the setup and stuck again, all 4 this one is an IPA, SG of 1.073 and dead stop at 1.030. My hef before this batch was OG of 1.053 and FG was 1.028. I don't know what is going on
On Tap: Caramel Ale, Mocha Porter II, MO SMaSH IPA Waiting/Carbonating: 12.5% Wee Honey II, 8.9% Old Ale, English Brown Ale, Lickah ESB, Mocha Porter II Fermenting K1: K2: Epic mead K3: TripSix On Deck: Caramel Ale Aging:mead Mead [bottled]:Oaked Wildflower Traditional, Mocha Madness, Blackberry Melomel, maple wine
What temp is your controller set to. Go put the carboy in a sink of warm water for a while after swirling the yeast to suspend them, that'll wake em up. Works for me. Then raise the temp a few on the freezer.
I had it in the low 60's due to the activity from the yeast, and raised it in order to keep the temp the same on the carboy, I just raised it to 70, thinking about pitching another vial of wlp001, I made a 2 liter starter for it