Brew went flat

[HawaiianBrew]

Ok this has never happened before. I've had this honey ale in a keg fully carbonated, and when I just recently raised the temp of my keezer to 65 degrees from 38 degrees the keg it's self lost carbonation. I raised the temp to brew up a dark mild. Is the beer lost or can I get it back while holding this temp?

 

[gcdowd]

At higher temps, CO2 well come out of solution. You need to crank the pressure up. There's a nice chart out there somewhere that shows volumes of CO2 based on pressure and temp. Google it