How long has it gone before the heat was turned up? If fermentation was done you should not have too much bad going on. If it was at the height of fermentation you might have some problems. How bad will only be found out by riding it out to see.
The one in it's third week should be ok if you've used a forgiving strain of yeast. The one in it's first week might or might not be ok. At the worst, the yeast will have stressed and produced some phelonic (plastic, cough syrup) flavors or some estery components (banana, bubblegum, clove).
Rye pa three weeks white labs California ale yeast and dunkel at 1 week with white labs wlp300 hefe yeast. So if it does stress the yeast out in my one week batch it could end up as a good thing. I do love them banana phenols