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Old 08-02-2012, 04:46 PM   #1
Oct 2011
Yellowknife, North West Territories
Posts: 39

So I have a 2 stage ranco controller and a mini freezer. I made sure the settings were correct the first time I used it and had 2 successful brews. So this time I noticed the temp on the controller was where it was supposed to be but the ambient temp in the freezer was like 40f! Also the freezer is practically new but you could feel on the side of it was very hot.

So there are 2 female plugs, one that the freezer goes into and one that the fermwrap does. I reversed the plugs in the evening and came to look in the morning and both the ambient and fermenter temp was 100f!! this yeast is wyeast 2112 so I'm thinking I'm pretty much screwed?

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Old 08-02-2012, 04:55 PM   #2
Sep 2011
Katy, TX
Posts: 185
Liked 15 Times on 10 Posts

RDWHAHB. Yeast have been around for millions of years. They will survive. They will make beer.

It just may not taste very good.

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Old 08-02-2012, 05:12 PM   #3
TopherM's Avatar
Mar 2011
St. Petersburg, FL
Posts: 3,974
Liked 450 Times on 355 Posts

Yeast start to be debilitated starting at around 120F and start to die at around 140F.

They will be fine at 100F. They were probably pretty close to that temp in the back of the FedEx truck they were shipped in.

You will, however, be dealing with some off-flavors in the brew due to the higher temp. Good news is that these types of off flavors from strained yeast can be conditioned out, given enough time. You may want to allow an extra 4-6 weeks of conditioning time if you have some funky aftertastes in this batch.

Good luck!
Primary #1 - Midnight Ryeder (Midnight Wheat and Rye)
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Secondary #1 - Downtown Flanders Brown (brewed August 2012)
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