guitarmikeb
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- Joined
- Feb 22, 2013
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I borrowed a Johnson Controller A419 from a friend to try my hand at a lager. I'm using it in a 5cf chest freezer. The wort is in a fermenting bucket with a blowoff tube installed. The temp probe for the controller is in a bottle of water (probe suspended not touching sides of container, and is located directly beside the fermenter). The setpoint is at 54. I go out and look and the temp reading on the controller is reading 45. WTF? The differential is set to 2 degrees, the ASD is set 5 mins. Regardless of how this thing is setup with the jumpers (ie..cut in/cut out) it shouldn't be down to that low of a temp correct? The chest freezer is located on my back porch and is subject to the environmental temp swings. When I started it around 6pm this evening the temp display read 58.