Chris_Dog

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I have a few month old chest freezer converted to a keezer. (Johnson Temp. Controller). It is 50° even though the Controller is set at 40°. The odd thing is that it is cycling like normal.
I will unplug the Temp controller right now and see if I can isolate whether it is the freezer or controller. (Just typing this out I am thinking that it is the controller).

Cheers!!!

Rhoobarb

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Where do you have the freezer's temp control set. Should be on 'high'.

Chris_Dog

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I was thinking of what I have changed recently. I inserted the probe end of the controller into a glass of water. In hopes that it would make the freezer cycle less. Any chance this would make the controller read incorrectly?

Chris_Dog

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It is... let me say this is a recent problem. The keezer has always kept it's temprature prior to this problem.

ColoradoXJ13

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My johnson (sorry) controller always seems to be 10*F higher than the freezer...I just keep that in mind when adjusting the controller.

BierMuncher

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I never trust the controller dial.

I placed my controller probe and digital thermometer probe together in the bottom of the keezer. When my digital probe read my desired temp, I turned the dial slightly to shut off the controller.

Them I kept the therm probe in there for a few days to make sure I didn’t need to tweak it any further.

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david_42

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Chest freezers do not cycle much when used as keggers, I've got one running as a kegger and one as a freezer & the kegger cycles about 1/2 to 1/5th as often depending on the brewery temperature. I'd take the probe out of the glass of water and trust the thermometer, not the controller.

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Chris_Dog

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What ever is the problem it is the controller. When I unplugged it the temp. in the freezer dropped about 10° in about 15-20 min.

The odd thing is that when I first set up the keezer the dial was relatively accurate. Now it is about 10° off.

At any rate I plugged it back up, removed the water, and dropped the dial about 10°.

KiltLifter

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Is your probe the solid kind (bubble at the end of a tube) or a shiney tip on the end of a grey wire? The former is ok in water, the latter is not.

ColoradoXJ13

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The other problem I found was that with the water in the keezer, I was getting a ton of condensation and mold started growing, cleaned that up, got rid of the water, and put in a tub of damprid.