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Old 10-11-2009, 01:46 PM   #1
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Default Problem with brand new 15 cu. ft. chest freezer

Yesterday, I replaced an old upright fridge with a brand new Frigidaire Energy Star 15 Cu. Ft. chest freeezer from Lowe's. I got it set up in the garage and installed the analog themostat controller that I had on my last fermentation fridge. (The link to it listed below.) The controller works fine because I had it temporarily on my kegerator while a kolsch I recently brewed was still in primary.

Anyway, I am not getting the temperature that I am dialing in (68 deg) and I have two themometers both reading 76 deg.(analog inside and digital probe from outside). Occasionally I hear the unit cycle on but then shuts off after three or four seconds.

Please help! I have two batches in this new freezer and any suggestions to help me fix the problem will be very much appreciated. Thanks.

Link to themostat controller:

http://www.midwestsupplies.com/produ...px?ProdID=4230

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Old 10-11-2009, 02:21 PM   #2
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First, you need to know if the freezer is okay. Plug it directly into the outlet and see what happens.

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Old 10-11-2009, 02:46 PM   #3
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Not sure about the unit coming on and going off after 3-4 seconds, but I have the same controller on my deep freezer and the number on the dial almost never matches the actual temp.

Try turning your dial down to 58-60 and see what happens with the compressor on the freezer. Also, make sure the probe for the controller and the probe for your thermometer are in the same place (either both ambient or both in some liquid) to get your numbers as far as where to set your dial.

Here I have the probe in ambient and the temperature probe in sanitized water. What you can't see is I also have a 2nd temperature probe in ambient to check the difference (second pic).


As you can see by this second picture, once the unit has time to re-settle, there's not much difference between ambient temp (the one on the left) and the temp of the sanitized water (the one on the right). The units are sitting on top of the lid. I also have a small fan in it to keep the air moving so I don't get hot and cold spots (first pic).

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Old 10-11-2009, 04:04 PM   #4
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Make sure the control knob on the freezer itself is set to max

If it`s not it may interfere with the controller.

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Old 10-12-2009, 06:38 PM   #5
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put your thermostat temp probe in a cup of water, it will slow the rate at which the probe registers a change in temp.
+1 on setting the freezer to it's coldest temp.

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Old 10-12-2009, 07:51 PM   #6
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Quote:
Originally Posted by david_42 View Post
First, you need to know if the freezer is okay. Plug it directly into the outlet and see what happens.
Yep. First step.
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Old 10-12-2009, 08:54 PM   #7
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The temp indicator on your dial is probably recalibratable. If you're seeing a real temp of 76, open it up and turn the indicator so that it shows a set temp of 76.

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Old 10-12-2009, 09:01 PM   #8
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+1 on check the freezer first.

Then make sure the temp probe is not touching the walls of the freezer.

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Old 10-12-2009, 11:40 PM   #9
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Thanks for all the replies! Technician came by the house today and ran some checks on the unit and determined the compressor was bad. Looks like I bought a LEMON! Getting a new one delivered in two days. I will use some of the tips that were posted such as setting the thermostat dial to max , but I don't think that matters since the analog thermostat controller basically bypasses the built-in one on the unit. I do like the tip of keeping the probe in water. We'll see what happens...On a more positive note:

The most exciting thing is that I will have enough room for 6 fermenters plus the shelf. That's double the space compared to my last upright fridge. I need two more glass carboys to fill it up. I do have 6 corney kegs. Any ideas on converting pin lock corney kegs into fermenters?

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Old 10-13-2009, 02:21 PM   #10
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The controller doesn't bypass the internal T-stat. All you are doing is plugging the freezer into the external. Set the freezer t-stat low enough and it'll still shut down the compressor. Which is why it's suggested to crank the freezer t-stat to it's coldest setting and let the outboard shut power to the freezer.

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