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Old 09-09-2011, 10:00 PM   #1
rjwidman
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Default Johnson Controls

I recently purchased a kegerator on craigslist and it doesn't seem to be getting cold enough. I have the temp gauge on as cold as it will go and it just doesn't seem to want to get my beer below 45. I purchased a Johnson Controls A419, wired it (since it did not come wired), plugged the fridge into it and it into the wall. Then I set the temp I wanted per the instructions and it doesn't seem to be overriding the thermostat of the kegerator. Any ideas on what could be wrong?

Thanks,

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Old 09-09-2011, 10:26 PM   #2
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Is the temperature going lower without the controler ?

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Old 09-09-2011, 10:58 PM   #3
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Double check your wiring on the controller.

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Old 09-09-2011, 11:13 PM   #4
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Mathieu,

It is not getting colder. It doesn't seem to be overriding the thermostat.

Gritsak,

I checked the diagram that was in the instructions and seems to be wired correctly. There is power to the control and I can set a temp. It just doesn't seem to be overriding the fridge.

Is there something I need to do to the actual kegerator other than plugging it into the control? I was under the impression that it was a plug and play sort of thing.

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Old 09-09-2011, 11:15 PM   #5
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Johnson controllers work by cutting the power at the temp you want so it doesn't get colder than that.

If the kegerator won't get colder than 45 by itself, the Johnson controller won't make it get colder.

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Old 09-09-2011, 11:23 PM   #6
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Really? I thought the idea was for it to "trick" the kegerator by resetting something to where it basically tells the kegerator to keep working.

So how do I make my kegerator colder if not using the Johnson Controls?

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Old 09-09-2011, 11:24 PM   #7
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Originally Posted by rjwidman View Post
Really? I thought the idea was for it to "trick" the kegerator by resetting something to where it basically tells the kegerator to keep working.
We use them a lot to "trick" freezers to not freeze.

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So how do I make my kegerator colder if not using the Johnson Controls?
That I don't know. What kind of kegerator is it?
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Old 09-09-2011, 11:25 PM   #8
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my guess would be the thermostat is bad in the kegerator or low in freon or whatever refrigerant it uses. Or both. Have a refrigeration guy look at it and he will get you up and running

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Old 09-09-2011, 11:27 PM   #9
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Quote:
Originally Posted by rjwidman
Really? I thought the idea was for it to "trick" the kegerator by resetting something to where it basically tells the kegerator to keep working.

So how do I make my kegerator colder if not using the Johnson Controls?
Not necessarily. Chest freezers and fridges typically attain temps colder than recommended for serving beer. A temp controller allows you to accurately stop a cooling device at a particular temperature - oftentimes WARMER than the fridge's original thermostat would allow.

And for what it's worth, 45* is probably as perfect a temp as you can get for serving ale. It's what I have mine set to.
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Old 09-10-2011, 12:56 AM   #10
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It is a Sunbeam SCK02SMWBS.

I am not an electrician or an HVAC guy but I would assume that cooling unit continues to run until the thermostat or something tells it to stop. I have the setting as cold as it can go. I have my control set at:
SP = 36
DF = 6
ASD = 1
OFS = 7
SF = 1
Now the controller as well as a thermometer I have in the fridge is saying the temp is 51.
Do I have to do something to kegerator itself? Do I have to adjust the thermostat? Overload protector? Starter (PTC)? Or compressor? And if so what?

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