How do you convert the Johnson Controls temp regulator? - Home Brew Forums

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Old 11-09-2008, 02:05 AM   #1
Jun 2008
Posts: 111
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I need to keep my freezer (fermentation) warm enough.
I thought I could change my temp regulator over for heat.
I took the top off and found a switch that read "maximum" and "minimum".
I pushed it over to the max thinking that that was all I needed to do... nothing.
I have a heating pad hooked up.
I am I missing something?

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Old 11-09-2008, 03:25 AM   #2
Jaybird's Avatar
Jul 2006
Posts: 7,597
Liked 978 Times on 689 Posts

your johnson controler has to be a 2 stage controler if it is use the N.C. contact and you should be good
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Old 11-09-2008, 03:38 AM   #3
The Pol
Feb 2007
Posts: 11,454
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My A419 has jumpers inside it that have to be switched to set it up for heating/cooling. It details it in the directions.

Primary- Circle City Haus Ale
Secondary- Orange Cascade APA (dry hop)
Keg1- Centennial Blonde (On tap)
Keg2- Oktoberfest (On tap)
Keg3- Christmas Spice
Keg4- Fire In The Hole
Keg5- AIR
Keg6- AIR
Keg7- AIR
Keg8- AIR

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Old 11-09-2008, 03:41 AM   #4
Jun 2008
Posts: 111
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Sure wish I could find those.

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Old 11-09-2008, 11:27 PM   #5
Feb 2008
Healdsburg, CA
Posts: 380
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You need to remove the four screws on the front. Open the casing and there are two jumpers right next to the wiring assembly for the display. Place the jumpers so that both contacts are covered. You will now be in "heating" mode. Replace the cover and you should see a little flame where there once was a snowflake. Now set your temp to the cut out (when you want it to stop heating) temp and you should be good to go. If you need more detail, just google the model and you should be able to find an operating manual without much difficulty.


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