Electric Brewing Supply 30A BCS Giveaway - Last Weekend to Enter!


Home Brew Forums > Home Brewing Beer > DIY Projects > ebay aquarium temp controller build
Reply
 
LinkBack Thread Tools
Old 04-01-2010, 10:56 AM   #101
Bjornbrewer
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2008
Location: St. Clair Shores, MI, USA, Earth, Sol System, Milky Way
Posts: 428
Liked 3 Times on 3 Posts

Default

Quote:
Originally Posted by Scimmia View Post
Two things

First, it has to be below where you have it set by a specific amount. That's the differential adjustment. If you have it set at 5C with a differential of 1C, it won't turn on the heat until the temp gets to 4C.
Agreed. that was my first thought.

Quote:
Originally Posted by Scimmia View Post
Second, if the temp is dropping quickly, you could be running into the anti short cycle delay. After it turns off, it won't turn back on within that amount of time.
It only has a delay for the cooling..."compressor cool down" as they call it.
__________________
Sand Viking Brewery

“Happiness? A good cigar, a good meal, a good cigar and a good woman - or a bad woman; it depends on how much happiness you can handle.” ~George Burns
Bjornbrewer is offline
 
Reply With Quote Quick reply to this message
Old 04-01-2010, 11:29 AM   #102
wyzazz
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2009
Location: Atwater, OH
Posts: 4,266
Liked 41 Times on 40 Posts
Likes Given: 49

Default

If that's the case, I'd say you've got a bunk controller. Contact the seller to see if they can ship you out a replacement? They're in China so it may not be easy or even worth the $30.00 you spent on the controller, but it's worth a shot.

__________________
Quote:
Originally Posted by Revvy View Post
And I'd like to see my 1.080 beers ready from grain to glass in a week, and served to me by red-headed twin penthouse pets wearing garter belts and fishnet stockings, with Irish accents, calling me "master luv gun," but we can't always get what we want can we? :)
wyzazz is offline
 
Reply With Quote Quick reply to this message
Old 04-01-2010, 04:14 PM   #103
android
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2009
Location: Ames, Iowa
Posts: 3,117
Liked 38 Times on 31 Posts
Likes Given: 3

Default

i thought differential as well. let us know if that fixes it, otherwise, i'd definitely contact them about getting a new one. i bet they will help you out.

__________________
primary: APA

ebay temp controller | thermostat temp controller
android is offline
 
Reply With Quote Quick reply to this message
Old 04-02-2010, 02:45 AM   #104
MatterOne
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2010
Location: WI
Posts: 69
Liked 8 Times on 7 Posts
Likes Given: 8

Default

I haven't really been able to monitor it at all because I haven't been around, but it seems to be working okay now.

I thought that the temperature differential was the amount it would overheat. For example, if it were set at 5c with a differential of 1c, it would turn it on at 5c, and heat it until it got to 6c.

Apparently, I was mistaken.

So, I'll try to keep an eye on what it's doing over the weekend and I'll be sure to update.

Thanks, guys. I appreciate the help.

__________________
MatterOne is offline
 
Reply With Quote Quick reply to this message
Old 04-02-2010, 01:46 PM   #105
Bjornbrewer
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2008
Location: St. Clair Shores, MI, USA, Earth, Sol System, Milky Way
Posts: 428
Liked 3 Times on 3 Posts

Default

Quote:
Originally Posted by MatterOne View Post
I haven't really been able to monitor it at all because I haven't been around, but it seems to be working okay now.

I thought that the temperature differential was the amount it would overheat. For example, if it were set at 5c with a differential of 1c, it would turn it on at 5c, and heat it until it got to 6c.

Apparently, I was mistaken.

So, I'll try to keep an eye on what it's doing over the weekend and I'll be sure to update.

Thanks, guys. I appreciate the help.
If I remember the instruction correctly, the heating contact closes when T=Tsetpoint - Tdiff

The cooling contact closes when T = Tsetpoint + Tdiff

Both turn off when T = Tsetpoint
__________________
Sand Viking Brewery

“Happiness? A good cigar, a good meal, a good cigar and a good woman - or a bad woman; it depends on how much happiness you can handle.” ~George Burns

Bjornbrewer is offline
 
Reply With Quote Quick reply to this message
Old 04-02-2010, 02:17 PM   #106
MatterOne
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2010
Location: WI
Posts: 69
Liked 8 Times on 7 Posts
Likes Given: 8

Default

Alright, I understand now. (In the second line, you meant to say cooling contact, right?)

It seems kind of backwards to me that they would do it that way. Oh well.

But that was my problem, and everything is working fine. Sorry, I'm a little slow sometimes.


So, while we're at it, where is everyone setting their differentials? Mine is set at .6 right now, giving me a one degree F swing.

Aaaaaand what is the point of the cooling delay?

__________________
MatterOne is offline
 
Reply With Quote Quick reply to this message
Old 04-02-2010, 02:23 PM   #107
Bjornbrewer
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2008
Location: St. Clair Shores, MI, USA, Earth, Sol System, Milky Way
Posts: 428
Liked 3 Times on 3 Posts

Default

Quote:
Originally Posted by MatterOne View Post
Alright, I understand now. (In the second line, you meant to say cooling contact, right?)

It seems kind of backwards to me that they would do it that way. Oh well.

But that was my problem, and everything is working fine. Sorry, I'm a little slow sometimes.


So, while we're at it, where is everyone setting their differentials? Mine is set at .6 right now, giving me a one degree F swing.

Aaaaaand what is the point of the cooling delay?
Fixed it...thanks.

it really doesn't matter if it switches lower than the setpoint or higher..it's still a set differential. My set point is at 4.4C with a .5 differential. haven't really noted how often it cycles.

The cooling delay is to let the compressor cool down before the next cycle. starting a hot compressor will reduce the life (lots of current draw to start when already hot is a bad thing).
__________________
Sand Viking Brewery

“Happiness? A good cigar, a good meal, a good cigar and a good woman - or a bad woman; it depends on how much happiness you can handle.” ~George Burns
Bjornbrewer is offline
 
Reply With Quote Quick reply to this message
Old 04-02-2010, 02:24 PM   #108
Jawbox0
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2009
Location: Ormond Beach, Florida
Posts: 383
Liked 11 Times on 9 Posts
Likes Given: 8

Default

Quote:
Originally Posted by MatterOne View Post
Alright, I understand now. (In the second line, you meant to say cooling contact, right?)

It seems kind of backwards to me that they would do it that way. Oh well.

But that was my problem, and everything is working fine. Sorry, I'm a little slow sometimes.


So, while we're at it, where is everyone setting their differentials? Mine is set at .6 right now, giving me a one degree F swing.

Aaaaaand what is the point of the cooling delay?
I'm using a .5 degree differential with a 10 or 15 minute delay. The point is that often refrigeration doesn't like being short cycled, sometimes to the point of an early demise.
__________________
Jawbox0 is offline
 
Reply With Quote Quick reply to this message
Old 04-02-2010, 03:03 PM   #109
Yambor44
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Yambor44's Avatar
Recipes 
 
Join Date: Nov 2008
Location: Ocala Florida
Posts: 1,953
Liked 43 Times on 28 Posts
Likes Given: 6

Default

Subscribed.

__________________
Yambor44 is offline
 
Reply With Quote Quick reply to this message
Old 04-02-2010, 09:52 PM   #110
the_Roqk
Feedback Score: 0 reviews
 
the_Roqk's Avatar
Recipes 
 
Join Date: Feb 2007
Location: Central Florida
Posts: 975
Default

I've ordered me one of those little contollers off of ebay. I recently was given a 20 cu ft fridge from a friend of mine. He was remodeling his kitchen and wife wanted a new fridge. He just wanted the one he gave me out of his house. Thing is, his fridge is better than the one I have now. So I'm gonna take my old one and convert it to a being a fermenting chamber/ lagerator. My controller wont be sent until after the Easter holiday. No matter, I have plenty to work on until it arrives.

Thanks to the OP for posting the info.

__________________
the_Roqk is offline
 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
DIY temp controller build android DIY Projects 100 05-09-2013 01:14 PM
Control Fermentation temp with Aquarium Heater chemist308 General Techniques 20 12-14-2012 11:13 PM
question about "aquarium temperature controller" SamBrewer General Techniques 12 02-26-2011 06:30 PM
Attic Fan Temp Controller = Inexpensive Fermentation Controller???? Beernip General Techniques 5 06-16-2009 04:30 PM
Brutus Build Controller Box? gruversm DIY Projects 9 03-27-2009 03:54 AM