Happy HolidaySs Giveaway - Winners Re-Re-Drawn - 24 hours to Claim!

Get your HBT Growlers, Shirts and Membership before the Rush!


Home Brew Forums > Home Brewing Beer > DIY Projects > Fermenters > A/C unit for ferm chamber - no cold air.
Reply
 
LinkBack Thread Tools
Old 10-09-2009, 05:18 AM   #1
ThreeTaps
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2009
Location: Pacific Beach, CA
Posts: 586
Liked 6 Times on 6 Posts

Default A/C unit for ferm chamber - no cold air.

Well, I turned the window A/C unit on (Daewoo dwc-058rl) in my fermentation chamber to test it 48 hours before actually using it with a brew, and the A/C compressor turned off after about 10 minutes. The temp got down to 66F, then the compressor turned off and it's been blowing regular air for over an hour now. I have it set at 60F (lowest it will allow me to set it) but it doesn't get below room temp 68F as only the fan is on, not the compressor.

The A/C unit is on top of a garage closet, and the sensor wire lead was lengthened to 6'. The sensor does work accurately, as it detects cold refrigerator temperatures as well as hotter temps when I hold it in my hand.

Any ideas?

__________________
Justin H.
Brew Blog: Three Taps Brewing
Primary: Centennial Blonde Ale, Deception Cream Stout Secondary: Empty.
Bottle Conditioning / Drinking: Pumpkin Spice Ale, Cherry Wheat Ale, Bee Cave IPA, EdWort's Apfelwein.
R.I.P.: Bee Cave Haus Pale Ale, Oatmeal Stout, Pecan Scottish Ale, Nut Brown Ale, Blonde Ale.


RDWHAHB
Brewing Since August 17, 2009
Have a BlackBerry? Download the HBT launcher here.
Quote:
Originally Posted by shortyjacobs
You definitely win my award for "Most Enthusiastic New Brewer".
ThreeTaps is offline
 
Reply With Quote Quick reply to this message
Old 10-09-2009, 05:25 AM   #2
JKoravos
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2009
Location: Chelmsford, MA
Posts: 964
Liked 18 Times on 14 Posts
Likes Given: 3

Default

Find the AC's temp probe and heat it up between your fingers. If that doesn't turn it on, your compressor might be dead. Is it new or used?

__________________
JKoravos is offline
 
Reply With Quote Quick reply to this message
Old 10-09-2009, 05:28 AM   #3
ThreeTaps
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2009
Location: Pacific Beach, CA
Posts: 586
Liked 6 Times on 6 Posts

Default

Quote:
Originally Posted by JKoravos View Post
Find the AC's temp probe and heat it up between your fingers. If that doesn't turn it on, your compressor might be dead. Is it new or used?
I tried that before, and it does show the temp rising but doesn't turn the compressor on. It was bought new 2008 summer, and only used for a couple of months in the hot season.

I'm going to set it at 65 and see if that does anything. Maybe they have a low threshold set lower than it can actually go. Not likely, but worth a shot.

EDIT: Nope, nothing. Even turning it on turbo mode (no temp threshold, just constant cooling) didn't turn the compressor on. Ugh.
__________________
Justin H.
Brew Blog: Three Taps Brewing
Primary: Centennial Blonde Ale, Deception Cream Stout Secondary: Empty.
Bottle Conditioning / Drinking: Pumpkin Spice Ale, Cherry Wheat Ale, Bee Cave IPA, EdWort's Apfelwein.
R.I.P.: Bee Cave Haus Pale Ale, Oatmeal Stout, Pecan Scottish Ale, Nut Brown Ale, Blonde Ale.


RDWHAHB
Brewing Since August 17, 2009
Have a BlackBerry? Download the HBT launcher here.
Quote:
Originally Posted by shortyjacobs
You definitely win my award for "Most Enthusiastic New Brewer".

ThreeTaps is offline
 
Reply With Quote Quick reply to this message
Old 10-09-2009, 05:43 AM   #4
Bsquared
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Bsquared's Avatar
Recipes 
 
Join Date: Oct 2006
Location: San Diego
Posts: 1,816
Liked 56 Times on 51 Posts
Likes Given: 22

Default

That does not sound good. Can you see if there is ice build up on the coils? and has the water trap been drained? May be try draining the condensation trap and turning it off over night.

did you turn it on less than 24hr after installing it? I've always heard that if you move a refrigeration system excessively, or tip it on its side, that you should give it 24hr before turning it back on.

Luckily its fairly cool right now, you might not need the ac to hold a good temp, that room you build might be adequate to hold a stable 68º. If you need it though, I have some room in my freezer chest's I can offer you.

__________________
Bsquared is offline
 
Reply With Quote Quick reply to this message
Old 10-09-2009, 05:58 AM   #5
dontman
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2008
Location: Philly, PA
Posts: 2,430
Liked 25 Times on 20 Posts
Likes Given: 2

Default

I bypassed the whole tstat and just hardwired the ac so that the compressor is on if juice is flowing to it.

My temp control is based completely on the external t-stat.

__________________
On Tap: 1. Kelly R. IPA, 2. Roter Hund Hefeweizen, 3. Bud Killer Blonde, 4. Red Dog Pale, 5. Roter Hund Oktoberfest, 6. Pumpkin Ale, 7. McRed's Stout (with new nitro system and stout tap,) Cream Soda, 8. ESB # 3, & 9. Ordinary Bitter.

dontman is offline
 
Reply With Quote Quick reply to this message
Old 10-09-2009, 06:10 AM   #6
ThreeTaps
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2009
Location: Pacific Beach, CA
Posts: 586
Liked 6 Times on 6 Posts

Default

Thanks for the replies. I don't think it's condensation or the coils freezing up, as this is the first time it's been on for longer than 30 minutes in over a year.

I guess I'll just have to start shopping around for another one.

__________________
Justin H.
Brew Blog: Three Taps Brewing
Primary: Centennial Blonde Ale, Deception Cream Stout Secondary: Empty.
Bottle Conditioning / Drinking: Pumpkin Spice Ale, Cherry Wheat Ale, Bee Cave IPA, EdWort's Apfelwein.
R.I.P.: Bee Cave Haus Pale Ale, Oatmeal Stout, Pecan Scottish Ale, Nut Brown Ale, Blonde Ale.


RDWHAHB
Brewing Since August 17, 2009
Have a BlackBerry? Download the HBT launcher here.
Quote:
Originally Posted by shortyjacobs
You definitely win my award for "Most Enthusiastic New Brewer".
ThreeTaps is offline
 
Reply With Quote Quick reply to this message
Old 10-09-2009, 07:39 AM   #7
jppostKW
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2009
Location: Englewood CO
Posts: 1,814
Liked 11 Times on 11 Posts
Likes Given: 4

Default

Couple questions are is there freon in the system 2 there should be high and low pressure switches on it check to make sure they aren't open I.e. Show OL on your multimeter set to ohms last one and its really obvious and happened to me before but is there power to your compressor

__________________
Diesel Fuel Brewery

Quote:
Originally Posted by paulthenurse View Post
It would be the brewing equivalent of painting the Sistine Chapel with Crayola Crayons.
Quote:
Originally Posted by Stuntman View Post
You sir, are a specialist in the art of discovering a welcoming outcome of a particular situation....not a mechanic.
jppostKW is offline
 
Reply With Quote Quick reply to this message
Old 10-09-2009, 03:29 PM   #8
ThreeTaps
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2009
Location: Pacific Beach, CA
Posts: 586
Liked 6 Times on 6 Posts

Default

Quote:
Originally Posted by jppostKW View Post
Couple questions are is there freon in the system 2 there should be high and low pressure switches on it check to make sure they aren't open I.e. Show OL on your multimeter set to ohms last one and its really obvious and happened to me before but is there power to your compressor
Thanks for the reply, but I have no idea how to check the freon in a window A/C unit. As far as checking for the high/low switches and all that other stuff, again don't know where to look. I would assume that since the unit powers on and the fan continually runs that the compressor would have power to it as well.
__________________
Justin H.
Brew Blog: Three Taps Brewing
Primary: Centennial Blonde Ale, Deception Cream Stout Secondary: Empty.
Bottle Conditioning / Drinking: Pumpkin Spice Ale, Cherry Wheat Ale, Bee Cave IPA, EdWort's Apfelwein.
R.I.P.: Bee Cave Haus Pale Ale, Oatmeal Stout, Pecan Scottish Ale, Nut Brown Ale, Blonde Ale.


RDWHAHB
Brewing Since August 17, 2009
Have a BlackBerry? Download the HBT launcher here.
Quote:
Originally Posted by shortyjacobs
You definitely win my award for "Most Enthusiastic New Brewer".
ThreeTaps is offline
 
Reply With Quote Quick reply to this message
Old 10-09-2009, 03:35 PM   #9
samc
Feedback Score: 1 reviews
Recipes 
 
Join Date: Aug 2008
Location: Portland OR
Posts: 5,420
Liked 55 Times on 52 Posts
Likes Given: 29

Default

I would reverse the sensor lengthening process to see if that is somehow shorting something out. I had a similar problem with my wine fridge conversion to kegerator recently. I bypassed the thermostat (very simple in this fridge) and it works perfectly, so far!

__________________
samc is offline
 
Reply With Quote Quick reply to this message
Old 10-09-2009, 03:44 PM   #10
ThreeTaps
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2009
Location: Pacific Beach, CA
Posts: 586
Liked 6 Times on 6 Posts

Default

Quote:
Originally Posted by samc View Post
I would reverse the sensor lengthening process to see if that is somehow shorting something out. I had a similar problem with my wine fridge conversion to kegerator recently. I bypassed the thermostat (very simple in this fridge) and it works perfectly, so far!
Good idea, but it's such a simple wiring job that I doubt it's the culprit. Just a two stranded wire connected to the same type of extension wire (slightly larger awg). Plus, if I shorten the lead, then it mitigates the whole purpose of having an A/C unit up top.

I'm looking on craigslist right now for a good price on a portable A/C unit that I can just put on the floor of the fermentation cabinet, then just direct the exhaust hose out the top.
__________________
Justin H.
Brew Blog: Three Taps Brewing
Primary: Centennial Blonde Ale, Deception Cream Stout Secondary: Empty.
Bottle Conditioning / Drinking: Pumpkin Spice Ale, Cherry Wheat Ale, Bee Cave IPA, EdWort's Apfelwein.
R.I.P.: Bee Cave Haus Pale Ale, Oatmeal Stout, Pecan Scottish Ale, Nut Brown Ale, Blonde Ale.


RDWHAHB
Brewing Since August 17, 2009
Have a BlackBerry? Download the HBT launcher here.
Quote:
Originally Posted by shortyjacobs
You definitely win my award for "Most Enthusiastic New Brewer".
ThreeTaps 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
My Ferm Chamber rhltechie Fermenters 4 08-26-2010 05:44 PM
Even more help with ferm chamber rhltechie Fermenters 18 09-19-2009 12:45 PM
My ferm. chamber metaltim Fermenters 5 08-06-2009 11:40 PM
Best Refrigeration Unit for a Ferm. Chamber? boodyrischous Fermenters 5 03-21-2009 12:46 AM
Best Refrigeration Unit for a Ferm. Chamber boodyrischous Equipment/Sanitation 5 03-19-2009 11:49 PM



Newest Threads

LATEST SPONSOR DEALS