BrewBug said:Here are a couple pics of my finished controller. I wanted it to be smaller in size and I managed to fit it in a 6x4x2" project box.
Any ideas why my GFI would pop when some thing is plugged in the cold outlet? The unit turns on and functions fine but the hot outlet is on when the cold light is on and if u plug some thing in the cold side the GFI pops. What gives?
Sounds like you miswired it, I'd re-check everything! It might be easiest to remove all the wires and start over again. The GFI tripping means that you crossed ground and neutral somewhere along the way.
I only broke the hot tab on the outlet, do both need to be broke?
That's it.... I also just looked at the diagram again and i think i misread the diagram and did not hook up the green wire to the green ground screw, hooked it to the cool outlet itself. That has to be my issue.....
OK so I fixed the ground issue and the GFI is not tripping any more. I thought I had it only to be greeted by this: The cold outlet never has juice to it and the "hot side" has juice when it is heating and cooling? Any ideas? Clearly im a dumb ass.
Can you post a picture?OK so I fixed the ground issue and the GFI is not tripping any more. I thought I had it only to be greeted by this: The cold outlet never has juice to it and the "hot side" has juice when it is heating and cooling? Any ideas? Clearly im a dumb ass.
Huaco said:Holy-all-the-same-color-wires Batman!
Huaco said:Anybody use this U.S. vendor? I want to make sure I get the 120V unit and I never could get a straight answer from them about which one they will ship. Frustrating!!!!!!!!!!!!!
http://www.ebay.com/itm/Digital-STC-1000-All-Purpose-Temperature-Controller-Thermostat-Aquarium-w-Sensor-/140756919030?pt=LH_DefaultDomain_0&hash=item20c5c422f6
I used the eBay vendor from new York
These folks are from NY. Are they the same vendor you used? Can you look back on your ebay history to confirm?
Well, got everything wired up yesterday:
Worked as hoped, turned on the chest freezer, shut it off when it reached temp.
However... I'm guessing this is due to the chest freezer being empty (no thermal mass) but when testing it, when it reached the target temp of 15 degrees C it shut off power to the freezer, but the temp continued to drop for a few minutes. I assume with some carboys full of beer/water etc in there this won't be a problem?
However... I'm guessing this is due to the chest freezer being empty (no thermal mass) but when testing it, when it reached the target temp of 15 degrees C it shut off power to the freezer, but the temp continued to drop for a few minutes. I assume with some carboys full of beer/water etc in there this won't be a problem?
Never run freezers/fridges empty, especially using these controllers and with the probe only measuring air temp. Tape the probe to a container of something, then insulate on top of it. Always set the ASD (F3) to its max. Load in some jugs of water to add additional mass if you don't have enough beer.
raouliii said:Since I just did a little experimenting with my 110vac/STC1000, I thought I would post some information.
The transformer provides a 12.8:1 (115:9) step down. This 9vac is then rectified by diodes and smoothed with a capacitor to 13.4vdc. The 13.4vdc is used to power the electronics and the relays. The relays are spec'd to operate at a minimum of 9vdc.
https://www.homebrewtalk.com/photo/transformer-55782.html https://www.homebrewtalk.com/photo/relays-55781.html
We've seen many posts associated with members obtaining the wrong version of this controller. A post in another thread shows that the transformer in the 220vac version is 23:1 (230:10) step down. If one were to apply 110vac to this transformer the result would be a 5vac output which, using the same rectification ratio, would be rectified to about 7.5vdc. While this may be enough to operate the electronics , the relays, spec'd at a minimum of 9vdc, would not function consistently or not at all. This is why the 220vac version will not operate correctly on 110vac.
FWIW
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