I have had two all grain pilsners cold conditioning @2C for two months now in my freezer setup and the temp via the stc1000 has been holding steady all along.Put another keg of an FES in there yesterday and put the two pislners on gas @circa 11psi.Problem is since i did do this is what the stc1000 is hhsowing and i cant get the fecking thing to settle,i have not touched anything except i tried turning down the thermostat to the freezer half way and still i am getting this.I don't want me bloody kegs freezing solid so need help guys asap. :-[
Has the STC shut off the power to the freezer? It looks like it has from the photo of the controller, it'll just take a while for the temp to come back up to the 2C in that case.
Temp probe might have been moved slightly when you put the other keg in?
Quote from: kev on May 04, 2015, 09:44:54 PM
Has the STC shut off the power to the freezer? It looks like it has from the photo of the controller, it'll just take a while for the temp to come back up to the 2C in that case.
Temp probe might have been moved slightly when you put the other keg in?
Don't understand what you mean by shut off the power m8 but as to the probe i settled that back to where it was before,thing is if it takes too long for the temp to settle back to 3C the kegs will be frozen solid by then. :'(
Switch off and open the door!
Is your thermostat in the open or in a bottle of water? I would recommend having it submerged in water for accuracy.
Quote from: Will_D on May 04, 2015, 09:53:02 PM
Switch off and open the door!
Tried that and it just dropped back down again to minus figures once i plugged back in. >:(
Quote from: Vermelho on May 04, 2015, 09:53:26 PM
Is your thermostat in the open or in a bottle of water? I would recommend having it submerged in water for accuracy.
In the open same as it has been since i setup the freezzer and i always got spot on readings,however to elimenate a possible issue i will do that now. ;D
Quote from: Greg2013 on May 04, 2015, 09:48:53 PM
Don't understand what you mean by shut off the power m8
Is the freezer still running when plugged in, even though below your stc set temperature?
Quote from: kev on May 04, 2015, 09:56:49 PM
Quote from: Greg2013 on May 04, 2015, 09:48:53 PM
Don't understand what you mean by shut off the power m8
Is the freezer still running when plugged in, even though below your stc set temperature?
Yes. ;D
I upped the temp to 6C with a 0.5 differential and put the probe in a glass of tap water. 8)
The STC should be turning the freezer off when it's reading below your set point.
If it's not somethings wrong with it, the settings or the way its wired
Quote from: kev on May 04, 2015, 10:09:08 PM
The STC should be turning the freezer off when it's reading below your set point.
If it's not somethings wrong with it, the settings or the way its wired
Will have a check tomorrow but wiring should be fine. ;D
The display suggests that the current temp is -2.6
The 'Heat' LED is lit which suggests that the logic in the STC is telling the Heating circuit to come on.
If the fridge is running, the COLD Relay may have failed closed.
Remove ALL power - Check continuity over the Cold contacts.
If this is closed you may be able to replace the relay or the STC complete.
Quote from: johnrm on May 04, 2015, 10:22:23 PM
The display suggests that the current temp is -2.6
The 'Heat' LED is lit which suggests that the logic in the STC is telling the Heating circuit to come on.
If the fridge is running, the COLD Relay may have failed closed.
Remove ALL power - Check continuity over the Cold contacts.
If this is closed you may be able to replace the relay or the STC complete.
To be honest right now this seems the most likley cause,,however i dont have a spare stc1000 to hand so would be several weeks yet until i do. ;D
I have one spare, one of the Display segments is gone, but it works perfectly other than that.
I rewired my stc 1000 and set it all back up again with my stout keg this time and the probe suspended as seen below and i set the stc 1000 for 10C just to test.As you can see she is heading sub zero big time so what is the issue ? >:(
Plug the freezer into the other plug on the STC - what happens?
How have you the STC wired, pics please.
Hope ye can see this. ;D
You need to tape the sensor to the keg!
Fold up a piece of kitchen paper, cover and tape it to the side of the keg.
Having it dangle like that gives erratic readings making it jump between heat and cool constantly ???
Not wired correctly :(
Follow LE's diagram
http://www.nationalhomebrewclub.ie/forum/index.php?topic=7491.0
Quote from: Ciderhead on May 17, 2015, 08:23:33 PM
Not wired correctly :(
Follow LE's diagram
http://www.nationalhomebrewclub.ie/forum/index.php?topic=7491.0
I did that's how he has it wired,same way i wired it last time too. ;D
Quote from: Ciderhead on May 17, 2015, 08:23:33 PM
Not wired correctly :(
Follow LE's diagram
http://www.nationalhomebrewclub.ie/forum/index.php?topic=7491.0
Not all STC's are the same. Plug a lamp in to the cooling socket and see what happens!
Edit: wiring looks fine👌
Quote from: johnrm on May 04, 2015, 10:22:23 PM
The display suggests that the current temp is -2.6
The 'Heat' LED is lit which suggests that the logic in the STC is telling the Heating circuit to come on.
If the fridge is running, the COLD Relay may have failed closed.
Remove ALL power - Check continuity over the Cold contacts.
If this is closed you may be able to replace the relay or the STC complete.
Did you test as above?
Also test continuity over the HOT side.
It looks like the Probe may have failed.
Have you tried using another probe?
Quote from: johnrm on May 17, 2015, 08:43:58 PM
Quote from: johnrm on May 04, 2015, 10:22:23 PM
The display suggests that the current temp is -2.6
The 'Heat' LED is lit which suggests that the logic in the STC is telling the Heating circuit to come on.
If the fridge is running, the COLD Relay may have failed closed.
Remove ALL power - Check continuity over the Cold contacts.
If this is closed you may be able to replace the relay or the STC complete.
Did you test as above?
Also test continuity over the HOT side.
It looks like the Probe may have failed.
Have you tried using another probe?
Unfortunately i have no multimeter atm to test continuity properly and i don't have a spare probe atm. ;D
If your using a freezer and some other heat source could it be you have plugged the heat source in to the cold socket and the cold (e.g freezer) in to the heat? I ask because I see the heat light on your STC panel from your picture.
Shanna
Quote from: Shanna on May 17, 2015, 08:56:17 PM
If your using a freezer and some other heat source could it be you have plugged the heat source in to the cold socket and the cold (e.g freezer) in to the heat? I ask because I see the heat light on your STC panel from your picture.
Shanna
I did think of that but no i double and triple checked and it's wired right according to the diagram on here. Just in case i pulled it from its container and rewired it from scratch using a new block connector i found. ;D Waiting to see what will happen now. :(
Quote from: Greg2013 on May 17, 2015, 09:51:32 PM
Quote from: Shanna on May 17, 2015, 08:56:17 PM
If your using a freezer and some other heat source could it be you have plugged the heat source in to the cold socket and the cold (e.g freezer) in to the heat? I ask because I see the heat light on your STC panel from your picture.
Shanna
I did think of that but no i double and triple checked and it's wired right according to the diagram on here. Just in case i pulled it from its container and rewired it from scratch using a new block connector i found. ;D Waiting to see what will happen now. :(
What I meant was if you had the stc-1000 connected up to two sockets one should be wired to plug-in a heat source & the other to a cold source. It is easy to mix up which socket is for which & end up heating when your supposed to be cooling & vice versa. I am of course assuming you have two sockets being controlled by the stc controller.
Shanna
wiring looks ok now
you were missing a wire on first picture
Quote from: Shanna on May 17, 2015, 10:05:15 PM
Quote from: Greg2013 on May 17, 2015, 09:51:32 PM
Quote from: Shanna on May 17, 2015, 08:56:17 PM
If your using a freezer and some other heat source could it be you have plugged the heat source in to the cold socket and the cold (e.g freezer) in to the heat? I ask because I see the heat light on your STC panel from your picture.
Shanna
I did think of that but no i double and triple checked and it's wired right according to the diagram on here. Just in case i pulled it from its container and rewired it from scratch using a new block connector i found. ;D Waiting to see what will happen now. :(
What I meant was if you had the stc-1000 connected up to two sockets one should be wired to plug-in a heat source & the other to a cold source. It is easy to mix up which socket is for which & end up heating when your supposed to be cooling & vice versa. I am of course assuming you have two sockets being controlled by the stc controller.
Shanna
Because i have nothing to lose at this stage i am going to wire the freezer into the heater circuit and the tube heater into the chiller circuit just to rule out the stc 1000 being wrong way around. :o
Quote from: Ciderhead on May 17, 2015, 10:12:01 PM
wiring looks ok now
you were missing a wire on first picture
That was because i had no tube heater connected at the time. ;D
Now i have it all fully rewired and even with the cooler and heater indicators off(temp has bee reached) the bastard freeer is still running. >:(
In the absence of a multimeter - get a battery, a bulb and a piece of wire.
Remove power and check for continuity.
If you do not do this you are wasting everyones time including your own.
Have you connected up a socket for cooking and a second one for heating? You wouldn't have the freezer connected to the hot socket would you ? No offence but this would be the first thing I would look at if it is running continuously when calling for heat. If you have two sockets testcdrive the stc with something like a table lamp. Plug it into the cooling socket and set the stc temp below ambient and check the light comes on and doesn't work on the hot socket, then move the set point above ambient and ensure the hoy socket comes on and the old one goes off
Sorry didn't see the extra pages of advice :-X
Quote from: Sorcerers Apprentice on May 18, 2015, 09:38:16 AM
Have you connected up a socket for cooking and a second one for heating? You wouldn't have the freezer connected to the hot socket would you ? No offence but this would be the first thing I would look at if it is running continuously when calling for heat. If you have two sockets testcdrive the stc with something like a table lamp. Plug it into the cooling socket and set the stc temp below ambient and check the light comes on and doesn't work on the hot socket, then move the set point above ambient and ensure the hoy socket comes on and the old one goes off
This was suggested by an Aussie friend on FB as well and is exactly what i am going to do so ty SA.I posted on a couple pages on FB to see if i could get an STC 1000 setup fro one of the UK lads for a decent price,i don't want to wait for the Chinese slow boat and i am not willing to pay the £70stg they are asking on ebay.co.uk for pre made setups.If in have to i will wait on the Chinese slow boat but i have two AG pilsners here in danger of having to be chucked if i can't chill them soon,hence my haste. ;D