Temperature controller problem

[GeorgiaVol]

I hope this is the right place to ask.
I have a temperature controller problem. I have the STC-100a on my cooler. It seems to set correctly, but after it reaches the set temperature, it cuts the compressor off and does not come back on unless I turn it off then on again.
I was going to get a new controller, the STC-1000, but I would like to make sure all the wiring will match.
If anyone knows, please help me out.
Thanks!

 

[NeoBrew]

Are you waiting long enough? The STC 100 has a delay setting on cooling so that the compressor doesn't short cycle and burn out. I believe the default is 2 minutes?

 

[GeorgiaVol]

Yes. Even overnight it does not come back on.

 

[GeorgiaVol]

Here is the wiring diagram

 

[NeoBrew]

Hard to diagnose without being there. Does the STC1000 click like it is tripping on? Do you have a meter? You could see if the unit is providing power at the terminals.

Could be a loose wire somewhere? Try plugging in a lamp or something and see how it behaves. Maybe the problem is the cooler?

 

[GeorgiaVol]

Not sure how it could be the cooler, but I certainly am not an expert. I was really just asking if I changed it from the STC-100a to an STC-1000 if it would hook up the same. There are a few different ones and was unsure which one I needed.
Thanks!

 

[NeoBrew]

I'm not familiar with the differences in the different models.

 

[goldenknotslim]

The stc1000 looks nearly identical, sans heating.

 

[goldenknotslim]

Here is a pic

 

[GeorgiaVol]

So it should work as long as I get the 110v version?

 

[goldenknotslim]

Here is the 110V model.
Mirrored layout on the 110 and 220 stc1000 compared to the stc100.
I don't know if the temp probes are interchangeable between 100 and 1000, but it is possible.
Stock units will only have two terminals for the temp probe.

 

[GeorgiaVol]

Well, I will try it.
Thanks!

 

[goldenknotslim]

The only difference that I see is that the 100 will switch 16A, the 1000 10A.
As long as 110V goes to "power supply"
thermister goes to "sensor" and your fridge is connected to "cooling"(load) you're golden. Orientation within each pair does not make a difference.

 

[GeorgiaVol]

I hope this works. I REALLY need to get this going