STC-1000 wiring issues

[maxtar01]

Hi All,

I've wired my 220VAC STC-1000 up according to this diagram:

However, when I tested with a fan and a lamp, I saw that no power was going to either the Heat or Cool outlets (as well as accounting for the 3 minute delay).
Testing with the multi-meter shows that power is going into ports 5 and 7, but nothing is coming out of 6 and 8 when the unit is heating or cooling.

Any help at all would be appreciated.

 

[day_trippr]

Not sure if this is germain to an operating problem, but I'm pretty sure the Heating relay is on pins 5-6 and the Cooling relay is on 7-8...

Cheers!

 

[maxtar01]

The diagram is the wrong way round, but in essence should work correctly. The issue is the same irregardless.

 

[day_trippr]

Regardless.

I agree, even if you had the loads switched, if you have a rational configuration set into the unit, something ought to happen eventually - even if it's the wrong thing.

About all I could advise is to double check your neutral wiring...

Cheers!

 

[maxtar01]

Checked the neutral wiring in the Heat and Cool outlets, as well as the neutral on the STC itself with a multi-meter, all appear to be working correctly.

 

[day_trippr]

"It's Dead, Jim".

Sounds like you've done all the rational debugging.
Sorry.
Hopefully the replacement will be A-OK...

Cheers!

 

[raouliii]

Are you sure that you wired per the diagram? A photo may shed some light on the problem.

 

[maxtar01]

Apologies for the confusing layout:

The power cord is laid out as:
Brown: Phase
Blue: Neutral
Green/Yellow: Earth

I've followed the same pattern in my wiring, but red here is Earth as I didn't have any G/Y wiring.

 

[black_petal]

can someone look at my wiring too while we are at it? my fridge died and i am unsure if it's just bad timing as it was getting old or if it was my wiring that killed it..

https://www.homebrewtalk.com/showpost.php?p=7453666&postcount=2271