Okay, so we have kind of a consistent issue with the va8 condensers from carrier where they're really susceptible to over voltage. If you look at the power supply, it's rated for 208, 230 and still remember 230, the permissible maximum voltage is 253 and what we found is these things have catastrophic board failure whenever you get consistently over 253. So you can see right here on our ICM 493. We have a voltage over over voltage condition, that's resulting in it not running what we're gon na do today, because we've called the power suit company and they're, just not being hopeful, and also he gets worse at night right now in the middle of day and we've Seen it all the way up to 260, so we're gon na go ahead and just put in our own bucking Blues transformer to drop this voltage down enough to allow it to safely operate.

We're gon na do that before our ICM 493 and then going into the ICM 493 and still protect the condenser. So for safety sake we only shut off the breaker, but before we actually start touching anything, we check to a known voltage source. So I'm gon na check from one leg to ground to make sure that my meter reads it and then I'm gon na check from leg to leg and then leg to ground and make sure the power is off before we start disconnecting and installing our buck and Boost transformer - in this case I say buck and boost transformer, but really buck and boost just means either boost which is increased, voltage or buck, which is decrease phul. So we're going to be using your buck, so this is 0.75 KVA.

That's kilovolt am so that's thousands of ol times, so that's a 750 VA transformer, and when you look at this, you really have to look at the specs to make sense of what all of this means, because it on face value. It looks like well, we've got a primary 240 or 120 volts. Then you got all this additional jazz and if you don't speak the language of boost transformers, that's not gon na make a whole lot of sense. So I can look at the mean alright, so you can see, we've got the primaries.

120 X. 240. Secondaries 1632. This is what we're looking at here and we've got not the 0.75.

This is something you can easily make a mistake. It's not point zero, seven! Five! It's a point, seven five. So this is what we've got and we're trying to buck. Boosting is a reduction in voltage, we're trying to reduce our voltage from we're.

Actually I mean more like to 50 to 55 in this range. I'm gon na drop it down to this lower and if you look here, this will show us what our rating is from amperage, which is perfect. So we've been 50 amps. That's we're in good shape there plenty of capacity, that's what we're gon na be sitting it up, as which is the C wiring configuration on this guy got to find the C wiring configuration.

I've turned to the buck-boost connection diagram, we're gon na get a figure C, which is what it's calling for here. So this is how we're gon na connect it. This is our higher voltage, so this would be our, and this is kind of confusing, because this is actually its higher voltage. Here's our primary and this lower voltage is going to be our second area that we want, and so you're gon na see that our a phase just travels straight across.

That's what makes this different than a typical transformer where you have isolated, primary and secondary. You can see the secondary and primary are directly connected on this a phase, but we have to make sure to connect everything exactly as shown here in order to have it work properly and we're definitely going to test the police. That's coming out of this transformer before we connect it to our actual unit, our marked as shown on the diagram. You just have all these connectors, so we have to connect them together properly, and so there we go.

I'm gon na get this right exactly according to the diagram figure C. Okay, so Jessie just showed me this he's only in the camera. For me, cuz I've always taken these all the way off, and then you got a like unthread these, but what he showed me is that you don't actually have to do that. You just leave them turn it on, and then it has a little indent in there, and so you can just take it off.

Like oh watch me, I'm gon na survive really poor baby muscles. This does work, you just don't take him away off and then kind of unthreads itself and I know that's stupid, but I literally never knew that because nobody ever showed me and now I showed you so secondary going out to - or I see him 493 and we've Got our high voltage primary coming in there? We need to wire this all up. According to I figure see you input side makes you drop down a little bit so right on the edge of unacceptable. At this point, let's see what we got going into the ICM 493 out of our buck blues transformer in buck mode wired up the buck.

There we go now. We are right there at pretty much created voltage, because this thing is - and you said rated at 230 - just sort of interesting. We left this disconnected just to make sure that we were gon na have the proper voltage before we fire up so we're gon na wire up and fire up now and see our line. Voltage is 237, better amp clamp on it, ready for it to run and we're gon na run test it, but 237, it's much closer to the rated voltage and now it gives us tolerance both ways, and we have this set up to plus or minus 10 %.

Now, which is gon na, put us a much more stable around as far as the rating of this carrier, the na8, so that's it using the bucking boost transformer thanks for watching.