I've been struggling to understand how economizers work for a while now, and this is by far the most in-depth explanation i've seen. Thank you so much for your help.

Fantastic , very good and profesional. Thank you sir

DAVID THIS IS ABSOLUTELY THE BEST ECONOMIZER TUTORIAL i HAVE EVER SEEN!! THANKS

Absolutely the best video I've ever seen on economizer troubleshooting and even describing just how one works. Very nice job!

Thanks for all the kind comments ya'll, This is my way of paying back/ forward what my Friend and Mentor Jim Schaper (Now Retired) did for me when he selflessly shared his vast knowledge and experience with me .. Special Thanks to "Jedi Jim"

WONDERFUL EXPLANATION!!!! Now I feel a little more confident working on these types of units.. Bravo!!

Hey David, I just want to appreciate the knowledge you have imparted to me. You are an excellent expert with extensive knowledge and a very good teacher who explains clearly. I now understand the Economizers, Thank you very much:)

Thanks dave. Nice diagram. Easier to understand than reading carrier literature.

Best economizer training video out there! Wow!! From your kitchen, no less.

When I was in the apprenticeship program, they never went over how that works. I was always so dam confused on how to troubleshoot that module. Now I finally know, thanks !

David, thank you kindly for the precise explanation of these economizer sequences. It’s the best explanation I’ve ever seen and it is much appreciated!

I wish there were more videos like this! Very informative!!! Thank you for putting in the time to do these videos!! 🙏🏽

Excellent video my friend very easy to follow and understand! Cheers!

thank you very much, exelent job sharing your knowledge!

Fantastic explanation with visuals.

WOW!!! just an amazing tutorial. The best I've seen on youtube. Thank you so much.

David your videos are incredibly informative, your videos help me beyond believe, keep em coming man thanks again my friend.

Great video brother 💯💯💯💯💯💯💯

Thank you for the great video 👍

Awesome awesome video!!!!! Thank you for your clear explanation! Awesome! Thank you!

This is a great video, I’ve come back to this video several times for a refresher while working on a economize.

Great Video,, very informal, thanks,,,

Great video

This is an excellent training video thank you

Awesome video, Thank you very much for sharing your knowledge...

Great walk through! Thank you.

Thanks for the video, David. Very educational indeed, sir more please and thank you

24 year tech. Consider myself a pretty good tech. However economizer has always kicked my ask. I always figure it out. Within 15 minutes I figured out an obsolete part. Thank you very much you are simple and very helpful.

I have never had anyone simply this in such a way that it actually makes sense.

Nice video ,keep them coming. Thanks

Great teaching and explanation. I enjoyed watching your videos & have saved several for future referencing. Thanks for sharing your knowledge.

great video . I don't work on rooftops a lot . today i worked on a carrier 2 stage RTU with a carrier economizer control . 2nd stage was not coming on . this video explains what happened and why it did. i wish I could keep this videos in my learning records LOl. this is gold . thanks

Great video really appreciate the knowledge thank you

I been looking for a good tech to explain more better on economizer and you sir are number 1 when explaining. I now have a better understanding because of how you explained it. Thank you🙏

Excellent video to bad it took so long for me to find it. Its straight and to the point. Congrats on this video.

This video is amazing and so helpful. I came back to it every time I have to look at one of these controllers. Thank you for taking the time to make this video and share your knowledge!

I’ve not had a bad economizer to troubleshoot; but, now I’m confident I can efficiently service one if a problem arises. Great overal understanding and traps for new players!

Dave Hart Thank you!!

Great work sir much appreciated it

Awesome video. Not much economizers down here in Florida so they can be a little more time consuming to figure out. Now I have a better understanding of them, thanks!

Hey David, thanks a lot for the video! Definitely not something you have to do but I am glad you put it up here. I am an apprentice myself and have worked with a few Mechanics now that would sometimes take the Y2 terminal off and tape it or put a marrett on it. I've spent a little bit of time playing with economizers to try and understand them and found that you did need the Y2 terminal. I didn't know however that the module actually communicates with Y2 and can still economize and use a compressor. So far I have been setting up a Time Delay on make with the unit to energize Y2 after Y1 has been energized for a few minutes. This might sound like a ridiculous step to take but it was all I knew haha. Anyways, thanks again for the video it was very helpful!

Very nice we all this kind of training. Thanks

Great lesson

Thx for explaining how economizer works.

Just found your channel. Excellent information

Very nice

Excellent explanation. Thank you

Amazing job first one in manyyyyy that helped me tz

Subscribed! Very well explained.

Thank you for sharing your knowledge with us.

Thank you! Saved so much time and frustration!

Excellent video Dave, Thank you. Grand Rapids, MI Griffin Hall

Thank you very much for sharing you knowledge I learned so much from you video.

Extremely good in5👍

great video thanks

Really great, thanks.

Amazing video! Thank you verymuch!

Great video, thanks.

great video. helped me out today. enthalpy sensor was mounted in unit. mounted outside unit on intake. started to work properly.

Great job 👍 thank you so much you made everything so easy to understand

Thank you so much. Now I understand. Great video 👍👍👍👍

The best explanation ever

Since parts are becoming less available for these you might consider a video on how to convert to Jade. The only functional difference is that you need to have the Jade module powered all the time. Not just on a live G signal.

Great video and detailed explanation. Much easier to follow than the OEM explains. When economies fails, most just pull the connector and install the jumper to eliminate the economist because the customers don't want to pay for these expensive option repairs especially when the anted of return is usually less than the expense. Still think you missed your calling, should ,vet been a teacher. Your ability to communicate is excellent.

Thank you for sharing this. It helps me understand how it works.

Thanks a lot sir

Excellent video. I'm a sparky just getting into this stuff. And this helps a lot. Any insights on jade controllers? As a layman they seem to run similar to this but I camt figure out how to modulate the economizer enough to prevent positive pressure in this store.

very clear instructions, thx

i love this video and the way the teacher explains thx so much more videos please I m an apprenctice in canada hvacr

Thanks man huge help

Thank you!

Thank you sir.

Awesome video, thanks for sharing. What if your unit control board only has a y1 terminal and would you bring the y2 wire form tstat directly to your economizer?

Is the mixed air temp sensor drawn in the right place? other diagrams seem to show it located before the evap coil.

Good Stuff!! Thank You

thanks for this vid

solid tech information, really enjoyed this vid, you are a good teacher!!!!!!, what happened to the jule ???

Do you have to tell the thermostat that it is a 2-stage, even if it's a 1 stage? Or do you just have to run the Y2 wire as if it did have two stages? Great video. Very informative and thorough.

2 Words: THANK YOU

I used a 1 stage tstat on a unit with 1 compressor and an economizer.Will it bring on the compressor in the summer? Or do I need to change the tstat

So can you by pass it buy jumping 1 and 2? To force cooling?

also there's a power exhaust installed with no literature. can you recommend a site for the literature. it's a York. I can get model and serial if needed. thank you.

What if you put a jumper between y1 and y2 at the terminal strip? Instead of running a dedicated wire for y2

Could you explain the operation of the w7212 Logic when co2 sensors are connected to the aq and aq1 terminals. Does the co2 sensor take over even when free cool is available? Great video! It was very helpful.

David, Awesome video. You mentioned at the end that you can test some actuators with the 9 volt battery. Do you know which honeywell acuators are 9Volt or where I can find that out? I have a carrier unit with a W7212 mounted on top of the M7215a actuator. Thanks

Best tutorial I’ve seen

Thks !!!

if the cooling call is still unsatisfied even free cooling plus #1 mechanical cooling, how can we set the wire to start the #2 compressor, or this is impossible happen(i mean free cooling + #1 compressor #2 compressor ).

To test a compressor during spring maintenance can you jump 1 & 2 on the logic board to energize the compressor contactor?

Great video brother ..... Can you make a video on converting the W7459 OR W7212 to a Honeywell jade economizer controller

Why do you use blue at the oat

Great video! Definitely helps me understand economizer function a lot better. However, I’m more of a nacho cheese Doritos guy. Still, great video though.

Gotta say this is the best video ever. It would be hard NOT to understand

How do I save incase I forget

Question, how does G get energized without power on R (broken by G open contacts)?

🤙🏼

is the MAT sensor polarity sensitive?

I meant to say ( informative)

8:50-9:30 still confusing. why water will leak if only #2 evaporator work? the moisture into the air will condense on the surface of fin and flow down to the drain pan.

I think the most difficult thing to understand about this, is how did this receive 8 dislikes? What’s up my Brother from another mother!