Make up air unit not heating

power flame burner with flame safeguard lock out. return and outdoor air dampers hacked by others, let's figure out how it's supposed to work and set actuators properly.

[HughesManHVAC]

Awesome video Steve! Found myself invested in the diagnosis and commentary.

[jochemsluis]

Well done. I had a fault with the a/c system before Christmas and only open a few months and faulting out on super heat. It ended up the controller was set to wrong gas and compressor. Trying tech support was fun at this time. I was there when they weren't. I reprogrammed the controller and fine now.

[WillieMakeit]

thanks man really helped me understand the controls

[georgebrabec]

We have a lot of these here in Houston mostly

[jasonjohnsonHVAC]

Yeah buddy....great troubleshooting Steve...you took what it wasn't doing, combined it with what it should be doing and changed what needed to be changed to suit the customers need and have a safe and reliable operating system. Nicely done....you are a sharp dude and know your stuff

[kyleh]

Wow that air makeup is way cleaner than any of the junk I work on.

Access is always the worst on them. I've had to do some sketchy stuff to get into them. Good work!

[stevencossaboon]

Great job Steve. That thing was a effing mess. At least they found the right man to figure it out.

[Eddy]

Good little vid Steve-o and that was a good live stream the other night ... Thx ...

[georgebrabec]

Sorry lost it, they have basically a rack of compressors feeding a multi-circuit evaporator.
Some of them control the humidity from the outside air and have either gas or electric reheat. There are different manufactures other than Aaon. All of these are design build per engineer specs. No diagrams abd no way to get them. Great job, considering how you had to use an extension ladder to get to it.

[SoutheastHVAC]

That’s a sketchy unit to work on being so tall like that

[lowrybrock]

Does it break so often they leave a ladder laying there to work on it? Take care and stay warm out there.

[adamdnewman]

It takes a professional to take jaked hackery and fix it *right*

[carlseiz]

I swear when they put these systems in they don't think about when they need to be repaired I should be in a better location easier for you to repair

[ccthepope]

dang not only are you smart but brave also (to be up on that ladder in the ice)