System not cooling |TRANE TAM7 AFC board | HVAC

Got a call about a no heat/ no cool situation, checked over the system operation and sequence and determined that the TAM7 had a bad afc board that would intermittently drop power in and out to the EEV. Installed new board and checked over system. #hvac #hvaclife #trane #skilledtrades #bluecollar #itshardtostopatrane #milwaukeetools #testo #fieldpiece #veto #mb3

[@waynecarr9150]

Omg, thank you so much for the board testing with sequence and voltage needs. A total lifesaver. God bless

[@KoolinwithKrauss]

Perfect!!

[@chevymom9776]

Like how you explain the process of determining how to find the problem

[@KoolinwithKrauss]

Why thank you! These TAMs can be a handful

[@juicefanlikehim1682]

I just had an American standard Tam 7 no cool on 8/30/24 shows me 10 flash fault code - low super heat with That the sensors are not calibrating and EEV stuck open , due to a possible leak 😩 I go back next week for more time there , I’m studying The system so much I think I may be able to get it , thanks for this video ! Gives me more confidence I go back

[@KoolinwithKrauss]

Good luck hope you can find it all! Some times you can manipulate the stepper on the eev to a 50% open, if you disconnect the orange sensor (gas temp) it should put it in that mode I could be mistaken. You can also drive the stepper open watch you pressures and remove stepper and see what it does also. The is this great website by Trane that has videos on every error codes and solution out there but I can’t find it anymore if I do, I’ll link it 👍 💪

[@siddadood]

I’m glad you posted this. I’m watching ti learn the proper way. My company would just change the part and not look into it. I’m just getting my experience so I can find a more thorough company.

[@KoolinwithKrauss]

absolutely! it is best to find where it failed and why it failed when able to.. appreciate the support! You will find the right company 🤙🏼

[@Carlos-z8t]

This was exactly what i was looking for! How to reset the board. Thank you!

[@KoolinwithKrauss]

Awesome! Glad it helped 👍🏻

[@jcjpjvcd]

what a pain in the butt those are i have one of those in the attic the unit under warranty, I order all parts no time for that nightmare good job I learn something today

[@KoolinwithKrauss]

Definitely can be a headache 🤦🏼‍♂️ glad you were able to get something out of it 👍🏻

[@chainoflakesrefrigerationa2906]

Great video

[@KoolinwithKrauss]

Thanks man!

[@tomwardzala4240]

Good work, keep it up 👍🏻

[@KoolinwithKrauss]

Thank you, I appreciate it!! 👍🏻

[@optionstraderman]

Wow, your tunes in the last minute blew out my ears, holy crap dude... Your voice audio was a little low during the video, so I had to turn volume up a little more than usual to hear ya, and then BOOOOOOMMMMMM, ear splitting music!!!!!! Now I'm afraid to watch any more of your videos for fear of blowing my speakers out.... wow!!!

[@KoolinwithKrauss]

🤣 ya you may be in for some more ear busting tunes so might be best to stay away if your sensitive to those sort of things!!!

[@elijahgoodman3140]

Hello, can you take a couple of minutes to draw how the boards interact with each other and your sequence of operation for troubleshooting them. Would appreciate it truly.

[@KoolinwithKrauss]

I’ll see what I can do for ya! Haven’t had to deal with Trane in awhile, and they’ve reengineered their tams!

[@user-hu4hx6bm6m]

Keep doing Trane videos

[@KoolinwithKrauss]

Appreciate that! when I come across them most definitely will 🤙🏻

[@cdf6333]

Thanks a ton!, or 12000 BTUs as you guys call it

[@KoolinwithKrauss]

awesome!!! Lol I love that 🤣

[@user-hu4hx6bm6m]

Good video but electronics don't like humidity environment like AC does . AC manufacturer's just think about make AC more complex and less durable

[@KoolinwithKrauss]

That tends to be the name of the game now a days. And only getting worse for sure!

[@christianaguilar5486]

I’m having trouble with the Pm module not being configured right and I can’t find any information on it

[@KoolinwithKrauss]

May have a bad PM, if they get taken out from surge or something can be problematic! Had one recently and was 60 days back order

[@The12stonesfan]

I've been in HVAC 6 months now and man the communicating systems are a mess thats for sure. I don't work on too many of them but everytime I do I have hell man. Luckily my boss man is only a phone call away haha. I don't understand why people get them things but oh well I guess if you want to be fancy thats what you do, them things so expensive. Plus anytime I had to get a part its very expensive

[@KoolinwithKrauss]

You’ll get a hang of it for sure 🤙🏻 they definitely can tricky, and really every brand is different on how the communicate. As long as you have the literature and have either or boss or tech support (don’t hesitate to call tech support) then you’ll be fine. They are expensive but they can be very efficient and dehumidify and get the the “comfort” level in a space much more desirable then a single stage 14 seer. Very expensive tho and getting parts feels like forever sometimes.

[@The12stonesfan]

@@KoolinwithKrauss I'm sure I'll get the hang of it, for me it's just that not everyone has them and we generally see them in the high affluent areas. So we don't see them on a regular basis. I pretty much know my straight cool condensers/heat pumps down pat, maybe I'll get stumped on a few occasions. But for the large part I'm ok with them. But them communicating units are a whole different beast. My boss man puts it this way "They're great when their working, but a pain in the ass when they don't"

[@justinbeam81]

Hey how did you learn to work on these trane units? I can’t seem to find any info on them? Great videos btw keep up the great work

[@KoolinwithKrauss]

A company I worked at did a high volume amount of installs with the communicating systems with a variation of the ahu and condensers. And was trained while working there! Appreciate the feedback!!

[@DougFL66]

I had 14 red flashed and I flipped jumpers and it fixed it But now once awhile I get 15 red flashes on the EVC and 5 red flashes on the AFC. I shut power down and the 15 fixes itself but the 5 on the AFC is still happening. The 15 on the EVC says its configuration fault check PM error. What's that?

[@KoolinwithKrauss]

I’d have to get back and look into them, haven’t messed with them in a few years!! I’ll look into my books and see what it is, usually see something like that I want to say the gas temp and coil temp sensors! But could totally be wrong

[@ReelObsession904]

Just got stuck on a call with this exact problem

[@KoolinwithKrauss]

How did you make out?! New board?

[@Ricoswavaey]

The valve that was closing and restricting itself you talking about the EEV?

[@KoolinwithKrauss]

Yes

[@DTay312]

Do you have any tips to reset the AFC board? I have tried to hold down test for 15 seconds and then cycle power like the service facts say but the fault lights come back.

[@KoolinwithKrauss]

Sounds like you need a new afc, or it’s alerting you of something else

[@DTay312]

It's saying to check the EEV board and EEV board says the GT sensor is out of range. So I replaced the board and both the sensors (ET and GT) but it still says GT out of range. Thanks for replying.

[@bosserman1964]

Good repair BUT your tool bag is a overkill go lite. also the only meter you need to rock is Fluke...

[@KoolinwithKrauss]

I did end up kind of downsizing my bag we a lot less for sure! But man your right I want a fluke just have pulled the trigger I think just the 902 I might get

[@bosserman1964]

@@KoolinwithKrauss Just go with the 324 it will do the job. but i also rock a 179.

[@rkb4192]

I have a TAM7. Last night drain overflowed and the system shut down. There is no float switch on my unit. Water ran down to the door switches and the DC power supply. AFC and EVC boards will not come on. Does the DC power supply enable this?

[@KoolinwithKrauss]

Oh no! There’s a board in the blower compartment that sends the voltage to the corresponding boards. Double check the transformer as well verify proper voltage to 240 and 24.

[@rkb4192]

Will do thanks.

[@hoover783]

How much did that cost the home owner?

[@KoolinwithKrauss]

Don’t remember off top of my head, was under warranty tho 👍🏻 I’d say maybe between 200-400 with dispatch fee

[@bkluntz]

How do you know what the reading should be?

[@KoolinwithKrauss]

From the manufacture. That what trane states so that’s what I ride with 👍🏻 lol

[@bkluntz]

Just asking because my manager had me order the AFC, Distributor, and EEV Board plus the harnesses, still waiting on parts. I can do light service, is above my knowledge, so it’s good to find tech post these vids.

[@KoolinwithKrauss]

@@bkluntz for sure bro! Yeah with the TAM cabinets it’s all about resistance values and voltages. Generally if you can find the service facts (which is never by the unit 😂) but I deal with a lot of these and come across the problem frequently! It’s good to find this stuff and see it to

[@robertestrada3053]

meaning of flashing led codes top red led flashes 11times bottom red led flashes 7 times thanks

[@KoolinwithKrauss]

So with the 11 flash that’s going to the tell you to look at you EVC board and with the 7 flash off the “bottom” board you evc board its going to be significant to high superheat or restriction. What your need to do is check to be sure your stepper is responding to the board and that the GT and ET sensors resistance are within range for proper ambient temps. (In manual) and then verify that the stepper is rotating valve properly. Generally speaking from experience it tends to be a bad sensor that is sending wrong to board which tells the valve to close. Hope this steers you in the right direction! 🤙🏻

[@robertestrada3053]

@@KoolinwithKrauss thanks ill show this to the tech where cn i find the meanings of the led flashes, tech has no idea

[@KoolinwithKrauss]

@@robertestrada3053 mostly your going to find in the service facts manual. Or you can try fieldtechhelp.com I’ve gotten some books from trane that have the literature. Just from experience and seeing frequently, muscle memory

[@robertestrada3053]

@@KoolinwithKrauss thanks will check it out

[@frankcloskey7789]

Excellent trouble shooting. 8/7/2022yr

[@KoolinwithKrauss]

Much appreciated 🙏🏻 thank you!

[@hliz8818]

Bud where can i get training for Trane

[@KoolinwithKrauss]

I worked at a company that were “Trane comfort specialists” and got training that way. If your with a company and have access with Trane and distributors, then you should be able to do the classes, they do a lot of zoom ones now 👍🏻