Troubleshooting With Sat Temps, Superheat, & Subcooling! 5 Possible Problems!!

In this HVAC Training Video, Learn to Troubleshoot Why the Pressure and Saturated Temperature are so Low on the Vapor/Suction Line of a Running Air Conditioning System. With these 5 Scenarios, You can Test Your knowledge and Learn About Why the Indoor Coil and Tubing may be Frosting and Freezing, in Order to Fix the Unit. Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety.
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Information in this video is intended for educational purposes only. Any work related to the topics in this video should be performed by licensed technicians or by apprentices under the supervision of licensed technicians. AC Service Tech LLC is not responsible for any possible damages or injuries caused by the use or misuse of any information provided.
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[flyinghigh]

Best explanation of real world scenarios and descriptions here. I’ve been in this trade a little over 8 years, the last 5 90% service. The legit pages like yours helped me understand this broad trade not only quicker but much more clear. Up and coming new techs installers, or experienced ones, listen to this Man! One of the Best instructors out there and he’s delivering it all for free. I’d say most of us only work so we can make some dang money, and the more knowledge you have, the more you’ll make.
Thank you for the continuous content!’

[keepthinking]

As a technician of 27 years, I still love watching these videos and it's weird when I was just talking to one of my co. Workers who's trying to get into air conditioning. We had almost the same numbers on a unit on the roof and I questioned him on what could cause that.
And this brings me right to the point. If it's rainy and you're doing fresher intake and with no return. If you've got 60 to 65° outside there and you're not moving too much air across that coil. Because most of the supply registers are closed, you're gonna freeze. And it's amazing that within a few seconds of seeing the numbers on the gauge, I already knew what the problem was. It's like they always teach if you can see what's going on inside the unit in your head. You can add anything you want and take away any part you want. And it still makes no difference to your. Knowledge

[marcosylvia]

You are truly a blessing Craig. Thank you so much for clearing this up. I ran into this problem just this week and it turned out to be low heat load. Thank you again.

[djaudioxtc]

Something to add for the new guys…. If u run into an EEV system with a single stage outdoor unit (ie tam9 with XR condenser) do not assume it’s low when you start it up and see 80 psi suction, give the valve and sensors some time to do their thing.

[Necro_AAAARon]

Brother, you are a gem. Thank you for providing this invaluable service to techs and wanna be informed home owners.

[glennsepelak]

I've been in this for 40 years. You do a very good job, son

[geminicam]

Thanks, Craig! Currently learning how to service condenser units in school and this helps a ton!! Appreciate everything you do!

[scoobtoober]

Just checked my r22 system, sat of 10 deg. No wonder it would freeze. Thanks for all of you help over the years. i'm finally swapping out my old system. Going all the way, inverter aciq, their 2 stage furnace and coil (built in txv). Wish me luck. Your tips over the years helped me get my 608 for sure.

[GoPappy]

It is a real pleasure listening to your concise/thorough explanations for each topic you cover and how you tie each relevant piece together. Keep up the great work and videos

[chrisguillen]

Man you have helped me tremendously! Been doing this almost a year and I understand a lot of it coming from mechanical industry. your videos help me absorb the hard concepts like this. Doing furnaces in the winter is cake but ac is a wild animal. Thank you for sharing your knowledge!

[bikerbobcat]

About to get back out in the field after a while stationary. Good refresher!

[deanmartin]

Excellent video Craig. You have seriously made me a better tech over the years. I’m subscribed to about 50 different HVAC techs on YouTube and maybe one or two actually ever check superheat. Usually they always shoot for 20° of superheat. I always, always check superheat when I have a piston. Thanks for everything you do. John Jennings is another excellent teacher. There’s a few of you out there.

[zahedaminullah]

Amazing video, well explained. No one makes better videos than you. Keep up the great work Craig!

[muhammedjaved]

Your are supper amazing technician on YouTube please make video on walk in freezer

[NorCal-refrigeration]

When in doubt weigh it out. Jonny Cochran of HVAC. 🤘⚡️🤘✨✨✨

[joebutlerv]

On hard to diagnose systems,
I like to Reclaim and charge system to a calculated weigh in charge.
That way you have a reliable base line to work from.
Don't worry about drift on 410 it's negligible

[descalante]

I’ve seen wild head pressures and subcool due to sensing bulbs secured on brazed joints or loosely.

[junkyardjedi]

A B C !
Air Before Charge !
Always check for proper cfm/ static pressure before adjusting refrigerant!

[l.crossjr]

Love these videos with these scenarios

[dalalmanjit]

Very very nice sir
Thank you very much sir