Wow. Out of all the countless videos I have seen. This guy kills it. I spent hours watching other videos that I thought where great but took me so long to understand certain aspects. But after watching this I learned it all instantly. Maybe it’s the simple drawings? Ether way. Thank you so much.
Thank you, but YOU are responsible for all of that. You made the decision to change your life, you worked hard threw school, you worked hard to build the career. I'm just thankful I had the opportunity to be a part of it.
I love your videos. From my experience, not only is a leak responsible for low refrigerant, but techs before me, did not add enough and take into account the long line set. It never had enough refrigerant to begin with. I have seen this a lot.
Excellent explanation of why the indoor coil freezes. I wish I had this clear of an explanation when I started out many years ago. You touched on what many technicians do to try and solve the problem by overcharging the system. The only thing I would add is that by overcharging the system you back up liquid into the condenser coil and turn a high-efficiency unit into a low efficiency unit and the customer is now paying a higher electric bill.
Good tip on cleaning the evap coil AT THE SAME TIME as your condensor if they're both dirty. Didn't think about the effects of that but it makes sense !
Phenomenal segment on freezing. You have got to be one of the best teachers I have come across in this field. You leave next to no stones unturned. Anyone interested in this field who comes across these videos is fortunate.
Best video regarding freezing evap (although no fancy pics used) Most others I’ve seen never mention the low temperature problem. And the explanation that low pressure causes low SAT temp is easy to remember. Thanks Ty. May God continue to richly bless you!!
Learned more in 23 minutes than a week's worth of study. A great instructor has a wealth of information, actual experience, and most importantly the ability to convey their thoughts into a form others can understand. Thank you! Although I did have to chuckle at "dethaw" which literally means to refreeze, although it is recognized as dialect and a completely acceptable word.
Greetings from Dubai. Ty's lectures initiated me in learning more in HVACR. These classroom sessions are very informative. I really credit him and Brian Orr for imparting know how in the field with a seasoned technicians insight (which is very unique for an engineer like me).
Thanks for the video. The way you explain and the way you teach is fantastic. This the best video watched on HVAC basics on coil freezing. You also have your awesome experience and stories to share and teach. Thanks. Peace😊
excellent explanation Ty. I've been an HVAC/R contractor in TX and AZ for over 25 yrs. Great job and thanks for sharing. Great teaching and positive presentation!
No AC system shoud be set bellow 70, thank you Mr. Ty i keep saying this to my commercial bulding's Tenants, and no one listen, next time i'll forward this video as answer for them emails, Thank you thank you thank you.
Great explanation ! Had a frozen coil on a up flow unit located in a 3 story finished daylight basement home. Return air ducts on all 3 floors. Return air in finished basement was 63 degrees ! Covered that return to allow only return air from 2nd and 3rd floors and problem solved ! Duct work was sized OK so no worries on covering that one return grill.
I'm studying HVAC/R at a community college and when I get home I look to see what Ty has to say on what I've studied that day. This guy is awesome. I'v learned a substantial amount more on his videos then I have in class. All I need is my certs from school.
school is great for introducing topics and youtube is great for actual understanding. our youtube community in hvac is truly blessed. Hvac school and AC service tech are also inedible.
i watched you and subscribed you explain very clearly thankyou what is sad to watch is a teacher talk for 1 hour and not 1 student can answer a question
Hi ty you are my favorite teacher I appreciate for you video it is excellent . But I hope if you write down the four seasons that make the system get freez ...
the reason is Saturated temperature is below 32F (0C) #1 cause airflow Dirty or restrictive filters, dirty blower wheel, bad blower motor, blower motor set to wrong speed, bad blower capacitor or wiring, bad blower relay, stuck compressor contactor, weong blower whel, blower cut of plate missing, dirty evaporative coil, Return air too small or restrictive, Supply ductwork crushed, damaged or improperly ran, too many vents closed. #2 Temperature Indoor temperature too low, Outdoor temperature too low without a low ambient kit #3 refrigerant restriction Cloged filter drier, too many filter driers, kink in the liquid line, liwuid line valve not fully open, screen befor the metering device cloged, metering device pluged or blocked, TXV power head lost charge, TXV stuck closed, TXV overheated and bent pin, Something inside the liquid line #4 Low on charge Find the refrigerant leak. This should be the last thing after everything else is eliminated. DO NO GO OFF SUCTION PRESSURE! Go via superheat and sub cooling. Many people use this as a fix when its really one of the other ones and it does stop it from freezing but ends up damaging the compressor later on.
HVAC Doctor, the system is contingent upon everything being clean & functioning properly really. Cleaning the interior air handler coil & exterior unit condenser radiator go hand in hand. I hate those paper filters, give me the electrostatic metal washable ones every time. Then the only thing that can fray for debris is the air handlers panel insulation. I've been using the metal one's for 4+ years, flushing the drain tube it took me a few minutes to realize that the pulpy debris was the panel insulation and that nasty mucous for bacteria & mold. I knew I had flushed it good 4+ years back when I converted to the metal air filters. The metal one's cost more, but buy 2 and you can rotate them, using a clean filter & rinsing the filthy one back to clean. The coil was pretty clean, outside of the galvanized steel cover that has rust for a 15 year old Heat Pump system in East coastal Central/North FL. Been a learning experience for sure.
Hi good day very good video well explain I been working on a split 5 ton unit cleaned it both inside and outside clean the blower fan and filter and noticed it was still freezing
Once a customer has a frozen AC which only happened at night. It turned out the compressor contactor sometimes wouldn’t disconnected but inside blower motor stopped. At day time the temperature was high and the AC was running most of time, so AC frozen was not so bad, but at night the blower motor stopped longer time and the frozen ice reached out up to compressor.
Awesome video - super clear explanation. As I'm currently experiencing this issue, one thing I don't quite follow. In my case, the temperature at the ducts was about 60 degrees, and the coil was starting to freeze at the 1 hour mark (reduced flow), and complete freeze (no flow) at 2 hours. Tech came and recharged the system, said it was about half charge (added 4 lbs, R410A system). Ducts then blew at 57 degrees, and system worked great for 3 weeks without freezing up. Now the coil is freezing again, and duct output is 65 degrees (before coil freezes). Actually worse (higher) output temperature than initial problem - unclear of fault. But what is confusing to me is if the ducts are blowing out at such high temp (nowhere near freezing), how is the coil freezing?
Part 1 Temperature pressure relation. As the pressure drops the boiling point of the refregerant drops. Look up a pt chart for the refregerant you have and you can see the pressure temperature relation. Part 2 quantity Just because the temperature is low to start freezing does not mean there is enough quantity. Less refrigerant means less quantity, less capacity. It does not have the volume of boiling refregerant to absorb enough heat to drop the air temperature. Instead of an sir conditioner, it turns to an ice maker. Check out my play list learn hvac hvacr. It explains all the concepts that lead to this point.
Thank you for your ever giving knowledge..In UK here and still and apprentice. I am struggling to understand the concepts behind Delta T and DTD since the unit used in most US lecture contents is Fahrenheit..shall I keep it simple then that all AC coils are designed to have Saturated vapour temperature of 😮4 deg Celsius!!!! I'm this case 75 deg F( 23.9Celsius)Return ----40degF(4.4Celsius) SVP/T equals to 20Deg Celsius Set point!!
We use to do new installing when they froze we put a 32degre temp sensor on the suction line if we had problems by the compressor. Never had a problem doing that 😉
Hi Ty. Great videos. Congratulations. I've seen refrigerant charging procedures following the SH/SC criteria and when the system is overloaded or near to be overloaded the discharge line coming from evaporator starts to freeze and most of the times the ice runs on pipeline and ends up in the compressor suction. This is with a cleaned system free of cloggings and damages. Why could this be happening?
What is the lanyard you're wearing that creates the beeping noises? It seems to prompt you to bring out closer to the camera each time it goes off. Why? Thanks and great instructional video!
Hi man this is a very very good video of very informative but I have another question for you if you could take the time to answer I recently replace the capacitor and the condenser fan on my unit but for some reason. Condenser fan keeps on running after the compressor shuts off what can be causing that can it be lack of Freon or back fed from somewhere thank you in advance hope to hear from you
Excellent video, sir, is it possible to close TXV completely to stop the liquid refrigerant flow to the compressor when the load on equipment is very low.
@VicPapefu Thank you very much, here load means heat load on the evaporator coil. If it is low because of the restriction of airflow on the evaporator coil, will it cause txv to stop the refrigerant flow to the compressor?
What about freezers? If we need temperature below 32F in a freezer we need to have eveporator below 32F as well. So the only way to prevent freezing up eveaporator - it's just dry air and defrost system. I did see all your videos but I will :) Thanks a lot, you are really talented teacher!
This was just for air conditioning. Refrigeration has more components. Automatic pump down with solinoids, liquid receivers, and suction accumulators, and how bent kits. Refrigeration has the fins spaced father apart to allow ice accumulation without blocking airflow. The fins are also thicker aluminum to handle frost formation. 1st fridge above 35F uses off cycle defrost. Refrigerant pumps down and the fans stay on The air above 32 melts the ice and also provides cooling for the unit Below 35 uses defrost trimmers. Method one is electric elements similar to ovens. Method two is hot gas defrost. Taking hot gas from the compressor bypassing the condenser and dumping after the metering device directly into the coil to defrost.
6:38 There is another reason the customer is low on refrigerant. The technician before you didn't have low loss fittings on his hoses and had a negligent discharge while removing them.
Watching your videos is like watching a good movie. This is my 2nd or 3rd time and I never get bore. Thanks a lot
Smartest man on RUclips teaching HVAC.
Has helped me tremendously
My AC froze up yesterday. Thanks for the video. Now I know you aren't supposed to set the temp to 68 and close half the vents hahaha!
Wow. Out of all the countless videos I have seen. This guy kills it. I spent hours watching other videos that I thought where great but took me so long to understand certain aspects. But after watching this I learned it all instantly. Maybe it’s the simple drawings? Ether way. Thank you so much.
wonderful explanation; best instructor
Ty is the best teacher ever, I owe him the job I have today and the fact that I can provide for my family and have a decent life. Thank you Sr !!!
Thank you, but YOU are responsible for all of that. You made the decision to change your life, you worked hard threw school, you worked hard to build the career. I'm just thankful I had the opportunity to be a part of it.
@@love2hvacGood teachers are still worth their weight in gold!
Outstanding recommendations about the dirty coil service.
You are the best teacher , makes learning technology with fun.
I love your videos. From my experience, not only is a leak responsible for low refrigerant, but techs before me, did not add enough and take into account the long line set. It never had enough refrigerant to begin with. I have seen this a lot.
respect Boss your are the best teacher on my eyes, your teaching method very easy, thanks sir, this mohammad harun from doha, Qatar ❤❤❤❤❤❤❤❤
May God bless this man , you're a blessing to humanity
thank you from an hvac dispatcher. i always love learning more about what i do.
Excellent explanation of why the indoor coil freezes. I wish I had this clear of an explanation when I started out many years ago. You touched on what many technicians do to try and solve the problem by overcharging the system. The only thing I would add is that by overcharging the system you back up liquid into the condenser coil and turn a high-efficiency unit into a low efficiency unit and the customer is now paying a higher electric bill.
Thanks Bill and you are 100% spot on about staking liquid in the condensor reducing efficiency. I need to do an update.
i am not an HVAC guy but i feel like i could pass for one after all this info. Thank you!
Thank you
Thanks for the lecture better than my Instructor at hvac school. And no interruptions from students
This was a great lesson. I still have no idea why my system is freezing but at least I know why it happens! 😅 ty sir.
This is absolutely the BEST HVAC video for learning the system that I have ever seen. Thank you Mr Branaman!
Great explanations. I’m nursing two 21 year old units and knowledge helps!
Excellent lecturer. true professional. Second to non. Very rare this days.
Good tip on cleaning the evap coil AT THE SAME TIME as your condensor if they're both dirty. Didn't think about the effects of that but it makes sense !
Phenomenal segment on freezing. You have got to be one of the best teachers I have come across in this field. You leave next to no stones unturned. Anyone interested in this field who comes across these videos is fortunate.
Best video regarding freezing evap (although no fancy pics used) Most others I’ve seen never mention the low temperature problem. And the explanation that low pressure causes low SAT temp is easy to remember. Thanks Ty. May God continue to richly bless you!!
Thank you, I will update it one of these days. God is great!
This dude is fuckin awesome! 💯💪🏾
Learned more in 23 minutes than a week's worth of study. A great instructor has a wealth of information, actual experience, and most importantly the ability to convey their thoughts into a form others can understand. Thank you! Although I did have to chuckle at "dethaw" which literally means to refreeze, although it is recognized as dialect and a completely acceptable word.
Greetings from Dubai. Ty's lectures initiated me in learning more in HVACR. These classroom sessions are very informative. I really credit him and Brian Orr for imparting know how in the field with a seasoned technicians insight (which is very unique for an engineer like me).
Thanks for the video. The way you explain and the way you teach is fantastic. This the best video watched on HVAC basics on coil freezing. You also have your awesome experience and stories to share and teach.
Thanks.
Peace😊
excellent explanation Ty. I've been an HVAC/R contractor in TX and AZ for over 25 yrs. Great job and thanks for sharing. Great teaching and positive presentation!
Mr. Conor McGregor thank you so much for all your videos, the way you explain is just great !!!!!!!!!
Man’s gotta stay cool when he kicks so much ass.
Wow, great explanation!!! I don't remember my instructor gave this much detailed explanation. Thank you!!!
No AC system shoud be set bellow 70, thank you Mr. Ty i keep saying this to my commercial bulding's Tenants, and no one listen, next time i'll forward this video as answer for them emails, Thank you thank you thank you.
I most say I graduated in 2018 and I’m always watching ty’s videos. Awesome teacher and a great person.
Great job Ty! Only someone with your knowledge and Passion could explain things this way!
Love how simple you make it for a beginning technician to learn and understand what he is learning.
Amazing how you teach. So knowledgeable 👍🏻Thanks!
This is GOLD! Great job sir! And I appreciate you for making this video and summarizing it up! 🔥💪🏽
Great video. I need to find a way to get to my evp coil to try to clean it. Unfortunately it round coil duck work.
does your coil has a door to access it?
Great explanation ! Had a frozen coil on a up flow unit located in a 3 story finished daylight basement home. Return air ducts on all 3 floors. Return air in finished basement was 63 degrees ! Covered that return to allow only return air from 2nd and 3rd floors and problem solved ! Duct work was sized OK so no worries on covering that one return grill.
man what of great video, lots of information out of one video God bless you than you very much
Always great information. Thank you so much!.
I could be watching Netflix during shelter in place, yet here I am watching all of Ty's videos.
A much better use of your time.
Thank you Ty
here I am a year later watching the same video.
Great Content!!!keep the good work!Waiting for your new videos 👍
This guy is an awesome teacher. Two thumbs up.
I'm studying HVAC/R at a community college and when I get home I look to see what Ty has to say on what I've studied that day. This guy is awesome. I'v learned a substantial amount more on his videos then I have in class. All I need is my certs from school.
school is great for introducing topics and youtube is great for actual understanding. our youtube community in hvac is truly blessed. Hvac school and AC service tech are also inedible.
Ty is so badass he took Chuck Norris' beard away from him and now wears it just to mock him.
Haha..Yep!
Agree
Cheers Ty Thank you
You’re brilliant at your job 🙏🏼❤️🙏🏼
best teacher and A to Z nice explain
Wow loved this, especially the final segment (cleaning inside and outside)
Thank you so much for your times and videos.
Excellent explanation!
Now I comprehend why the evaporator freezes when there is low charge in the system. I finally got . God bless you, you're an awesome instructor!!
Thank you for the great content. Quality information like this is much appreciated by someone like me learning the trade.
Much better description, than most others.
I learned this 30 years ago, and this was a great refresher. These students are getting there money's worth from this course.
i watched you and subscribed you explain very clearly thankyou what is sad to watch is a teacher talk for 1 hour and not 1 student can answer a question
Best teacher in the whole wide world
I totally agree!!!.
I agree
Excellent teacher
Mr. That was an excellent explanation thank you so much
Hi ty you are my favorite teacher I appreciate for you video it is excellent . But I hope if you write down the four seasons that make the system get freez ...
the reason is Saturated temperature is below 32F (0C)
#1 cause airflow
Dirty or restrictive filters, dirty blower wheel, bad blower motor, blower motor set to wrong speed, bad blower capacitor or wiring, bad blower relay, stuck compressor contactor, weong blower whel, blower cut of plate missing, dirty evaporative coil, Return air too small or restrictive, Supply ductwork crushed, damaged or improperly ran, too many vents closed.
#2 Temperature
Indoor temperature too low, Outdoor temperature too low without a low ambient kit
#3 refrigerant restriction
Cloged filter drier, too many filter driers, kink in the liquid line, liwuid line valve not fully open, screen befor the metering device cloged, metering device pluged or blocked, TXV power head lost charge, TXV stuck closed, TXV overheated and bent pin, Something inside the liquid line
#4 Low on charge
Find the refrigerant leak.
This should be the last thing after everything else is eliminated. DO NO GO OFF SUCTION PRESSURE! Go via superheat and sub cooling. Many people use this as a fix when its really one of the other ones and it does stop it from freezing but ends up damaging the compressor later on.
@@love2hvac
Thx a lot Ty
All teachers should be as good as you. Teaching is all about being able to communicate...
If students don't understand it's the teachers fault..
This is great!!! Thanks our server room AC just froze over and last night was the super cold compared to any other night recently.
HVAC Doctor, the system is contingent upon everything being clean & functioning properly really. Cleaning the interior air handler coil & exterior unit condenser radiator go hand in hand. I hate those paper filters, give me the electrostatic metal washable ones every time. Then the only thing that can fray for debris is the air handlers panel insulation. I've been using the metal one's for 4+ years, flushing the drain tube it took me a few minutes to realize that the pulpy debris was the panel insulation and that nasty mucous for bacteria & mold. I knew I had flushed it good 4+ years back when I converted to the metal air filters. The metal one's cost more, but buy 2 and you can rotate them, using a clean filter & rinsing the filthy one back to clean.
The coil was pretty clean, outside of the galvanized steel cover that has rust for a 15 year old Heat Pump system in East coastal Central/North FL. Been a learning experience for sure.
Someone who knows what they're talking about. Good Video
Another brilliant video, Thank you !
Brilliant and outstanding presentation.
Many thanks!
Very informative video. Thank you for sharing.
Best explanation 👍👍
Great explanation. Thank you
Well explain and needs to stay like that. 👌
Simply super and doing the great work
Thanks
Thank you
20:40 Wow Thank you Mr. Ty Branaman!
Hi good day very good video well explain I been working on a split 5 ton unit cleaned it both inside and outside clean the blower fan and filter and noticed it was still freezing
Once a customer has a frozen AC which only happened at night. It turned out the compressor contactor sometimes wouldn’t disconnected but inside blower motor stopped. At day time the temperature was high and the AC was running most of time, so AC frozen was not so bad, but at night the blower motor stopped longer time and the frozen ice reached out up to compressor.
Awesome video - super clear explanation. As I'm currently experiencing this issue, one thing I don't quite follow. In my case, the temperature at the ducts was about 60 degrees, and the coil was starting to freeze at the 1 hour mark (reduced flow), and complete freeze (no flow) at 2 hours. Tech came and recharged the system, said it was about half charge (added 4 lbs, R410A system). Ducts then blew at 57 degrees, and system worked great for 3 weeks without freezing up. Now the coil is freezing again, and duct output is 65 degrees (before coil freezes). Actually worse (higher) output temperature than initial problem - unclear of fault. But what is confusing to me is if the ducts are blowing out at such high temp (nowhere near freezing), how is the coil freezing?
Part 1
Temperature pressure relation. As the pressure drops the boiling point of the refregerant drops. Look up a pt chart for the refregerant you have and you can see the pressure temperature relation.
Part 2 quantity
Just because the temperature is low to start freezing does not mean there is enough quantity. Less refrigerant means less quantity, less capacity. It does not have the volume of boiling refregerant to absorb enough heat to drop the air temperature.
Instead of an sir conditioner, it turns to an ice maker. Check out my play list learn hvac hvacr. It explains all the concepts that lead to this point.
Thank you so much for all of your videos
I was lucky to have him as a teacher in ATI miami
Very detailed explanation. Thank you
Good simple explanation.
Can you also speak on having an oversized A/C unit. this will also cause an A/C to freeze
Thank you for your ever giving knowledge..In UK here and still and apprentice. I am struggling to understand the concepts behind Delta T and DTD since the unit used in most US lecture contents is Fahrenheit..shall I keep it simple then that all AC coils are designed to have Saturated vapour temperature of 😮4 deg Celsius!!!! I'm this case 75 deg F( 23.9Celsius)Return ----40degF(4.4Celsius) SVP/T equals to 20Deg Celsius Set point!!
My AC is frozen now, Ty!! This is so helpful!!
Thanks, Nice explanation.
We use to do new installing when they froze we put a 32degre temp sensor on the suction line if we had problems by the compressor. Never had a problem doing that 😉
Yes that is the freeze stat I was talking about.
This guys a genius🙏🏽
Im currently taking the online class but this guy is good
Scanner Paul Danner for troubleshooting cars and Ty for refrigeration. The ones to watch.
Good explanation.
Incredible video man!
wow, that was impressive! thank you
Hi Ty. Great videos. Congratulations.
I've seen refrigerant charging procedures following the SH/SC criteria and when the system is overloaded or near to be overloaded the discharge line coming from evaporator starts to freeze and most of the times the ice runs on pipeline and ends up in the compressor suction. This is with a cleaned system free of cloggings and damages. Why could this be happening?
What is the lanyard you're wearing that creates the beeping noises? It seems to prompt you to bring out closer to the camera each time it goes off. Why?
Thanks and great instructional video!
Usually means the lanyard sensor disconnected from the rotating tripod head. I have not used it in a few years.
Great explanaition
Perfect information. Thanks a lot.
He is such a great teacher ❤️
Incredible video, thank you
Hi man this is a very very good video of very informative but I have another question for you if you could take the time to answer I recently replace the capacitor and the condenser fan on my unit but for some reason. Condenser fan keeps on running after the compressor shuts off what can be causing that can it be lack of Freon or back fed from somewhere thank you in advance hope to hear from you
wired incorectly
Excellent video, sir, is it possible to close TXV completely to stop the liquid refrigerant flow to the compressor when the load on equipment is very low.
@VicPapefu Thank you very much, here load means heat load on the evaporator coil. If it is low because of the restriction of airflow on the evaporator coil, will it cause txv to stop the refrigerant flow to the compressor?
Good job man 👍👍👍 keep doing this
What about freezers? If we need temperature below 32F in a freezer we need to have eveporator below 32F as well. So the only way to prevent freezing up eveaporator - it's just dry air and defrost system.
I did see all your videos but I will :)
Thanks a lot, you are really talented teacher!
This was just for air conditioning.
Refrigeration has more components.
Automatic pump down with solinoids, liquid receivers, and suction accumulators, and how bent kits.
Refrigeration has the fins spaced father apart to allow ice accumulation without blocking airflow. The fins are also thicker aluminum to handle frost formation.
1st fridge above 35F uses off cycle defrost. Refrigerant pumps down and the fans stay on
The air above 32 melts the ice and also provides cooling for the unit
Below 35 uses defrost trimmers.
Method one is electric elements similar to ovens.
Method two is hot gas defrost. Taking hot gas from the compressor bypassing the condenser and dumping after the metering device directly into the coil to defrost.
@@love2hvac Thank you very much for such detailed explanation 👍
Amazing tutorial!!!
Thanks 🙏🏾
6:38
There is another reason the customer is low on refrigerant. The technician before you didn't have low loss fittings on his hoses and had a negligent discharge while removing them.