Our Inverter Mini Split Resources: Mini Split Book on Our Website- www.acservicetech.com/mini-split-book Mini Split Paperback on Amazon- amzn.to/3ytHJSs Mini Split Paperback on TruTech Tools- www.trutechtools.com/BooksGuides?aff=8 Mini Split E-Book on Google- play.google.com/store/books/details?id=HN-iEAAAQBAJ Mini Split E-Book on Apple- books.apple.com/us/book/id6445178399 Our Single Speed and Two Speed Air Conditioning Resources: My Paperback and E-Book: www.acservicetech.com/the-book My Paperback: www.amazon.com/shop/acservicetech Read the book reviews on Amazon! Check out our new Articles at www.acservicetech.com/articles Support the Channel by purchasing tools through Tru Tech Tools! Use this link www.trutechtools.com/?Aff=8 Save 8% at checkout using code "acservicetech" Tool List- www.amazon.com/shop/acservicetech Support- www.patreon.com/acservicetech For those that are looking for the tools used in the videos: (Linked Below) Here is the Link for the Yellow Jacket Refrigerant Manifold Gauge Set used in the videos- amzn.to/2aenwTq Here is a link to Refrigerant hoses with valves used in the videos- amzn.to/2aBumVI Here is a link to the UEI DL389 Multimeter used in the videos- amzn.to/2xAdaJf Here is a link to the Imperial 535-C Kwik Charge Vaporizer for Charging Refrigerant- amzn.to/2wFHtBW Here is the link to the Fieldpiece ST4 Dual Temp Meter- amzn.to/2wc1ME3 Here is a link to the Digital Refrigerant Scale used in the videos- amzn.to/2b9oXYl Here is a link for RectorSeal Bubble Gas Leak Detector amzn.to/2ckWACn Other tool links can be found in the video description section. ACSERVICETECH is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon. Check out other videos on the HVACR topics of interest at- ruclips.net/channel/UCOZR-1IqsAer9wzlvFgb4mAplaylists?view_as=public If you want to support the ACSERVICETECH Channel and receive more HVAC content, check out www.Patreon.com/acservicetech
Won’t the TXV sometimes trick you into thinking you don’t have near as much refrigerant in the system? Thus why you let it sit and run for a bit after getting the low side above freezing?
Is it normal in America for the 410a tank to only have 1 valve and have to be charged upside down? Every 410 a tank I've ever seen in Canada has a liquid valve that has a tube which draws from the bottom of the tank.
I recently purchased the Imperial Kwik Charge and was wondering if I could attach it directly to the inverted tank? Would the line fill with liquid If I put it before the valve instead of after like your set up??
The videos are great. I'm trying to learn as I'm interested in HVAC. Maybe not the place to ask but lots of expertise here. We had a 4-Ton Bryant 15 SEER Heat Pump installed. The indoor Coil with a TXV is matched. This is where I think the installer made an error and I tried to call him on it. He delayed the install because he didn't have the correct Piston for the Outdoor unit. I told him I didn't think you could have both a TXV and a Piston flow regulator. He called me an F-in idiot and had his Partner deliver a Piston within hours. So Our Heat Pump has both. Was the Installer correct? What I've read on my own is they were wrong. He also must have been pissed at us because the Bill was $1000 more than the quote.
If you want to support the ACSERVICETECH Channel and receive more HVAC Content, Correspond, or Collaborate on your endeavors- check out www.Patreon.com/acservicetech All of the ACSERVICETECH Playlists- ruclips.net/channel/UCOZR-1IqsAer9wzlvFgb4mAplaylists?view_as=public Submit your email to the ACSERVICETECH email updates list at info@acservicetech.com
how is it your adding 410a to unit that had a leak,it didnt leak out pure 410a so how do you know what the actual mixture is in the system,i was always told when blends leak,evacuate,fix the leak,vacuum and recharge
Hey M Norm Great Question! In the case of R-410A, manufacturer trainings will say it is ok to top off systems as far as the blend is concerned because it is near azeotropic even though they want the refrigerant to come out of the bottle as a liquid to avoid fractionation. Obviously not over and over again. If you are working with other zeotropic refrigerants then more care must be taken when fixing leaks and adding to the charge. Here is some good reading material. Thanks for the question! www.achrnews.com/articles/82752-blends-101-an-introduction-to-refrigerants
hi, i have a residential r410a system with TXV. the superheat is high (45F) and the subcooling very low (3F). so i added some r410a BUT the subcooling doesn't change much at all. i wanted to bring the subcooling to around 10F. however the superheat does drop. but why is the subcooling not going up? thank you for your help.
It wouldn't matter if it was a fixed orifice or txv because the refrigerant that you are charging in would go straight to the compressor or on a heat pump, into the reversing valve and then into the accumulator. Sometimes I charge a single component as a liquid and sometimes as a vapor with the bottle right side up. You can use a Kwik Charge vaporizer or just charge15-20psi higher than the low side pressure already is 1 second at a time to try to keep the compressor safe, thanks
Please check out my other videos either in the All AC SERVICE TECH videos playlist or one of the specific playlists for a certain topic. So far there are 134 videos to date 9/1/2016 since we started 2/23/2016. They are all the same quality videos, full of info. I want to make sure that all of our 3500 subscribers to date take the opportunity to check out the previous videos as they are all important topics and procedures. I often answer Subscriber questions with the links to the video that will answer their questions. Actually I have made many videos due to questions that our Subscribers have! Thank you very much for you Comments! ruclips.net/user/acservicetechchannel
R-410A is a mixed two part near azeotropic refrigerant mixture. It has to come out of the bottle in liquid form to keep the mix correct. R-22 can be charged out of the bottle as liquid or vapor. Thanks for the Question!
How do you know, I am an amateur who only works on my families units. The other day I charged my daughters ac unit and it went perfect using subcooling method and I got all the numbers that I was hoping to see. My AC unit is another story, the pressure seems to operate much higher, there is only a 410a sticker on the condenser with no other information. I downloaded the info on this unit and it says nothing on how to service.
You would need to charge refrigerant into the low side while it is running. The only time that you could weigh in with the system off is if the system was vacuumed down to 500 microns and you break the vacuum with refrigerant, thanks
I'm having the opposite problem that you have at the end here, my system is rated 13 degree subcooling, they say plus or minus 3 degree is fine correct? so I reach the subcooling goal right away adding just a little bit but my pressure on the low side is way too low, about 50, but on the high side I get around 94 degree while my liquid line temp is around 78-80 roughly so I'm anywhere between 14-17 degree subcooling, I'm afraid to add more 410-a to raise the low side pressure or should I do that anyway? I saw you first brought the pressure up on the left side before you started to measure your subcooling but I also noticed you never reached your target subcooling before or even afte like I said mine reaches the goal quickly, now here's the interesting part, my delta T inside the house is not stable it fluctuates about 5-7 degrees , sometime I get 20 degree difference sometimes it drops to 14-15 and all that while the compressor is running. appreciate your take on this, BTW I'm no professional just a self taught DIYer. thank you.
Great questions, I would always recommend a tech to fix this. Don't bother adding anymore refrigerant. You either have low airflow, a blockage in the liquid line, or a bad txv. low airflow could mean a clogged filter, dust covering the bottom of the evap coil, collapsed ductwork, too small of ductwork, or improperly running blower motor or blower speed. Subcooling is just a measurement of the liquid capacity in the outdoor coil but the low side is showing you what is happening at the evap coil. Thanks Gus F
thanks for your quick reply, unit fairly new (6 years old Carrier)), I always change filters , Airflow is good and strong I doubt it's the case, maybe one of the other two, the problem with technicians, they eye ball everything, the last time I had one here, he didn't even hook up a temp gauge, he was just pumped freon, looking at the low side feeling the line with his hand, and he said he likes to see it over 100 there, he also said I might have a small leak and he pumped this leak fix thing in it, charged me $350.00 and left, hard to find an honest A/C tech out here in the Los Angeles area, they're all about just making the money and running. thanks for your input anyway, I learned a lot from your videos great channel.
Wow, I am sorry to hear that Gus F! That is ridiculous. You might want to look into the txv then unless maybe you have a piston. Here is the txv troubleshoooting video list- ruclips.net/p/PLxnHR5_D2ojy2EYzy0YIJkce9sFIQj4-j
Many of the videos are made to show what if scenarios and not actual service calls. This would be as if they found a leaky Schrader or txv fitting. Here is a video on weighing in charge if you had to recover first and then weigh the refrigerant back in--ruclips.net/video/ncgLDYrvN6w-/видео.html---Here-- is one on finding a leak that was a service call -----ruclips.net/video/2Be_sG-HQTQ/видео.html
The dish soaps now are much more corrosive then what they were 40 years ago. They eat away at the metal surfaces. Only use non corrosive leak detector. I have seen leaks and corrosion on newer installations due to dish soap and water, thanks
Our Inverter Mini Split Resources:
Mini Split Book on Our Website- www.acservicetech.com/mini-split-book
Mini Split Paperback on Amazon- amzn.to/3ytHJSs
Mini Split Paperback on TruTech Tools- www.trutechtools.com/BooksGuides?aff=8
Mini Split E-Book on Google- play.google.com/store/books/details?id=HN-iEAAAQBAJ
Mini Split E-Book on Apple- books.apple.com/us/book/id6445178399
Our Single Speed and Two Speed Air Conditioning Resources:
My Paperback and E-Book: www.acservicetech.com/the-book
My Paperback: www.amazon.com/shop/acservicetech
Read the book reviews on Amazon!
Check out our new Articles at www.acservicetech.com/articles
Support the Channel by purchasing tools through Tru Tech Tools!
Use this link www.trutechtools.com/?Aff=8
Save 8% at checkout using code "acservicetech"
Tool List- www.amazon.com/shop/acservicetech
Support- www.patreon.com/acservicetech
For those that are looking for the tools used in the videos: (Linked Below)
Here is the Link for the Yellow Jacket Refrigerant Manifold Gauge Set used in the videos- amzn.to/2aenwTq
Here is a link to Refrigerant hoses with valves used in the videos- amzn.to/2aBumVI
Here is a link to the UEI DL389 Multimeter used in the videos- amzn.to/2xAdaJf
Here is a link to the Imperial 535-C Kwik Charge Vaporizer for Charging Refrigerant- amzn.to/2wFHtBW
Here is the link to the Fieldpiece ST4 Dual Temp Meter- amzn.to/2wc1ME3
Here is a link to the Digital Refrigerant Scale used in the videos- amzn.to/2b9oXYl
Here is a link for RectorSeal Bubble Gas Leak Detector amzn.to/2ckWACn
Other tool links can be found in the video description section.
ACSERVICETECH is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.
Check out other videos on the HVACR topics of interest at- ruclips.net/channel/UCOZR-1IqsAer9wzlvFgb4mAplaylists?view_as=public
If you want to support the ACSERVICETECH Channel and receive more HVAC content, check out www.Patreon.com/acservicetech
Won’t the TXV sometimes trick you into thinking you don’t have near as much refrigerant in the system? Thus why you let it sit and run for a bit after getting the low side above freezing?
Is it normal in America for the 410a tank to only have 1 valve and have to be charged upside down? Every 410 a tank I've ever seen in Canada has a liquid valve that has a tube which draws from the bottom of the tank.
Yes those are disposable bottles.
Hi, I live in Antarctica, we're super cooled 24/7.
I recently purchased the Imperial Kwik Charge and was wondering if I could attach it directly to the inverted tank? Would the line fill with liquid If I put it before the valve instead of after like your set up??
one other thing please. can you add r410 as a vapor directly from tank into the low side? or you must add it as a liquid? thank you.
It must come out of the bottle as a liquid for the refrigerant to be the correct mix in the system and for what's left in the bottle, thanks!
Good job 👍
How can you calculate subcooling based on where the high side pressure is being taken?
The videos are great. I'm trying to learn as I'm interested in HVAC. Maybe not the place to ask but lots of expertise here. We had a 4-Ton Bryant 15 SEER Heat Pump installed. The indoor Coil with a TXV is matched. This is where I think the installer made an error and I tried to call him on it. He delayed the install because he didn't have the correct Piston for the Outdoor unit. I told him I didn't think you could have both a TXV and a Piston flow regulator. He called me an F-in idiot and had his Partner deliver a Piston within hours. So Our Heat Pump has both. Was the Installer correct? What I've read on my own is they were wrong. He also must have been pissed at us because the Bill was $1000 more than the quote.
If you want to support the ACSERVICETECH Channel and receive more HVAC Content, Correspond, or Collaborate on your endeavors- check out www.Patreon.com/acservicetech
All of the ACSERVICETECH Playlists- ruclips.net/channel/UCOZR-1IqsAer9wzlvFgb4mAplaylists?view_as=public
Submit your email to the ACSERVICETECH email updates list at info@acservicetech.com
hi Craig great video. can you use the kwik c charge adapter on the digital gauges along w the yellow jacket liquid charging adapter on the 410a tank ?
or just use one and are both them pretty much doing the same job
The kwik charge seems to do a better job and you can mount it right onto the tank and yes you can use digital gauges, thanks!
Excellent video. Thanks for the extreme detail.
Glad to help!
how is it your adding 410a to unit that had a leak,it didnt leak out pure 410a so how do you know what the actual mixture is in the system,i was always told when blends leak,evacuate,fix the leak,vacuum and recharge
Hey M Norm Great Question! In the case of R-410A, manufacturer trainings will say it is ok to top off systems as far as the blend is concerned because it is near azeotropic even though they want the refrigerant to come out of the bottle as a liquid to avoid fractionation. Obviously not over and over again. If you are working with other zeotropic refrigerants then more care must be taken when fixing leaks and adding to the charge. Here is some good reading material. Thanks for the question! www.achrnews.com/articles/82752-blends-101-an-introduction-to-refrigerants
thanks for that link,that explains a lot and thanks for the great videos too
hi, i have a residential r410a system with TXV. the superheat is high (45F) and the subcooling very low (3F). so i added some r410a BUT the subcooling doesn't change much at all. i wanted to bring the subcooling to around 10F. however the superheat does drop. but why is the subcooling not going up? thank you for your help.
When you add over a pound, it takes extra time for the refrigerant to cycle through and for subcooling to rise, thanks
When you purge the bottle before charging do you purge it with the bottle upside down
It doesn’t matter I don’t think. As long as you’re getting the air out. It doesn’t matter if u purge it with vapor or liquid
Do you need the vaporizer when recharging with R-22 ?
You don't need the vaporizer but it helps whenever you charge liquid into a running system, thanks!
@@acservicetechchannel Thank you
If the pkg unit was R22 with a piston, would you charge with the bottle upside-down?
It wouldn't matter if it was a fixed orifice or txv because the refrigerant that you are charging in would go straight to the compressor or on a heat pump, into the reversing valve and then into the accumulator. Sometimes I charge a single component as a liquid and sometimes as a vapor with the bottle right side up. You can use a Kwik Charge vaporizer or just charge15-20psi higher than the low side pressure already is 1 second at a time to try to keep the compressor safe, thanks
AC Service Tech LLC
I did not know no difference.
Would you use suprheat or subcooling?
very very nice explanation thank you so much for sharing!!!!!
Thanks, glad the video was enjoyed!
The unit is on while you are adding 410 on the low side right
Yes the unit is running. Thanks Trukin Forever!
Thank you!!!
Thank you Jimmy!
Please check out my other videos either in the All AC SERVICE TECH videos playlist or one of the specific playlists for a certain topic. So far there are 134 videos to date 9/1/2016 since we started 2/23/2016. They are all the same quality videos, full of info. I want to make sure that all of our 3500 subscribers to date take the opportunity to check out the previous videos as they are all important topics and procedures. I often answer Subscriber questions with the links to the video that will answer their questions. Actually I have made many videos due to questions that our Subscribers have! Thank you very much for you Comments! ruclips.net/user/acservicetechchannel
very great video.. do u charged the system off? or we can charge the system on?? thanks
Only while the system is running if the unit already has refrigerant inside, thanks
How do you charge 410A on a day below 60*?
Hey Phillip, I have a video on that, thanks- ruclips.net/video/OmQQcjmNLgw/видео.html
Why u charge the system liquid refrigerant from low side ?
R-410A is a mixed two part near azeotropic refrigerant mixture. It has to come out of the bottle in liquid form to keep the mix correct. R-22 can be charged out of the bottle as liquid or vapor. Thanks for the Question!
How do you know, I am an amateur who only works on my families units. The other day I charged my daughters ac unit and it went perfect using subcooling method and I got all the numbers that I was hoping to see. My AC unit is another story, the pressure seems to operate much higher, there is only a 410a sticker on the condenser with no other information. I downloaded the info on this unit and it says nothing on how to service.
How do air conditioners actually work
The refrigerant absorbs heat from the inside and rejects the heat outside. Please check out this video.ruclips.net/video/qqLwE7Kbyaw/видео.html
How can you charge into the low side without the compressor running? How is the refrigerant making it's way to the high side with the compressor off?
The compressor and fan are running. My mic cancels out background noise. You are not the first one that has asked. Thanks Eric!
so you do have to charge it with the system on and compressor on while charging via superheat?
You would need to charge refrigerant into the low side while it is running. The only time that you could weigh in with the system off is if the system was vacuumed down to 500 microns and you break the vacuum with refrigerant, thanks
I'm having the opposite problem that you have at the end here, my system is rated 13 degree subcooling, they say plus or minus 3 degree is fine correct? so I reach the subcooling goal right away adding just a little bit but my pressure on the low side is way too low, about 50, but on the high side I get around 94 degree while my liquid line temp is around 78-80 roughly so I'm anywhere between 14-17 degree subcooling, I'm afraid to add more 410-a to raise the low side pressure or should I do that anyway? I saw you first brought the pressure up on the left side before you started to measure your subcooling but I also noticed you never reached your target subcooling before or even afte like I said mine reaches the goal quickly, now here's the interesting part, my delta T inside the house is not stable it fluctuates about 5-7 degrees , sometime I get 20 degree difference sometimes it drops to 14-15 and all that while the compressor is running. appreciate your take on this, BTW I'm no professional just a self taught DIYer. thank you.
Great questions, I would always recommend a tech to fix this. Don't bother adding anymore refrigerant. You either have low airflow, a blockage in the liquid line, or a bad txv. low airflow could mean a clogged filter, dust covering the bottom of the evap coil, collapsed ductwork, too small of ductwork, or improperly running blower motor or blower speed. Subcooling is just a measurement of the liquid capacity in the outdoor coil but the low side is showing you what is happening at the evap coil. Thanks Gus F
thanks for your quick reply, unit fairly new (6 years old Carrier)), I always change filters , Airflow is good and strong I doubt it's the case, maybe one of the other two, the problem with technicians, they eye ball everything, the last time I had one here, he didn't even hook up a temp gauge, he was just pumped freon, looking at the low side feeling the line with his hand, and he said he likes to see it over 100 there, he also said I might have a small leak and he pumped this leak fix thing in it, charged me $350.00 and left, hard to find an honest A/C tech out here in the Los Angeles area, they're all about just making the money and running. thanks for your input anyway, I learned a lot from your videos great channel.
Wow, I am sorry to hear that Gus F! That is ridiculous. You might want to look into the txv then unless maybe you have a piston. Here is the txv troubleshoooting video list- ruclips.net/p/PLxnHR5_D2ojy2EYzy0YIJkce9sFIQj4-j
thaks I will check out your play list , yes I do have a TXV not a piston.
were you able to tell if there was a leak somewhere? thanks.
Many of the videos are made to show what if scenarios and not actual service calls. This would be as if they found a leaky Schrader or txv fitting. Here is a video on weighing in charge if you had to recover first and then weigh the refrigerant back in--ruclips.net/video/ncgLDYrvN6w-/видео.html---Here-- is one on finding a leak that was a service call -----ruclips.net/video/2Be_sG-HQTQ/видео.html
Whats wrong with dish soap?
The dish soaps now are much more corrosive then what they were 40 years ago. They eat away at the metal surfaces. Only use non corrosive leak detector. I have seen leaks and corrosion on newer installations due to dish soap and water, thanks
acservicetech good to know. Thanks for the info!
Seems your not sure?this is a basic system why would u need to return