thank you for all of your topic it helps me a lot for I am and HVAC technician here in middle east hoping your topic will continue as what I said thank you very much
I heard a lot if the inexpensive mini-split units also use a single metering device in the outdoor unit and lack a liquid line filter drier? That plus R410a's oil situation doesn't bode well for longevity it feels.
Yes on package hps generally it will only be liquid passing through the drier in cooling mode. In heating mode it will be a sat/ flash gas passing through. Always noticed that but never thought too much into it. It's really the only way unless they installed one on each side of the metering device
How does this apply to NATE Questions. From the condenser to the liquid line, there should be a liquid seal. To prevent flash gas and have a proper subcooling at the liquid line.
I have a unit that trips high pressure in heat pump mode like 650 psi but runs perfect in cool mode, could this be the bypass not working on the condenser side, also suction line is 180 degrees so it seems like reversing valve is working
100% absolutely not the reversing valve! The one of the most misdiagnosed comments. I have gone to countless call where the previous company or tech said it was a bad valve and it was not. I have replaced very few valves over the years. #1 you have an airflow problem. The indoor needs more airflow in heating mode than AC mode. Few people know how to actually check airflow. #2 overcharged. An overcharged system will work in AC but will be a problem in heating. There are some other other things to look for but those are the main 2
Thank you I see all the normal txv but not the one for heat pumps. Very helpful and explanation was awesome
THANK YOU & JD for the pictures and graphics. It helps out immensely.
Awesome video! Thank you so much for the detailed explanation of how these work.
thank you for all of your topic it helps me a lot for I am and HVAC technician here in middle east hoping your topic will continue as what I said thank you very much
Thank you for posting such detailed information on the topics you cover. 🙂
Great video great instructor
Another great video Ty. Thanks for sharing
Awesome. Great information!
I heard a lot if the inexpensive mini-split units also use a single metering device in the outdoor unit and lack a liquid line filter drier?
That plus R410a's oil situation doesn't bode well for longevity it feels.
3:38 Ty you´re awesome 🤣 Thank you 🙏
Yes on package hps generally it will only be liquid passing through the drier in cooling mode. In heating mode it will be a sat/ flash gas passing through. Always noticed that but never thought too much into it. It's really the only way unless they installed one on each side of the metering device
Great job Ty! What tiny hands you have 😅
Thanks 😅 it's just a really big valve 😂
How does this apply to NATE Questions.
From the condenser to the liquid line, there should be a liquid seal.
To prevent flash gas and have a proper subcooling at the liquid line.
Thank you so much
How would you know whether or not a particular TXV has an internal bypass?
I have a unit that trips high pressure in heat pump mode like 650 psi but runs perfect in cool mode, could this be the bypass not working on the condenser side, also suction line is 180 degrees so it seems like reversing valve is working
100% absolutely not the reversing valve!
The one of the most misdiagnosed comments. I have gone to countless call where the previous company or tech said it was a bad valve and it was not.
I have replaced very few valves over the years.
#1 you have an airflow problem. The indoor needs more airflow in heating mode than AC mode. Few people know how to actually check airflow.
#2 overcharged. An overcharged system will work in AC but will be a problem in heating.
There are some other other things to look for but those are the main 2
How about the package heat pumps with only one TXV? Can anyone guide me on how to troubleshoot them?
👍👍
👍
Do u do live chat?
Sometimes
Thank you so much