We walk through some of the basics and most common symbols associated with reading an air conditioner wiring schematic or diagram.
Read all the tech tips, take the quizzes
and find our handy calculators at https://www.hvacrschool.com/
Carrier: https://www.carrier.com/carrier/en/us/
Mitsubishi Cooling & Heating: https://www.mitsubishicomfort.com/
Refrigeration Technologies: https://www.refrigtech.com/
Read all the tech tips, take the quizzes
and find our handy calculators at https://www.hvacrschool.com/
Carrier: https://www.carrier.com/carrier/en/us/
Mitsubishi Cooling & Heating: https://www.mitsubishicomfort.com/
Refrigeration Technologies: https://www.refrigtech.com/
Thank You
Some ass4673 put korean stupid story in the subtitles. so if you choose another language you get totally crap translation instead of the real content. Could somebody fix it?
was going a bit quick but great video.
Hi HVAC School,
Can you please do a three-phase wiring diagram lecture for industrial refrigeration?
A lot of people work in non-residential settings too!
Thank you!
Thank you for sharing truly appreciate it
anything on circuit boards , other than if you have power to it and out of it its good ,,,,i think all teachers seem to use this as an explanation to those boards ,,,,thank you
HVAC School
I was wanting to better understand why Carrier has a Start Thermistor in parallel with the start capacitor and start relay. Thanks in advance!
good job…. 40 years in started in1981
Thanks for the class
"Path of least resistance"… ugh current will flow through ALL available paths back to the source. Even through motors though it may be negligible due to resistance. If current flows with L1 open that must mean there is a path to L2 for the CCH to still be operating. If L1 closes, the original path remains and a new path is also available.
When L1 is connected via the 24v signal, the crankcase heater must still be going. There is still a potential difference between L1 and L2 with the contactor closed and the CCH on. The crankcase heater is a resistor so very little current will flow through and the heat of it or the compressor heat from actually running will open the CHS pretty quickly thereby shutting it off making it look like it turns off around the same time L1 closes. It'll operate whether the contactor is open or shut unless there is some logic control sending a signal back to the thermostat or another switch in series. The logic switch looks like it deals with high and low pressure controls only but there must be a way to shut off the CCH when the AC is completely off. The L1 open or close is irrelevant as there is still a potential difference from L1 to L2 such that it will flow.
your moving around too fast Service area Orleans??
Consider using the yellow circuit to point with, your moving the mouse annoying.
love you're videos been a fan for years but am having some low voltage issues on a carrier package unit trying to follow the wiring on the schematics but its crazy do u have any recommendations on how to get better at following and learning schematics
Did anyone else noticed the LPS and the HPS are different symbols on the Connection Diagram compared to Ladder Diagram. I believe the symbols on the Connection Diagram are correct. They are both normally closed switches. The LPS opens when the pressure drops while the HPS opens when the pressure increases. But, on the Ladder Diagram, I believe they are switched. Or, am I incorrect?
New subscriber. I watch your videos to help me understand HVAC and prepare me to enter the HVAC trade with a friend and enroll in APEX electrician school in NYC in April 2021.
Thank you very much I learned a lot.
Very good explanation thank you
You experience in the HVAC field but your explanation is too fast. I need a speed radar gun on how fast your talking. But I have to restart the video to listen again and look on your explanation.
The comment about romex isn't correct all of the romex we use in Ohio is rated at 194 degrees
Hey Brian great video man really helping me out get better at this 👍 👏
I just LOVE “May be there” nomenclature! Are you in Barrhaven ?
My goal is to identify the functions of the devices in a given circuit diagram?
Or spoken more general.
How can I lean this general skill?
When do I see a random circuit diagram in all kinds of electronic fields that I can recognize the devices and their functions?
What is the best strategy to acquire this skill?
Do you know good information recourses specially designated to acquire this skill?
I do not want to handcraft things on my own and I do not want to study at a university to acquire a bachelor's degree in electrotechnology.
I just want to be able to read more or less the circuit diagram.
Thank you in advance
سلام سپاس وهزاران تشکر از همه زحماتتون.👍…وهزاران هزار 👍…….جناب مهنس محترم امکان ترجمه زیر نویس بفارسی هست….ممنونم….
Very good, as always.
On my 1983 furnace wiring diagram, why is there one set of the air combustion (inducer) relay's normally open contacts in parallel with my fan control/limit– the old style fan control type, that is? Why would the diagram say that call for heat turns on the blower right away and not let the fan switch do it in it's on time when it heats up? And it doesn't list like it's an optional wiring in the notes anywhere? But I'll bet if I go look on the furnace that there is no combustion relay across the fan switch so why is it in the diagram? It's a Heil diagram in the manual so why would heil print out a faulty diagram? I'll have to check to see if it's on the inside front cover panel also which I think it is so why would they do that? Service area Barrhaven??
Thanks for your nice video.
I hope you continue this as a series esp going to rooftop units as well.that will be very helpful.
What is your trutech tools discount code? Service area Kanata??
Its funny how for me as an electrical student, I learn more from HVAC guys than electricians LOL
Thank you for this explanation, I don't know why some people make dislike Service area Nepean??
Great great teaching these R my problems understanding a schematics.
You explain in a way it works for someone with no electrical schooling I just learned as I worked so great great ways of teaching, & for the negative comments if you all know that much then why even watch.
Thank you I'll continued to watch your videos, with some questions.
Thank you my friend for taking the time and effort in making these videos. It’s much appreciated.
You have explained the schematics and symbols very well but you have not explained how the power flows during start of compressor and fan and when it switches over to run bypassing the start capacitors.
Very Very Useful Sir
Thank you for the information is helpful
Great job on this. I am using this for remote learning with my HVAC high school students during this trying time. Thanks for sharing!
new susbcriber bro here. I did not study about this even though I'm an aircondioning and refrigeration technician just a small unit not like hvac which its units are huge compared to window type and split type but I'm still learning do you agree? Are you in Orleans ?
If you see mistakes on these schematics, do you ever contact the manufacturer and inform them of the mistake?
currently in my 2nd year of an apprentice program in a local college near me. This whole year is electrical and it was a bit confusing for me to read diagrams like this because my teacher never really goes too in depth with things and im more of a hands on learner , but this has made it sooooo much simpler. Glad my year one teacher that im still in touch with recommended your videos! 🙂 Been outside on my own AC unit just getting a better visual for them and its pretty simple now. Thanks alot!
Need subtitles ….
Good video braking down schematic symbols, thank you
Thankyou for the greatest explanation sir l really appreciated
Paulino Matos
hi i am Paulino matos and i live in new jersey. I've been working around this industry for about 10 years but i want to know how to get a STC Certificate and a 608 EPA Universal license. And also how to get a certificate for plumper. do you guys have like a course i can take so you guys can help me get a certificate and tell me how much it cost. please contact me
Autocad!!! Are you in Kanata ?
Thank Bryan another great video sr.
Not too many people have a way of explaining electrical schematics , You Sir have a talent for this IMO. Thank You!! Are you in Ottawa ?