You got off to a slow start, but when you got rolling it was terrific. It was a clear explanation of the circuits involved and helps a lot in troubleshooting a thermostat problem. Nice work and thank you.

I owe you a beer or several. If you are ever in Minneapolis let me know. Your explanation was what i needed to fix the wiring mess in my furnace. THANK YOU. Now my AC works and my pregnant wife will be less uncomfortable.

this is an excellent video. I usually end up installing a lot of lutron or crestron thermostats, and this really explains what's happening plus troubleshooting.

Love your videos! As an electrical engineer grad but more into business now, I don't use to much electrical engineer. You have great videos to brush up on engineering aspects. Keep it up love your video education on electrical engineer!

Amazing! I just graduates from HVAC trade and this video is equivalent to a week of lecture in my class. Thanks a lot! You are my hero!

@songhiep91

8 жыл бұрын

Graduated*

@dontbelikejake

6 жыл бұрын

so if i have an apprenticeship, i should just watch these

Your have cleared up years of confusion for me with this Thank you for taking the time to make it.

@GuyBrown

4 жыл бұрын

You are very welcome. Please feel free to request video content.

You are the HVAC Legend from today !

Lots of video's Ive watched show how to wire, but not the theory of operation. Yours was well done. thank you!

Sadly I was falling asleep but good explanation in in an AC repair class RN and IM still learning even my teacher said this video needs more enthusiasm

Very helpful information and explanation. Thank very much.

I installed my first thermostat watching your KZread video, thanks a million!!

@GuyBrown

4 жыл бұрын

You are very welcome!

@ChiDraconis

4 жыл бұрын

@@GuyBrown I am about to open the cover on a unit; I worked up to setting the condenser myself without supervision but did not become proficient - zero time actually - at any of the inside of the unit; I installed 4-wire mechanical T-Stat per *Terry's* directions; He has many decades doing this and now works at LP - which is a fast-paced major shop in the county so he knows his stuff; We robbed the T-Stat from a building to get tenant's area heated; I hooked up 3 of the wires by unmistakable color-code and there was only one wire left so I attached it then failed to pull cardboard cover for shipping which I did on a call-back then tried the fan and the blower came on but I get hot customer ( he is a contractor ~ worked at BMW shop and has his own mechanical tools ) telling me the unit is not heating; I have emailed the supplier with PN's to get a wiring diagram but looks to be a very common style of the era prior to "heat pumps" I have ¼-million hours with only one scar so I can open the unit in relative safety - it is dangling wires that I did not install so I have to be x-tra careful not to break anything that is working and can really use your oversight;

It is a great explanation how it is wired...excellent job ... A+

This video is very fanatics and helpful, thanks.

My opinion is, a good teacher.

@GuyBrown

7 жыл бұрын

+Gotchaplumber Gotchahvac thank you!

i'm way beyond this but still enjoyed watching. good video!

Thank you for a straight forward simply explained video. It really helped me. Thanks

This is so interesting. Electrical troubleshooting of any kind (including auto) gets my attention every time.

@GuyBrown

6 жыл бұрын

It's a great skillset to have.

Your Talk is studious , I Took notes , Thanx

Thank you so much for your ,time is a great explanation very easy to understand, thank you master I started dealing with this .thank you.

@GuyBrown

7 жыл бұрын

+Rigo Lainez thank you!

Thank you for the video. A while ago I changed my wires and when the summer hit my condenser unit did not go on. Thanks to this video I was able to pinpoint the 2 wires that needed to be connected and now it is working.

Thank you so much because of your video and explanation I was able to fix my problem. 😊

@GuyBrown

6 жыл бұрын

Thank you. Please feel free to suggest a video you would like me to make. Thanks for watching!!!

Nice of you to do these videos.

Thanks so much for this. I was wondering where the extra wires to the Y and C terminals went to, and now I know! Now I'm wondering what the ballast screwed on top of my furnace that's hooked up to the C and R terminals is for. Plugs into 4 prongs where the output air ducts are connected.

Thanks Guy , great explanation.

thank you so much doing good job keep going .... goad blesss n more power....

Great video made simple and easy to follow.

Very helpful

THANKS MAN YOUR THE BEST...

Helped me out a lot, Thanks!

Starting school for this soon. So safe to say that if the furnace doesn't run. Check W to C and if you have 24 vilts. Then that means the stats good. No 24 Volts from W to C and stats bad? as long as there's 24 v from R to C.

Great video, thanks, on your diagram, when the unit is off, before setting the temp on the thermostat, which letter would be NO and NC contacts? Thanks

thanks for the explanation very useful.

Thank you guys!

This is what ive been waiting for! Very informative

Thanks for your explanation guy it makes a lot of sense. I will subscribe to your Chanel all your videos are really helpful

Thank you for the nice video!

Thanks for this great explanation!

Thanks man. Really helped!

gotcha . great videos man I appreciate them

Thanks! This is what I have been looking for.

@GuyBrown

6 жыл бұрын

Thank you. Please feel free to suggest a video you would like me to make. Thanks for watching!!!

I like this series - great information Thank you

@GuyBrown

9 жыл бұрын

thanks!

The green wire is for the air handler unit fan motor relay only, the yellow wire is for the outside condenser unit. The yellow wire energizes the compressor contactor, the fan motor is conected in the same contact. If the compressor works,but the fan motor fails, the capacitor may be damaged,defective,or the fan motor may have an open winding, most common problem with an old fan motor is the capacitor.

thank you for this video.. Very Helpful..

Excellent video!. I'm in the middle of doing reno. I relocated the furnace. I don't have new ductwork yet. I still have some of the old stuff.Can I run the furnace without ductwork? Maybe till spring.

gracias por el video amigo viva sudamerica

Great help thanks👌🏽

fantastic sir thank you very much

Hello I Have been doing home wiring for years (110-220) in them but never certified and i am learning all there is about the symbols and all. I am going for an electricians apprenticeship with our local union hall . I would love to watch and learn all you have to teach. I thank you for these videos and more if they are out there .

@GuyBrown

7 жыл бұрын

+Thomas Kokensparger that's great. Thanks for watching.

trying to install a Wi-Fi honeywell thermostat but I only have 4 wires so I was going to use g wire as the c common but I got down to my furnace and the y wire is in the c wire place. so why would this be set up like this? can this be because we also have an electric plenum heater wired into the system as well?

Very good info .

If I don't have an air conditioner can I leave the Y without a wire?

Great job buddy and thanks for the free lessons

Great video

Thanks for your video, help me a lot how to connect my new smart thermostat, I have little issues because my fan never stop and I have this fan in automatic, when I turn the heater off works but the fan is always working, what you think I did wrong.

Awesome 👍 thanks

Thank you.

Very helpful. thank you.

@GuyBrown

5 жыл бұрын

Thank you. Please send any video suggestions you may have. Thanks for watching.

I was trying to install a new 5 wires thermostat replacing an old 4 wires. I used extra wire as c wire but the furnace terminal board side already has a wires attached to it(C and Y), which runs to out side compressor unit. when I attached the new run c wire to this c terminal it is blowing out my 3 amp fuse. where should I connect the c wire of the new thermostat then?

WELL DONE

way understandable then school thanks

I'm installing a Honeywell 7 Day Programmable Thermostat. My old thermostat has a violet wire, what do I do with it?

i hooked up a Honeywell thermostat TH421 ,when i put it to HOLD It goes to my set temp but then keeps running and running it wont shut off unless i turn it to OFF. What would make this happen?

Please help! How do I run brand new power to an ac unit?? I'm remodeling a house and the guys that demoed the place tore out the previous wires. I have no idea how to run power from a box on the ouside to the inside. All the breakers are already full so I don't know what to do.

I have an electronic ignition fireplace that ignites a pilot. It has a control module . it has multiple connections coming from remote control receiver, battery relay, and a battery pack. The control module has two connections labeled pilot connectors. Labeled I and S on the wiring diagram. I want to install a thermostat like on a heating unit. It seems I need to connect the thermostat to the control module at I and S terminals to send a signal to light the pilot. Am I in the ballpark on this?

thank you sir. I HAD A PROBLEM WITH MY "smart thermostat and I had to figure out what all the connections meant...... et voila problem fixed thank to you. I needed to figure out the C=common wire did and how to work around it to giv eto the thermostat. what is wrong is that the Smart thermostat does not need power via the C wire but instead a negative.... once you find that out that hooking it up is easy. thank you again Sir. also I know now how the trigger for the AC works. great stuff

@GuyBrown

8 жыл бұрын

+Mau Gri thank you!

@meredithroberts8992

6 жыл бұрын

Mau Gri u7

I am working on a very old houe, the 5th wire is brown, can I assume it works as the green wire?

Very nice. Now I know why I have to 24VAC on red within my Nest thermostat. With 5" of snow on my heat pump and I am in a wheelchair. This could be fun. Where is the squirrel cage in line of the electrical side?

I saw your video, it was really helpful and I was thinking that maybe with your knowledge you could help me with my problem. Do you have any idea if I could connect two thermostats on a single stage heating and cooling? My idea is to install one tsat downstairs and one upstairs to have the chance to select (via software or at least a manual switch) which thermostat to be in charge of the HVAC. For your information I have just one manual damper (which closes or open the up floor duct), so the idea is not to do a zoning but to have control of the temperature on the floor I am regardless what the temperature is on the other floor. Just as an example to be clear: If ambient temperature is 18°C and I'm using downstairs tstat (with set point 20°C), upstairs will be 25°C but the system should continue working. Only the downstair tstat should lead. By the way, I'm from Argentina and I have already bought 2 Honeywell WiFi - RTH6580WF on a trip to USA (here are really really expensive!) Please let me know if I'm not clear enough. Thanks in advance. Regards.

This is a great explanation, thanks for this. Two questions for you -- 1). I have two wires in my thermostat (W and Rh) and a jumper between Rh and Rc. Why is the jumper there, what purpose does it serve? (Heat only steam boiler) And, 2). If I wanted to use a Nest thermostat, would I simply need to upgrade to a 3-wire and connect C from thermostat to C on the boiler's electrical box?

Great video Guy.. I do have a question that I cant seem to figure out why my new Goodman MVC96 furnace blower fan shuts off as soon as I switch the thermostat to cool mode but the condenser does start up fine. Because of no blower fan circulation the TXV and service port start freezing up immediately so I cant even get to setting sub cooling . I have the 2 condenser wires hooked to Y & C on the furnace control board but when set the thermostat to cool it shut off the blower fan. Blower fan also wont run in the ON or Auto position when set to cool but does work in heat and fan only mode.??? Any suggestions would be great. thanks

@GuyBrown

5 жыл бұрын

Unwire the tstat and jump out the terminals at the furnace and check for proper operation. Sounds like a stat issue.

Thanks

thanks a lot

God bless you dude.

@GuyBrown

5 жыл бұрын

Let me know if you would like to see more vids on anything

Thxs. Good video.

@GuyBrown

4 жыл бұрын

Thank you!

Informative!

How would a thermostat without a Common terminal receive electricity in order to send signals out back to the circuit board? Simply battery power? Or are there old analog ones that use some type of different metals that generate a small amount of voltage?

@MaxAirGo

6 жыл бұрын

Yes, if it has batteries, it uses the energy from battery to energize relay(s) inside thermostat to connect R 24vAC to desired terminal (function). The old thermostats used contact switches filled with mercury that are conductive.

Great series!!! But what about the CONDENSER FAN? Did I miss something?

Thanks!!!!!!!!

Nice video

Great videos been learning electric and hvac systems due to myy furnace failing. Was wondering how u check volts on furnace t-stat without a common wire. I know red should be 24v and W if heat is on, im having trouble getting my furnace to turn on at all. Need to know how to check double pole breakers inside furnace to make sure im getting proper V there and on t-stat. Thank u in advance and wonderful job on the tutorials.

@GuyBrown

6 жыл бұрын

+Dustin Hacker thanks man! Let me know want you want me to make a video on.

I get 24v from red and green ,no reading on red and blue, what seems to be the problem? Blue is neutral.

What if you do not have 24 volts at R and C on the block but you do on the transformer. Also have an error with five blinking lights. This occurred after a freeze up.

@667cmays

5 жыл бұрын

?

The letters are constant when it comes to all HVAC?

So the yellow wire goes out to the contractor on the outside unit?

Hi on this video can u pls tell me witch colour wire go with each letter . Ex w white y yellow is R ( power ) read and is C ( common ) blue? . Can u pls tell me if this color code will be in Uk to for daikin and mitssubishi ? Thank u

Great video to understand the low voltage side. I an working on a heat pump that is not pulling in the contactor on the outdoor condenser unit when calling for cooling. I have a few things I'm scratching my head about. 1. I am getting 30V from the (R) Red and C (Common) it is a 24 Volt system, does this mean my transformer needs replaced? 2. When I check the W (White) to C (Common) when asking for cooling I am only getting 15V and it is also showing 15V when not asking for cooling (turn thermostat above room temperature). Is there something I am missing? Thanks for all your help so far.

@kevinroberts781

5 жыл бұрын

the 24v transformer will produce a voltage between 24v-30v. That is normal and most produce around 28v AC. If you measure the voltage across 2 points and only get 15v that tells me you are only seeing voltage from 1 side of the transformer (either R or C. Most likely R side). You need the relay in the thermostat to make the connection on G,Y,W ect to C in order to get a complete 24V connection. When that takes place, the 24 volt relays will switch on and supply 110/220 vac to the outside unit/inside fan/heat strip depending. I am not a HVAC tech. I just love everything electric and worked on it from 9 years old until age 39. Very fun stuff!

I bought a new thermostat and went to install it, but there was no "C" terminal but I have a common (blue) wire. I dont know where to put my common wire, and I can't get the thermostat to run. I am trying to run heat and air if that helps. If anyone knows anything please help me.

can i put C in mainbroad to C in thermaltake broad and put it to C in tranformer (neutral) then hook it to chassic (ground)

Thanks for this video. Very informative & well explained breakdown. Keep 'em coming👍🏽

Thank you for your video. - The wire coming out a/c compressor doesn't matter which one i connect to Y or C? - There is no wire hook up to my Thermostat do i still connect wire from comp to C ?

@officerkrupke4966

5 жыл бұрын

What is the deductible for your homeowners insurance. It might be cheaper to hire an hvac tech .

Hello, I want to install a ecobee3 in my home. at the thermostat I have WYGR (the Y is a Blue wire) at the furnace I have WGR hooked up , nothing is on Y but there is a gray wire on C, Gray from C goes to the AC comes back as red then goes to the thermostat as a blue wire to Y on the thermostat.would you be able to explain what they are doing. any help would be greatly appreciated. Thank you

@GuyBrown

7 жыл бұрын

+Chris Mckie your answer is coming in a video. Keep an eye out for it. This week.

@GuyBrown

7 жыл бұрын

Chris Mckie I uploaded a video for you.

@ripple781

7 жыл бұрын

mine is wired similar, Y is blue, R is red G is green W is white. There is also a C is yellow. Wire pair from AC is attached to furnace C and Y. My 24volt transformer is only attached on the circuit board and the C is loose in the cabinet. I have 24volts at the 5 terminals across the loose transformer wire. I have a Honeywell rth9580. I have 5 wires only for the thermostat. I want full control of the fan to automate it. Can you help explain how to wire the transformer and thermostat. I have some good photos as well. Thank you

nice sir

Great explanation guy ,I have a question. What happens if I set the t stay in cool mode and fan is at the on position.

@GuyBrown

6 жыл бұрын

+Samuel Aguilar fan will run and the ac will run when the stat calls for cooling.

Thanks man looking forward to seeing more..GOD bless you

@GuyBrown

9 жыл бұрын

+daren sanders Thanks for watching!

Hi, in a Utica PEG150BIDE gas boiler, where are the wires of the Safgard VXT-24 automatic feeder connected?

@GuyBrown

6 жыл бұрын

gersondavidUniverse not sure without looking at it but auto feeds usually operate off of the LWCO.

@realuniversechannel1

6 жыл бұрын

Thank you

Hi, and how to connect two thermostats in parallel?

Thanks for the video, I just took off my super old Honeywell round manual heat thermostat to install a programable digital one and I se i have white/ black/ yellow/ green wiring. No white. Black and red were connected, yellow/green were not. Is black the same as white wire? Thanks!

@GuyBrown

7 жыл бұрын

+Bibi Bendikova yes that should be fine. May want to check the wires connected at the furnace to make sure.

@bibibendikova6492

7 жыл бұрын

Placed the black into W and the new thermostat works. You helped me feel empowered today, thanks Guy!

@GuyBrown

7 жыл бұрын

Bibi Bendikova you are very welcome. hope you subscribe maybe a future video will help again. Merry Christmas.

thank you very much sir , u oblige us by posting this kind of lovely videos ,,thx again

Would it still work if the common wire to the transformer got disconnected?

@mwatkins2464

6 жыл бұрын

Chad Tinsley no it won’t work

very nice explanations,I'm learning too,I have a question I wanted to install a timer for my chiller or airhandler unit,in my working place it's 230 volt but I'm not sure if what types,we have a old 30 yrsold unit carrier

@officerkrupke4966

5 жыл бұрын

Buy a timer at the big box store that is used for controlling a hot water heater. Just make sure the amp rating on the timer is the same or exceeds the breaker amp rating that feeds power to the air handler.