Top 12 Problems/Mistakes when Installing or Replacing Thermostats! HVAC Tips!
ฝัง
- เผยแพร่เมื่อ 6 ต.ค. 2017
- In this HVAC Training Video, I go over the Top 12 Problems or Mistakes that can Cccur When Installing and Replacing Thermostats used for Furnaces and Air Conditioners. I go over Thermostat Wiring, Troubleshooting, and Tips on how to solve the problem. Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety.
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acservicetech add 1 more to the blue wire to b terminal-blown fuse. Is it ok to use a 5a fuse instead of a 3a? No big deal to go and get a 3a fuse, just wondering. Thanks big time. I was wondering if i was gonna have heat tonight.
Always use the same as the system calls for, thanks!
Thank you sir fixed my heat
This video helped me immensely. I moved my thermostat from one room to another, and was absolutely certain I had rewired it correctly, but the system wasn't still working. I couldn't for the life me figure out why. Turned out to be problem #6 in your video - I blew the furnace fuse by accident. I never would have figured that out without your video, and/or a service call from local HVAC repairman. You saved my money and time. Thank you.
I would've never even known to check the blown fuse, and yours is the only video I found which mentions it. Fuse replaced and thermostat actually wired correctly according to the manual (which it helps to read), heat now works. Thank you!
I had reinstalled my original thermostat because I was afraid that the new one wasn't working properly, but this video gave me the confidence to open up the air handler (after turning off the separate breakers at the air handler!) take pictures of the terminals and wiring diagrams and try again. It turned out that the changeover timeout was just longer than I expected (missed the "waiting for equipment" message before) and the new thermostat has been working great ever since.
You people are amazing!!!! I been watching so many videos and none of those give me the right information until find yours.
there is no way to go wrong with such explanation, clear and to the point knowing each and every mistakes that could happened
I do not have the right words to express my gratitude. Thank you very much!!!!
Thank you very much Ruben!
this for sure saved me. I crossed the red and grey by accident I had no idea why my furnace wouldn't kick on and then this video mentioned a fuse. $6 later and my air is back on. Thank you!
Problem #8 is often the most overlooked and most frustrating problem to cure. Thanks so much for posting pointing this one out!!
Thanks David!
@@acservicetechchannel Consider using a small, plumbing vice grip to hold the wires as you switch the backplates.
I think I may have finally figured out the issue with our thermostat after years of dealing with intermittent issues with the heater powering on. I'm going to try tightening the cables right now. Thank you!
Just one quick tip to possibly add: Make sure when you tighten down on the terminal screw for each wire that your making contact with the copper wire and not the insulation.
Thanks so much for this video! I had blown the 3 amp fuse and was going crazy trying to figure out the issue. Saved us from a cold night tonight.
Through watching this video and looking at my thermostat I installed this spring I corrected my Jumper issue. Thanks for the help. The heater is on and working. My wife is happy im the man of the house and you just saved me $ from having to call a hvac guy. Thank you.
7 years after your video was published and people like me are just now learning about the damn FUSE!!! Replaced my blown fuse and everything started working as normal. Thank you for the video!
You're a life saver. I knew the wiring was correct but didn't consider the fuse. Thank you so much!!
AC Service Tech, thank you very much!!! Your guidance and teaching has been a tremendous help.
Glad to help David!
Hello, I’m so grateful that you have taken the time and knowledge of explaining which wires “should” go where and why. Your direction is very helpful. I just moved into a condo and did need to call a technician at $78. to determine my problem The thermostat was that not working was probably an original as my home is now 20yrs old. He was such a kind and honest man telling me he’d have to charge $485. to charge the thermostat. I don’t have that kind of money and my homeowners warranty I always carry was a day away from kicking in, so he was so great at pulling the cover off of my thermo (something I thought would break it straight away, because I honestly had no idea that’s how to even work or change it. ** back to my problem **... I followed directions, put the stickers on where the wires had been. Everything seemed like clockwork and because we’re going down to freezing temps at nights so I was thrilled to get my heat working. I don’t want the programable option on this Honeywell model I chose so have been using the override method. When I’m hot, I know that and if I’m cold I’ll adjust it, so no need to have a set schedule to keep me comfortable.
Ok...finally my problem 🙄,i discovered today...because it actually got warm today, that I wanted to cool my home just a few degrees and that’s what I’ve been trying to figure out the last 6 hours. What did I not do correctly. I have a hydroponic system so I followed the setup listed in the thermostat direction. When I switched it over to cool, I can’t get it to kick on. Your explanation of the wires might be helpful only obviously I’d like some backup now because my A/C isn’t kicking in. I’m 60 and often can repair easy things and today with Utube it’s almost foolproof, and that word of foolproof hasn’t been on my side with this thermo. And now with your tutorial I might have a chance, However, with my current problem and question obviously “I’m” not foolproof. I’ll try to check and rewire where my mistake may have happened and hopefully I haven’t ruined anything. Wish me luck. Sending me a little advice would be extremely wonderful if you’re reading this blog, and my problem is probably one you’ve encountered. Thank you again for your tutorial on thermostat education.
There may be a dip switch on the tstat on the back side or you may have put the wire that was in y into the new tstat at y1 instead of y/y2, thanks
Hi there! Thank you for that. You may not believe what happened but I’ll tell you anyway. I was ready to punch myself when I’m holding this top part of the thermo in my hand and was just staring at with a whole bunch of anxiety when I noticed that the very end pin is bent and that’s the port where the mm
THANK YOU!!
I needed help and you Greatly helped me!
Thank you!
Good tips. Perfect content, not too long, not too short. Great video. Thank you.
Thanks Olay B!
One of the better videos out there. Only thing I might add is that on older systems like mine blue goes to o. So make sure you note it before removing it.
Just replaced my thermostat over the winter furnace was working fine it stated to get hot and my AC compressor would spin but furnace would not blow. Went over all my wiring issues they were right after watching your video it was set to electric and heat pump I never saw that option during install. Thanks so much for your video its back to working great keep up the good work ...
Awesome, thanks
Man, great call on the fuses. Never would have known 5 amp fuses were inside the furnace? I have dual, and they both blew. Actually, all of your tips are great. Wish I would have watched before I started, but I'm now up & running. Thank you!!
Thanks erpgolfer!
Thank you. This is the best explanation I’ve watched about thermostat wiring
Wow, thanks!
Hello Great video makes it easy to understand what is happening with a t-stat and the HVAC equipment
Thanks William!
one of the top thermostat videos on youtube, thanks for your information
Thanks protego!
Outstanding info - very well described - thank you!
Thanks Peter!
as someone thats hates working on electrical wires, i was able to troubleshoot my problem. much thanks!
You win you made the best video and best explanation for us HVAC dummies. Thank you thank you thank you! My thermostat rabbit hole has ended.
Love the music in the background!!
Craig you always sailing. with the wind nice presentation thank you buddy.
Thanks Nurfet Alic!
Great Video! Another problem is someone used hex head screws to attach the thermostat on the wall. Hex head screws stick out too far and don't allow good contact between the thermostat base and the thermostat. Always important to use screws that are flush with the base.
That would do it, thanks Blue Collar!
Great video, well spoken and easy to understand and learn from. Couldn't have found this video at a better time
Awesome, thanks Karl!
I'm not the smartest tool in the shed but this just made me a little smarter and I was able to fix my thermostat thank you
Great video, just wanna say thank you.
Awesome video,thank you for sharing 👍🏻
Ty for your last speedy reply....much appreciated!!!!😊
That really sounds like a bad thermostat, thanks
Thank you ! Just fix my heat . Jumper wire fell off. Must have happened when Painters removed the thermostat
Thanks Billy!
Thanks so much for making this excellent video! I am sure that you will save many people lots of headaches and problems when trying to install thermostats! Thanks, AC Service Tech!
This is Kenneth from Arnolds Service Company Inc right? Thank you for what you do as well! I still remember my wood shop teacher and the impact that he made on me. May the Lord Bless You and Your Family! If you need anything, let me know! Thanks!
Yes, This is Kenneth from Arnold's Service Company. You and your videos have been such a blessing to me and my customers! Thank you so very much for all your blessings, and for making all of the great and awesome videos! God bless you and your family today and always!
Thanks a lot Kenneth! Have you checked this video out on the thermocouple and the combination gas valve- th-cam.com/video/PiCmfW1rTRY/w-d-xo.html and this one on the water heater thermopile?- th-cam.com/video/RASBzK_XF2k/w-d-xo.html
Great Tips! Thank you! My replacement thermostat was expecting 'C' connection, but my existing thermostat did not have C, but there was wire available, but not connected. I opened the HAVC and connecting the 'C' wire, and connected the new thremostat- but it was not working - I though i blew the fuse. After seeing your video, I realized it is the auto-shutoff safety switch!! once i put the panel back on it started working again. Thank you very much!
Ac service tech thank you for all the great videos!
Thanks a lot Lance! Also the paperback just was released today at acservicetech.com thanks!
Thanks man I learned a lot by the same thermostat model
Excellent help! Thank you!
Thanks Brent!
practical information, thank you ...
Thanks pei broker!
Thank you thank you for your video. It's 1:30am freezing outside and I decided to install a similar stat. Shorted the thing out on the c terminal! Board on the furnace went dead no lights or anything only blower fan capability I nearly sh%t myself I took off the circuit board cause I saw a spark out of the corner of my eye but when I inspected it I didn't see the fuse. I also wired it all wrong as the instructions were incomprehensible to me. Watched this video and now the heat is on!
Very easy to understand! Thanks so much!
You're very welcome!
Great video thanks again
Thanks!
Thanks for the video!!! The little jumper fell out of the R/Rc terminals and I had no clue that was the issue until I came across this video.
Thanks Jeremy!
Thanks for your expertise.
Glad to help!
Hey man good job good instructions can you please tell me where to find the fuses of the boiler because I just put in a new digital thermostat but is not working so I'm just guessing that maybethey were blown earlier on the old one
Great Video. The best I've seen on this subject. I am trying to install a smart Honeywell unit, my problem is per Honeywell I need 5 wires. I found three in the wall that were not used for my older unit. A white one, black one and a ground wire. Where do I put theses? Is one my C wire?
Thank you. This was a really helpful. and saved me almost 200 dollars.
Thanks Bob!
Ikr
How did you save $?
Had I seen this earlier I wouldn't have lost those $200 😆 Damn! Oh well. Maybe next time.
This was VERY HELPFUL THANK YOU
I'm so glad!
Thank you very much, it was a really helpful video!
Glad to hear that!
Having trouble with my thermostat with the old one it had power now when I change to the new one no power have all the wires right I took a snapshot
You saved me 125 dollar visit from an HVAC technician, someone had wired my thermostat wrong and was able to fix it with this! Thank you so much
Thanks Andy!
acservicetech my white wire is going into the AUX port should there be another white white that runs from AUx into Emergency heat?
You can if you want emergency heat to turn on by itself without the outdoor heat pump, thanks
That's good!
Thanks for the breakdown
Thanks Oh Mar!
@1:29, that's when my brain clicked and I realized what I did. Thank you. Your video save me hundreds to have a HVAC guy come out on Memorial Day to replace a fuse that my dumba$$ blew by hooking up the blue wire. Thank you.
Found out the hard way, too. B-is for Black NOT Blue. Go figure- the Blue wire goes to the C terminal. Is there a real reason B goes the C, instead of just using a Black wire as the Common???
Gotta find the furnace circuit board to replace the 3amp fuse. In the morning, good night!!!
Ty for the upload
Thank you!
Great video. You are very thorough and I learn something in each of your videos. Thanks.
thanks MBrickner87!
Hello great vid i have a oil furnace and replaced the old mercury therm with a Honeywell theres one 3 wires b w r if i put them in order heat wont come on if i leave red touch w and blue heat comes on what is my problem thanks again
Also subscribed. Thank you.
Thanks Egidio!
Wanted to thank you for all the great help and videos you make and post!!
Thanks GhostReaperX!
You can't tell from my youtube lol, but I'm going to school for HVAC at the moment so I watch your videos and we have even watched some in class.
I got ya, awesome to hear! Out of curiosity, which videos did they have you watching in class?
We watched refrigeration cycle and one on superheat and subcooling.
Are you at a college, technical high school adult course, or trade school? I am always concerned at how much people pay for some options.
Great Video and explanations !!! Thanks
Glad it was helpful!
Great tips- thank you! It helped
us!
Thanks Debra!
Very informative, thank you
Thanks Parviz!
thank you for sharing!!!!!
Thanks jimbola77!
semper fi..thank you motivator
Glad to help!
Thank you just love this . You make it easy.
Thanks Andy!
I'm fishing the TH-cam community for help. My HVAC system was staying on towards the end of the winter last year. As far as I could tell the both the indoor and outdoor unit ran all the time. Also as far as I could tell the heat strips did not come on. The pipe copper line set felt warm, but the temperature stayed at 70 degrees where I had the thermostat set, it just never would shut off unless I switched it off on the Tstat... Since it was getting warmer anyways, I limped through on the wood heat leaving the system off. This summer the AC side worked flawlessly. I am however ready to troubleshoot to see what is going on with the heat side. Any advice would be appreciated! Great video! Thanks.
Awesome video. I just changed my thermostat and can not get the ac to work when I put it on cool the fan in the outside unit works but no. Air coming out the vents. When I turn it to heat the fan does not work outside but the part of the ac that is inside kicks on. I marked the wires from the old thermostat. I have a red which was attached to rc a blue which was attached to rh, a yellow marked yellow 1 a white marked w1 and one that looks almost white attached to g. I have pics if that helps.
great video
Thanks Jaime!
Very helpful " ur the man !
Glad you enjoyed it freddie!
Outstanding video, thank you. When I initially installed my new thermostat I indeed connected the blue wire to "b". I switched it on but got nothing. No heat etc. Most likely I blew the furnace fuse?
Thank you. From me and my family
Glad to help!
I feel no matter how careful you are replacing a thermostat, there always remain some guess work and further testing! For instance a thermostat going to an air handler, especially one that doesn't have a control board as to which your thermostat is controlling they system and the R & RC Jumper needs to be removed. For example AC, RC is controlling your fan and outdoor compressor and heat R & W is going to your heating systems zone control board or zone valve which is closing the circuit at this point (Powered from the boiler's transformer) so the air handler is passing R & W through the air handler to the heating system supplying hot water through the heating coil at Air Handler. RC & G is turning the Fan on and off! By having R & RC jumped as assumed by previous installer, they look like they have a jumper on but not directly connected! I have seen this a few times where it had that illusion!
Thanks, just switched from 4 wire to 5 wire, luckily the C wire was there just not being used. My heat wasn’t working because I had to switch my red wire from RC to R instead, and put a jumper between the 2
Excellent video.
Thanks Air Mechanical!
highly recommend this purchase!
You Are Good Thank you
Excellent video. TThank you..
Glad you liked it!
Just saved me a lot of trouble and got my family some heat tonight. Great video, great explanation, made my problem solving simple!
Thanks MRCOOL8377!
Awesome!
Question; Over the last few weeks when I go to bed I reduce the heat setting on my heater thermostat to 68. In the middle of the night I hear the heater click on and then clock off before the blower kicks in. This will continue on and off until I get out of bed and change the thermostat setting by pushing the arrow up a few points. Is this an issue with the thermostat or the heater itself? I am not home during the day, most days but on the weekends I never hear this happening during the day.
Great informative video. What is wrong if the fan will not operate in the "Fan on" position, but all else works (i.e. heat and cool OK) in the normal heat or cool mode?
Do you have a wire connecting the g terminal from the thermostat to the furnace or air handler?
What if I have stage 2 ac do i plug my cable to y or y2?
have you ever had a short on the control board ? popping the 5 amp fuse.
I have the same thermostat. The light stopped working on the display. Is there a battery to change?
appreciate all of your videos (& book), has helped a lot with my original problem. Question . .should i replace tstat wire from wall to attic terminal due to ecobee tstat burning up? Few details: . I lost power to thermostat & boards after installing an Ecobee5 tstat, which brought me to your videos. My system did not have a fuse. I replaced the transformer, added a piggy back 3A fuse to the secondary side, still no luck, so I replaced the timer board and ignition control module and finally power back at tstat, boards etc. Once the ecobee was powered up the screen said 'delayed start-up" then read 100 degrees, then 110, then 120! I had to use an oven mitt to remove it. The ecobee contacts melted on the back on one side. Now back to no power. Before moving forward would I need to replace the tstat wiring since the insulation appears to be slightly melted on the copper wiring? thanks for your thoughts if you have time.
I have a carrier gas heater with 4 ton condenser. I want to change the thermostat to the pro 3000. I have a w wire for heat and w2 for second stage heat. Would I put the second stage heat wire in the w on the pro 3000 and just cap the single stage heat wire .
#3 on the switch on the back. For an all-in-one system, with using the jumper, furnace/ac, would u still switch it to "gas or oil" even if its an electrical furnace..?
Thx. for excellent info. 👍
Glad it was helpful!
Excellent video and I subscribed
Quick question where would the black wire go the one that goes to the Transformer
It's a Coleman heat pump unit
Would it be Y 2 E or L
If it is from the common side of the transformer then it would go to C in the thermostat if you want to hard power it. If you have red and black coming from the transformer then black would be the common, thanks
I am installing next and my current thermostat has a blue wire connected to b terminal and not c and everything works now with next should I fix this wiring to c instead of b
Thank You!!!!!
Thank you ❤❤
My heat- off-cool button is stuck. It will go the left towards cool, center, but won't go to the right (heat) when pushed. Any ideas? Mine is the opposite way from the one in the video.
Good video bro thank u for sharing
Thanks for watching
clearly spoken enjoyed thank you . if possible can you show how to use a 4 wire system with no C replaced with a 5 wire stat?
Actually all that is different is that you would have batteries in the stat and not wire the c, thanks Jim!
Nice video. New batteries. All works but No Back Light. Two wire, heat only Thank you
Alot of people are switching their analog for digital thermostats in their RV. The typical Rv 30amps service has a 12 volt (7.5) Red wire that is connected to the analog stat. That wire is no longer used to power the stat if batteries are used in the stat. This is my understading as well as the high and low fan speeds which are brown and blue wires connected together ,which only gives the high speed fan setting (toogle switch installed gives low speed option). Could you advise on this and address this for campers? My camper has red, green, white, blue, yellow and brown wires. Thanks
Also, I put caulking in a hole because thermostat goes haywire by exterior doors or windows opening and closing is bring cold draft for heating start up too soon which was interior is already too warm.
Ty gr8 video again
Thanks jonathan!
Great work and thanks for sharing! Question for anyone who can answer.. my mother in law had some guy install a new Nest thermostat in her home, ac/ gas furnace combo, but now the heat doesn't work. The AC works and the fun runs, but no heat comes out. Problem is, I don't know how the old thermostat was wired.. the next currently has Red to R, white to W, yellow to Y1 and green to G. This all seems right to me, but obviously there's an issue. I appreciate any help!
You might need to go into the settings to make sure it is set up for the correct type system, thanks