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Top 12 Problems/Mistakes when Installing or Replacing Thermostats! HVAC Tips!

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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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Information in this video is intended for educational purposes only. Any work related to the topics in this video should be performed by licensed technicians or by apprentices under the supervision of licensed technicians. AC Service Tech LLC is not responsible for any possible damages or injuries caused by the use or misuse of any information provided.
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Опубликовано:

6 окт 2017

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Комментарии : 447

@acservicetechchannel 6 лет назад

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 a link to the self drilling white wall anchors- amzn.to/2xRvoJh Here is a link to the Pro 3000 24v Thermostat used in the video- amzn.to/2keuUbs Here is a link to the Heat Pump 24v Thermostat with Aux and E Controls- amzn.to/2x8ISBE Here is the link for the Irwin Wire Stripper/Cutter/Crimper amzn.to/2dGTj2V Here is the link to the 3amp fuse 25 pack- amzn.to/2y2zkFC Here is the link to the 5amp fuse 25 pack- amzn.to/2z4SyKD Here is a link to the thermostat 3/32 screwdriver -- amzn.to/2hxt7uK Here is a link to the Fieldpiece SC640 Multimeter- amzn.to/2x8k4Kb Here is a link to the Stanley 6 in 1 screwdriver- amzn.to/2x7NuaZ 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. All of the ACSERVICETECH Playlists- ru-vid.com/show-UCOZR-1IqsAer9wzlvFgb4mAplaylists?view_as=public If you want to support the ACSERVICETECH Channel and receive more HVAC content, check out www.Patreon.com/acservicetech

@drock1383 6 лет назад

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.

@acservicetechchannel 6 лет назад

Always use the same as the system calls for, thanks!

@dansummers4980 5 лет назад

Thank you sir fixed my heat

@kgwoodward1 2 года назад

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.

@cooleyray 2 года назад

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!

@michaels48 3 месяца назад

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!

@daethule 4 года назад

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!

@dcolasono4582 4 года назад

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.

@AH-tx1nj Год назад

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.

@rubenapalma794 5 лет назад

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!!!!

@acservicetechchannel 5 лет назад

Thank you very much Ruben!

@dadsworkshopbykipplabrie7982 2 года назад

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.

@ReneeDooley Год назад

You're a life saver. I knew the wiring was correct but didn't consider the fuse. Thank you so much!!

@jonathandill3557 3 года назад

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.

@stumpy7777 2 года назад

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

@davidguberman4780 6 лет назад

Problem #8 is often the most overlooked and most frustrating problem to cure. Thanks so much for posting pointing this one out!!

@acservicetechchannel 6 лет назад

Thanks David!

@KingOfErehwon 2 года назад

@@acservicetechchannel Consider using a small, plumbing vice grip to hold the wires as you switch the backplates.

@protegosolutions5765 5 лет назад

one of the top thermostat videos on youtube, thanks for your information

@acservicetechchannel 5 лет назад

Thanks protego!

@isbesoooasian 3 года назад

as someone thats hates working on electrical wires, i was able to troubleshoot my problem. much thanks!

@andy2310ify 6 лет назад

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

@acservicetechchannel 6 лет назад

Thanks Andy!

@andy2310ify 6 лет назад

acservicetech my white wire is going into the AUX port should there be another white white that runs from AUx into Emergency heat?

@acservicetechchannel 6 лет назад

You can if you want emergency heat to turn on by itself without the outdoor heat pump, thanks

@ll-bp6lj 6 лет назад

That's good!

@kdouglass7131 5 лет назад

A/C guy came out today and told me my thermostat was bad. He could replace it for 345.00. I said no and found your video. I think I can replace it myself and save about 200.00. Thanks for such a great video.

@acservicetechchannel 5 лет назад

Thanks!

@petesingh292 4 года назад

Why people charging too much money just to replace stat? I charge only $185 here in Northern Ca

@Matt_224 4 года назад

@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.

@sammarshall7463 4 года назад

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???

@sammarshall7463 4 года назад

Gotta find the furnace circuit board to replace the 3amp fuse. In the morning, good night!!!

@MilesKnowsBetter 6 лет назад

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 ...

@acservicetechchannel 6 лет назад

Awesome, thanks

@sgtrollinski8090 7 месяцев назад

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

@TelematicsLegend 5 месяцев назад

Thank you for showing me where the fuses are, saved my mom $200.

@Tito_hvac 3 года назад

Thank you. This is the best explanation I’ve watched about thermostat wiring

@acservicetechchannel 3 года назад

Wow, thanks!

@meatypunk 2 года назад

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.

@davidharris9451 5 лет назад

AC Service Tech, thank you very much!!! Your guidance and teaching has been a tremendous help.

@acservicetechchannel 5 лет назад

Glad to help David!

@joyroc885 2 года назад

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.

@nicolek5747 2 года назад

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!

@aletaking6363 5 лет назад

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.

@acservicetechchannel 5 лет назад

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

@aletaking6363 5 лет назад

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

@allamericanconex Год назад

Nice video. New batteries. All works but No Back Light. Two wire, heat only Thank you

@erpgolfer 5 лет назад

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!!

@acservicetechchannel 5 лет назад

Thanks erpgolfer!

@olay650 6 лет назад

Good tips. Perfect content, not too long, not too short. Great video. Thank you.

@acservicetechchannel 6 лет назад

Thanks Olay B!

@billytrant9512 5 лет назад

Thank you ! Just fix my heat . Jumper wire fell off. Must have happened when Painters removed the thermostat

@acservicetechchannel 5 лет назад

Thanks Billy!

@UremicFrost Год назад

Thank you so much! 4 wire thermostat. AC worked but not heat. I ran a jumper from RC to R and now my father-in-law thinks I'm HVAC certified 🤣🤣 Blessings

@arulmoviemakers 6 лет назад

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!

@wheeltwavel 2 года назад

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!

@johncote2776 6 лет назад

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.

@acservicetechchannel 6 лет назад

That would do it, thanks Blue Collar!

@Kracker215 2 года назад

Buyer beware, Honeywell thermostats keep your house within 1 degree temperature, they don't advertise it in any way I have found, that causes your heater and ac to cycle a lot, when it turns on, not only does it use more energy then when it's already running, it puts much more wear on your pump and motor, I had to talk to one of their techs to find this out! In the long run you pay a lot more in bills! All these people spending all this time to find out it's factory like that. I loved it other than that! Taking it back though!

@virginia347 3 года назад

Very easy to understand! Thanks so much!

@acservicetechchannel 3 года назад

You're very welcome!

@daningram3143 15 дней назад

Thanks for your videos! I’ve installed a new digital thermostat. No matter how long I run the air conditioner the thermostat will not change temperature. The air blowing is 58 degrees. Any idea why the thermostat will not pickup the house temperature? Thank you!

@Gary-ts6dh 3 года назад

9:48 - FIVE MINUTE DELAY! This one bit me hard. Several years ago, I ran around for the full five minutes with my voltmeter checking to see if I turned the correct breaker on, checking for integrity of the disconnect fuses, and making sure I had 24v to my new battery-operated TStat. (Thanks for the heads-up; but, I would have put this one first. I bet I'm not the only idiot out there that doesn't read the installation manual.) When my HVAC/R instructor turned me loose on a system in the lab last night to connect gauges and calculate superheat, he didn't tell me about the delay (he just handed me a set of gauges and an IR thermometer and said go to it.)

@lomex_1417 2 года назад

highly recommend this purchase!

@andrewarzoian4266 Год назад

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?

@bookworm81151 6 лет назад

Thank you. This was a really helpful. and saved me almost 200 dollars.

@acservicetechchannel 6 лет назад

Thanks Bob!

@josevaldez3648 3 года назад

Ikr

@jaredstone9487 3 года назад

How did you save $?

@MajesticL. 2 года назад

Had I seen this earlier I wouldn't have lost those $200 😆 Damn! Oh well. Maybe next time.

@rodgarcia6563 7 месяцев назад

I have a garage heater with W G C and R. It works fine with a basic 2 wire thermostate. I put in a Honeywell programmable unit with no C. I hooked up the R to R with a jumper to RC, the W to W and used the G for independent fan operation. I can turn the fan on but after setting the thermostate it is calling for heat but the flashing led in the heater stays slow, it flashes faster when heat is called for. Triple checked connections, good clean new wires, new batteries. Everything looks like it should work but no heat. Put the old two wire unit back on and heat comes on. I am at a loss. The thermostate is a RTH221B Honeywell Home programmable thermostate and the furnace is a 50000 Btu Heatstar. Also I did make sure to switch to Gas/oil operation on the thermostat. Any ideas? Thanks in advance and thanks for the video

@eazy69ful 4 года назад

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

@karagregory69 5 лет назад

Good Info. I thought you looked at OLD thermostat, take photo of wires before disconnecting wires, and match letters up to terminal letter on new. I never realized G=Green, Y=Yellow etc. Just what ever wire is connected to Y on old, put it to the Y on new regardless of wire color. If green was on Y on old, put Green on Y on new one. It always worked when I replaced thermostats using this method. Some have a switch in the back for Gas or electric heat.

@acservicetechchannel 5 лет назад

Yes always replace new thermostat with wiring like the old one. That is just the thermostat color code that technicians should follow for installations of new thermostats, thanks!

@forexchallenge7379 3 года назад

Good video bro thank u for sharing

@acservicetechchannel 3 года назад

Thanks for watching

@SonicBoomC98 3 года назад

Seems like it would be best to take a picture of the old one before starting the change out

@randywoodruff9989 4 года назад

Great Video and explanations !!! Thanks

@acservicetechchannel 4 года назад

Glad it was helpful!

@douglasmccray2305 2 года назад

I have fumes coming from my vents in my HVAC system could it be from the thermostat wiring?

@ionu4535 5 лет назад

This is what makes RU-vid good; few gold nuggets are out there, but find most are POS. Would have paid $$ to see this video before I replaced my thermo; if I had, would not have blown an attic fuse that cost me $75 on a service call.

@acservicetechchannel 5 лет назад

Thanks Ion U and sorry to hear!

@rymakazlova9629 3 года назад

Thank you very much, it was a really helpful video!

@acservicetechchannel 3 года назад

Glad to hear that!

@karld3155 6 лет назад

Great video, well spoken and easy to understand and learn from. Couldn't have found this video at a better time

@acservicetechchannel 6 лет назад

Awesome, thanks Karl!

@networth8754 2 года назад

My existing system is Gas Furnace and single AC unit. My existing thermostat has C,G,W,Y and R (no jumper). The new Thermostat has the choice of RC or RH with a jumper. (no R). Question: Which terminal do I place the existing "R" wire to? RC or RH? Do I leave the jumper in or remove?

@jacksmail7725 3 года назад

Excellent video. TThank you..

@acservicetechchannel 3 года назад

Glad you liked it!

@Jessiesuain 2 года назад

Thanks man I learned a lot by the same thermostat model

@redskinsfan5227 4 года назад

Great video

@acservicetechchannel 4 года назад

Glad you enjoyed it

@KimDixon30KK270 Год назад

I wish you could help me here in Kentucky! I've had the worst luck with my HVAC since the condenser and compressor was replaced! They said it was my thermostat...2 years later I've replaced the entire system as of last week and it's still cycling off and coming right back on 90 seconds later. My power usage has tripled since the first install on the original system. 300x more wattage usuage than prior year or month, and I can see the usuage by the day, wk month, yr, etc and it aligns perfectly with the first install inside the air handler.They've came to my house at least 25 times with 10 techs. My original system was a Rheem and I think they've done something to make it drain voltage but NO ONE can figure it out. I'm currently sitting here after having surgery, watching videos trying to figure it out while it runs non stop wondering how I'm going to pay the power bill! It's set to 74 but feels like it's actually 70. It runs all night long and if internal temp is registering 74 as it's set on, it still cycles on without the temp rising to 75. I can bump it up to 75 hoping it'll cycle off and instead it comes on. It's as if the temp is wrong or it's pushing electric heat somewhere. Idk but I wish I could fix it😭

@noel888 Год назад

i read that i could remove the programmable section and just leave the wiring in tact. If i get the same thermostat and just replace the old program one, would that wiring be good enough? Also how do i detect the right fuse from my panel when i am alone?

@Comedianmsanita 4 года назад

This was VERY HELPFUL THANK YOU

@acservicetechchannel 4 года назад

I'm so glad!

@mrzif0013 Месяц назад

My 2020 Lennox EL 296 thermostat has failed white screen. I would like to go back to old school thermostat but that not possible. Please suggest a reasonable price replacement for the Lennox upgrade s30 thermostat. I am a diyer and able to do simple wiring.

@JohnSmith-lf8kg 10 месяцев назад

What if all of a sudden the ac does not want to turn off. Especially when it reaches the set temperature and just keeps running, or does not turn off it you manually put the switch to the off position? Is it that the control box went bad?

@jerryjamify 2 года назад

I installed a programmable thermostat but it wouldn't turn on my heat pump so I put my old one back on, it must have been the wrong one or else bad. My heat pump comes on with the old one. With the new one only the auxiliary heat was working,but the AC worked. Is there a certain programable one I need for a goodman it's about 15 yrs old.

@danielmorgan827 6 месяцев назад

What if you only have a white and black wire in the wall. Can still use the thermostat type used in this video?

@JasonMiller-mp8ht 3 года назад

Those of you whom have a black and red wire for thermostat black goes to W and red goes to R

@domingoruiz2904 3 года назад

Thx. for excellent info. 👍

@acservicetechchannel 3 года назад

Glad it was helpful!

@ladonnanew1569 Год назад

We just updated our thermostat & everything works except for the "Auto"? The heat works the A/C works but only when the fan is in the "ON" position? Any suggestions?

@Hi-Tech-Ray 2 года назад

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!

@patriciacs85 Год назад

Any tips for wiring a new thermostat when you have just a boiler for radiators. And only 2 wires coming out of the wall. I tried RH and W/E on the Sensi thermastat and the boiler just turned on

@GeorgiaMade404 2 года назад

Trane systems are notorious for this. I will never buy one again. Old thermostat worked perfectly until I replaced it with a WiFi thermostat and hooked the wires up exactly like it was on the old one. I even cut power from the breaker when I was replacing it

@khaitran3709 Год назад

How can I find the furance in my condo, I don't know where is at so I can check the wiring and check that 5amp fuse also, cause my thermostat does not allow me to go past 50 degree?

@KennethArnoldarnoldservice 5 лет назад

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!

@acservicetechchannel 5 лет назад

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!

@KennethArnoldarnoldservice 5 лет назад

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!

@acservicetechchannel 5 лет назад

Thanks a lot Kenneth! Have you checked this video out on the thermocouple and the combination gas valve- ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-PiCmfW1rTRY.html and this one on the water heater thermopile?- ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-RASBzK_XF2k.html

@williamflynn5647 6 лет назад

Hello Great video makes it easy to understand what is happening with a t-stat and the HVAC equipment

@acservicetechchannel 6 лет назад

Thanks William!

@daniellambertsr.713 9 месяцев назад

Hello I'm replacing my old Honeywell thermostat with a new Honeywell the RTH111D Series I have seven wires coming from the wall I'm puzzled by the white wire that is labeled E wish my new thermostat doesn't have wondering where does the white wire supposed to go.

@teabee44 Год назад

Can a 2 wire furnace run a t-stat without batteries? It would need a hot (r), common (c) and heat (w) right?

@kennethmccann6402 4 года назад

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.

@MMAGUY13 Год назад

I have a Honeywell thermostat it only has two wires I saw where the one wire came the other wire I didn’t see where I pulled it out it had two holes so I put it in one of them my temperature will not go up totally not turning the burner on do you know what I’ve done wrong could I have used the wrong hole or is it something else

@adammillers6918 Год назад

What would cause the ac unit to keep running and cooling house even after it reaches the desired temperature?!

@PJMDValley 3 года назад

Good video ..... most common problem is people don't do proper research.

@AZ_sunshine Год назад

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.

@l337pwnage 5 лет назад

That's just cruel making us watch that thermostat wire drop inside the wall. ;p

@acservicetechchannel 5 лет назад

Ha ha so its happened to you too! ha ha. It has happened to all of us!

@ginosmovies 5 лет назад

Yeah, I was minding my own business, having a coffee with my client and she decided to move the wires, and the rest is history! .... lesson: finish the job at hand, and then have your espresso! LOL!

@tiger.6509 5 лет назад

Have you ever tried a large paper clip just like you would with Paper so the wire doesn’t fall into the wall

@TheMaster5150 5 лет назад

He took me for a ride...I gasped, had flashbacks, then logic clicked in and thought the same thing "that was cruel".

@danboy.213 2 года назад

I have a Honeywell furnace. I replaced my thermostat but I’m not getting power my fuse is good. The light on my switch board not lighting up

@izzyfritz1714 3 месяца назад

Some idiots came to try to fix my heater and didn’t know how to fix it so they changed the good mercury thermostat I had here to the Honeywell RTH11B digital thermostat and it was preventing 70 degrees in here but they set the new Honeywell at 76. Now it’s only 3 degrees difference in temperature but how do I set it to be at the correct temperature?

@DC-xx4kv 3 года назад

What about when the wires are not color coded correctly???? I did not take a pic of my old thermostat before attempting to wire the new one. The wiring is correct on the new one and I can’t get the old to work. So the home was built with the wires not connected as expected. I have tried many combinations. Nothing. Help.

@tptm100 3 года назад

Question: If you were to test a furnace control board that had a blown fuse with a your meter probes where the fuse goes would the meter or the transformer get damaged because the cause of the short was still present when you repower the board?

@nurfetalic205 6 лет назад

Craig you always sailing. with the wind nice presentation thank you buddy.

@acservicetechchannel 6 лет назад

Thanks Nurfet Alic!

@josephvhoang 2 года назад

You Are Good Thank you

@brandie1937 2 года назад

Need help. Trying to install nest thermostat but old thermostat does not have a c wire connected however there is a trimmed blue wire without nut attached and another red wire next to it (also trimmed and without a wire). There's a black jumper from rf to rh. Live in s florida and need help 😭

@The-H-inADHD 6 лет назад

Wanted to thank you for all the great help and videos you make and post!!

@acservicetechchannel 6 лет назад

Thanks GhostReaperX!

@The-H-inADHD 6 лет назад

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.

@acservicetechchannel 6 лет назад

I got ya, awesome to hear! Out of curiosity, which videos did they have you watching in class?

@The-H-inADHD 6 лет назад

We watched refrigeration cycle and one on superheat and subcooling.

@acservicetechchannel 6 лет назад

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.

@elsooorey 4 года назад

I should choose which one gas or oil or the electric or heat pump?

@shaunaholt4167 2 года назад

I have this thermostat and I am confused by one thing. I have central electric air, but gas heat. So, do I need to flip the switch on the back to electric in the summer and then switch it back to gas in the winter?

@eileengravius648 3 года назад

when Istarted to install new thermostat found that the wires were too short. what can I di

@paulhong732 Год назад

Thank you ❤❤

@craigzilla100 5 лет назад

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!

@acservicetechchannel 5 лет назад

You might need to go into the settings to make sure it is set up for the correct type system, thanks

@mikeharriott179 2 года назад

I wired a thermostat 3000 for my heater and my air conditioner. When I go to turn on air the heater gets a impulse to try and start. So the air pulsates then stops. If I put the heater on it work perfectly. Has me baffled.

@andrewsims7182 4 года назад

I'm fishing the RU-vid 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.

@user-vj4ih9pp9z 4 года назад

What if I have stage 2 ac do i plug my cable to y or y2?

@mbrick 6 лет назад

Great video. You are very thorough and I learn something in each of your videos. Thanks.

@acservicetechchannel 6 лет назад

thanks MBrickner87!

@Sc19869 5 месяцев назад

Why would you cause a short, blow the fuse touching r and c. Thanks you

@jesp8934 Год назад

Thank You!!!!!

@gupttura2766 4 года назад

Thanks for the video...very good explanation for learners. I bought a Honeywell T5 WiFi thermostat. After opening my existing honeywell, I realized there is no wire in 'C' terminal. I believe I would need C wire to supply power to new thermostat. I checked the board on the furnace and it has a RED wire in C terminal...not sure where this red wire going? WHat options do I have to install wifi thermostat? In my thermostat, I have wire in Rc (red), Y (blue), W (black), G (green) just 4 wires in total.

@acservicetechchannel 4 года назад

You need to run an additional wire or possibly do away with the g wire and use it for a common. You would need to test it though in heat and cooling to make sure it still turned the blower on. If your indoor unit does not have a control board then you cant try that. Also some boards do need 24v to g, others dont need it.

@gupttura2766 4 года назад

well I hired someone to do the job because I also have HRV system. My board on the furnace have too many wires to figure it out. Thanks for your suggestions. We use G wire for C. It is working ok.