How to Tell if Your Home Thermostat is Bad - Bypass it and Find Out

[@romeparrilla8307]

thnak you so much for all your clear videos,you are actually helping lots of poor people,god bless you always my friend,cheersssss.......

[@mcelfreshiii]

Brother you just saved me a $200 service call, and gave me an excuse to get one of those nice app based thermostats. Plus it's my birthday today. It started off bad, but seeing that I saved at least $200, and learned a bit about my furnace, that's the best gift I've gotten all day.

[@WordofAdviceTV]

Happy Birthday bro!!! :) Glad to hear the video helped you figure out the furnace problem and get it fixed! Enjoy the new thermostat and stay warm!

[@jojo-tn5hj]

I don't know ANYTHING about hvac..but recently had a recharge since i have a slight leak. I'm sure many have told you already but I just have to say, THANK YOU so much for all your videos. I've watched them to learn and understand what's going on so I can educate myself. You are doing the community such a service. You are concise, clear and don't spend your time wasted on technical jargon. IMO, that demonstrates how well you know and and understand what you do. Please don't ever stop sharing whatever you do, you are so absolutely appreciated by the community!

[@JoseRamos-ob6pw]

lol that’s what I’m saying It’s green ground?

[@eddyvideostar]

Dear Jojo, The technical jargon is still education.

[@ricksminecraft]

Wow! I can't believe what I've learned in less than one hour here. Thanks. I am an electrical and computer engineer, but until today, my central air system was just a big "black box" to me! Glad to have that cleared up.

[@eddyvideostar]

Dear Rick, Really? With your lofty credentials you were still dazed and daunted. I pitty the elders who may touch the *third rail!*

[@markdierking9347]

Jay, after replacing the control board didn't solve the no heat problem and numerous other checks using your vids, I verifieded with a paper clip at the furnace and then the thermostat that it is the thermostat that I replaced a few months ago either was bad then or more likely I didn't throw the breaker and ruined it. I have just ordered another Tstat. Thanks for all your help. You saved me again and never have had to spend the money on a teh visit

[@emduplessis9996]

Thanks, Jay. Great video. It helped me to determine my thermostat is bad. I had a power outage this morning. When power was restored my ac fan came on blowing harder than usual. I turned the thermostat to off and the fan continued to run. Only after shutting off the circuit breaker did the fan stop. So I did your test using a coated paperclip and snipping off the coating at each end of the paperclip. I jumped from R to Y and turned breaker back on. Outside unit came on to cool. I have been a subscriber for months! Thank you for helping so many people such as myself.

[@galagatron5319]

Man, you saved me! My thermostat was bad. Weird because I bought a honeywell cheapo several months ago. What happened is I turned on ac for the first time and heat seemed to come on and so did the compressor at the condenser. I turn off the thermostat and seemed like 7 to 8 minuets before it finally turned off. Anyway, I jumped red and yellow and boom , my ac is throwing cold air. I will be at home depot in the morning. Thanks man for this video and all your videos. I learned alot tonight.

[@Doc62J]

So glad I found this video. I thought my contactor or short cycle relay was bad. After watching this and jumping the terminals I determined I had a bad t-stat. New batteries didn't fix it. New one installed today and everything works! Thanks for posting this.

[@alb4580]

Watched Several of his videos ... They are exceptionally informative in layman terms. His simple details on the videos leave little to question... My hats off to him! and thanks for saving me a wait and a service call.

[@captain9442]

OMG THANK YOU!! I tested the board numerous times, everything had power but the inducer didn't have power. Finally I found your video and jumped it using a paperclip and BOOM the furnace turned on and was making heat. Ordering a new thermostat now, thank you so much!

[@PinayPdx]

I dont get it? Why did u order a new thermostat if the furnace turned on? Does that mean something is wrong with the wiring?

[@captain9442]

@@PinayPdx The furnace was turning on correctly while jumping the wires using a paperclip as he has shown in his videos. This told me that the furnace was OKAY, and the thermostat had a bad component in it and needed replaced.

[@brookeanderson7840]

PERFECT! EXACTLY what I was looking for! Our thermostat broke (new one won't be here for a few days) but our AC was fine! Just needed to turn it on!!!

[@tanyaroy5409]

I am very appreciative....you deserve to be recognized for the help you offer....believe me without your video I would literally bake in my apartment....I live in Arizona and someone I live with took the cover from the thermostat so I would have to suffer the heat.....Yes crazy right? But that person only wants to see me suffer...and be hurt....or have to struggle....anyway enough about that! Your awesome and I just want you to know that I am so grateful and could never thank you enough! You are needed for your knowledge in this matter. Thank you! Thank you! Thank you!

[@joseruiz1437]

Thank you my friend have no words to express how much I appreciate all of your help, you have saved me a lot of money. Wishing you the best.

[@joegatton4138]

This channel has saved me so much money. Tip this guy!

[@billhandymanbill2775]

Great video. Thanks much! As a suggestion, I would first start with red and green wire (fan) with the jumper since there is no timer or limit switch on that circuit. By using the red and yellow (A/C) you might turn on the timer/limit switch because the A/C compressor has a high and low side for pressure and possibly damage the A/C unit. If you activate the A/C timer/limit switch, the A/C unit may not operate until the time/limit switch times out.

[@rmsevastra]

Great job! You are a very good teacher. Explained the essential elements of the problem/solution in a easy to understand and concise manner. Thank you!

[@WordofAdviceTV]

Thanks! Happy to hear you liked the video :)

[@TheFilthy13]

Thank you again !!! You explained everything very simply on how to trouble shoot the thermostat , to eliminate the thermostat from the AC or the heating. I did this at my niece's house and found the problem was the thermostat . Thanks again !!!

[@toupsclassroomtoupsclassro9557]

You Sir are a blessing Thanks so much for sharing. A friend had her condenser fan making noise so we ordered a new one but shot some lube into the shaft and now it is quiet 2 days now. that was a diff vid of yours

[@1ugh1]

This is Da' BOMB. Now i don't have to swelter while I'm waiting for our new thermostat to come in. Nice and cool in TN, USA - Thanks!

[@67gt500snakebite]

Thank you for your Videos. They have helped me out a lot. And no the video was straight forward, and not confusing at all. We DIY People appreciate your work.

[@luisestrellamdx]

Great job my man . appreciate the information and the way you broke it down very clearly. Definitely a help. Happy Holidays!

[@alamocolleges]

What if you are going from an older 4 wire thermostat to a newer thermostat that specifies a green, fan wire? The new thermostat is the Honeywell 6580 that you showed on video. The HVAC is a Rheem

[@jewelswinfield]

Thanks for your explanation. I found this jumper wire by my air handler after an HVAC inspection. I thought something might had come loose, now I know they were probably using it to test it.

[@ericgarvin5678]

Just wanted to say thank you. Ac went out on my 8 year old house. Replaced capacitor and contactor because they are the least expensive parts but unit wouldn’t kick on. Turns out had a bad ecobee thermostat I bought after building new home.

[@mickjagger3274]

Thanks for saving me from freezing, you are simply great. Everything you said worked as in your video, my heater is now running and the house is getting warm. If I understood right putting jumper wire between R and Rc will make both cool and heat work. Before I had the wire in Rc only and AC worked fine but heat didn't.

[@WordofAdviceTV]

Happy to help! Yes, that is correct. Some thermostats have Rh as well. (power to heating). Glad to hear you got the heat going again! Stay warm! :)

[@robvoyles]

RC and RH are separated to accommodate systems that have two transformers. If you only have one transformer, you terminate to either one and have them jumped together. Most stats will have a factory jumper already installed as most systems have only one transformer.

[@essakadiri8577]

One very important thing he forgot to mention is NOT TO JUMP "R" to "C" or be VERY careful not to touch the "R" to "C" as this will burn the fuse on the control board or trip the low voltage fuse inside the furnace. In most cases you will not even know you did this as it will not spark or anything. The fuse is like a car fuse that sits in a slot on the control board or sometimes a button on the housing where the control board sits.

[@josephguida5432]

Excellent comment.

[@abstractlight1620]

What color is "C"?

[@essakadiri8577]

R is usually the hot wire with 24 volts and C is the neutral wire, so if they touch it is like putting a wire from one hole in an outlet to another in the same outlet !! but because the voltage is 24 and not 110 or 220, it usually will not spark and not electrocute someone.

[@TiE23]

Yeah I just accidentally jumped R to C (red to blue in my case). Thanks for revealing the fuse in my furnace. Found it. Going to the auto shop tomorrow for a replacement 3A blade fuse.

[@amberwilson6246]

I just jumped R and my entire board sparked and went blank…uggghhh

[@joncrosby8988]

There certainly are things that are much easier to understand, than they are to explain! You did a very fine job. (I even got it the first time, before the well summarized recap. Thank you for taking the tine to share!

[@gopalpatnaik4781]

Thanks! Now I know my thermostat is busted, so I ordered an new one. Saves paying the HVAC guy. Very clear.

[@biblioholic7139]

Thank you so much. Just got my furnace back on after my thermostat died using a 📎 because of this video 🥳

[@eddiecalderon1863]

I wanna thank you! This video is so well explained and helped me save so much money. Keep up the great work!

[@AdmiringGolfBall-jj8jm]

Thank you, sir. I learned a lot today. Keep doing good work. You're a great teacher.

[@jcr7434]

Thank you so much....I was with out a.c. I did this and it worked...Im changing the t-tat tomorrow

[@Harleyguy03]

Thanks Pal. I have an 𝗢𝗟𝗗 Perfection furnace. Built like a tank, very simple. No heat so first I changed out the thermocouple, nope. Then checked out the transformer which was within spec. Next was the Baso switch, nada....I'm running out of stuff 𝙄 can do before I have to call a repairman. Didn't think the thermostat would be bad. But as a last ditch effort I checked it out per your video. 𝙎𝙪𝙘𝙘𝙚𝙨𝙨 !! the burners came on. Now to return the Baso switch and get a new thermostat.....𝙏𝙃𝘼𝙉𝙆𝙎!! Oh yes, 𝙇𝙞𝙠𝙚𝙙 𝙖𝙣𝙙 𝙎𝙪𝙗𝙨𝙘𝙧𝙞𝙗𝙚𝙙

[@meetrajasekar]

Great Video! Thanks a lot. I tried jump start and air conditioner is started. Replaced Honeywell thermostat. Saved lot of time and money!!

[@WordofAdviceTV]

Awesome! Glad to hear the thermostat bypass helped you pinpoint the problem! Thank you for coming back and commenting, stay cool! :)

[@fse9449]

My Symptom: Air Conditioning working fine with no Issues. But when I would turn on the heat I would get a wiring error on the Nest E103 W1. Note: the Compressor would short cycle in heat mode but not in cooling mode. After about 10 minutes of this I would get the crossed wrenches symbol on the Nest. This system has been working for 4 plus year prior to the error message. Love your AC videos! FYI I have a 5 Ton Trane handler and a Trane Model 4TWX8060A 1000CA Compressor. When I jumped the R1 and W1 to by-pass the Thermostat it blew the 5 amp fuse in the air handler. Not sure what I did wrong? However, once I got the fuse replaced I abandoned the thermostat by-pass test and re-did the R1, Blue Common, and W1 connections at the compressor and now all seems to be working. Thank you for all the helpful videos!!!

[@merashivam]

Sir Jay! thank you so much for spreading the knowledge. Your jumping advice resolved my problem.

[@joey-jo-jojr.shabidoo1845]

Thank you for this great video (and series) Jay. My A/C wasn't starting up, so after some investigation I determined that the major components in the AC unit appeared to be fine but the contactor switch wasn't engaging. I viewed your video on the top ten reasons for that not working and landed here. I jumpered my thermostat and sure enough the contactor engaged and the unit started cooling so I knew with confidence that the thermostat was faulty. As a bonus I found an unused fifth wire running to my thermostat that I was able to connect to common on the furnace control board so that I could get a WiFi enabled replacement that didn't require batteries (it might even be the same Honeywell unit you have pictured in the video). I should also mentioned that the unit I replaced seemed otherwise fine - the display looked okay and the furnace fan was still blowing (I did replace the batteries as a cheap test anyway but it didn't help). So it would appear that a single system is capable of failure on a thermostat without the others necessarily being bad too. Thanks again - I loved being able to figure this out by myself without making a service call (or buying replacement parts at random to see if that might be the solution).

[@WordofAdviceTV]

Glad to hear you were able to track down the problem and get it fixed! People like you are the best :) Many people would only watch one video for a couple minutes and then comment right away asking, "My AC doesn't turn on, what do I do?" You actually took the time to watch the needed videos and figure it out. Congrats on repairing it yourself! Next time around it will be easier ;) Thank you for commenting and sharing your experience!

[@karlamen8321]

I have a Honeywell stat and have a jumper between r an e.g. or r and rc is that. Correct karl

[@karlamen8321]

@@WordofAdviceTV l

[@JonathanTran-e5j]

Jay when I bypass the red to the white ít burned out my fuse. Every time I tried to put in a new thermostat ít burned out the 3/5 volts fuses. What’s going on with the unit? Thanks!

[@WordofAdviceTV]

That means you have a short somewhere. Most likely the white wire is broken, cut, or bare somewhere and is touching something metal. I would start by investigating the thermostat wires in the furnace. For more help on chasing down shorts, this video may be helpful: kzbin.info/www/bejne/apaXqKaoqqyGZtUsi=_XH3ltndGJ4AXX5H

[@joem500]

Greatly appreciated this video. You're saving a loved one a lot of money. 🤜🏼💥🤛🏼

[@kyla1828]

Thank you so much! After watching three of your videos and following the trouble shooting suggestions I found: 1) we had an abandoned mouse nest in the outside A/C unit 2) our thermostat is faulty. I’m off to get a replacement now! Thank you again for saving me a ton of money and not having to make a service call!

[@WordofAdviceTV]

Glad to hear my videos helped! Thank you for watching and commenting!

[@kyla1828]

So, replacing the thermostat made the outside unit start working again, but the air blowing through the vents still isn’t cold. :( Guess it’s time to call a repair guy?

[@WordofAdviceTV]

@@kyla1828 My guess would be that the compressor outside is not coming on. Only the fan is running which makes it look like it's working normally. Perhaps a chewed wire or a bad capacitor? It is up to you though.. I have plenty of videos on the topic that you can use to track down the problem or it's time to call out a tech

[@melihmorgan]

U deserve more than words of million thanks... If I wanted to install a new ther... how difficult is it ? I never had to replace one b4 I got 4 wires, Red Green White n Yellow

[@paulp5656]

You sir are a wealth of knowledge! I'm subbed! I am having these issues at present and came across your channel and have been watching the videos you posted. My furnace just started short cycling recently and I am trying to troubleshoot it with out calling for repair but that option isn't off the table. I have a lennox elite g50uh. I don't have the on/off switch at the furnace so I have to trip the breaker. I cleaned the flame sensor though it really didn't look that dirty as compared to what the videos have shown it can look like but problem remains. I will replace it since it doesn't cost much and see if that fixes it. Blower fan starts, the igniter lights,, I get flame but it turns itself off. It either turns itself off quickly or turns on but stops shortly thereafter. I've wanted to replace the thermostat to something a bit more modern (and I'm not sure if this is the problem).

[@fitsumb4009]

You are the best on how you explain the process of troubleshooting. I have question for you. One Smart termostat Nest was set to Heating. But the system turned on the AC during winter and caused the evaporator to freeze. For troubleahooting:- 1. Y1 is removed from the circuit board at furnace, and removed the Nest thermostat face. Y1 still connected on terminal plate of thermostate. And It read 24v on Y1 at furnace side while termostate is not even covered. If Y1 is removed from termostate terminal, it has no voltage down the Furnace side Y1. I believed the Y1 is getting power at terminal plate of thermostat. Which means RC was creating direct connection to Y1. What do you think?

[@m.n.3490]

Great video. I am trying to relate your video to my problem, and I have a question I hope you would answer. My furnace issue is the main burners don't come on. I have a millivolt furnace and millivolt tstat (no AC), so my tstat has only a red wire (at RH), and white wire (at W) (and a black wire from RH to RC). I have 638mv on the gas valve between the TH to TH-PG, and also from TH-PG to PG. There is also a LIMIT in the circuit between the gas valve and the tstat. I put my meter on the RH and W screws on tstat's base plate - and read 0mv . SHOULD I READ 638mv THERE? I also put a jumper wire across the Rh and W screws. IF I should see 638 mv between RH and W in tstat, seems like my issue would be the circuit from the TH-PG screw on the gas valve thru the LIMIT and to the tstat? I put my meter on the two screws terminals of the LIMIT, and saw 0mv - so I think that means the LIMIT switch is closed. I also put the meter on the two spade wires going onto the LIMIT and saw 638mv there. Oh, one more clue, I can manually turn the main burners on by putting a jumper wire from TH to TH-PG on the gas valve. I'm not sure how else to test the circuit, and I don't know it the circuit is faulty, or if the gas valve is faulty? This is an intermittent problem for the last few days where the main burners don't light up. I appreciate any advice on how I can further troubleshoot my millivolt furnace.

[@SVMSICE]

Exactly what I needed to know, beyond clear instructions lol. Thank you!

[@portescity2299]

Thank you very much for your vídeos, I appreciate it very much !! Just one question to bypass the thermostat should the unit be off? Thanks

[@WordofAdviceTV]

It doesn't have to be off. Just be careful not to touch R to C as that would be a direct short and will burn out the fuse.

[@marycallaway2963]

Word of Advice Thank you! Thank you! Thank you! I'm a 69 year old women and I just fixed my air conditioner!

[@getsmartpaul]

FYI, It just started getting warm and my A/C stopped cooling/working , the Cool temp was set to 83 and the current temp in house was 85. The fan in the house was working but I went outside to see if the compressor/fan were going but it was NOT. So, it was NOT being turned on by the thermostat ( or the fan/compressor/capacitors were bad ). So, I changed the batteries ( 2 AAs ) and then tried to turn on the Thermostat but it stayed in the OFF position no matter what the COOL or HEAT setting was. So I went to chatGPT AI and it said to press the RESET button on the thermostat ( using a small screwdriver to push into the reset hole ). Voila , the Thermostat re-booted and I was able to set the Cool temperature and startup the A/C. So, with a good DIY attitude and Jay you can fix things too !

[@mkalfriend]

I liked the way you explained the video. Much easier to understand. I always be watching your HVAC video. It be helping me out. Thanks

[@HyzerDyez]

These hvac videos are amazing my dude!

[@lex6794]

Thanks Man, trying to be an HVAC Technician!

[@1xicano]

I would like to say thank you. Your video was easy to understand and very informative. After following the steps you described i was able to determine that i had a faulty thermostat. Once again thank you.

[@jackburns5373]

Thanks for all the videos Jay, I was in school for hvac before covid came, all your videos on all this are really helping fill in some blanks, only on video 10 of 60 for your ac videos! plan on watching them through! thanks again! big fan!

[@carloscruz7317]

2:26 is the single most considerate thing i have ever seen in my life. faith in humanity restored.

[@geoffhoweth]

@5:01 the fan will not come on it will frezzeup the unit also jump the g wire to TC term

[@actechformallyyomama746]

Geoff most new furnaces require you to hook up the yellow wire to the control board. This is to bring the fan on in high speed for cooling. If you turn the fan switch on at the stat it brings on a slower speed. The way it used to be is you hook up the yellow to the condenser wire without hooking it up to the control board.

[@tompham4272]

Great instructions video for thermostat test. Easy to understand. can you speak slowly For next video please????

[@babur729]

What a terrific way of explanation 👌 Keep up the good work .

[@davidzorko6791]

You did a fantastic job, explained everything well on what was going on with everything. Used your testing method, fixed my issue. Thank you!

[@jollyscaria1922]

Rc 24v power from cooling tranformer R24v power fro heating transformer ycomperssor contacter y2 compressor conttacter stage 2 g fan e merfncy aux het rely lseds out put when set to em heat c 24v comon ..

[@MadaraUchiha-xg6et]

I wish I could’ve seen this video before .. I remember I didn’t know what to do and i call an ac service.. but im glad i did subscribe to see all videos and learn more from a professional..

[@WordofAdviceTV]

Hi again Madara! :) Thanks for subscribing and watching my videos! Hopefully from now on you will be able to fix all the problems yourself! With all the self-learning you are doing, I am sure you will figure out any future problems.

[@alexvlasov2301]

very good! stay short in explanation and right to the point! as shorter the videos, the better it helps!

[@SupernovaSun77]

Great video. So for the nest I have it says I need a common wire. I bout the 24 v adapter. Plug the white n black into C and the white into R with the red wire too tight?

[@susanheath1813]

Another excellent video but sadly nothing happened on jump. Have been going step by step at least I can rule out the thermostat. No fuse in sight, connector works when pushing in, have a Payne and no obvious or accessible float valve when I tried to check. The mystery continues thanks for sharing your expertise

[@davehysom2636]

Exactly what I was looking for; thanks, esp. for the excellent camera work. As a bonus, I get to buy a new toy: magnetic jumper; never knew that was a thing.

[@vatcheohanian2565]

A little help is much appreciated! On my board I don't have R by itself and C by itself. I have RC, RH, B, O, Y, W, G

[@WordofAdviceTV]

You should look up heat pump thermostat wiring since it seems like that's what you have. Here's a short summary: RC is power to cooling, RH is power to heating. These two are often jumpered together (internally or with a jumper), as if you only have one R terminal. O or B is for the reversing valve O or B is the common. Just look what color wire goes to C in the furnace to confirm. Y is cooling W is heat G is fan

[@vatcheohanian2565]

You're right the RC/RH are jumpered together. I followed your advice and when I connected the R and the Y, the AC started running so I have a problem with my thermostat

[@sputaru]

Well done and thank you for that awesome tip. My unit is not working and your advice, gives me more time to consider options. Great safety comments too, really appreciate you!! I do have a question, my issue with my AC is I accidentally disconnected the wires from the outdoor unit to the sensor. And the wiring the installer did was to connect to the same outdoor safety switch that brings the line to the load. I can't find any advice on how to reconnect the sensor wires.

[@timjb3376]

My HVAC Tech can't seem to find an issue with my furnace unit. (12 year old 1 stage unit house built west coast in 2008 attic unit which, I am not that flexible in maneuvering around) What I am experiencing however, sometimes (more often than not with heating)is the heat will come on (not always), then the fan will either be a delayed in turning off by 30 minutes by up to an hour and a half after reaching target temp. Or the the fan won't turn off at all unless I manually go to the thermostat to the force a fan idle signal be sent to the control board which will then turn it off around 15 to 30 minutes later when it use to be about 5 to 10 minutes after the heat cycled off. I have tried taking the thermostat cover off to turn the fan off but the fan keeps running. He did say their is a fuse in the unit but it is not blown and previous visits has ruled out rollovers, and high limit switch triggers. When I watch the thermostat I will hear the system cycle down when it does heat and reach target tempurature usually around 73 deg, but the thermostat fan will never switch to fan idle and 10 seconds later the fan kicks back on and stays on. Then after the fan cools the house down again the furnace will kick on and reach target temp and then sometimes the signal will successfully turn the thermostat fan setting to idle sometimes it wont. So I was curious if this sounds like an issue with my 3-4 year old SMART thermostat, or if something else might be causing the issue.

[@patman6816]

I have a NEST upstairs and downstairs. Upstairs is an American standard Golds furnace and the heat has been working fine and the AC worked fine at the close of summer. I just had carpet installed upstairs and the installers turned the heat way up as they said it helps with the carpet settlement. It went up to about 77 degrees and we usually keep it at 70. They left at night and we turned on the AC since it was so hot and the fan came on but the compressor downstairs did not and does not even hum when trying to turn on. I did your measurements from the last video and the relay measured .8 ohms. Ordered a new relay anc cap and new relay measures 14 ohm and cp also good. My control board upstairs has a 5 v fuse but it is not blown? I have 28V going to red terminal; and white terminal going to the NEST. Back downstairs, I pulled leads off the relay and measure volts there when AC engaged on nest and I only get 10V??? If I measure leads upstairs where 28 v is, it is 24V. As you showed, I event used the unused pair of wires going from upstairs to downstairs relay and still only 10V downstairs. I can manually push in the relay and both the fan and the compressor come on???? I even tried swapping the NEST from downstairs with upstairs. 24v transformer tests good. MY NEST downstairs is wired different than upstairs but both have been working for over 8 years. Downstairs AV unit is different brand. Control board? Why did 5V fuse not blow when original relay shorted?

[@TUANVU-k4c]

Thanks you so much! Your video are very very helpful!

[@hg2.]

Thank you so much for taking the time to make this. For some reason,most if the other AC vlogers rush through the "jumpering stuff" like we're supposed to know it like the backs of our hand. Thank you for taking the time to spell it out.

[@thereallevi9543]

Love your channel I just replaced my units battery and contactor it was working for a day but this morning I went to check on it because for some reason it was not turning on and there was a little wire that was broken so I reconnecting it but my air has yet to turn back on?

[@barbarascott5794]

Thank you so much for your explanation! You saved me a service call at the very least and possibly being upsold into a new system. My confidence level has risen!

[@PATTI1962able]

Question I have is the temp gauge in the thermostat says when it reaches hot or cold set temperature. This was not mentioned. My cooling temp set to 75 cooling but will keep running way beyond that before shutting off. What is going on there? I manually shut it off and on...not the best. Thanks.

[@WordofAdviceTV]

That sounds like a bad temperature sensor in the thermostat. Can't really fix that so the fix would be a new thermostat.

[@derekc6713]

Thank you for the great video. I have a question with regard to the bypass. You mentioned that it is better to turn the furnace switch off After you find out if the thermostat is getting power to do the bypass. How can the motherboard gets power to turn on things if you switch the furnace off, am I missing something?

[@KM-kg1tc]

Great Videos! Very thorough and clear. I decided that some of those magnetic jumpers would have come in handy a few times so I ordered some. I was glad i thought to see if you had a link for them, which you did, so I cleared my cart and used your link instead. You deserve the support even if it is only a little.

[@greenbean5059]

perfect explanation, thank you Sir!

[@troypick2825]

That was a good advice but I have a question for you my furnace keeps short cycling and never gets up to intended heat what should I look for and can I jumper this to bring house heat up

[@mikealexander2005]

Awesome video. It worked. Just one question and it's probably a stupid one. That's all I need to do until they can come fix the thermostat right? It's running now and will continue to run until I flip the switch. Is that a safe way to run it?

[@hvac24]

Hey Jay Where can I find those magnetic mini clips? Off Amazon? What do I search up?

[@WordofAdviceTV]

These are good ones: amzn.to/3WcQEEn

[@qiaochen6066]

i have only heating furnace but it has two wire white connect to w, and red connect to B, is red suppose to connect to R? i want to by pass thermostat to test if it's bad or not can i connect w to B? would it cause any issue?

[@rickeykeeton4770]

I replaced a thermostat a few months ago. When I tried to get the heat to come on, it would not come in until I put a jumper from RC to RH. I only had a the red in RC to start with. Only thing I could figure was RC was power for cooling and RH was power for heating. The jumper did the trick, or seems to have. Have a question. The inducer motor seems to have a bearing making a slight squeak. Is this from not being on since last winter? Think it will go away in its own? Could I get by with trying apply a little bit if oil on it?

[@thelmahall2284]

Hi i have a coleman hvac 3 ton unit and I can't find a switch to turn off the power?

[@neilforrest8030]

Great tutorial…I installed fresh batteries, but still no illuminated display. should the new batteries not return the screen function? Thx!

[@WordofAdviceTV]

Thank you! When you replaced the batteries, did the battery contacts in the thermostat look corroded? Sometimes that prevents good contact so the thermostat doesn't power on. Otherwise I would suggest this video for more ideas on what to check: kzbin.info/www/bejne/rJqWgH2rfMuUl8Usi=iZ0BnHCQVljp5YgN

[@hardknokker]

Very helpful, thank you!

[@2LIVCREATE]

Thank you for sharing! I TRULY APPRECIATE your vid of CONCISE INSTRUCTIONS 👌🔧 😊

[@WordofAdviceTV]

Happy to help! :)

[@orange44number]

Great informative video. I have question for you. I have a battery powered themostat. When I detach it from the wall I can test the back with a multimeter via continuity. My blower fan works when on cool but not on heat. There it continuity between the R power and G fan in cool setting. But when I switch the thermostat to heat, and the thermostat shows its on, there is no continuity between the R and G pins (thermostat not giving power to the blower fan?). Thus I think the problem is the thermostat. Can you confirm, or does something in the unit itself tell the blower fan to come on when its on heat?

[@ashovi]

orange44number I'm having the exact same thing happen. Did you get an answer ever as to why is happening?

[@ashovi]

I'm having the exact same thing happen. Did you ever find out what it was?

[@orange44number]

@@ashovi After some additional research, the thermostat was fine and the testing was normal. (Mine is a gas furnace and the unit tells the blower to come on with a limit switch) So the blower for the heat gets powered differently than it would on AC mode. My problem was a fried connection on the curcuit board, I took lots of photos of it all wired up then u-wired it and resoldered the burnt connection path with solder and copper wire to make the path. If you suspect the board has a fried connection, sometimes you can see black as evidence on or around the board. Also check your 3 amp fuse sometimes they burn out. Also maybe check the limit switch, some videos I have seen say that it should have continuity at all times or its bad. So you might check continuity across it. However, this doesn't sound right as I would think it has to reach a certain temperature to activate, but I may be wrong. Hope you get er going

[@orange44number]

Oh I also forgot to mention, if your electric igniter is burnt out, you will have these same symptoms, so definitively check the igniter, if you have a furnace with electric ignition, it should come on within a min or two of flipping heat on and glow orange.

[@gregorywoloschek5241]

Thank your informative video, however, I do have a question. I have a thermostat that is sensitive to voltage. When I lose power, sometimes the thermostat works and sometimes it does not. I do have inverters generators as my backup power source. I do not need my furnace to provide me with heat during the winters, however I do need the fan to run to circulate the air/heat that my pellet stove puts out. My question is, if I hookup a switch to bypass my thermostat to just run the fan during the times I have to run my generators as my source of power, will that damage my thermostat if I have a bypass switch to turn on during these times to ensure the fan runs? Or must I disconnect my thermostat before I flip the bypass switch? Thanks!

[@ricardoguzmanoritz14]

Hello, It is posible to turn on your compressor AC from a Mini Split, using a thermostat when the furnace control board only have the letters W,R,+,B?

[@Gargoyle75-t8m]

Hello and thanks for the help! I need to bypass the 2 speed fan control with capillary on my ancient central air unit until the new switch arrives. Blue,black and red wires. Thank you

[@Laron18jet]

What's up Jay? Thanks so much for your videos. They helped so much in my troubleshooting skills.

[@WordofAdviceTV]

You're welcome! Thank you for watching :) Glad to hear they are helping with troubleshooting!

[@engelgesicht08]

My 3 amp thermal circuit breaker at the furnace blower keeps tripping. I checked the wiring carefully but did not see any visible wire break or shorted out. I had rusty capacitor at the condenser unit that I replaced. So I replaced the thermal breaker thinking that it’s bad. The fan ran for a bit then it started tripping again. I checked the voltage on the Y & G, and Y & R & I’ve got 27v but not between Y & C. The contactor switch when pushed, the outside ac unit runs fine. Then it tripped again. When I reset it I hear crackling somewhere by the vent tube coming out of the furnace. I saw a wire coming out of the zoning board to damper operator zoning switch. Could that be causing short circuit?

[@norvellwilliams8442]

hello love the video,s question i have a payne package unit that will not come on unless i pull the face of the thermostat off and then it only run for one cycle and dose not get to the thermostat setting. what do you think is the problem ?

[@712LifePersonal]

I had just installed a honeywell rth9585wf and I have a heat pump. The thermostat is set to 73. The room temperature display on the thermostat is at 73 but the fan kept running for hours. Outside temperature is 26 or 27 degrees. I've switched the fan from automatic to on and pulled the thermostat off the wall and the heat turned off in about a minute. Will this makes the thermostat faulty? Any advice or suggestions? Could it be the Outside temperature have something to something to do with it?

[@uptownphotography]

In the winter (about 4-5 months ago) my outside AC compressor was coming on when the furnace was on. I turned the AC circuit breaker off to turn the power off to the compressor as there was no other way to stop it from running w/the heater. (I figured I'd deal with it in the springtime. Now that it is getting hotter outside, I went to use the AC yesterday (turning the circuit breaker back on first) and neither the blower fan motor or compressor is coming on with the AC (will not work even in HOLD mode). If I switch the thermostat back to heater mode, the heater works fine. I did notice also, turning the fan switch on the thermostat will not turn the fan on, but again the fan works in Heat mode. Is this likely a thermostat problem (which I am guessing it could be)? Any ideas would be deeply appreciated. Also, I do have a voltage meter to test thermostat if I know the procedure. I would guess 24 volts from red and common. THX. The thermostat is a program-able Ritetemp model 8022C.

[@mrbreezeet1]

If my air conditioning is not kicking on and I want to check the thermostat do I just jump R over to Y or do I also need to tie in G to activate the fan? Or will jumping R To Y only, also energize the fan? This is for air conditioning now.

[@user-yk3vb2cq8x]

Thank you for your vids - super helpful and appreciated. I have a problem with no power to my thermostat but power at the board. Happened last night during a rain storm - probably unrelated but not sure why it would just stop working like that. The breaker is fine and the board is getting power. Thermostat connection reading 27 volts at the board. I also checked if the the water pump was working or if the float tripped anything but it appears fine. Any suggestions on what else I should look into? Regardless, thank you for these vids. Really helps to understand 👍

[@JohnDoe-er8pz]

Thanks for the good explanations and making clear the purpose of the various terminals and the wire color code..

[@craigstreit9478]

If you want cooling, do you need to jumper both the cooling and the fan? Or do you just need to jumper the cooling and the fan will be automatic? Thanks

[@johnmebrahtu9622]

Expert always nice I love all your videos Jay. Thank you so much.

[@shar731]

Question about colors of wire and the location on what letter the colored wire is placed. On my thermostat there is not a yellow wire. Only red, green & blue. Red on R Green on G Blue on Y No wire on W When I check with the wire red & green my fan does turn on. If I understand correctly that means it’s my thermostat front that needs replacing. I may have screwed up the compressor by checking (R) and blue (Y). Is it the letter location that matters? Or, did I wreck something by checking Y & R because Y has the blue wire? My air conditioner is controlled thru the thermostat. The Rc is the AC? If so how come there is not a colored wired attached? Ii know that G is my fan and it turns on. As shared I tried R & Y and nothing happened; I don’t know where to check the AC unit either only having 3 wires versus 4.

[@vatcheohanian2565]

Thank you so much for your videos and advice!