82°! As soon as you said that my father raised up out of his grave screaming , "who touched the thermostat, I told you not to touch the thermostat, what're we rich all of a sudden now!?", reset the thermostat down to 67° & stumbled back to the graveyard mumbling about " kids these days"!

My son and I used this to troubleshoot my wireless thermostat, I saved hundreds of dollars thank you!!!

Thank you for the GREAT INFO! i just paid $110 to an hvac guy who said your thermostat doesn't work. He did nothing to fix it. I jumped on YT saw your explanation about the batteries and the C port, put in new batteries and fixed the problem! I wish I had seen your video 1 day before. Thank you!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Omgosh it worked. My ac turned back on. I now know it’s the cover and not the unit. It still just gives me the inside temp and not the setting temp. I was a little worried it now won’t turn off. I don’t want it constantly running. But it did shut off at 76*. I can do that till my new cover comes. 😊 Thank you! Your channel was the only one I found that really helped me out.

Thanks so much! I used a paper clip wrapped in electrical tape as you suggested and determined that my HVAC system works fine and the thermostat is dead. I'll replace the thermostat myself. You saved me an expensive service trip!

Thank you so much! You turned a miserable day of troubleshooting into a quick fix! Thanks again!

This was so helpful in revealing that our thermostat was indeed working right. We ended up after a couple videos like this saving a lot of $$$ on a big costly repair by having a better idea what was wrong with our HVAC. It ended up being a blower motor. We are very grateful. Still a big repair but saved a ton. Thank you.

you are the only video I found so far that mentioned that the front of the thermostat may just be bad. I have a blank front case but power comes through back plate.

I have that same thermostat Honeywell and my unit was not getting cold barely blowing , I looked up videos and found u first, I listen than I changed my batteries 🪫 now my house is cooling good. Thanks 🙏🏾

This video was the absolute BEST! if it was my thermostat that was causing my a/c to not work, Id be very bummed paying some electrician couple hundred dollars to change my thermostat. This video provided all the info I needed. Brilliant suggesting just trying the fan cause I have one of those programmable units that takes a degree to figure whether the problem is the unit or my inability to get the "wake, daytime, night, start, finish, Mon-Sun" all or even partially correct. Noting 24 volt shock is nothing helped, so you do not have to figure where the hell on your fuse box is the thermostat breaker. The paperclip tool is ingenious, and lastly suggesting buying the same unit (I didn't want the program nonsense), but to skip all the rewiring was a tip I couldn't turn down. THX!!!

Thank you much. Cant believe this worked. I had just recently gotten my AC replaced. With a one year old used one and kept the same 1855 thermostat in my old house. I took off the cover and it did not work. Went to panel on the unit and tried again. This time it worked. So after looking around a bit more I looked into my drain line since they installed a overflow kill switch. My drain outside had gotten clogged up. Unclogged it and turned on right away. Thank you for this video.👍👍👍👍👍👍👍👍

Thank you for the video, we bypassed troubleshooting and just changed thermostat and AC started working !!!

75 thumbs down came from the electricians loosing money because of this awesome video!

Outstanding -- solved my problem in the first 10 seconds. The rest of the video was very informative and invaluable. Thank You, Kudos to you!!!

Thank you very much for teaching us to know if it is the thermostat that is bad or if it is another problem with the system.

A really great video that made a potentially complicated problem very easy to resolve! Thanks

ordered a new thermostat today bc of this video, thank you my man

Thank you, this is SO helpful! Just had our furnace serviced twice in four months and now I think it's a bad thermostat. Also, love the Swedish accent!!! 💜

My suspicions were correct and your quick test confirmed it. Thank you.

My thermostat, does not turn off the system at all. It was on for few hours, I turn the fan from auto to on and if finally stopped blowing cold air. Everything that you say was very helpful. Thank you.

Another very well done video. I now know so much more about that thermostat. Thank you. Thumbs up!

Thank you! This video helped me figure out the problem and fix it in minutes.

Very helpful. You make it easy to understand

I am very happy that I found the problem and solved it thanks to your video!

Omg thank you for ur video!!!! Saved me a lot of trouble!!!! 🙏🏽🙏🏽🙏🏽

The fan comes on but the rest of the thermostat will not work. We replaced the thermostat and used wire strippers to expose a fresh set of wires. Even with the new thermostat, the fan comes on but the rest of the thermostat will not work. Do you know what the issue could be? Thanks for sharing!

Thanks‼️used the jumper wire replaced the thermostat back in business

I really appreciate For the video, saved me a lot of money, god bless you.

This worked, wire to R and G and the fan turned on. Bad thermostat. Going to buy a new one. Thank you!

Fantastic! Thanks 😁. And I love your voice 💜

thanks so much, now I have to replace my thermostat :). Subscribed!

thank you for making and sharing this video! it's extremely helpful!

Thank you very much for your video. For the cooling setting, my ac system keeps running and cannot be turned-off. What cause these problem?

I definitely agree these are safe ways of testing a thermostat but honestly I would change batteries 1st if no change then I'd buy a cheap $15 dollar thermostat and see if it makes a difference because having a back up never hurts. But all this does is remove the thermostat from being a problem most of the time it's a broken or loose wire, blown fuse, or another cheap easy to fix part the expensive part of heating and cooling always comes down to labor cost and usually doubled hourly rate for emergency calls

Now that was good. I'd never do it, but it was good!

@YourSelf I have experienced some Honeywell thermostats which partially works and doesn't! Some will work only in the cooling section know as the RC. RC will make contact with both G (Fan) and Y (compressor) not in the heat mode between R & W for heat Or Vice versa!

You're amazing Life saver Thank you ❤️ 👍👍👍

Very well done video. Thank you

Nice explanation! Thanks

Thanks for sharing that tip! . Bad at trouble shooting skills on my side

But what happens after clicking hold and everything looks fine but it decides to go back. Like I want mine to be at 70 and I do as you instruct but after a few seconds, it goes back to 84. And it keeps climbing up. Help?

What does it mean if the "set to" temp and "heat on" is crazily blinking? It doesn't do that when it's over on cool..? It's a weird blinking and the "set to" temp is also blinking the temp up and down by a degree or two. It does take batteries, but there were no batteries when we bought the home a year and half ago. It's hardwired. Can you help? Is it the thermostat or something else? Thank you!

What a blessing... this video!

Great video. Question: I put in fresh batteries. But the heat furnace does not go on when Thermostat is on "Auto" and I up the temp above room temp. But when I put Thermostat on 'Manual Fan", the fan turns on. But it only circulates air, not heated air. Do you think it's my Thermostat or the furnace?

Thank you for your video. You have mention about C terminal and batteries. Question 1: Without batteries, I wouldn't able to see the temperature numbers. Is it a good idea for everyone? Question 2: With the batteries and C terminal, can I have both of these items?

Mr. YourSelf: Thank you very much for your great videos! can you please make short video on outdoor unit short cycles reasons?. Thanks

I have a Honeywell RLV430 for an electric baseboard heater in my bathroom. It says 32 deg but backwards on the screen. Doesn’t take batteries, tried everything but it just won’t come on. Starting to think my thermostat is bad. Any suggestions. Also will not reset

Thanks for your help. I have a single pole thermostat going to wall heater. I have replaced the thermostat two weeks ago and now it will not operate the heater. If I remove thermostat and cross wires the furnace kicks on so nothing wrong with furnace. This is the second time I've replaced the thermostat in 2 years. Do you know what I'm doig wrong? Thanks in advance.

This helped me a lot. Thank you

Thank you for sharing vid, I did just that changed batteries. But what is strange heats on all day and turns down at night. Question, on the back shows Electric or Heat Pump....or Gas or Oil? Mine is in Gas

Best video ever.

This was very helpful

I think I missed something. I have an upstairs thermostat that doesn't work but my downstairs works fine. I tried the steps and nothing is happening. I need help 😫

When I press the arrow, nothing happens anymore. Only when I hit "set" I can change temps. Also it's ignoring any set temps and is cooling for hours without stopping.

Thank u so much!

Great Job,but I changed the battery of thermostat but it still blank no works.

Thanks for the great video! Question for u. Our thermostat Keeps turning the fan on and off as we usually keep it on auto. The furnace downstairs seems to be working as we are able to turn the heat on/off however the fan keeps turning on then a few mins later back off. We put new batteries that doesn't seem to be the issue. We removed the thermostat off the wall completely and it is still clicking itself on and off. Is that a thermostat issue or a wire issue?

We have the same Honeywell thermostat, ours only show inside temp, nothing else and it doesn't respond to any button presses anymore. We checked the breaker but that's not the issue.

If it says Honeywell on it, it’s bad.

Is it safe switching to on.

thank you man!!

Great explanation

I have one wire going to rc and no c wire connected. How do i proceed instead. My issue is it kept turning back on with or without the face of thermostat without staying off.

Thanks man! This worked for me

Our furnace wasn’t coming on. Thermostat had no led readings on it, pulled the cover off and replaced aaa batteries. Still no led readings so removed batteries and they were very hot! Not sure if thermostat needs to be replaced, any thoughts?

Thanks

I have a green wire in W and a red wire in Rc... I've had an electrician come out and fix it but its usually stopped working after about a week.

Thanks, so helpful.

I have almost the same thermostat just not programmable. The temp reads 76 when off. If I turn on and set lower than temp reading it will shoot up to 81 degrees even while blowing cool air. The light on the thermostat will also flash on several times while running, not cycling on and off. Please advise.

Very good video

When I turn on cold the inside temp appears on left side of thermostat and nothing happens. I turn on heat and heat works. Why no cold?

I have a white and black wire thst came off my thermostat and none of them is connected to C. I have a pro 1 t-701. Could you please help?

Good video helped me troubleshoot down to what the cause of my problem was. It was a 15 amp fuse on my furnace on and off switch it was blown.

Thank you.

My problem is my thermostat is directly across from my inside unit I also have the outside AC fan but the problem is when I plug in the unit across from the thermostat it stays on whether or not I flip switches off on the thermostat how do I fix that

You're the best thanks.

Excellent!!! Thanks!🙏👍

thank you nice and easy

Hello. My A/C works fine, however, when the set temperature is reached, the compressor and fan don't turn off together. Only the compressor turns off, and the fan blows continuously, and I have it set to AUTO. When the temperature goes back up again, the compressor turns on. But fan is running 24/7. Could this be a thermostat to relay issue?

My thermostat is blowing out heat , instead of cool air ... yes I put it on cool , auto or cool ,on .. I need help

Mine was the clicking noise from the reverse valve. Honeywell is doesn't like colmens hvac.

I have the same problem thank you very much

Thanks. Help me alot..

How do I change from Celsius to Fahrenheit it’s stuck idk how to go back

Wonderful QUIET !

Thanks a ton!

Mine is blowing. Air just isnt getting hot. Cold as hell in this house. The pilot is lit and filter is changed. Played with the breaker, reset the thermostats. What could it be?!

Saved me. Thanks

Our thermostat was acting up, furnace would turn on sometime. First tech wanted to sell us a new heater. 2nd company that call was honest. First he check the heater in the garage then checked the thermostat n diagnose a bad thermostat. $240 bill, money well spent

Will the paperclip trick work even if my thermostat screen isn't working even with new batteries

Mine I set it up to a temperature say 73 Once it's reached the temperature instead of stopping it blows cold air. What can it be

Great Video

Hello where can i fine that exact thermostat please

I have an issue where my cooling tower constantly runs. A service tech said it could be the thermostat, but did not sound certain. What would your thoughts be?

So I have the exact same unit and I set mine to 77, my air has been running for 40min now and it’s been 77 almost the whole time and it won’t shut off

If we have the same issue as this video what can be the problem. I replaced the thermostat and still nothing turns on. I tried junping it from the thermostat and nothing. Not getting 24v to thermostat. I jump it from the main board and it works fine only.

I tried everything you said, and still no heat. But, then again, I haven't paid the gas bill in months.

what about when I turn to auto, there is no air. when I turned it to on and Cool, there is air but the air is not Cool, it's just fan air. what is the problem here?

Good stuff

or u may have a thermostat that stopped working, u change batteries (that u changed last month), but it wouldn't let u select temp. When u messed with it and it finally did, u put it back in place set on 50, selected heat and auto and WOW the thermostat lit up and rolled thru the #s quickly til it hit 90 degrees. Finally stopped but I stupidly put it back in place & went to bed, woke up in a pool of sweat and yep furnace running wide open at 90 - so much for hibernating in a room for 2 months with a space heater to keep my bill down. Never seen a thermostat so screwed up but never used honeywells - they're CRAP