Thanks for this! Out of the ten videos I watched for a no c-wire system. Yours was by far, the most informative and entertaining install video. Thanks a lot. Now, I need to go to the dollar store to fix the extra hole in my wall! Or, I think I just may leave it, because I am the king of my castle!
Love the humor added. Very detailed and no chit-chat “filler talk”, right to the point and this video handled my problem exactly. We ordered the C adapter for our 2-wire boiler steam heat system (as designed in 1924 wiring). We won’t give up our steam heat (love it in winter) - for a furnace. Thanks for a great video and adding ha-ha points to it.
You saved the day. Like a few others I was ready to give up. The C wire behind my old thermostat was not connected and had no power anyway. I did not want to mess with the control board inside my air handler. So I used your string and nut method to run the wires from an external power supply through the wall. It worked perfectly. Thank you!
You are a lifesaver my guy, I have tried so many different ways to get my upgraded Wi-Fi thermostat to work, I had bought a transformer to get the C terminal to work and nothing, not even my boiler guy couldn't get it going , I was about to give up and go back to the old thermostat until I saw your video and you hit it right on the button when you said to take off the jumper wire and install the other wire 👍🏽 It fired up, lights came on and joy, happiness all over my face, 👍🏽👍🏽great job.
Dude this is like the best information video I think I’ve seen on UA-cam. Straight to the point and you don’t mess around by freaking love it you should have 1 million subs
I don't know how many times I've watched this video. Just updated my thermostat to one with Wifi, the company video was in no way helpful. I stumbled onto this and it is the most helpful video around....now I really am the King/Queen of my castle. Thank you so much!!!!!
Wow what a life saver I just bought a brand new smart WiFi thermostat to replace my old analog AC thermostat and I just found out my old analog Mercury thermostat don't have that Wire to C and this video is very helpful to explained what to do in this scenario. Great job for sharing it. 👍
This video saved us money. Looked at the wires in the wall and found a fifth wire. Thank you so much for mentioning that. All other videos did not say anything about it.
Thank you for this excellent video! One of the best how-tos I've viewed, because: 1. You get right to the point! 2. Your instructions are clear! 3. Great video supports your verbal instructions. 4. You know what the hell you're talking about! Still, I think I'm screwed! Going to check for extra wires when I get home tonight - I think I only have two: red + white. Hoping to find the C wire hiding inside the wall behind unit.
@@StatUpBox i only have two wire red and white and I already have the 24v transformer adapter connected my ecobee 3 is turned on but my furnace is not starting i don't know what else to do. ????? Help
Great video and very helpful. For those of you using a separate power source other than a "C" wire, make sure you're using a minimum of 24 Volt AC or 24 VAC power cord. I thought I was using the correct power cord until I realized it was only a 9 VAC but not before a total meltdown on my part.
Thank you this was the best video I saw on this topic. This is the exact thermostat I am installing. Your direction was clear and helpful. And you are the king of your castle 🏰 👑!
You're video helped me to replace my old mercury thermostat with new Honeywell WiFi Thermostat. In my case, I had 4 wires (W,G,R,Y they were not labeled as color) not C wire. As you mentioned, I looked in the drywall and found unused wires(blue,brown,black) but non of them worked as 'C' because those weren't connected to Furnace Power Supply. So, I connected one of the available color wire to the Furnace power supply board on 'C' socket and same color other End wire in the thermostat as in "C" (along with W,G,R,Y) in family room. Wallah ! it works... Thank You
Nicely done. No BS. And you have a soothing voice for instructional videos. Because I am king of my castle....just don't tell my wife i said that. Haha. Thanks
Thanks for an easy to follow (no extra bs) instructions. I did have 2 extra wires and put one into C and one into Rc without any luck and then switched them but unit still wouldn’t come on. Maybe I have to get the adapter anyway?
So this is the problem I'm having on my old thermostat I have the following wires connected G, Y, RC -jumper to RH, W. On the thermostat, but the I have the following wires that can be connected in this layout (below), I'm not sure which to connect to, even if I connect the old thermostat RC to R and use the adapter you mention it still does not work S A S O/B Y W2 Y2 E G W C K U R U RC
Great Video! Thanks! Your explanation was simple but also very helpful. A lot of other videos they edit out the actual work from the video, I don’t understand why they do that. I could tell by the quality of the video & audio in your video that i wasn’t going to have to watch anymore videos after this one. Good job. Thanks again. I also liked your “king of the castle” comments
Thank you for literally showing us what to do with the C and RC wire without the manual it’s almost impossible to find that answer if you’re not familiar on the subject.
Replacing and old thermostat that has only two wires: In our case the old thermostat had two wires (Red and White). I connected the Red wire to the R terminal on the thermostat and the white to the W thermostat terminal. I removed the jumper provide with the thermostat between R and RC. Our gas burning hot water heating system had a relatively new "ARM-2P Control with Priority" unit that has a connector for 24 VAC and Common. I ran a new wire from the heating system to the thermostat. It had a black and a white wires. I Connected the black to the 24 VAC on the ARM and to the C wire on the thermostat. The white wire is connected to the Common on the ARM and to the RC on the thermostat. All works great.
Your the man thanks , so I didn’t have the c wire so instead of using a external transformer, I went to the air handler and use the 2 entra wires in the back to connect to the air handler transformer and conect it to the c and rc and works well.
I have a garage ceiling mounted gas furnace/heater. I have a two wire honeywell thermostat. The current thermostat is just a switch to enable the furnace to fire up to the desired temperature. On my wifi honeywell Thermostat which connections would be used as switch just like the original. (have the C wire adapter as well). Great video..very informative Thanks
If you dont want to drill holes in your walls. You can plug in the 24v transformer to power near your furnace or (where the other end of your control wires are). Run the wires from your transformer to unused wires such as Black as common, and blue as Rc. Then go back upstairs to the thermostat and connect them accordingly.
But if you have an unused wire, just connect it to the Common terminal on the furnace control board, then obviously the other end to "C" at the t-stat.
True but the adapter is for those who dont have extra wires. If your stat happens to be close to the furnace like in most apartments then you can just run a new stat wire from transformer to the common. If it's far away then the adapter is a good fit.
@@tonyming6969 Yes, THIS is the correct information. If you DO have an "extra wire" going from the furnace to the thermostat, you don't need the transformer. The furnace can already supply the "common" connection. Just connect the "extra wire" to the "common" connection inside the furnace, and the same wire to the "common" connection on the new thermostat.
@@tonyming6969 Yes. And if you have the wire in your furnace and can not find the C terminal you may be able to just attach it to a screw that is attached to the metal case of the furnace.
Great video! I happen to have this exact model :) and am using the same C Wire Adapter. My manual confirmed the removal of the jumper. Everything fired up as expected, app worked great too. Thanks again!
Thank you very much. this was a simple and very understandable how too. I did run into a complication that you can help with. I installed the Honeywell unit you showed in the video. I will be using it to simply control a circulating pump on my heating system. The pump controls a snow melt system under a sidewalk. I chose this method to make it Wi-Fi. Accessible. So, this is a brand-new installation (no existing wires). I added the power adaptor that you recommended, and it is plugged in, has power at the outlet, and is hooked to the "R" and "Rc" but is not lighting up; it appears to be unpowered. Any suggestions? Thanks in advance. Barry
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!
Hey i had went to my furnace to move the G wiring to the C terminal but when i tried searching for it I could find it so they said if there no C terminal to connect it to the T terminal but i dont have that either
Thanks a lot for this video. It was really helpfull. Just one question: Can I install 2 thermostats and select from my device which one to work? Thanks in advance.
I have the one red cable for the R. I am not sure in which to insert, whether the R or RH. I am not connecting the C wire. The way I have ai have it connected currently is the red cable in the RH with the jumper connected and no C wire connected. Is that correct?
Just a heads up, when using a "wall wart" external power supply for the C wire with one of the newer touch screen Honeywell WiFi thermostats I had to keep the jumper in place between R and Rc even with the Red wire connected to R and one of the wall warts wires connected to Rc. With the jumper removed the stat acted like it was doing its job but nothing was getting activated on the AC/Heat unit. Added the jumper and everything came to life...
Thank you so much! I was wondering about that. I was having that issue and I wasn’t sure if I should keep that jumper there. But as soon as I put it back it came to life. You’re a life saver!
thanks for the video, I have the L8148E, and I want to change my thermostat for the RTH6580WF. I only use the heat and my old thermostat works with two wires. where you should connect the wires for the other thermostat. Thanks
I have a 4 wire setup. There's a small red wire going from the RH to the RC. Then there's a separate RC wire from the wall. Will I need to duplicate the RH to RC bridge on the new thermostat?
I have no C so I got a C wire adapter and followed this guide and it works for heat but not cooling. The Honeywell support tried to tell me that adding a C wire adapter works for heat-only systems, but not for heat & cooling systems. That doesn't make any sense to me, because if I bridge R and Y my AC turns on just fine. Is Honeywell support right? Or is my Thermostat just defective?
@@AlbertoGarcia-sh6rf Honeywell's support said I have to connect the adapter that came with the thermostat to the unit in my attic but I haven't tried it yet.
Honeywell told me the C wire adapter would work on RTH9585WF. When I installed it I also found out it only works on heat and NOT A/C. Now I have to take everthing apart and return it. Has anyone found a solution?
“My green wire is connected to G a blue wire to Y a cream wire connected to W and a red wire to R with a jumper to RC.My spare wire is yellow is this d C wire? I am starting to get the feeling that the blue wire connected to the Y is the actual C wire and that the thermostat was just connected wrong. Would this be correct? Everything has always seemed to work fine. I live in old apartments but use alexa and I really want to get a amazon thermostat.
I must be missing something I only have two wires coming from the Propane wall heater, others mentioned 2 wire that you tell how to do that but I’m missing it.
I have the 24AC adapter do I leave the jumper in even tho the adapter 1 end is hooked up to c and the other end is hooked to rc jumper is between r and rc
Thanks so much for the video. But I have a question. My old thermostat had 4 wire like in the video and I bought a new wifi Bosch thermostat and is requiring a C wire. If I put the ac adapter like you showed in the video, the ac adapter have 2 wires, which one will be connected to the C plug and the other wire where is going to be? Can you help me on that. Will appreciate that
This isn't the Honeywell c wire adapter. It's a 24 volt power adapter. Their website has a completely different item called the C-wire adapter that gets installed at the HVAC control panel that doesn't get plugged into a wall outlet.
Can you still use the wifi feature of the thermostat even if you only connect it with 2 wires: red/black or white/black ones? In only have 2 wires in my set up
Question. Mine is without c wire. I got only. 2 wires, W and R . Can I jump the power from W to C terminal. Cause what I am thinking is, W is bringing the power in and R is bringing out, and C terminal is for power up the thermostat, so why not get the power from W.
My old thermostat has 2 wires at R and W. No C wire. However, there are 2 more wires that goes all the way to furnace but these not connected to anything. Should I use these for CWire?
How do you cover that hole in the wall? Mention that there are alternatives that require wiring at heating unit that are neater, if more complex, than this method. Thanks!
my old thermostat didnt use the C wire as it used batteries....but it was in the wall behind the plate when i went to install this new one..so i thought it would be easy...but even with the C wire included in with the R,YGN, thermostat wouldnt work..can the C wire not be connnected in the furnace wiring for some reason?
I installed my RTF9585WTF thermostat a few years back along with the adapter for "C" wire. It has worked fine all these years. But now the screen has gone blank. I think it may be adapter that is issue. How can I check to see if adapter is OK?
Hi thank you for the video. I have a problem I canot choose Em heat for my thermostat. Just Cool and heat. I have a Thermopump and use electricity in the winter when is too cold. With my old thermostat I can choose it. I try many option. Thank you to help me.
Thanks for this! Out of the ten videos I watched for a no c-wire system. Yours was by far, the most informative and entertaining install video. Thanks a lot. Now, I need to go to the dollar store to fix the extra hole in my wall! Or, I think I just may leave it, because I am the king of my castle!
You're very welcome!
Gotta agree with Fierofreak01, this was by far the most clarifying video on this. Thank you so much!
"King of my castle" is the line of the day!
"At the end of the day, you're the king of your castle." Love it!
Thanks for the informative video.
Love the humor added. Very detailed and no chit-chat “filler talk”, right to the point and this video handled my problem exactly. We ordered the C adapter for our 2-wire boiler steam heat system (as designed in 1924 wiring). We won’t give up our steam heat (love it in winter) - for a furnace. Thanks for a great video and adding ha-ha points to it.
You saved the day. Like a few others I was ready to give up. The C wire behind my old thermostat was not connected and had no power anyway. I did not want to mess with the control board inside my air handler. So I used your string and nut method to run the wires from an external power supply through the wall. It worked perfectly. Thank you!
This provides accurate, clear and precise info. (I value videos that are edited for brevity and clean, uncluttered screen shots.)
This is one of the best videos for this thermostat installation! clear, to the point , easy to follow. Thank you
You are a lifesaver my guy, I have tried so many different ways to get my upgraded Wi-Fi thermostat to work, I had bought a transformer to get the C terminal to work and nothing, not even my boiler guy couldn't get it going , I was about to give up and go back to the old thermostat until I saw your video and you hit it right on the button when you said to take off the jumper wire and install the other wire 👍🏽 It fired up, lights came on and joy, happiness all over my face, 👍🏽👍🏽great job.
Dude this is like the best information video I think I’ve seen on UA-cam. Straight to the point and you don’t mess around by freaking love it you should have 1 million subs
I don't know how many times I've watched this video. Just updated my thermostat to one with Wifi, the company video was in no way helpful. I stumbled onto this and it is the most helpful video around....now I really am the King/Queen of my castle. Thank you so much!!!!!
Wow what a life saver I just bought a brand new smart WiFi thermostat to replace my old analog AC thermostat and I just found out my old analog Mercury thermostat don't have that Wire to C and this video is very helpful to explained what to do in this scenario. Great job for sharing it. 👍
This video saved us money. Looked at the wires in the wall and found a fifth wire. Thank you so much for mentioning that. All other videos did not say anything about it.
Great to hear!
Thanks for the reminder about who's the king around here!
Thank you for this excellent video! One of the best how-tos I've viewed, because:
1. You get right to the point!
2. Your instructions are clear!
3. Great video supports your verbal instructions.
4. You know what the hell you're talking about!
Still, I think I'm screwed! Going to check for extra wires when I get home tonight - I think I only have two: red + white. Hoping to find the C wire hiding inside the wall behind unit.
Thanks . Good luck.
@@StatUpBox i only have two wire red and white and I already have the 24v transformer adapter connected my ecobee 3 is turned on but my furnace is not starting i don't know what else to do. ????? Help
Great video and very helpful. For those of you using a separate power source other than a "C" wire, make sure you're using a minimum of 24 Volt AC or 24 VAC power cord. I thought I was using the correct power cord until I realized it was only a 9 VAC but not before a total meltdown on my part.
Thank you this was the best video I saw on this topic. This is the exact thermostat I am installing. Your direction was clear and helpful. And you are the king of your castle 🏰 👑!
You're video helped me to replace my old mercury thermostat with new Honeywell WiFi Thermostat. In my case, I had 4 wires (W,G,R,Y they were not labeled as color) not C wire. As you mentioned, I looked in the drywall and found unused wires(blue,brown,black) but non of them worked as 'C' because those weren't connected to Furnace Power Supply.
So, I connected one of the available color wire to the Furnace power supply board on 'C' socket and same color other End wire in the thermostat as in "C" (along with W,G,R,Y) in family room.
Wallah ! it works... Thank You
n narr I did the same thing. Unit got power but the heat won’t work. Does nothing. Not sure why
"Voila!"....it's French ;)
Nicely done. No BS. And you have a soothing voice for instructional videos. Because I am king of my castle....just don't tell my wife i said that. Haha. Thanks
Thanks for an easy to follow (no extra bs) instructions. I did have 2 extra wires and put one into C and one into Rc without any luck and then switched them but unit still wouldn’t come on. Maybe I have to get the adapter anyway?
Nicely done! I especially enjoyed the tip about using a nut and magnet to feed wiring though walls. I’m kicking myself for not thinking of that!
Glad it was helpful!😊❤👍
This guy's sense of humor was great! Thanks for the laugh and education.
+Nick Abernathy lol.thanks
Nick Abernathy at the end of the day, you’re the king of your castle!
I agree. Made it very enjoyable.
This is the video I desperately needed. Thank you so much for explaining it so clearly.
Thanks for explaining this so well, I will be adding my upgraded thermostat to my castle today
So this is the problem I'm having on my old thermostat I have the following wires connected G, Y, RC -jumper to RH, W. On the thermostat, but the I have the following wires that can be connected in this layout (below), I'm not sure which to connect to, even if I connect the old thermostat RC to R and use the adapter you mention it still does not work
S A
S O/B
Y W2
Y2 E
G W
C K
U R
U RC
“Now that you have a hole in your wall that wasn’t there before” haha!
Oh man, this guy is fuckin awesome!
Great job makes senses easy to understand
THANK YOU
I love this video, you are really good at explaining.
So your little tip of blue wire being pushed back was so helpful!! We looked again and found it! Easier setup now.
Your blue was your c wire?
Thank you bro. Watched before installing mine. Didn’t know it would be so easy and your humor is great.
Great Video! Thanks! Your explanation was simple but also very helpful. A lot of other videos they edit out the actual work from the video, I don’t understand why they do that. I could tell by the quality of the video & audio in your video that i wasn’t going to have to watch anymore videos after this one. Good job. Thanks again. I also liked your “king of the castle” comments
Fantastic video. Easy to follow. Thanks, King StatUpBox.
Best step by step and very well explained video on both the adapter and the thermostat thank you
You saved me!!!!! I tried this and it worked great! Thanks you so much!!
Thank you for literally showing us what to do with the C and RC wire without the manual it’s almost impossible to find that answer if you’re not familiar on the subject.
Replacing and old thermostat that has only two wires:
In our case the old thermostat had two wires (Red and White). I connected the Red wire to the R terminal on the thermostat and the white to the W thermostat terminal.
I removed the jumper provide with the thermostat between R and RC.
Our gas burning hot water heating system had a relatively new "ARM-2P Control with Priority" unit that has a connector for 24 VAC and Common. I ran a new wire from the heating system to the thermostat. It had a black and a white wires. I Connected the black to the 24 VAC on the ARM and to the C wire on the thermostat. The white wire is connected to the Common on the ARM and to the RC on the thermostat.
All works great.
Can you make the WiFi feature work without the C wire?
@@Airbunnie11 no the point of the c wire is to power the whole thermostat
I ran a C wire from the VAC, then just jumped a wire from W to RC and it worked, thanks!
Vert neat and helpful! Thank you! I had no idea those AC adapters for the additional wires existed.
Your the man thanks , so I didn’t have the c wire so instead of using a external transformer, I went to the air handler and use the 2 entra wires in the back to connect to the air handler transformer and conect it to the c and rc and works well.
I loved the “you are the king of your castle”
Maaaaan TY a lot! Made the purchase fast and thanks again!!!!!
Excellent detailed video. well done!
Thank you kindly!
I have a garage ceiling mounted gas furnace/heater. I have a two wire honeywell thermostat. The current thermostat is just a switch to enable the furnace to fire up to the desired temperature. On my wifi honeywell Thermostat which connections would be used as switch just like the original. (have the C wire adapter as well).
Great video..very informative Thanks
This is great, appreciate you putting this up
You saved my ass! I found the C wire hidden in the wall under electrical tape. I though I just spent $200 for nothing, thanks. 🙏
Good and full information 👍🏻👍🏻👍🏻👍🏻
Very well explained short video I ever seen,,, Thanks
Thanks
Gracias amigo! I have this exact setup
how did you determine which of the unused wires was the C Wire?
If you dont want to drill holes in your walls. You can plug in the 24v transformer to power near your furnace or (where the other end of your control wires are). Run the wires from your transformer to unused wires such as Black as common, and blue as Rc. Then go back upstairs to the thermostat and connect them accordingly.
Does anyone know where I could find more detailed info on how to do this?
But if you have an unused wire, just connect it to the Common terminal on the furnace control board, then obviously the other end to "C" at the t-stat.
True but the adapter is for those who dont have extra wires. If your stat happens to be close to the furnace like in most apartments then you can just run a new stat wire from transformer to the common. If it's far away then the adapter is a good fit.
@@tonyming6969 Yes, THIS is the correct information. If you DO have an "extra wire" going from the furnace to the thermostat, you don't need the transformer. The furnace can already supply the "common" connection. Just connect the "extra wire" to the "common" connection inside the furnace, and the same wire to the "common" connection on the new thermostat.
@@tonyming6969 Yes. And if you have the wire in your furnace and can not find the C terminal you may be able to just attach it to a screw that is attached to the metal case of the furnace.
Excellent work and explanations.
Thank you
Fantastic instructional video. Well done!
Awesome thanks a shit ton buddy! Was about to return my thermostat I just ordered the c wire adapter didn't realize they sold these things.
hi it is verey good explanation better than haonywall
Thank you so much this video is exactly what I needed the adapter worked perfect for me.
Very informative and a little bit funny. Thank you for posting.
Ok once you have the extra wire hooked up to the C wire. I’m guessing you hook it up in the furnace also
Yes
Best Video Ever!!!
Great video! I happen to have this exact model :) and am using the same C Wire Adapter. My manual confirmed the removal of the jumper. Everything fired up as expected, app worked great too. Thanks again!
SUPER helpful video. Thanks!!
Thank you very much. this was a simple and very understandable how too. I did run into a complication that you can help with. I installed the Honeywell unit you showed in the video. I will be using it to simply control a circulating pump on my heating system. The pump controls a snow melt system under a sidewalk. I chose this method to make it Wi-Fi. Accessible. So, this is a brand-new installation (no existing wires). I added the power adaptor that you recommended, and it is plugged in, has power at the outlet, and is hooked to the "R" and "Rc" but is not lighting up; it appears to be unpowered. Any suggestions? Thanks in advance. Barry
Good Video thanks
You're welcome💪😊👍❤
Very good presentation - thanks! 👍
Nice video
Great video, Thanks!
Thank you. I don’t have a C wire so that was the problem.
Hi, can i just use one c wire adapter to multiple smart thermostats , one for each floor in the house?
Thanks for the video.
You bet
I laughed during this, thank u for making it with humor!!!!
Grate job ,I got it thank u so much.
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!
How do you know which breaker gives electricity to the thermostat?
Hey i had went to my furnace to move the G wiring to the C terminal but when i tried searching for it I could find it so they said if there no C terminal to connect it to the T terminal but i dont have that either
When you pick an unused wire that now becomes your C wire, where do you connect it on the HVAC system end?
Thanks a lot for this video. It was really helpfull.
Just one question:
Can I install 2 thermostats and select from my device which one to work?
Thanks in advance.
Is HC wire the same as just a C wire?
Since you have several addition extra wires how do you determine which was the C wire.
I was reading the comments to see if someone had an answer for that! :/
Informative, definitely a video to watch
I have the one red cable for the R. I am not sure in which to insert, whether the R or RH. I am not connecting the C wire. The way I have ai have it connected currently is the red cable in the RH with the jumper connected and no C wire connected. Is that correct?
Just a heads up, when using a "wall wart" external power supply for the C wire with one of the newer touch screen Honeywell WiFi thermostats I had to keep the jumper in place between R and Rc even with the Red wire connected to R and one of the wall warts wires connected to Rc. With the jumper removed the stat acted like it was doing its job but nothing was getting activated on the AC/Heat unit. Added the jumper and everything came to life...
Thank you so much! I was wondering about that. I was having that issue and I wasn’t sure if I should keep that jumper there. But as soon as I put it back it came to life. You’re a life saver!
thanks for the video, I have the L8148E, and I want to change my thermostat for the RTH6580WF. I only use the heat and my old thermostat works with two wires. where you should connect the wires for the other thermostat. Thanks
I have a 4 wire setup. There's a small red wire going from the RH to the RC. Then there's a separate RC wire from the wall. Will I need to duplicate the RH to RC bridge on the new thermostat?
What if you only have 3 wires. I only have heat. Does it still works?
Thank you this helped me 👍
Hey Honeywell, you should hire this guy, because your videos and manuals don't even come close to being as helpful!
I have no C so I got a C wire adapter and followed this guide and it works for heat but not cooling. The Honeywell support tried to tell me that adding a C wire adapter works for heat-only systems, but not for heat & cooling systems. That doesn't make any sense to me, because if I bridge R and Y my AC turns on just fine. Is Honeywell support right? Or is my Thermostat just defective?
I'm having the same issue. Did you find a solution?
@@lakundrashepherd1366 I'm having the same issue did u figure yours out?
@@AlbertoGarcia-sh6rf Honeywell's support said I have to connect the adapter that came with the thermostat to the unit in my attic but I haven't tried it yet.
Honeywell told me the C wire adapter would work on RTH9585WF. When I installed it I also found out it only works on heat and NOT A/C. Now I have to take everthing apart and return it. Has anyone found a solution?
Thanks
Welcome👍❤
hello, how did you know the black wire was the C wire?
Will this apply to the scenario where I have only 2 wires : red and white?
Great video Bro! You also saved me too! 👍🏻
“My green wire is connected to G a blue wire to Y a cream wire connected to W and a red wire to R with a jumper to RC.My spare wire is yellow is this d C wire? I am starting to get the feeling that the blue wire connected to the Y is the actual C wire and that the thermostat was just connected wrong. Would this be correct? Everything has always seemed to work fine. I live in old apartments but use alexa and I really want to get a amazon thermostat.
ive got a blue instead of a yellow, it is ran to Y on the current thermostat....but when I put a new thermostat in it wont kick on the AC. any ideas?
I must be missing something I only have two wires coming from the Propane wall heater, others mentioned 2 wire that you tell how to do that but I’m missing it.
I have the 24AC adapter do I leave the jumper in even tho the adapter 1 end is hooked up to c and the other end is hooked to rc jumper is between r and rc
Thanks so much for the video. But I have a question. My old thermostat had 4 wire like in the video and I bought a new wifi Bosch thermostat and is requiring a C wire. If I put the ac adapter like you showed in the video, the ac adapter have 2 wires, which one will be connected to the C plug and the other wire where is going to be? Can you help me on that. Will appreciate that
Read your manuels ....mine expressly states not to terminate the C wire ( the brown
This isn't the Honeywell c wire adapter. It's a 24 volt power adapter. Their website has a completely different item called the C-wire adapter that gets installed at the HVAC control panel that doesn't get plugged into a wall outlet.
Can you still use the wifi feature of the thermostat even if you only connect it with 2 wires: red/black or white/black ones? In only have 2 wires in my set up
Question. Mine is without c wire. I got only. 2 wires, W and R . Can I jump the power from W to C terminal.
Cause what I am thinking is, W is bringing the power in and R is bringing out, and C terminal is for power up the thermostat, so why not get the power from W.
My old thermostat has 2 wires at R and W. No C wire. However, there are 2 more wires that goes all the way to furnace but these not connected to anything. Should I use these for CWire?
How do you cover that hole in the wall? Mention that there are alternatives that require wiring at heating unit that are neater, if more complex, than this method. Thanks!
my old thermostat didnt use the C wire as it used batteries....but it was in the wall behind the plate when i went to install this new one..so i thought it would be easy...but even with the C wire included in with the R,YGN, thermostat wouldnt work..can the C wire not be connnected in the furnace wiring for some reason?
I installed my RTF9585WTF thermostat a few years back along with the adapter for "C" wire. It has worked fine all these years. But now the screen has gone blank. I think it may be adapter that is issue. How can I check to see if adapter is OK?
Hi thank you for the video. I have a problem I canot choose Em heat for my thermostat. Just Cool and heat. I have a Thermopump and use electricity in the winter when is too cold. With my old thermostat I can choose it. I try many option. Thank you to help me.