I have the same old wiring setup, I am setting up mine and was wondering you have a r to rc red jumper. What do you do with the jumper on the new plate? The instruction say if you have a r and rc jumped to remove the jumper on the new plate, I see you didn't do that. Am I missing something? Thanks....
It's fine to jump R(h) and Rc if: (a) your heating and cooling are controlled by the same control panel (such as from the air handler on your A/C or furnace) OR (b) you have separate heating and cooling control panels (e.g., A/C + gas boiler), but you don't care that the thermostatic input power comes from only one of them (and, therefore, that turning off that system shuts off thermostatic control for both systems). Odds are good that you're in condition (a), above. If you're in condition (b), I'd suggest running a separate R for each and not jumping Rh-Rc. That way, as long as either system is powered, your thermostat is powered. I'm not an HVAC tech, though.
As is the board already jumps R and RC together...it's that little wire loop under the R terminals. If you have a separate wire for each you plug those into R and RC and then remove the little loop jumper.
Have a question two of the pins what hold the wires in place broke off because I pushed it to hard so my question is will that stop my ac from blowing cold ???
Thank you for doing this video. It made my installation so much quicker and easier. I really appreciate the time you took to make this video available. Thanks again.
It depends on whether the furnace feeds power on the thermostatic cable. This would usually be indicated by a wire from a furnace control panel connecting to the "Rh" terminal on a thermostat. The best way to tell is to check the thermostatic cable for voltage before messing with it. If you read voltage or an NCV beeps, you haven't cut all the power to it.
Very informative video, thank you so much ❤ if you could add something, on initial setup, explain 2 stage cooling. I had extra brown wire which I found out must be connected to Y2 in Honeywell thermostat. Not everyone has 5 wires. 🙏
So I have a common wire that’s not being used right now on my current thermostat. Do I just connect it on both ends on the C terminal to get this thermostat to work?
Just bought this thermostat, its only for heat and i dont have a C wire. I bought a external transformer that plugs into an outlet that i was told will work. My question is the transformer wires will go into the C terminal and which other?
I have an extra green wire which was connected to the O/B terminal. Where do I connect that “extra wire” on the Honeywell thermostat? This unit is an old carrier located in Florida. (Is a heat pump system)
@@LuckyChuckle I did and I was able to turn it on and it was cooling fine, but I was not able to lower or raise the temperature. I have a HVAC coming tomorrow.
I installed mine and it's working perfectly. My questions are: is the "Differential" setting the difference between what the actual room temp is compared to what the stat is reading or, an offset temp where it has to drop that differential setting before activating the furnace? Also, is there no backup battery if we lose power or does being connected to the net mean we we don't need it?
@wbforsure2104 : The purpose of a back-up battery is to retain the settings and ensure that the system continues to operate as programmed when power is restored.
@@ncooty ...So are you saying anytime there's a power outage all thermostat settings are lost and have to be reprogrammed for this Honeywell thermostat ?
@harryberry474 I'm unsure if that's the case with this particular thermostat; sorry. Some have small internal batteries, whereas others store and access settings via an app (versus in the wall unit). (On older-style thermostats, the settings were mechanical, so it wasn't an issue.) I should also have mentioned that some units use replaceable batteries to power the unit itself without a c wire (common) or parasitic draw.
@@ncooty ...Yeah my cruuent thermostat has battery back up no "C" wire connected but my new Honeywell RTH9585WF doesn't have batteries but does have 3 small capacitors unsure if they are for back-up or something else. I do have the "C" wire wrapped around the wire bundle inside the wall I'm good to go just have to check if it's connected at the HVAC control panel inside the heater. Right now I'm just researching info as much as I can before doing the change. Even if it doesn't auto back-up it's a minor inconvenience .
All of this and still don’t know what the power is for the common wire, I’m assuming it’s 24 v, why is it you cannot put a jumper from the red to the common circuit on the t-stat
I think it would be slightly more than auto, but less than on. It will run at times intervals to keep the air moving in your home, regardless if your heating or cooling is running.
I tried this and it didn’t work. I called a professional and he said that we popped a fuse because we allowed the RED wire to touch another one. Replaced the fuse and it worked. Lesson learned….don’t let the red wire touch another one.
Thank you fornthe video. My home came with an orange wire connected to the "O" slot in the original Honeywell thermostat (10 years old) still trying to figure out where that wire goes in the new smart thermostat since it doesn't have an "O" slot
In my unit, it won't allow me to remove one of the wires. It seems to be stuck and I don't want to break this little flimsy plate. How can I release the wire?
I turned the power at the breaker checked the cables and the power doesnt come on. How can i have blown a fuse if the power is off. We only have 1 red cable and with the old system there was a horseshoe connecting both c and rc. The instructions state to remove the jumper ONLY if i have 2 wires. I will have to call a tech. This sucks
You might have turned off the (2-pole) breaker for the compressor, but not the 1-pole breaker for the air handler, which is what energizes the 24V thermostatic cable. If that system is energized and you touch R (red/ resource/ hot) to C (cyan/ common/ neutral), then you will short the circuit and blow the 3- or 5-amp blade fuse on the control panel, which is likely located on the air handler. Those fuses are very cheap and easy to replace. Hope this helps. Sorry that happened to you. That said, please be careful working with electrical systems if you're not familiar with them. They can kill you, and UA-cam videos aren't always as accurate or clear as they should be. (And in fairness, UA-cam commenters--myself possibly included--are often just dangerously over-confident amateurs.)
I bought this particular system simply because it said I could set it up to automatically switch between heating and cooling, stupid Ohio weather, but I didn't see that shown in the video anywhere. Is that gonna be fairly self explainitory or am I going to have some issues trying to set that up? Also, there wouldn't happen to be a lock out mode or anything like that, would there? Uhhh... asking for a friend. Yeaaaah.
These instructions are not very helpful if you’re trying to replace an old manual mercury thermostat with the new Honeywell thermostat. I wish some instructions would include that detail.
@0:27: If you're going to advise novices on dealing with electrical systems, I think you really need to give more complete, specific directions. You mentioned turning off power to the A/C system as if it's a single breaker. Many systems have a 2-pole breaker for the compressor and a single-pole for the air handler, which controls voltage to the 24V themostatic cable. You'll see in the comments that some viewers switched off the compressor, but not the air handler, and then shorted the thermostatic line (R-C), blowing the blade fuse on the air handler's control panel. For those folks, it probably would've helped if you'd shown that step, especially given how important it is.
Do you have heat from a heat pump? I.e., can your A/C system run in reverse to heat your home? (Similar questions: Is O connected on the air handler's control panel? Do you read ~24V between R and O? Can you see a reversing valve at the compressor?) If yes, connect orange to O at the thermostat and set the default for heating or cooling depending on your climate. If no, leave it disconnected.
@@ncooty I contact the customer service and they told me to connect the Orange to O/W/B port and the white to W2/Aux/E port and this solved my problem. I may have a heat pump, but I don't think it's reversible, because in the winter the heating is only on gas. I don't know, are there pumps that are combined and work simultaneously on electricity and gas for better economy? So connected like this, the thermostat works perfectly for now.
@kirostar12 If the answer to any of my parenthetical questions above was "yes," then you likely have a heat pump that works as your primary heat source (which is extremely efficient). Unless your unit is wired strangely, O almost certainly operates the reversing valve on your A/C compressor: one way for heating (usually the default) and the other way (with O energized) for cooling. W2/Aux is used for a back-up heat source, such as a gas furnace, boiler, or heat strips. Glad it's working for you. I'd vote you don't fix what ain't broke... at least until spring. :)
I just put one (Thermostat) in with a taco relay to run my hot water pump (only) now I Don't have to run down stairs to put the pump on manually when I but the heat on!!! I control both from my phone.
The same to me. In my case, i have had an old analog thermostat. The blue wire is connected to the Y. On the Honey i connect the same with. But it doesn't work. Did indo wrong something?
with all these smart thermostats, they don't answer your questions. you're basically going to need to pay someone to put it in. i don't have any of these connections. It's a honeywell. why can't i just plug and play? wasted money on a google nest, doesn't have enough connections, wires won't even sit in the clamps properly, it's a frustrating mess unless you're an hvac or wiring person.
Have a question two of the pins what hold the wires in place broke off because I pushed it to hard so my question is will that stop my ac from blowing cold ??? On my furnace the red light is blinking 4 times instead of green
Thanks for taking the time to make a comprehensive video. It was very helpful. Now, I will go check if I have a C wire.
Thank you! This video gave me to confidence to do it myself. I appreciate your time to do this.
I have the same old wiring setup, I am setting up mine and was wondering you have a r to rc red jumper. What do you do with the jumper on the new plate? The instruction say if you have a r and rc jumped to remove the jumper on the new plate, I see you didn't do that. Am I missing something? Thanks....
I need to know this also😢
It's fine to jump R(h) and Rc if:
(a) your heating and cooling are controlled by the same control panel (such as from the air handler on your A/C or furnace)
OR
(b) you have separate heating and cooling control panels (e.g., A/C + gas boiler), but you don't care that the thermostatic input power comes from only one of them (and, therefore, that turning off that system shuts off thermostatic control for both systems).
Odds are good that you're in condition (a), above.
If you're in condition (b), I'd suggest running a separate R for each and not jumping Rh-Rc. That way, as long as either system is powered, your thermostat is powered.
I'm not an HVAC tech, though.
As is the board already jumps R and RC together...it's that little wire loop under the R terminals. If you have a separate wire for each you plug those into R and RC and then remove the little loop jumper.
Thank you! This video was amazing! I installed my thermostat successfully and it needed a lot of wiring which I did myself, thanks to you!
Thanks for this video. Very helpful.
Excellent video!! Spot on and extremely helpful!!
Best video ever! It totally worked for me! So thankful!
Excellent tutorial! Thank you!
Best tutorial I’ve ever used 😅 TY!
Have a question two of the pins what hold the wires in place broke off because I pushed it to hard so my question is will that stop my ac from blowing cold ???
Thank you for this video... Flawless installation.
Thank you for doing this video. It made my installation so much quicker and easier. I really appreciate the time you took to make this video available. Thanks again.
I have an old Honeywell thermostat that has an S2 wire…google says it’s the indoor/outdoor temperature sensor. Where would that go on the thermostat?
I have the same problem.
Did you manage to solve it?
Nope…just not to buy it.
Do you need to turn off power to the furnace as well or just the air conditioner?
It depends on whether the furnace feeds power on the thermostatic cable. This would usually be indicated by a wire from a furnace control panel connecting to the "Rh" terminal on a thermostat. The best way to tell is to check the thermostatic cable for voltage before messing with it. If you read voltage or an NCV beeps, you haven't cut all the power to it.
😢 wasn't that the first thing he pointed out?
My system doesn’t have a common wire but it does have an extra wire tucked in, can that be used as a common wire ?
and nobody answers your question.
Very informative video, thank you so much ❤ if you could add something, on initial setup, explain 2 stage cooling. I had extra brown wire which I found out must be connected to Y2 in Honeywell thermostat. Not everyone has 5 wires. 🙏
So I have a common wire that’s not being used right now on my current thermostat. Do I just connect it on both ends on the C terminal to get this thermostat to work?
That's my problem. I have 4 unused wires and an old mercury thermostat
@ buddy of mine who’s a HVAC guy just told me a couple days ago to just connect the common wire on both ends and it should work. 👍🏼
Do you know how to convert a Lennox Icomfort thermostat to a Honeywell. the issue is the i+ and i-
Just bought this thermostat, its only for heat and i dont have a C wire. I bought a external transformer that plugs into an outlet that i was told will work. My question is the transformer wires will go into the C terminal and which other?
This is a confusing setup. I have a o/b wire and a w wire which I put the w where it goes but dont know where the o/b wire goes. Please help...
So if there’s a RH and RC wire and I use the RC what do I do with the RH wire ?
Very helpful 😊 thank you for taking the time to prepare and share.
Is there a difference between using Wi-Fi and app?
Great , helpful video!!
Thank you
I have a orange wire where does that go
The orange wire is usually for a heat pump which should go to the "O" terminal.
@@josephwaters94there is no O terminal?
I watched another video and put the orange wire in Y2 and it worked perfectly!
Thanks worked perfectly
Hello IT is weater compensation? Or for underfloor heating?
I have an extra green wire which was connected to the O/B terminal. Where do I connect that “extra wire” on the Honeywell thermostat? This unit is an old carrier located in Florida. (Is a heat pump system)
did u figure it out i have same issue, did u try not plugging it in
@@LuckyChuckle I did and I was able to turn it on and it was cooling fine, but I was not able to lower or raise the temperature. I have a HVAC coming tomorrow.
I have a RTH9600wf were does the blue wire go the black is marked C
I have the old themostat and have wire R-W-G-C could I install A new Honeywell Smart WiFi Themosstat ?
Another very informative video. Thanks for sharing.
Glad you enjoyed it! I appreciate you for being a long term subscriber!
How do I set up auto cross over on this thermostat? 😢
I installed mine and it's working perfectly. My questions are: is the "Differential" setting the difference between what the actual room temp is compared to what the stat is reading or, an offset temp where it has to drop that differential setting before activating the furnace? Also, is there no backup battery if we lose power or does being connected to the net mean we we don't need it?
If you lose power in your home your heat/ac isn't going to work anyways so there's no need for backup power
@wbforsure2104 : The purpose of a back-up battery is to retain the settings and ensure that the system continues to operate as programmed when power is restored.
@@ncooty ...So are you saying anytime there's a power outage all thermostat settings are lost and have to be reprogrammed for this Honeywell thermostat ?
@harryberry474 I'm unsure if that's the case with this particular thermostat; sorry. Some have small internal batteries, whereas others store and access settings via an app (versus in the wall unit).
(On older-style thermostats, the settings were mechanical, so it wasn't an issue.)
I should also have mentioned that some units use replaceable batteries to power the unit itself without a c wire (common) or parasitic draw.
@@ncooty ...Yeah my cruuent thermostat has battery back up no "C" wire connected but my new Honeywell RTH9585WF doesn't have batteries but does have 3 small capacitors unsure if they are for back-up or something else. I do have the "C" wire wrapped around the wire bundle inside the wall I'm good to go just have to check if it's connected at the HVAC control panel inside the heater. Right now I'm just researching info as much as I can before doing the change. Even if it doesn't auto back-up it's a minor inconvenience .
Will this work with a Honeywell whole house ventilation system?
Hi I have a question about Honeywell Thermostat,
Does it stop working if the wifi service is intrupted ?
How does it know what the outside temperature is?
Where did it get the outdoor temp and humidity?
Probably the wifi
All of this and still don’t know what the power is for the common wire, I’m assuming it’s 24 v, why is it you cannot put a jumper from the red to the common circuit on the t-stat
Is there a way to connect additional sensor for this?
Is circulate feature for fan less running time than auto?
I think it would be slightly more than auto, but less than on. It will run at times intervals to keep the air moving in your home, regardless if your heating or cooling is running.
I tried this and it didn’t work. I called a professional and he said that we popped a fuse because we allowed the RED wire to touch another one. Replaced the fuse and it worked. Lesson learned….don’t let the red wire touch another one.
That's why he said to turn the power off
@@gatordunn1982ge, we did that. Turned the breaker off for the AC unit and the room with the thermostat.
thank you for this comment because I just had that happen to me and didn't know why it wasnt turning on
Got it .. dont short circuit the wires thanks
Where was the fuse?
How can I find out the number of cooling/heating stages of my system??
Does this thermostat have an audible "clicking" sound when it turns on? Also, can the screen be turned off completely?
Thank you fornthe video. My home came with an orange wire connected to the "O" slot in the original Honeywell thermostat (10 years old) still trying to figure out where that wire goes in the new smart thermostat since it doesn't have an "O" slot
Did you figure this out? Also the same issue
I had a message saying change the sensor, how and where do I change that
I have an extra orange wire, what do I do with that ?
I installed mine but when I turned the switch the thermostat won’t turn on 😢
My thermostat is not powering on after installation. My previous brand new thermostat worked just fine.
Are you reading voltage between R and any other wire, especially C?
If you don't have the C wire check that you have a blue wire in both locations. Had to connect my blue wire to the common on both devices. Powered up.
If you have a cyan wire, you have a C wire. The only question is whether or not it's connected to line common.
THANK YOU!
Tnk u i love all except the little hole for the tstat wires. 5 min to inst and 45 min to wi fi settings. Nit good 4 business ok for home
What does stage of cooling mean?
Thanks for the video. I do not have a Base plate. How can I install it without a base plate?
Mine won’t work on auto does that mean a wire is not hooked up correctly?
In my unit, it won't allow me to remove one of the wires. It seems to be stuck and I don't want to break this little flimsy plate. How can I release the wire?
How much would cost to fit it
greatly appreciate it
I turned the power at the breaker checked the cables and the power doesnt come on. How can i have blown a fuse if the power is off. We only have 1 red cable and with the old system there was a horseshoe connecting both c and rc. The instructions state to remove the jumper ONLY if i have 2 wires. I will have to call a tech. This sucks
You might have turned off the (2-pole) breaker for the compressor, but not the 1-pole breaker for the air handler, which is what energizes the 24V thermostatic cable.
If that system is energized and you touch R (red/ resource/ hot) to C (cyan/ common/ neutral), then you will short the circuit and blow the 3- or 5-amp blade fuse on the control panel, which is likely located on the air handler.
Those fuses are very cheap and easy to replace.
Hope this helps. Sorry that happened to you. That said, please be careful working with electrical systems if you're not familiar with them. They can kill you, and UA-cam videos aren't always as accurate or clear as they should be. (And in fairness, UA-cam commenters--myself possibly included--are often just dangerously over-confident amateurs.)
I bought this particular system simply because it said I could set it up to automatically switch between heating and cooling, stupid Ohio weather, but I didn't see that shown in the video anywhere. Is that gonna be fairly self explainitory or am I going to have some issues trying to set that up? Also, there wouldn't happen to be a lock out mode or anything like that, would there? Uhhh... asking for a friend. Yeaaaah.
These instructions are not very helpful if you’re trying to replace an old manual mercury thermostat with the new Honeywell thermostat. I wish some instructions would include that detail.
@0:27: If you're going to advise novices on dealing with electrical systems, I think you really need to give more complete, specific directions. You mentioned turning off power to the A/C system as if it's a single breaker. Many systems have a 2-pole breaker for the compressor and a single-pole for the air handler, which controls voltage to the 24V themostatic cable. You'll see in the comments that some viewers switched off the compressor, but not the air handler, and then shorted the thermostatic line (R-C), blowing the blade fuse on the air handler's control panel.
For those folks, it probably would've helped if you'd shown that step, especially given how important it is.
I have O for Orange wire and don't know where to put in? They have only one connection for W/O/B witch is very stupid.
Do you have heat from a heat pump? I.e., can your A/C system run in reverse to heat your home? (Similar questions: Is O connected on the air handler's control panel? Do you read ~24V between R and O? Can you see a reversing valve at the compressor?)
If yes, connect orange to O at the thermostat and set the default for heating or cooling depending on your climate. If no, leave it disconnected.
@@ncooty I contact the customer service and they told me to connect the Orange to O/W/B port and the white to W2/Aux/E port and this solved my problem. I may have a heat pump, but I don't think it's reversible, because in the winter the heating is only on gas. I don't know, are there pumps that are combined and work simultaneously on electricity and gas for better economy? So connected like this, the thermostat works perfectly for now.
@kirostar12 If the answer to any of my parenthetical questions above was "yes," then you likely have a heat pump that works as your primary heat source (which is extremely efficient). Unless your unit is wired strangely, O almost certainly operates the reversing valve on your A/C compressor: one way for heating (usually the default) and the other way (with O energized) for cooling. W2/Aux is used for a back-up heat source, such as a gas furnace, boiler, or heat strips.
Glad it's working for you. I'd vote you don't fix what ain't broke... at least until spring. :)
I dont have C wire. Why is that? It wont turn on
How do i repusrpose the G wire for C wire?
How do you?
Where is the video for this ? He said it would be in the description and it is not.
How do u change to celcious!!!!!!!?????
I followed the instructions and installed my new thermostat but now the outside fan unit stays on all the time, what should I do?
How do you remove the wires from the thermostat????Help!
Push in on the little dimple on the wire connector and pull.
Screen wont turn on but i hear it working. Whats happening?
Thank you
For some reasons the schedule icon desapear from the app.
Mine won’t turn on 😢
I've gotta brown wire
Where's the video showing how to use the green wire as a C wire ?
I just put one (Thermostat) in with a taco relay to run my hot water pump (only) now I Don't have to run down stairs to put the pump on manually when I but the heat on!!! I control both from my phone.
Lol
Never heard of a taco relay.
Is that a game😂
@@blueskies00 All you have to do is type taco switching relay and you will see what it is and what they do!!!
I wonder if you can set a password on this device
Trying to lock the kids (possibly hubby, too) out, as well, I see!
Don’t have a C wire , only two
My thermostat doesn’t power up? Why is this?
Make sure your c wire is connected at your furnace. It make be disconnected if it was not used originally. I had that same problem.
Sometimes there is a fuse or breaker inside the furnace 3or5amp
The same to me. In my case, i have had an old analog thermostat. The blue wire is connected to the Y. On the Honey i connect the same with. But it doesn't work. Did indo wrong something?
I ordered a c adapter
Did not show how to set the time
I guess c is common i guess
Yes
with all these smart thermostats, they don't answer your questions. you're basically going to need to pay someone to put it in. i don't have any of these connections. It's a honeywell. why can't i just plug and play? wasted money on a google nest, doesn't have enough connections, wires won't even sit in the clamps properly, it's a frustrating mess unless you're an hvac or wiring person.
Wilkinson Pike
So ridiculous that I can’t change it to Celcius
He squeezed the casing off the red wire. If you look, it’s bare in one spot.
Yep downside of using pliers
Bergnaum Mountains
hahaha. the most stupid demonstration i have ever seen .
Pos
It has really good reviews and works fine for me
How do I know if I have a 1 stage or 2 stage furnace? No AC
Have a question two of the pins what hold the wires in place broke off because I pushed it to hard so my question is will that stop my ac from blowing cold ??? On my furnace the red light is blinking 4 times instead of green