I got woken up at 4:00 am today with "the thermostat stopped working" and a 62 degree house. This video was the difference between being able to fix it myself or calling an electrician and waiting for who knows how long. Thanks!
Thank you sir. You are the only person to explane those damn wires. Now I can hook up my garage heater up. No one else explained it the simple way you did.
Your video definitely helped me understand what each wire was for. Luckily, our thermostat had five wires and our nest learning thermostat was a simple enough install.
Thanks for the explanation. All the videos I've watched have not made sense, but once I understand the reasons why, I can rewire my thermostat on my own now. Thanks!
Hi. What if I have a blue (B) wire and a gray wire that’s not attached to anything. I’m trying to install an Amazon thermostat and can’t figure out if the Gray wire is an unused C wire, since there’s no C terminal on the old thermostat. Any thoughts or advice?
Simple and to the point. Have a quick query, planning to replace the old thermostat(no C wire) with Nest 2020 model. Stuck up seeing a Red wire also connected to the Y terminal in the current thermostat. Highly appreciate your advice.
I would recommend getting the Nest Gen 3: amzn.to/3urAZ4e or the Nest E: amzn.to/3qSRh3L if you don't have a common wire because in most cases they don't require a common wire so it will save you the trouble of adding one or adding a transformer. However if you do go with the 2020 model: amzn.to/3sssF2y this video shows you how to add a common wire transformer to get it to work: ua-cam.com/video/yi5kfn3bmEk/v-deo.html The 2020 Nest Thermostat always requires a common wire for installation. These videos show you how to install the Nest 3rd Generation: ua-cam.com/video/uQE7OeNFcIg/v-deo.html and the Nest E Thermostat: ua-cam.com/video/BPtkEVqIWzE/v-deo.html
R is always power. Rc is power coming from a cooling system, Rh is power coming from the heating system, in case the systems are separate enough to be providing them independently.
I have an old analog thermostat. But the Blue wire is connected to the Y letter. In normal, the Blue wire is connected to the C letter. Now i want to replace with a new thermostat. Where does the Blue should i connect to? Y or C? Thank you.
Same! I wired it with blue as common and orange to the ob. Put configuration to o and I have no heat! Seems like it should be working by their setup! I bought it last night!
I hooked it up the way you show here but I don't have an air conditioner and the digital screen on my thermostat isn't turning on. Could the yellow wire cause that? There is also a brown wire that is in the wall but was not used on the previous thermostat. I'm not sure what that wire is for.
I hooked up a ecobee because I installed a new split central air unit and coil and I noticed that the common wire is not hooked to anything on the furnace box side.
Help... I have an ancient Trane thermostat & Furnace. It is 4 wire-R,Y,G,W. When I try and connect the new Honeywell TPro 6 that I have, it has a blue wire, I had it working but now it stopped working. I have connected the blue wire to the C (common) on the blower and it has a white wire already connected there. It was working great but when I changed the filter, and turned the power off, it stopped working. It says AC Turned on but nothing works. Equipment says it is in a "perpetual standby" mode. So I connected the old Trane 4-wire thermostat back up and it works fine. I tried to disconnecting the blue wire on the TPro6, but the thermostat went dark without the blue wire so it obviously needs it.
Thank you for your video. My cooling system keeps running and cannot be turn off. Question: If my Y (Yellow) wire's Ohm value is over 24 Ohm, would it be the problem to run cooling?
Great video thanks very informative , though my thermostat only has white G, red Y, white W and red R only 4 cables can I still set up any , any wifi thermostat?
Hi...I have a heat pump a/c unit. Trying to wire a new Honeywell wifi thermostat. I'm down to the last wire and I see a jumper for the R / RC screws. I only have an R wire leftover. Do I leave the jumper? Do I plug the R wire in WITH the jumper? Not sure what to do!
I took off old thermostat and there was no C wire connected. However there is a blue wire and a brown wire that are not connected. This is a new building (2017) so is the blue wire the C wire and they just decided not to connect it to the thermostat?
Can anyone pls help me, I'm trying to install an ecobee smart tstat. However the old thermostat didn't use the green wire and the blue wire was in the "G" slot. The thermostat did run on batteries so I understand why the blue wire wasn't needed...but my question is why is the blue wire going into the G slot? Any help gladly appreciated
I try to install the ecobee thermostat to replace the honeywell old thermostat. I check the 2 wires go to my furnace. I see 2 wires, one connect to R and the other one connect to G instead on the W. There is nothing connect to the W on my furnace. My question is does it make any different? My heating been work like that. Not sure why my is not connect to W instead on on the G. Please advise how i can connect the wire G wire form the furnace to the ecobee thermostat. Should i connect to the G or the W going from my furnace? Thanks in advantage.
I have an electric mobile home furnace and I have red, green, white, and black wires. What do I have for these wires? I can’t figure it out. I don’t have an Air Conditioner, just electric furnace.
You gwt like 10 thimbs up from me man!! Thank you I have a crappy new m30 lennox thermostat with 15 terminals. My last one had 4. I'm just going to hook 4 up now I know thanks great video!!
I have an old Honeywell thermostat with just a lever to control. I only have a red and white wire and I purchased a colorsmart Honeywell thermostat that needs a common wire. Is there an easy fix? The thermostat did have a short wire in the box.
Hi, have a question. I have an old Carrier programmable thermostat that seems to be using only 2 of 6 wires sticking out of my wall. It uses a red colored wire connected to O/W2 and a green colored wire connected to Y1/W2. It works, but I want to replace it with a smart thermostat. The other 4 unidentified wires sticking out of the wall are 1 x Blue, 1 x White and 2 x Black. How can I identify which colored wire is what? FYI, all the wires are coming from a Carrier Packaged Unit 48DP012. Thanks in advance.
Hi there, I have a 3 wire system; red (with the thing metal connector thingy), green, and black. It is a ct100 thermostat. It started marking noise one night and the only way to stop it was to remove it from the wires. I reconnected it (i think the correct way) and the heat works, but now the furnace takes a long time to kick on. I can hear it turn on (like an electric sound) but it takes like 40 seconds after clicking to actually turn on. I put the wires like so: black into W, red into RH, Green into G. Is that correct? I also tried testing the wires with a multimeter and the black and green show power, but the red doesn't. Can I check in the basement/furnace room somewhere to see if that's the issues?
My existing system is Gas Furnace and single AC unit. My existing thermostat has C,G,W,Y and R (no jumper). The new Thermostat has the choice of RC or RH with a jumper. (no R). Question: Which terminal do I place the existing "R" wire to? RC or RH? Do I leave the jumper in or remove?
@@robira1313 I was told by Emerson (the maker of my new thermostat Emerson UP310) and they directed me to connect the "R" wire on my old thermostat to the RH wire. The RH and RC wires are jumped on this thermostat which they said to leaver in place.
I was about to ask a question but noticed you have 1 to 10 months to a year or so comments with no answer to there inquiry. But I’ll go for it anyway, how about in need of heat in desperate needs, could you connect the red to white wire for heat (breaker off before joining) for a temp fix?
I have baseboard heat furnace. I have 2 wire connected to R and W in my old thermostat. There is no C wire. However there are 2 extra wire inside the wall and these are not connected to anything. After watching this video my question is, can I use a jumper from R wire to C wire on Nest thermostat?
Never jumper a wire from R and C or else your furnace will blow!!! Well your fuse will blow. Since you have extra unused wires, you can use that wire as your C wire. Make sure both sides are connected to C on the furnace board and on the thermostat.
R simply means 24v your furnace or thermostat does not know what color the wire is. I love to wire my thermostats like this to confuse the techs that think the color matters. R-white W-green Y-red C-yellow G-green Also you need to hook up g to bring on fan in ac mode what you don’t need is Y to the board you could take that from stat to condenser
I have the following Gray(S2), Pink( S1), Blue(C), White (W/W1), Yellow(Y\Y2), Green(G), Red(Red), nothing(Y1/W2**), Orange (O, W2) Seems like my furnace and heat pump are coming on at the same time.
The fan is the only color that makes sense. Green for wind. Heating should be red, AC should be blue, Power should be yellow for electric. Would be 10x easier to remember something like that.
My question what is the L and terminals in a Thermostat I have L = ? I need you to decode the L function I hade a 5 wire and a 3 wire 3 wire had blue = c com/ white = E for emergency heat to melt ice buildup on compressor Red was o = reversing valve On the 5 wire White = w1 my heat Green = G my fan Red = R my 24 volts Yellow = Y. Ac Blue. = L. ? I change the mercury TState to a pro 4 could not get heat working Put back on the mercury thermostat work fine. Through all it’s function The mercury thermostat need the 8 wires to work there 4 mercury bulbs in the 1 thermostat it a heat pump system control from Carrier
With a 7 wire hook up you most likely have heating or cooling system with two stage heating or two stage cooling or both. These two extra colors could be any color, however you would need to see what terminals they are connected to on your existing thermostat then transfer them over to the new thermostat for staged heating or cooling. If you don't know what terminal they are on you can pop the cover on your HVAC system and take a look at the control board and it will show you what terminal they should be connected to on your HVAC system.
Really like your videos! But … it looks like you’re looking at the camera, which is good, but you’re not. This doesn’t interfere with your good content, but its a little distracting. Thanks ☺️
Hi I could really use the help with my wiring, I'm getting a nest 3rd gen thermostat and I wanted to know where the e and r wire go because I get lost there C R O G E- this is a white wire. Y That's how they look on my thermostat now. I live in central Florida, incase that helps a little bit more to understand.
The best way to determine what the E terminal is is to look at where the E wire goes to on your furnace control board. Most likely the E wire is your Emergency heat, which should be connected to the W terminal of the thermostat.
That was great info, for someone who has that wire set up, but I have only 4 wires connected to a thermostat they are as follows Red Green Blue, and Yellow the old thermostat has the following {RC} Nothing on it {RH} Red wire {O/B} Nothing on it {Y} Has a Blue wire {G} has a Green wire {W/E} has a Yellow wire and there's a {C} Nothing on it, And the new thermostat has a lot more connection options as follows in order on the left side {S} {S} {Y}{Y2}{G}{C}{U}{U} then you have the ARight side as follows {L/A(A)} (O/B) (AUX){W2} (E) {W} }{K} {R} Rc} what a mess. I was about to change the thermostat to a programmable but I'm lost on what does what here and help would be great the new Thermostat is the Honeywell Pro Series T6 Pro TH6210U2001, The Old thermostat is the Comfort Sentry from One Hour Heating and cooling. wish I could upload a couple photos... Any help on this would be greatly appreciated...
I got woken up at 4:00 am today with "the thermostat stopped working" and a 62 degree house. This video was the difference between being able to fix it myself or calling an electrician and waiting for who knows how long. Thanks!
Thank you sir. You are the only person to explane those damn wires. Now I can hook up my garage heater up. No one else explained it the simple way you did.
Absolutely. That you for making it easy.
Your video definitely helped me understand what each wire was for. Luckily, our thermostat had five wires and our nest learning thermostat was a simple enough install.
Thanks for the explanation. All the videos I've watched have not made sense, but once I understand the reasons why, I can rewire my thermostat on my own now. Thanks!
Hi. What if I have a blue (B) wire and a gray wire that’s not attached to anything. I’m trying to install an Amazon thermostat and can’t figure out if the Gray wire is an unused C wire, since there’s no C terminal on the old thermostat. Any thoughts or advice?
Simple and to the point. Have a quick query, planning to replace the old thermostat(no C wire) with Nest 2020 model. Stuck up seeing a Red wire also connected to the Y terminal in the current thermostat. Highly appreciate your advice.
I would recommend getting the Nest Gen 3: amzn.to/3urAZ4e or the Nest E: amzn.to/3qSRh3L if you don't have a common wire because in most cases they don't require a common wire so it will save you the trouble of adding one or adding a transformer. However if you do go with the 2020 model: amzn.to/3sssF2y this video shows you how to add a common wire transformer to get it to work: ua-cam.com/video/yi5kfn3bmEk/v-deo.html The 2020 Nest Thermostat always requires a common wire for installation. These videos show you how to install the Nest 3rd Generation: ua-cam.com/video/uQE7OeNFcIg/v-deo.html and the Nest E Thermostat: ua-cam.com/video/BPtkEVqIWzE/v-deo.html
Hey, great vid btw I have a question, what do RC and RH connections mean on my smart thermostat anybody?
R is always power. Rc is power coming from a cooling system, Rh is power coming from the heating system, in case the systems are separate enough to be providing them independently.
I don't have a yellow and I cant get the ac to work on my nest, but heat works when I put the green in the ob slot
I have an old analog thermostat. But the Blue wire is connected to the Y letter. In normal, the Blue wire is connected to the C letter.
Now i want to replace with a new thermostat. Where does the Blue should i connect to? Y or C? Thank you.
The best explanation that I ever heard
Is the blue wire a way for electricity to return to the source?
I have all those wires plus a ORANGE one? Whats that one for
Same! I wired it with blue as common and orange to the ob. Put configuration to o and I have no heat! Seems like it should be working by their setup! I bought it last night!
I hooked it up the way you show here but I don't have an air conditioner and the digital screen on my thermostat isn't turning on. Could the yellow wire cause that? There is also a brown wire that is in the wall but was not used on the previous thermostat. I'm not sure what that wire is for.
If you don’t have yellow, can you use blue for the yellow wire input for nest thermostat
Well done sir!!! Much appreciated ! Your explanation was clear.
You are welcome! Thanks for watching and subscribing!
hi i have 3 wire red black and white is it ganna work with power heat and cooling?
I have a 4 wire system yellow, red, green and black. What is the black wire used for?
I hooked up a ecobee because I installed a new split central air unit and coil and I noticed that the common wire is not hooked to anything on the furnace box side.
Help... I have an ancient Trane thermostat & Furnace. It is 4 wire-R,Y,G,W. When I try and connect the new Honeywell TPro 6 that I have, it has a blue wire, I had it working but now it stopped working. I have connected the blue wire to the C (common) on the blower and it has a white wire already connected there. It was working great but when I changed the filter, and turned the power off, it stopped working. It says AC Turned on but nothing works. Equipment says it is in a "perpetual standby" mode. So I connected the old Trane 4-wire thermostat back up and it works fine.
I tried to disconnecting the blue wire on the TPro6, but the thermostat went dark without the blue wire so it obviously needs it.
very very clear and explanatory great job
Thank you for your video. My cooling system keeps running and cannot be turn off.
Question: If my Y (Yellow) wire's Ohm value is over 24 Ohm, would it be the problem to run cooling?
Great video thanks very informative , though my thermostat only has white G, red Y, white W and red R only 4 cables can I still set up any , any wifi thermostat?
Hi...I have a heat pump a/c unit. Trying to wire a new Honeywell wifi thermostat. I'm down to the last wire and I see a jumper for the R / RC screws. I only have an R wire leftover.
Do I leave the jumper? Do I plug the R wire in WITH the jumper? Not sure what to do!
can I leave the green wire unconnected, and just connect W1 and Rh?
I'm so confused because I only have a white and Red wire I don't know why I don't have the other colors.
I took off old thermostat and there was no C wire connected. However there is a blue wire and a brown wire that are not connected. This is a new building (2017) so is the blue wire the C wire and they just decided not to connect it to the thermostat?
Extremely Helpful. thanks for sharing.
This helped but I have a question, what if you thermostat has a wire that is marked RC should that be connected as well? Can you answer this
I hooked a Honeywell thermostat which doesn't require batteries the way you have it but I also have and OG wire.
What is that for? Thanks
Can anyone pls help me, I'm trying to install an ecobee smart tstat. However the old thermostat didn't use the green wire and the blue wire was in the "G" slot. The thermostat did run on batteries so I understand why the blue wire wasn't needed...but my question is why is the blue wire going into the G slot? Any help gladly appreciated
I try to install the ecobee thermostat to replace the honeywell old thermostat. I check the 2 wires go to my furnace. I see 2 wires, one connect to R and the other one connect to G instead on the W. There is nothing connect to the W on my furnace. My question is does it make any different? My heating been work like that. Not sure why my is not connect to W instead on on the G. Please advise how i can connect the wire G wire form the furnace to the ecobee thermostat. Should i connect to the G or the W going from my furnace? Thanks in advantage.
I have an electric mobile home furnace and I have red, green, white, and black wires. What do I have for these wires? I can’t figure it out. I don’t have an Air Conditioner, just electric furnace.
I have a blue one and a brown. Assuming the blue goes into C, where does the brown go?
Where does brown wire g
@@dwaynedrummond5730 It is an extra wire that is used for accessories like a humidifier. It may not have anything connected to it.
What is the black wire for
can you help me I only have a 2 wire thermostat. It has a blue and white wire where does each go? I stupidly forgot to mark them
You gwt like 10 thimbs up from me man!! Thank you I have a crappy new m30 lennox thermostat with 15 terminals. My last one had 4. I'm just going to hook 4 up now I know thanks great video!!
I have an old Honeywell thermostat with just a lever to control. I only have a red and white wire and I purchased a colorsmart Honeywell thermostat that needs a common wire. Is there an easy fix? The thermostat did have a short wire in the box.
I have an LG with 3 wires. Yellow red black. Having problems hooking up a nest
thank you, very informative
Hi, have a question. I have an old Carrier programmable thermostat that seems to be using only 2 of 6 wires sticking out of my wall. It uses a red colored wire connected to O/W2 and a green colored wire connected to Y1/W2. It works, but I want to replace it with a smart thermostat. The other 4 unidentified wires sticking out of the wall are 1 x Blue, 1 x White and 2 x Black. How can I identify which colored wire is what? FYI, all the wires are coming from a Carrier Packaged Unit 48DP012. Thanks in advance.
Than you
I have fujitsu concealed air conditioner with 3 wires red white and black, is this gonna work with any wifi thermostat?
I was told we look similar.. and it seems we're both from Chicagoland
what if you only have two wires coming from the wall a RED and WHITE...? RED is power and WHITE goes where...? thanks
Umm Did you forget to go into the 7 or 8 wire systems as you said you would at the end of the video?? Only reason I stayed till the end...... 😠
Chill out, why get so mad lol
Can this be used on a modulater valve?
Thankyou
I have 6 wires on my thermostat… what is that for..???
Thankyou
Hi there, I have a 3 wire system; red (with the thing metal connector thingy), green, and black. It is a ct100 thermostat. It started marking noise one night and the only way to stop it was to remove it from the wires. I reconnected it (i think the correct way) and the heat works, but now the furnace takes a long time to kick on. I can hear it turn on (like an electric sound) but it takes like 40 seconds after clicking to actually turn on. I put the wires like so: black into W, red into RH, Green into G. Is that correct? I also tried testing the wires with a multimeter and the black and green show power, but the red doesn't. Can I check in the basement/furnace room somewhere to see if that's the issues?
I have a 6 wire system… still waiting for you to get to that part “at the end”
My existing system is Gas Furnace and single AC unit. My existing thermostat has C,G,W,Y and R (no jumper). The new Thermostat has the choice of RC or RH with a jumper. (no R). Question: Which terminal do I place the existing "R" wire to? RC or RH? Do I leave the jumper in or remove?
I had the exact same question above. I am hoping to get an answer quicker than 4 days. Did you resolve your inquiry?
@@robira1313 I was told by Emerson (the maker of my new thermostat Emerson UP310) and they directed me to connect the "R" wire on my old thermostat to the RH wire. The RH and RC wires are jumped on this thermostat which they said to leaver in place.
Thanks man. That was well explained.
Hello, I have 9 wires with two wires on U1, U1 respectively. There is no U1 on nest wire code. Any help will be appreciated
I was about to ask a question but noticed you have 1 to 10 months to a year or so comments with no answer to there inquiry. But I’ll go for it anyway, how about in need of heat in desperate needs, could you connect the red to white wire for heat (breaker off before joining) for a temp fix?
Running the fan also helps if you have a wood burning stove to help distribute the heat.
I have baseboard heat furnace. I have 2 wire connected to R and W in my old thermostat. There is no C wire. However there are 2 extra wire inside the wall and these are not connected to anything.
After watching this video my question is, can I use a jumper from R wire to C wire on Nest thermostat?
Never jumper a wire from R and C or else your furnace will blow!!! Well your fuse will blow. Since you have extra unused wires, you can use that wire as your C wire. Make sure both sides are connected to C on the furnace board and on the thermostat.
I have a four wire system R..G..W B purchased honeywell series ct30 it's wiring requirements are R G W Y my problem blue wire yellow wire
R simply means 24v your furnace or thermostat does not know what color the wire is.
I love to wire my thermostats like this to confuse the techs that think the color matters.
R-white
W-green
Y-red
C-yellow
G-green
Also you need to hook up g to bring on fan in ac mode what you don’t need is Y to the board you could take that from stat to condenser
Thanks so much for this!
what about purple? mine came unplugged and i am afraid to fire up furnace.
hka-15c
Thanks
hmm I only have a: R, G, B, W white...I also had a short black connector wire...I can’t get my AC unit to turn on but all else seems to work :(
Great video Sir…thanks!
Your vary much on it with detales
GOD BLESS YOU. THANKS
and what if you don't have a Y-wire and someone has put the C-wire as a replacement?
Could you make a 7 wire system works with 5 wire thermostat?
Hi. We have a Honeywell but no green wire..only red blue yellow and white. No green, which it calls for. What to do
Did you ever figure it out?
@@peachesa996 lol yep. Thx
Sounds like the N1 N L L1 thermostat I bought is not compatible to a four wire. RH W Y G
I have the following Gray(S2), Pink( S1), Blue(C), White (W/W1), Yellow(Y\Y2), Green(G), Red(Red), nothing(Y1/W2**), Orange (O, W2)
Seems like my furnace and heat pump are coming on at the same time.
Thank you for making it easy. TTT
Sounds like I will be removing G. My fan is always running without heating or cooling.
The fan is the only color that makes sense. Green for wind. Heating should be red, AC should be blue, Power should be yellow for electric. Would be 10x easier to remember something like that.
Awesome
What if I have a black wire
What if I got to yellow wires
1:54 You got a mistake. Eh, so-so video, a bit verbose, you alluded to 7-wire systems but didn't mention those extra wires.
Omg thank you!
Any time thanks for watching and subscribing.
My question what is the L and terminals in a Thermostat
I have
L = ? I need you to decode the L function
I hade a 5 wire and a 3 wire
3 wire had blue = c com/
white = E for emergency heat to melt ice buildup on compressor
Red was o = reversing valve
On the 5 wire
White = w1 my heat
Green = G my fan
Red = R my 24 volts
Yellow = Y. Ac
Blue. = L. ?
I change the mercury TState to a pro 4 could not get heat working
Put back on the mercury thermostat work fine. Through all it’s function
The mercury thermostat need the 8 wires to work there 4 mercury bulbs in the 1 thermostat it a heat pump system control from Carrier
What about an orange wire? I have 6 total wires
I have the same. Trying to figure this out
Me too. Can't find any info for a 6 wire thermostat on UA-cam
Hi, where does a black wire go? I have Yellow, Red, Green, Black. Thank you
The black, blue or brown will be use for C which stands for Common
She said that he will talk about systems that have seven or eight wires at the end of the video but he didn't where is it?
Near the beginning, you say that you'll discuss 7-wire hookups at the end of the video ... but you forgot :-)
With a 7 wire hook up you most likely have heating or cooling system with two stage heating or two stage cooling or both. These two extra colors could be any color, however you would need to see what terminals they are connected to on your existing thermostat then transfer them over to the new thermostat for staged heating or cooling. If you don't know what terminal they are on you can pop the cover on your HVAC system and take a look at the control board and it will show you what terminal they should be connected to on your HVAC system.
I don't have a yellow wire I have white blue green and red
Really like your videos! But … it looks like you’re looking at the camera, which is good, but you’re not. This doesn’t interfere with your good content, but its a little distracting. Thanks ☺️
3 wire here!
Help!
What color wires do you have and what kind of HVAC system?
@@OneHourSmartHome no HVAC system regular boiler red black and white wire
Hi I could really use the help with my wiring, I'm getting a nest 3rd gen thermostat and I wanted to know where the e and r wire go because I get lost there
C R
O G
E- this is a white wire. Y
That's how they look on my thermostat now. I live in central Florida, incase that helps a little bit more to understand.
Adan, this video should help: ua-cam.com/video/6qwFra15pdY/v-deo.html
@@OneHourSmartHome I watched it so would that mean the e terminal even though it's a white wire will go were you say it goes?
The best way to determine what the E terminal is is to look at where the E wire goes to on your furnace control board. Most likely the E wire is your Emergency heat, which should be connected to the W terminal of the thermostat.
I'm trying to connect my wires this video did me nothing
I give up. Paying someone. Let's face it, that's what we're all trying to avoid.
Get the he'll off my phone
Bro, jus show me how to wire da shit
Could you help with a 7 wire system that has a w2,e,o,c,r,y,g
That was great info, for someone who has that wire set up, but I have only 4 wires connected to a thermostat they are as follows Red Green Blue, and Yellow the old thermostat has the following {RC} Nothing on it {RH} Red wire {O/B} Nothing on it {Y} Has a Blue wire {G} has a Green wire {W/E} has a Yellow wire and there's a {C} Nothing on it, And the new thermostat has a lot more connection options as follows in order on the left side {S} {S} {Y}{Y2}{G}{C}{U}{U} then you have the ARight side as follows {L/A(A)} (O/B) (AUX){W2} (E) {W} }{K} {R} Rc} what a mess.
I was about to change the thermostat to a programmable but I'm lost on what does what here and help would be great the new Thermostat is the Honeywell Pro Series T6 Pro TH6210U2001, The Old thermostat is the Comfort Sentry from One Hour Heating and cooling. wish I could upload a couple photos...
Any help on this would be greatly appreciated...
Well done, thanks!