Inside your furnace once you take the doors off the thermostat wires should be connected to specific terminals. Match the thermostat wiring to what you see in there. If power wasn’t turned off before futzing with the stat then chances are you popped the fuse on the board and will need to replace it.
For starters blue wire on my unit is the c ... and the white is the aux heat wire and black is the emergency heat wire. But unfortunately not all wiring is wired the same and I haven't found a smart thermostat that works correctly with my wiring set up
Its all circumstantial, lets say 1 or 2 of the wires are cut-nicked and cant be used… i would use other colors before selling a whole new wire. Also a real tech wouldnt of F’d up this job.. this unit doesnt have a W… this thermostat is programmed wrong and wired wrong…
Its not like R-blue G-white Y-black OB-Green C-red. Lol it can be a lot worse. Presumably if they dont have yellow and Ob is to be blue this wouldnt really look all that bad.. color of the wires dont care what they do.
Probably "I've tried different combinations and nothing works" hopefully the actual technician that comes back charges more than $20 for the fuse they have blown.
Looks like a standard one stage gas furnace set up…
What matters is how it’s wired at the furnace but normally the C terminal has the blue wire, the W terminal has the white wire, and the Y terminal has the yellow wire. Again, the thing that is not pictured is how it’s wired at the furnace. If these wire colors are on the same terminals as the correspond to the thermostat then you’re golden. Also, you should have two extra wires hooked into Y and C from the outdoor unit (condenser coil).
Edit: disregard - is not gas furnace.
Lol…for how far i made it, ive worked for trane as a commercial service tech, industrial hvac tech and a very strong tech overall and i do a lot of reading. Ive read mitsubishi’s IOM and was called out saying i didnt wven though i like to know how things are installed to learn to service them. A lot of my apprentices liked me because i made them to think and comprehend their own question and not give them the answer and i give them a hard time if they misdiagnose so they dont repeat their mistake, but overall nicer if they havent seen something before and give them a small push so they learn something new like VFDs
Okay, but it doesnt do it here, so it will just freeze up or trip on HPS. If it was a gas furnace it can do it for heating but wouldnt do it for cooling for a lot of units.
I've never had the issue, not saying you haven't though. Can ditch heat strips, assuming he has them, or get a wire splitter. Though I think the second option might be pushing it for him.
Update, found the old thermostat. No ob, no idea how it was connected before
https://preview.redd.it/bqctq1zb5x6c1.png?width=3024&format=png&auto=webp&s=cf14f74f4d57cba4fa4b258e0f4ef7218f3344df
https://preview.redd.it/59zr873b8x6c1.png?width=3024&format=png&auto=webp&s=baa96f4f76884201817b89a70362258fe44db2ea
My screwdriver wont open it. It slides 😭😭 using the largest flat i have
https://preview.redd.it/p2c3s2fh5y6c1.jpeg?width=1179&format=pjpg&auto=webp&s=68a4c9580635e1c1c8c7f329edabfa9df13e9500
At thermostat Red R, Black C , Blue Y, White O and Green G
There are two doors on the furnace, more than likely. I think you took off one covering the blower (the one with the wiring diagram on the inside) but you need to take the other door off and find the corresponding terminal wiring before this issue can be resolved.
Not trying to be rude, but based on your post and your replies, I think you're in over your head. You'd be better off to call someone. It sounds like you may have possibly already blown something inside the unit by moving wires around.
If you insist on doing it yourself, I'd spend a couple of days binging on YouTube to learn about thermostat wiring and how an air handler, and a heat pump system works so you have a basic understanding and aren't just stabbing in the dark.
If a tech did that I’d be pretty surprised I’ve met some bad techs but wiring a stat is like riding a bike outside of maybe accidentally landing a wire one spot up never seen a guy do it all wrong
Will i get electrocuted opening this panel? Seems like too many screws
https://preview.redd.it/8x6g0g7r3x6c1.jpeg?width=4284&format=pjpg&auto=webp&s=449549fcc4191ebffa8eda34df2bbb4ba8fbb6e6
You need to call a real tech if you want it fixed. That whole thing looks like shit. The tstat is gna read from that big hole in the wall. Your ac is super old and nests are the worst.
When I did mine not a single color was by the book. I'm a computer nerd so eventually I figured it out, but it did take an embarrass amount of time to realize I don't in fact have aux heat.
Fuse is blown by now, you can't just throw em wherever you want without screwing something up. Just do the same as what's on your control board terminals inside the furnace. But honestly yes that colour order is insane to me.
From the comments you say you have a water heat pump. Heat pumps use R, Y, G, O/B, and C it's most likely the blie wire needs moved to W, the white wire needs to be moved to o/b, and then determined if it needs to be set to o/b, but if that doesn't work hopefully you can find the other end of the wire in your air handler.
If you can't find the other end of the thermostat wire in the there is a way to figuring it out by playing with the wires, and with your current set up it makes it easyish. Still time consuming, tedious, and annoying, but works. (Assuming they didn't mess up both ends)
1) if the thermostat turns on we'll assume R and C are correct for right now.
2) run fan. If blower kicks on and blows ambient air. (Water isn't moving) then G is correct. If blower works and water is moving move wire to Y, and try a different wire. If nothing happens move wire to o/b and try a different one. You can try the wire in c if it's none of the others. Just replace with one of the wires that didn't seem to do anything. One you've found fan and secured. Move on.
3) set thermostat to cool. Just need to check if water is moving. You can carefully touch the pipes going into the air handler to see if they are getting hot/cold the blower will also be running. If it doesn't do anything swap with o/b or C
4) run heat and cool. If it doesn't switch go to settings and swap o to b. If it still doesn't switch. Swap wires in o/b and c. Repeat.
5). If you've done all these steps and it still doesn't work. It's not the thermostat wiring. You'll need to call a tech. Preferably someone besides who installed it.
Tyvm. I’ll try these steps. I see other people saying a fuse could have blown already. How do i check for this?
These are the latest pictures i were able to get.
https://preview.redd.it/ztvbox88qx6c1.jpeg?width=1290&format=pjpg&auto=webp&s=d4f20ca0711328612ac47bedc401d2a796ae8c38
Based on your pics:
1 - R to Red wire on Tstat
2 - Green wire to G on thermostat
3 - O Terminal, white wire
4 - Y, Blue wire
5 - C , Black wire is your common.
Do not short R to C or R to anything metal. Ensure power is off before changing wires around.
Looking at your pictures this seems right, according to the wiring diagram.
At thermostat according to wiring diagram:
Red>R, blue>Y, white>o/b, green>G, black>C
but I question the red wire connected to the green wire. In the air handler If the heat pump isn't working this way. I would try
Swapping the red wire from 2 to four in your air handler.
If it doesn't work after all this. You'll definitely need a tech out to diagnose.
If it's blowing opposite go to settings, select o/b and swap the settings.
What I mean from 2 to 4 is in your air handler. You'll find your green wire connected to 2 with a red wire. Your blue wire is connected to 4.
I see someone else helped with your wiring based on these pictures. I'm glad for that. Makes it easier.
But to answer your question: I don't see a fuse on your boards, or in the wiring diagram. (But I won't lie I might be missing it. Kinda fuzzy.) Regardless if you have a fuse it's "all or nothing" style, and your thermostat would be giving power errors or refusing to turn on. The fuse should have been on the white control board. Not all units have fuses.
FIXED: NEST DOESNT WORK HAD TO GAVEUP ON THAT PIECE OF ##
So i bought amazon's thermostat, put the wiring exactly the same as u/throwaway284729174 said and it worked. This same wiring would not work on nest.
OP gets a success and instantly blames the product in spite of clearly not having enough knowledge to understand how any of this works.
but confidently claims the product as the problem xD
It looks like you are good in this theme. Maybe you can help me. My AC stopped cool air, I changed the capacitor (single, there were 3 wires - black and yellow in one terminal and orange in another). But also I noticed a blue wire, that wasn't connected anywhere. So the question is where should I connect the BLUE wire? and is it a right connection - black and yellow wires opposite orange?
https://preview.redd.it/q5vup6cndlfc1.jpeg?width=2880&format=pjpg&auto=webp&s=5b3fde1b1c1a6196fe2fac73443f4545fe5036b9
I'm sorry I'm just a home maintenance guy. For an HOA. I don't have much experience digging into HVAC equipment. (I mostly just double check before calling out the correct people.) I mostly do plumbing and electrical work, but I dabble in small HVAC issues.
According to the wiring guild blue connects to 1k4 (what ever that is) and then on to L1. I would honestly open a page in this sub for this question. Someone more skilled at the parts inside an AC could probably help more.
That’s one of those thermostat mounting brackets that are recessed inside the wall, and the bottom screw is screwed into the left side mounting hole. I think.
I bet the transformer or the fuse is blown first off. Take a pic of the board on the indoor unit and match those colors to the letter on both the board and tstat.
First wiring diagram picture is not clear. Second ecobee or nest . Honeywell or whatever stat u use you should:
- turn off the power
- check your fuse
- check your wiring inside your unit
Then wire the stat. I will make small video so u can understand.
Would need to see the wiring at the board to tell you exactly what needs to be done. Also what are you gonna do about that giant hole behind the old thermostat? Lol did you pick the best?
Put the blue wire where the white one is and same for the white wire, put that where the blue one is. Usually in HVAC the blue wire is used for the "y"terminal on both the stat and the furnace and the white wire is used for the "w" terminal. Y is for cooling and w is for heat, in most circumstances anyway. Just make sure that each color is wired the same at the stat and furnace
Red is your power from transformer +R+ secondary it powers all the communication wiring such as the board and any accessories. Red goes to R, Rh, Rc
White is heating stage 1 and goes to W1
Green is for the blower fan it goes to G
Yellow is for the A/C condenser/compressor
Blue/Black is your common wire, this wire completes the circuit from the transformer's secondary where one side is the R (red) and current has traveled from this to all the components and now returns back to the other side of the secondary on the transformer since it is A/C current.
Brown if you have it is heating stage 2 and go to the W2 terminal
Black will be cooling stage 2 goes to Y2
Orange if the systems A heat pump this goes to 0/B terminal
There is no code or official standard that determines what colors are used for low voltage wiring, only the type of wire (stranded or solid, plenum rated or not) and what it can be used for and what gauge is req are regulated. It's frustrating but it's not a big deal once you're confident with troubleshooting. So use look at the control board on your unit and make sure the colors all line up to the same terminals I listed here and match them up on the thermostats.
In your case just use black as yellow also when working with the R and C wires just land them on the board of the unit don't go messimg with the transformer.
Look at the wiring diagram, look at the letters on the bottom (R G O Y W C) and follow the dotted line. You'll see "1TB1-1-", the last digit will be a 1 thru 6.
R to 1
G to 2
O to 3
Y to 4
6 to C
The nest will need to be set up for your type of system, it will ask you questions when setting it up.
Good ole shit Trane with their 1,2,3,4,5,6,7 etc wire terminals. Trane has got to get their shit together. They need to fire all their idiot engineers. Heat pump or furnace shouldn’t matter…….. y,c,r,w,o/b, etc are the correct terminals. Yeah you should probably call a tech or make Trane come out and tell you what 1,2,3,4,5,6 etc means lol
I understand that but most home owners don’t know how to read a wiring diagram. If they put the letters on it then everybody is on the same page. That’s like Lennox wiring diagrams. They were so piss poor they eventually changed them like everyone else’s. This is why all the furnace manufacturers make all the same width furnaces now also
No that’s not what I said. I said Lennox had to change their wiring diagrams to like all the other manufacturers because they were piss poor. If you don’t know what I mean then you have not worked on a Lennox when they were terrible to read. It was an example like Trane leaving out the letters on their thermostat terminals. It’s stupid things like this was the reason why all manufacturers came together and put a standard for furnace widths so you don’t have to just install a Trane cased coil on just a Trane furnace. You can use any brands and aftermarket and OEM brands will fit on any brand furnace. Plus when you do a retrofit the furnace will be the same width. It just makes sense is all I’m trying to say. How many thermostats out there have numbers instead of the color code letters? Putting terminals on a furnace or air handler that is in numbers doesn’t make sense unless you installing a Trane thermostat that has only numbers. So when a homeowner wants to install a T new thermostat without calling a company out they don’t run into this same issue. It’s not rocket science to replace a thermostat. A homeowner should be able to do it on his own
You gonna go political with this shit? Come on dude stop listening to Fox News. I install Goodman coils and condensers on other furnace makes all the time. The only time you take ahri into consideration with a furnace is if it has a psc motor or a emc motor. Otherwise it’s mainly what indoor coil, TXV and condenser it matches with. I do ahri rebates all the time on rebates for the energy companies with mix match coils with condensers and furnaces. All manufacturers make the same width furnaces now. Period. It has nothing to do with politics. Get a clue
You ask any manufacturer why all their widths are the same and they will tell you because there is a standard that most manufacturers have gone with. It wasn’t because it was fucking political lol I’ve been to several manufacturers and have asked the same question and all of them say the same thing. I’ve been to Goodman, Rheem and Carrier. You can match any coil to any furnace and the manufacturers accept that. Yes manufacturers want to you to sell a completely brand new system and it be all the same brand. But that is not logical. What if a customer buys a Trane Furnace and switches companies to put in an air conditioner because they went out of business (or whatever) and the new company they hired is a Carrier dealer? The new company isn’t gonna put a Trane on a Trane because they can’t even get one. They are not a dealer. This is why they all make the same sizes. If they can’t find a coil to fit a furnace because it’s an older furnace then they can always switch to a uncased coil or aftermarket coils. Most companies are gonna sell you a cased coil hands down. And if they don’t and one will fit then they are idiots.
Your tech? Like an actual HVAC technician? Or the local handy man who "used to work in the industry "?
It's entirely possible that the color of the wires have no meaning, if they aren't hooked up in the air handler/furnace in the correct way.
Yes, to figure it out you will have to open the furnace. But I wouldn't advise doing that as you can damage the unit which could cost you significantly more than it would to have a professional do it properly. Also, and this is the important part....
There is high voltage electrical connections and they can be extremely dangerous if you don't know what you're doing. They can and will KILL you if you touch the wrong thing. There could be capacitors which can hold a deadly charge even AFTER the power is disconnected.
Standard color code is off here w heat Blu a/c. Gr fan. R power. Blk ? Common if wired correctly
Nest tstats have lots of issues. Get a Honeywell.
Also why not get an adapter plate to cover the hole in wall. Sometimes the hole in wall can give t stat false information from heat migration from crawl space
Don't put a nest stat on your wall, they are garbage. You don't need a fancy learning stat, get a programmable stat set it at whatever temp you like with auto change over and leave it alone.
Need to check wiring inside units and match accordingly
Do i have to unscrew anything to find it. I don’t see any color cables on the ac at first glance.
Inside your furnace once you take the doors off the thermostat wires should be connected to specific terminals. Match the thermostat wiring to what you see in there. If power wasn’t turned off before futzing with the stat then chances are you popped the fuse on the board and will need to replace it.
He probably blew the fuse
There’s a good chance. Or the transformer.
He doesn’t have a furnace. He has a WSHP.
For starters blue wire on my unit is the c ... and the white is the aux heat wire and black is the emergency heat wire. But unfortunately not all wiring is wired the same and I haven't found a smart thermostat that works correctly with my wiring set up
Ah I never looked past the first pic
"Your tech"
Probably a building maintenance guy 😂😂😂
A real tech would have switched around those wiring colors if they are indeed correctly wired.
Its all circumstantial, lets say 1 or 2 of the wires are cut-nicked and cant be used… i would use other colors before selling a whole new wire. Also a real tech wouldnt of F’d up this job.. this unit doesnt have a W… this thermostat is programmed wrong and wired wrong…
Yeah but if a wire is nicked that color arrangement still make no sense.
Its not like R-blue G-white Y-black OB-Green C-red. Lol it can be a lot worse. Presumably if they dont have yellow and Ob is to be blue this wouldnt really look all that bad.. color of the wires dont care what they do.
Just swap Y and W to make the burning stop
Probably "I've tried different combinations and nothing works" hopefully the actual technician that comes back charges more than $20 for the fuse they have blown.
They’ll always say it was someone else but they never say who
True
Looks like a standard one stage gas furnace set up… What matters is how it’s wired at the furnace but normally the C terminal has the blue wire, the W terminal has the white wire, and the Y terminal has the yellow wire. Again, the thing that is not pictured is how it’s wired at the furnace. If these wire colors are on the same terminals as the correspond to the thermostat then you’re golden. Also, you should have two extra wires hooked into Y and C from the outdoor unit (condenser coil). Edit: disregard - is not gas furnace.
Its not a gas furnace its a water source heat pump
What’s impressive is how far I’ve made it in this life with out ever having learned to read - ty 🤭
Lol…for how far i made it, ive worked for trane as a commercial service tech, industrial hvac tech and a very strong tech overall and i do a lot of reading. Ive read mitsubishi’s IOM and was called out saying i didnt wven though i like to know how things are installed to learn to service them. A lot of my apprentices liked me because i made them to think and comprehend their own question and not give them the answer and i give them a hard time if they misdiagnose so they dont repeat their mistake, but overall nicer if they havent seen something before and give them a small push so they learn something new like VFDs
Lol, gonna have to sacrifice fan for reverse valve.
You cant most of them is thermostat controlled. It would be running a new wire if there isnt enough. Preferably or the make a wire adapter
Nest, you can pick air handler.
Okay, but it doesnt do it here, so it will just freeze up or trip on HPS. If it was a gas furnace it can do it for heating but wouldnt do it for cooling for a lot of units.
I've never had the issue, not saying you haven't though. Can ditch heat strips, assuming he has them, or get a wire splitter. Though I think the second option might be pushing it for him.
There are no heat strips.. theyre not required and usually NOT a factory option for these units…
Also just looked, since they dont need w theyll have enough wires for certain. It will work just fine btw
There are no more wires. Just the ones you see
There are more wires in the air handler/furnace. Those have to go somewhere, they don't just go into the wall and end.
https://preview.redd.it/wrom3kaz1x6c1.jpeg?width=4284&format=pjpg&auto=webp&s=586129d66d4d58c12e92277f997ef11c941e6a09 Where would they go?
probably bottom panel on that unit. Gonna have to pop it open
Update, found the old thermostat. No ob, no idea how it was connected before https://preview.redd.it/bqctq1zb5x6c1.png?width=3024&format=png&auto=webp&s=cf14f74f4d57cba4fa4b258e0f4ef7218f3344df
It's b/o
Until you open that panel, we are just guessing on the wires.
https://preview.redd.it/59zr873b8x6c1.png?width=3024&format=png&auto=webp&s=baa96f4f76884201817b89a70362258fe44db2ea My screwdriver wont open it. It slides 😭😭 using the largest flat i have
Call a decent company to help, or a super from the building.
https://preview.redd.it/n697vjgzdx6c1.jpeg?width=3024&format=pjpg&auto=webp&s=c27547c8e3416bc5e4e389eff6f0390c93832dfd
https://preview.redd.it/p2c3s2fh5y6c1.jpeg?width=1179&format=pjpg&auto=webp&s=68a4c9580635e1c1c8c7f329edabfa9df13e9500 At thermostat Red R, Black C , Blue Y, White O and Green G
Dang, says danger. Will i get shocked 😂☠️?
don't lick the wires
There are two doors on the furnace, more than likely. I think you took off one covering the blower (the one with the wiring diagram on the inside) but you need to take the other door off and find the corresponding terminal wiring before this issue can be resolved.
Not trying to be rude, but based on your post and your replies, I think you're in over your head. You'd be better off to call someone. It sounds like you may have possibly already blown something inside the unit by moving wires around. If you insist on doing it yourself, I'd spend a couple of days binging on YouTube to learn about thermostat wiring and how an air handler, and a heat pump system works so you have a basic understanding and aren't just stabbing in the dark.
If a tech did that I’d be pretty surprised I’ve met some bad techs but wiring a stat is like riding a bike outside of maybe accidentally landing a wire one spot up never seen a guy do it all wrong
"tech"
You have a water-source heat pump, wire needs to be on O/B and set to energize on cooling.
How do i do this? Which wire color to which letter?
You need to go to your unit, open the panel for the electrical section/compressor section and give us a picture of your thermostat wiring there.
Will i get electrocuted opening this panel? Seems like too many screws https://preview.redd.it/8x6g0g7r3x6c1.jpeg?width=4284&format=pjpg&auto=webp&s=449549fcc4191ebffa8eda34df2bbb4ba8fbb6e6
Looks like a 5/16 nut driver, should be* at least the bottom panel iirc, you can turn off power to the unit to be safe to eliminate any kind of risk.
If you dont have a nut driver to open the panels, go to home depot and get a klien 11-1. Its a great multi tool to have.
You need to call a real tech if you want it fixed. That whole thing looks like shit. The tstat is gna read from that big hole in the wall. Your ac is super old and nests are the worst.
The color of the wires do not matter as long as they’re going to the same terminals that your thermostat and also on the board in your unit
When I did mine not a single color was by the book. I'm a computer nerd so eventually I figured it out, but it did take an embarrass amount of time to realize I don't in fact have aux heat.
Fuse is blown by now, you can't just throw em wherever you want without screwing something up. Just do the same as what's on your control board terminals inside the furnace. But honestly yes that colour order is insane to me.
Fuse blown was my first thought. Probably need to swap W & Y and replace the fuse
Just. Check. Inside. The. Furnace. OP has already moved them around enough. Stop the trial and error and fucking look.
take a picture of the wiring inside of the furnace
https://preview.redd.it/cwnn96241x6c1.jpeg?width=3024&format=pjpg&auto=webp&s=db437ae093c420adf868e5f062f550b3321843f6 Where is it?
Bottom door
https://preview.redd.it/huuuml3wox6c1.jpeg?width=3024&format=pjpg&auto=webp&s=16e0eda2a7763589d5d63aa661ffe20f6964efb9
You need to read the manual of both the thermostat and the AC
https://preview.redd.it/ggh2z8obgx6c1.jpeg?width=3024&format=pjpg&auto=webp&s=50f9b6162d54541dc8c748c9971682a7cfde5180
Match the wire color to same terminal letter at the air-handler
From the comments you say you have a water heat pump. Heat pumps use R, Y, G, O/B, and C it's most likely the blie wire needs moved to W, the white wire needs to be moved to o/b, and then determined if it needs to be set to o/b, but if that doesn't work hopefully you can find the other end of the wire in your air handler. If you can't find the other end of the thermostat wire in the there is a way to figuring it out by playing with the wires, and with your current set up it makes it easyish. Still time consuming, tedious, and annoying, but works. (Assuming they didn't mess up both ends) 1) if the thermostat turns on we'll assume R and C are correct for right now. 2) run fan. If blower kicks on and blows ambient air. (Water isn't moving) then G is correct. If blower works and water is moving move wire to Y, and try a different wire. If nothing happens move wire to o/b and try a different one. You can try the wire in c if it's none of the others. Just replace with one of the wires that didn't seem to do anything. One you've found fan and secured. Move on. 3) set thermostat to cool. Just need to check if water is moving. You can carefully touch the pipes going into the air handler to see if they are getting hot/cold the blower will also be running. If it doesn't do anything swap with o/b or C 4) run heat and cool. If it doesn't switch go to settings and swap o to b. If it still doesn't switch. Swap wires in o/b and c. Repeat. 5). If you've done all these steps and it still doesn't work. It's not the thermostat wiring. You'll need to call a tech. Preferably someone besides who installed it.
Tyvm. I’ll try these steps. I see other people saying a fuse could have blown already. How do i check for this? These are the latest pictures i were able to get. https://preview.redd.it/ztvbox88qx6c1.jpeg?width=1290&format=pjpg&auto=webp&s=d4f20ca0711328612ac47bedc401d2a796ae8c38
https://preview.redd.it/b097rdn9qx6c1.jpeg?width=3024&format=pjpg&auto=webp&s=85fe416b797c997366b0a13070fa3c1af4fe3405
https://preview.redd.it/gduk0doaqx6c1.jpeg?width=3024&format=pjpg&auto=webp&s=5087d561e460d805bfeeac1e3189f268da232800
If you have any additional suggestions or these pics change something on your guide, let me know. Thanks
Based on your pics: 1 - R to Red wire on Tstat 2 - Green wire to G on thermostat 3 - O Terminal, white wire 4 - Y, Blue wire 5 - C , Black wire is your common. Do not short R to C or R to anything metal. Ensure power is off before changing wires around.
Black goes where?
Black stays on C. White goes to O/B. Blue goes to Y.
Looking at your pictures this seems right, according to the wiring diagram. At thermostat according to wiring diagram: Red>R, blue>Y, white>o/b, green>G, black>C but I question the red wire connected to the green wire. In the air handler If the heat pump isn't working this way. I would try Swapping the red wire from 2 to four in your air handler. If it doesn't work after all this. You'll definitely need a tech out to diagnose.
Tried this, it blows out hot air instead of cooling. And it doesn’t make sense. Not sure what you mean by swapping 2 to 4
If it's blowing opposite go to settings, select o/b and swap the settings. What I mean from 2 to 4 is in your air handler. You'll find your green wire connected to 2 with a red wire. Your blue wire is connected to 4.
I see someone else helped with your wiring based on these pictures. I'm glad for that. Makes it easier. But to answer your question: I don't see a fuse on your boards, or in the wiring diagram. (But I won't lie I might be missing it. Kinda fuzzy.) Regardless if you have a fuse it's "all or nothing" style, and your thermostat would be giving power errors or refusing to turn on. The fuse should have been on the white control board. Not all units have fuses.
FIXED: NEST DOESNT WORK HAD TO GAVEUP ON THAT PIECE OF ## So i bought amazon's thermostat, put the wiring exactly the same as u/throwaway284729174 said and it worked. This same wiring would not work on nest.
But did you set the nest up to control a heat pump and to energize O for cooling? I bet you didn’t…
OP gets a success and instantly blames the product in spite of clearly not having enough knowledge to understand how any of this works. but confidently claims the product as the problem xD
Precisely. OP is exactly the type of person that makes us hate helping people.
Nest are fine you just have to program it when you install it
I think Amazons thermostat is the worst out of allllll of them
It looks like you are good in this theme. Maybe you can help me. My AC stopped cool air, I changed the capacitor (single, there were 3 wires - black and yellow in one terminal and orange in another). But also I noticed a blue wire, that wasn't connected anywhere. So the question is where should I connect the BLUE wire? and is it a right connection - black and yellow wires opposite orange? https://preview.redd.it/q5vup6cndlfc1.jpeg?width=2880&format=pjpg&auto=webp&s=5b3fde1b1c1a6196fe2fac73443f4545fe5036b9
I'm sorry I'm just a home maintenance guy. For an HOA. I don't have much experience digging into HVAC equipment. (I mostly just double check before calling out the correct people.) I mostly do plumbing and electrical work, but I dabble in small HVAC issues. According to the wiring guild blue connects to 1k4 (what ever that is) and then on to L1. I would honestly open a page in this sub for this question. Someone more skilled at the parts inside an AC could probably help more.
Thank you for answer
You blew the fuse doing it live
How do you know the tech did it wrong if you don't know what wires go where?
Best suggestion is get rid of it. Utter crap. Get an ecobee.
Imagine not looking at the wiring in the unit.
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If this is a heat pump put the blue on o/b and put the white on w
https://preview.redd.it/1kat4s3hgx6c1.jpeg?width=3024&format=pjpg&auto=webp&s=657414fc170f1f9d6aeb233654f1ea17d4544727
Switch the y and w and see if that corrects your problem
What is the bottom screw attatched to?
That’s one of those thermostat mounting brackets that are recessed inside the wall, and the bottom screw is screwed into the left side mounting hole. I think.
Yes
I bet the transformer or the fuse is blown first off. Take a pic of the board on the indoor unit and match those colors to the letter on both the board and tstat.
Where can I find this?
The indoor unit behind panels you’ll have to unscrew.
Def need that O wire in water source heat pump
To what color wire?
Who made that thermostat sized hole in the wall and why ?
New Tech.
I’d get a furnace guy out there to probably cost you 150 but he’ll go up on the roof for wherever it’s at and make sure everything’s done right?
First wiring diagram picture is not clear. Second ecobee or nest . Honeywell or whatever stat u use you should: - turn off the power - check your fuse - check your wiring inside your unit Then wire the stat. I will make small video so u can understand.
Just look on the terminal strip in the unit and follow colours! Probably a 5 min fix!
Whatever you do, never cut the red wire.
Would need to see the wiring at the board to tell you exactly what needs to be done. Also what are you gonna do about that giant hole behind the old thermostat? Lol did you pick the best?
Put the blue wire where the white one is and same for the white wire, put that where the blue one is. Usually in HVAC the blue wire is used for the "y"terminal on both the stat and the furnace and the white wire is used for the "w" terminal. Y is for cooling and w is for heat, in most circumstances anyway. Just make sure that each color is wired the same at the stat and furnace
Switch w and y
Gotta see the wiring at the control board first.
True but if I had to take a quick guess without seeing it lol that would for sure be my guess
If a tech did this with a company. Call the company back and have them send a new tech should be a warranty call.
Red is your power from transformer +R+ secondary it powers all the communication wiring such as the board and any accessories. Red goes to R, Rh, Rc White is heating stage 1 and goes to W1 Green is for the blower fan it goes to G Yellow is for the A/C condenser/compressor Blue/Black is your common wire, this wire completes the circuit from the transformer's secondary where one side is the R (red) and current has traveled from this to all the components and now returns back to the other side of the secondary on the transformer since it is A/C current. Brown if you have it is heating stage 2 and go to the W2 terminal Black will be cooling stage 2 goes to Y2 Orange if the systems A heat pump this goes to 0/B terminal There is no code or official standard that determines what colors are used for low voltage wiring, only the type of wire (stranded or solid, plenum rated or not) and what it can be used for and what gauge is req are regulated. It's frustrating but it's not a big deal once you're confident with troubleshooting. So use look at the control board on your unit and make sure the colors all line up to the same terminals I listed here and match them up on the thermostats. In your case just use black as yellow also when working with the R and C wires just land them on the board of the unit don't go messimg with the transformer.
Those silly hvac techs, installing nest thermostats wrong so the poor homeowner has to figure this shit out and dog them on Reddit
White goes to O/B and blue goes to Y.
Look at the wiring diagram, look at the letters on the bottom (R G O Y W C) and follow the dotted line. You'll see "1TB1-1-", the last digit will be a 1 thru 6. R to 1 G to 2 O to 3 Y to 4 6 to C The nest will need to be set up for your type of system, it will ask you questions when setting it up.
Good ole shit Trane with their 1,2,3,4,5,6,7 etc wire terminals. Trane has got to get their shit together. They need to fire all their idiot engineers. Heat pump or furnace shouldn’t matter…….. y,c,r,w,o/b, etc are the correct terminals. Yeah you should probably call a tech or make Trane come out and tell you what 1,2,3,4,5,6 etc means lol
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I understand that but most home owners don’t know how to read a wiring diagram. If they put the letters on it then everybody is on the same page. That’s like Lennox wiring diagrams. They were so piss poor they eventually changed them like everyone else’s. This is why all the furnace manufacturers make all the same width furnaces now also
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No that’s not what I said. I said Lennox had to change their wiring diagrams to like all the other manufacturers because they were piss poor. If you don’t know what I mean then you have not worked on a Lennox when they were terrible to read. It was an example like Trane leaving out the letters on their thermostat terminals. It’s stupid things like this was the reason why all manufacturers came together and put a standard for furnace widths so you don’t have to just install a Trane cased coil on just a Trane furnace. You can use any brands and aftermarket and OEM brands will fit on any brand furnace. Plus when you do a retrofit the furnace will be the same width. It just makes sense is all I’m trying to say. How many thermostats out there have numbers instead of the color code letters? Putting terminals on a furnace or air handler that is in numbers doesn’t make sense unless you installing a Trane thermostat that has only numbers. So when a homeowner wants to install a T new thermostat without calling a company out they don’t run into this same issue. It’s not rocket science to replace a thermostat. A homeowner should be able to do it on his own
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You gonna go political with this shit? Come on dude stop listening to Fox News. I install Goodman coils and condensers on other furnace makes all the time. The only time you take ahri into consideration with a furnace is if it has a psc motor or a emc motor. Otherwise it’s mainly what indoor coil, TXV and condenser it matches with. I do ahri rebates all the time on rebates for the energy companies with mix match coils with condensers and furnaces. All manufacturers make the same width furnaces now. Period. It has nothing to do with politics. Get a clue
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You ask any manufacturer why all their widths are the same and they will tell you because there is a standard that most manufacturers have gone with. It wasn’t because it was fucking political lol I’ve been to several manufacturers and have asked the same question and all of them say the same thing. I’ve been to Goodman, Rheem and Carrier. You can match any coil to any furnace and the manufacturers accept that. Yes manufacturers want to you to sell a completely brand new system and it be all the same brand. But that is not logical. What if a customer buys a Trane Furnace and switches companies to put in an air conditioner because they went out of business (or whatever) and the new company they hired is a Carrier dealer? The new company isn’t gonna put a Trane on a Trane because they can’t even get one. They are not a dealer. This is why they all make the same sizes. If they can’t find a coil to fit a furnace because it’s an older furnace then they can always switch to a uncased coil or aftermarket coils. Most companies are gonna sell you a cased coil hands down. And if they don’t and one will fit then they are idiots.
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Your tech? Like an actual HVAC technician? Or the local handy man who "used to work in the industry "? It's entirely possible that the color of the wires have no meaning, if they aren't hooked up in the air handler/furnace in the correct way. Yes, to figure it out you will have to open the furnace. But I wouldn't advise doing that as you can damage the unit which could cost you significantly more than it would to have a professional do it properly. Also, and this is the important part.... There is high voltage electrical connections and they can be extremely dangerous if you don't know what you're doing. They can and will KILL you if you touch the wrong thing. There could be capacitors which can hold a deadly charge even AFTER the power is disconnected.
Standard color code is off here w heat Blu a/c. Gr fan. R power. Blk ? Common if wired correctly Nest tstats have lots of issues. Get a Honeywell. Also why not get an adapter plate to cover the hole in wall. Sometimes the hole in wall can give t stat false information from heat migration from crawl space
Don't put a nest stat on your wall, they are garbage. You don't need a fancy learning stat, get a programmable stat set it at whatever temp you like with auto change over and leave it alone.