Honeywell Thermostat Installation and Wiring

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[@stevehetzel6205]

Zack. Many thanks. I watched and installed. Perfect! You saved me some bucks.

[@chris222233]

Utterly amazing!!! Straight to the point!!

[@alexsinclaire1504]

This video is so helpful!! Thanks for taking the time to selflessly help others

[@greenthum39]

Excellent video thanks for taking the time to make it

[@marmata8667]

Thanks The Best explanation about thermostats!! Thank you so much👍

[@miriangoutch9722]

Thanks for great video. Nicely explained....

[@kevinranders]

Thanks for the video. My folks attempted to install a new stat today but ran into alot of problems. Their old wiring is as follows: White - W2, Green - G, Red - R, Yellow - Y, Black X, Blue B. The new stat has L, Aux/E, G, O/B, Y, R, RC (jumper). They have a heat pump system.

[@kamichawatashe3173]

Thanks! This was super easy to follow and comprehend. As a side note I am a female and just turned 50, so if I can wire up a thermostat, you can do it

[@rtp4919]

Thank you so very much. My background is electronics, way back to when vacuum tubes where still in popular use. This is by far the best explanation of a thermostat, the wiring and function of the components. Now if the field techs would adhere to a consistent color code, life would be simple. I wish you would have included the color code as part of this excellent presentation. Thank you again.

[@cspark9186]

Yep, nobody seems to give the whole story. For single heat/single cool systems... "Typical" color codes... (W2/Aux > Orange >> Electric Strip Heat).... (G > Green >> Fan)... (W/OB > White >> Changeover Valve or Reversing Valve)... (C > Black or Blue >> Transformer Common)... (Y > Yellow >> Compressor)... (R/Rc > Red >> Transformer Hot). NOTE: Not all technicians use the same color codes The thermostate terminal connections match the terminal connections at the air handler. If the new thermostat is not wired like the above, you will need to check the connections at the air handler and use the same color coding. Make note of the changes.

[@taylorrummelt5279]

I have an orange wire and a white wire, do I need to put the orange in the O and the white now in the W2 slot?

[@teddymoore6608]

do you have the option to change o/b output? how does the thermostat know if it needs ti energize on cooling on on heating?

[@greyholcombjr.9623]

My 1st two heat pumps at my home were Rheem/Ruud. The reversing valve energized in the heat mode. Had a new Trane installed and the installer mentioned the reversing valve would now be energized in the cool mode. I agree with him that all brands of heat pumps should energize the valve in heat mode. Then, if the valve malfunctions, you could switch over to emergency heat until you could get unit serviced. A malfunction of a R valve that is energized in cool mode will leave the resident without AC. There is no emergency cool on a heat pump .

[@zacktalksshopbside]

Good point. I will say that a reversing valve failure is pretty rare, though.

[@wiisuperstar1]

Hello. How do I set a fan time delay on a Honeywell RTH6580WF thermostat?

[@Ibelieve218]

my gas furnace has two wires w and R should I remove the jumper?

[@drummerdem50]

Great video Zack , keep them coming...

[@zacktalksshopbside]

thanks, I will

[@AvaZ825]

What size flat edge screw driver would one need for this thermostat?

[@EminHVAC]

Once Again Great Educational Video Zach.

[@zacktalksshopbside]

Emin HVAC Thanks Emin

[@btvabowhunter]

Can you remove the AUTO setting? (On the Honeywell 5000)

[@TriniDB]

What if I have both a O and B wire? Do I just leave the B wire out? Thanks

[@harrydickson4575]

Another great one Zack

[@zacktalksshopbside]

Harry Dickson Thanks Harry

[@xXNewfie709Xx]

Can a thermostat like this be used for a baseboard heater?

[@keithhoward8651]

Good Job Zack.

[@mssullivan4067]

I just noticed the blue wire is hooked in the "y" yellow spot. Been working for yrs until now and i just noticed. Is that common? The problem I'm having right now is my thermostat says cool when it's turned on heat, but heat is coming out. The set temperature isn't correct though. I have no idea what the heat is actually on. Once it gets warmer enough, i just turn it off or it will continue running bc the temperatures never match up. Possible problems?

[@BillSheley]

I am trying to upgrade an old Honeywell T7350 commercial tstat with a new Wifi enabled TH8321WF . The wiring requirement appears to be different on the new therm. The old therm is wired as follows .. Orange Wire -> Y2 Green Wire -> G Yellow Wire -> Y1 Red Wire -> Rc (jumped) White wire -> X My question is... what wire do I use to power the new therm on the C terminal? This therm is part of a system that is in a 10,000sqf corportate office. It is only used for AC. No heat. Our HVAC provider wants $3400 to replace 4 thermostats. That seems kind of insane to me as its just 5 wires. Any help would be GREATLY apprecaited!!

[@mattmetzger6407]

I have a ? My landlord just installed this in my apartment n now I don't have cold air n my outside fan isn't running my heater is gas are u able to help me fix this on my own

[@alanesmonde1365]

I am trying to install a RTH2300B thermostat to replace my old thermostat....I have fou4ires from the old thermostat. They are R, W, G, B but all the instructions show 5 wires. On my central heat and air the yellow wire is not connected to anything and coming out of the wallo there is no yellow.....where do I connect the B wire on the new thermostat

[@MaxItUpwithMarta]

I can't get the r and rc screws loose.

[@jm69charternet]

Hey Zack wanted to ask first off great video but I saw on a video a few months ago on some wannabe guy wiring up a thermostat said his old one the batteries made his old one short out can that happen? if you use batteries and a common wire.

[@MsBuzzus]

I can't get my heat to stay at a certain temp.. keeps going lower that what we set it at,, I put it on 72 and it goes back to 68 Can you tell me what could be the problem

[@staciem9038]

Hello, I’m replacing my old thermostat with the rth2510b . The wiring on the back of the new thermostat is labeled B,O, G, Y , W/Aux, Not Used , R, RC. My wires out the wall are White, Yellow, Green, Red. Which would I connect to the correct place? Thank you

[@clarksteveb]

If you're using a Heat Pump, are the wires still physically inserted in the top, or in the little slots under the screws?

[@robertvanhoorn2166]

The wires can only be secured in the top screw openings. The slots underneath are where the leads plug into when the thermostat is put back together.

[@stevencaple5709]

Will a 24v t-stat work with 12v?

[@ronaldmccloudjr.6160]

I recently purchased a new Honeywell 2042 thermostat (2 of them for two separate units) both thermostats R and RC connectors won't unscrew for me to connect my Red wire...🤔 what's going on with it...help me out here

[@069fastguy]

Plssssss help all I have is a black and white wire and there is no labelling on the wire. Where do the wires go too

[@chrismange7663]

great video. thanks.

[@jamespresutti8666]

I have a w1 and w2 wire. The directions said call a service pro if this is the case.. What is going on here?

[@dered5970]

Very good. Thank you much.

[@haydenosborne5348]

hooked up same exact thermostat I have a heat pump. first ac was blowing hot and heat was blowing cold now only heats

[@MrInsaini]

Good video Zack.

[@zacktalksshopbside]

thanks

[@inultus1]

I am going to replace an old Dayton thermostat, it has no C terminal, but I'm installing a new Honeywell which I would imagine does have that terminal. This is standard gas furnace and central A/C. I see that I have one wire (black) coming from the wall which was not hooked to anything before. How would I find out if I should connect that to C? Thanks much. ps, I just used my voltmeter and I show 15AC going from R to C wires. R to Y is 27AC.

[@zacktalksshopbside]

Get a battery Stat and you will not need c. You get 15 volts because the black wire is disconnected or not the common on the other end.

[@inultus1]

+Talyn875 PRO You are totally right I traced it back and it's not hooked to anything at the other end. Can't I just now hook that un-used wire to C on the transformer and also on the thermostat? Obviously with the power off, but do you need to do any sort of power drain from the transformer to discharge it after power is off to make sure it's safe? Thanks again. I haven't even picked up the new thermostat yet, just planning in advance.

[@zacktalksshopbside]

You can do that for sure. It's best, that way you don't have to worry about the batteries dying

[@mohammedhassen3789]

How to setup Honeywell R6 app and connection to my iPad android phone

[@chadj79]

I just moved into a house and I believe that a new thermostat was installed right before I moved in. The fan won't shut off even if the heat and ac are off. Is there a possibility that a wire is installed wrong, or something else?

[@graucho12]

It is possible that a wire is jumped from R to G (blower tied directly to power). Sometimes DIYer's get bad advice from Home Depot staff. There would be no reason to jump R to G because that would permanently energize the fan causing constant running of the blower, but it could be done. Take TStat off and look for a wire that is plugged directly from R to G. If so then the blower is jumped on.

[@waynecox8371]

Will this thermostat work on a 8 wire thermostat. I have a Trane WeatherTron thermostat,and the unit is heat pump with electric back up. The wiring on the unit now is Green wire to G terminal, Orange wire to O terminal, Black wire to X2 terminal, Yellow wire to Y terminal, Black wire to T terminal, Red wire to R trminal , White wire to W terminal, Blue wire to B terminal. If not which Honeywell unit would you use. Any help would be appreciated.Thanks for your time

[@zacktalksshopbside]

You can get a tcont stat made for trane or drop the t connection

[@RobertoRodriguez-ce3iu]

hi i have a honeywell Programmable Thermostat RTH221B1039 and my house have 4 cables , white , yellow , and 2 red cables one person remove that cable and i don't know how i connect the cables back , the connector have the letters B, O, G, Y, AUX, n/u, R, RC, do you know how i connect the cables back without problem

[@caressab8436]

in the video for a Goodman you stated O would be energized for cooling. and not for heat. if there is an Orange wire in the O spot what would a white wire be? auxiliary heat ?

[@zacktalksshopbside]

Aux/e or w2

[@genesmay6589]

In the N.E. on an oil or gas boiler, two wires only, you would remove the jumper and connect one wire to W and one to R.

[@Ibelieve218]

now I have a gas furnace with same w and r should I remove the jumper?

[@GurpreetHira]

Yup usually W and R *for two wire millivolt system* (left the jumper with R2 in mine) and itll just create a close circuit on a millivolt system when set to heat and a temperature is lower than set point, causing the heater to turn on.

[@gregbernal3237]

I have an old house. Furnace is hooked up to the thermostat. 2 wires only. Unfortunately the wires came unplugged and I am not sure which 2 should be hooked up. Any suggestions?

[@famousforever8556]

Greg Bernal of you only have 2 wires, what am I missing? If you are asking where to hook them up without knowing which wire is which, run a voltage detector on each wire to find out which one is hot. They are only $5.

[@rw3al]

so what color go yogether on tHE ob HEAT COOL REVERSING RHEEM UBIT

[@johnrussell2380]

Great video for anybody that doesn't know anything about how to wire a thermostat, I wish I had it when I was first learning about them. But I am trying to find out what is wrong witha thermostat from the same series which is the TH1110DV I run the maintenance shop for our Apt. complex and have been replacing old thermostats with said thermostats, and I have run into a problem I've never seen or had happen before and can't seem to find anyone or anywhere that speaks of it either. But I've'had it happen twice, both with brand new thermostats and both with the same Apt. which makes me think that something is wrongwith the system that's causing it to happen, the first one I installed had been working just fine for at least a couple of months, when the tenant complained her heater wasn't putting out any heat even though the fan was blowing, which was nothing new it usually meant their filter was probably dirty and had triggered one of the many limit switches and needed to be reset after changing the filter. Only this time an additional problem had occured, when I went to turn up the thermostat and get it to call for heat it wouldn't do anything in heat mode but show the current temp, but when switched to cool it worked just fine move the switch back down to heat nothing but current temp. tried everything removing batteries, installing backwards for five seconds nothing in heat mode, so I took the cover off of one I had just installed in another apt. and stuck it on the sub-base of the one with the problem and woolah got hewr heater running and then the next day the tenant she's not getting any heat again and upon checking it out the same dam thing had happened it did nothing but show the current temp. in heat mode but worked as it is suppose to in cool I've looked through the manual for the heater and the manual for the thermostat, googled it, but no mention of that particular problem nowhere not even on this site, can anyone tell me what's going on or maybe an idea where to start looking. Sorry this was so long but I had to explain it in detail so youy would know exactly what's going on. thanks

[@mruiz563]

what aboit the blue wire were would that go to?

[@scrambler350]

2nd stage cooling

[@fransiscoscaramanga674]

nice upload, thanks.........learned a lot.

[@zacktalksshopbside]

Thank you

[@jhhvacplumbing1944]

Thanks Zack

[@zacktalksshopbside]

justin henning Thanks Justin

[@kimberlysurrett1829]

WHAT WOULD MAKE MY BACK LIGHT NOT COME ON ON MY RTH2300/RTH221 BRAND NEW THERMOSTAT. REALLY WEIRD. BRAND NEW BATTERIES ALSO. PLEASE HELP. ITS SUPPOSE TO BE A 14 SECOND BACK LIGHT

[@jkls369]

So can I connect my white wire and my orange wire to the same terminal? White is for my conventional in Orange is for the heat pump is that correct?

[@zacktalksshopbside]

Yes, you would connect white for conventional and Orange for heat pump (most of the time). You then tell the stat what system you have in the set up process.

[@billyjoe3014]

How do o know if my Unit is a heat pump??

[@CarlosArruda77]

Hi. Being USA I take it we're talking income supply is 110V. On the Y connection, you mention you get 24V output.What generates these 24V? Does the thermostat does the steeping down of the voltage from 110V to 24V? Many thanks.

[@graucho12]

Step down transformer is not integral in the TStat. It is wired in series before the TStat as part of the low voltage control circuit. I usually find them inside the air handler next to the control board.

[@graucho12]

These systems will usually be running a step down from 240VAC to 24VAC. They are getting power directly from the distribution panel. If it is running 110 volts (which is rare) then it is plugged to a wall outlet like an appliance.

[@daves9043]

My old thermostat had a separate wire for o/b and w but my new Honeywell thermostat has one terminal for "w-o/b". Any suggestions on how I should connect the new thermostat?

[@zacktalksshopbside]

+Dave Shute you put it on the same terminal and designate the function during the set up

[@robertvanhoorn2166]

Thanx, I had the same question, and Honeywell had absolutely no good answer. All I got, after waiting on hold for 30 minutes, was an equally baffled rep in a different country reading from a script.

[@SombraLocs]

Why do they put "L" on the heat pump hook up?

[@RobbieBryant1965]

Emergency Heat On L Energized. Goes to the positive side of a relay. Relay protects the heat strips.

[@deltapoet]

I am in an old house. Wires to the thermostat are two red wires and two white wires. How can you determine which is suppose to green or yellow?

[@zacktalksshopbside]

You would have to use an ohm meter to isolate and narrow down what is what

[@magnumforceoutdoors9665]

if there is an X wire on my old thermostat what would that go to. the instructions on my RTHL3550D said not to hook it up. my fan will not turn on when on auto mode have to it on fan on all the time.

[@naughtius_maximus8243]

Magnumforce did you go through the menu and actually change the settings to your system type?

[@HereWeGoSteelers]

Did you find out where the wire going to X on the old thermostat would go on a newer model? The old thermostat we have also has a X screw but the newer one doesn't. Thanks

[@NinjaTruther]

Great video!

[@zacktalksshopbside]

thanks

[@paporeyes9084]

Zack HVAC

[@David-cn8pc]

@@paporeyes9084 D3 certainly

[@zacktalksshopbside]

btvabowhunter yes, during programming

[@RINEYMOTORSPORTS]

I know this is going to sound stupid but I got mad and smashed the thermostat in my hallway I went out and picked up a new one I put the white to W the red R the blue to b the green to G and the yellow to y now when I turn on the heat the outside unit wants to run and no it's not a heat pump but when I kick it to AC the outside unit does not come on just wondering if you could give me any idea what could be wrong

[@DL30Creations]

Switch the blue wire to the C slot

[@Brian-cx7en]

Nice video.

[@zacktalksshopbside]

thanks

[@kristiejim]

You didn't explain the L for heat pump. I have a black wire there and cannot find out where to put that wire on a NEST I want to install? Any ideas? thanks

[@nancyayala4125]

ua

[@famousforever8556]

Jim peters wifi thermostats are a completely different animal. Google is your friend.

[@bobpike4706]

@@nancyayala4125ppl

[@biblebloopers946]

I don't understand with the o/b. It's going to be either energized or not. How are they sharing the same terminal? When it's in Cooling, O needs to be energized. And in Heating B needs to be energized. So how does that work when they share the same terminal? Are you supposed to go into the thermostat on the digital part and program that part of it?

[@zacktalksshopbside]

That part is cleared up during the set up process. Different terminals will be energized based on the type of system you program during set up.

[@biblebloopers946]

@@zacktalksshopbside Oh i see. Thank you. Love your videos

[@andrewtatum9474]

very nice

[@zacktalksshopbside]

thanks

[@TheScooby43]

When my thermostat cuts off the blower keeps running I can cut the unit off and it'll stop it's a Maytag air and heat pump honey well thermostat

[@JoseDiaz-mb7oi]

👏🏽👏🏽

[@awatchman5945]

You never mentioned "L" or color code. Which is the info i need for my 7 out of 8 wires used for my heat pump. WHAT IS L ?

[@akbychoice]

A Watchman L appears to be to send the signal for Emergency heat.

[@VICTORHG2350]

I got the same thermostat 2years ago and last year it didn't work right it use batteries for the digital numbers and last year it keep killing the batteries I had to changed every day

[@noahoyeah]

Zack! Came across a fem4p3600a ahu white wire on white condensing unit and ahu to L terminal. Thermostat SN12I How is that possible. Lol.

[@zacktalksshopbside]

Not sure. L was a diagnostic terminal on some units (like York). I’d have to investigate further.

[@travislaw9426]

what if their is no green wire

[@anantharajanantharaj6545]

please send you terminal

[@jong5832]

i wired everything jus right but cant get the fan to turn on outside...any suggestions??

[@zacktalksshopbside]

were you having issues before

[@jong5832]

no i jus went from an old mercury janitrol to a honeywell thermostat the heat seemed to work but the fan outside wouldnt run at all....i put the old one back on and now the mercury seems to be out and way off....

[@jong5832]

do i need to keep the jumper in both the Rs because i took it out when i installed it???

[@scrambler350]

Yeah, the heat won't work without that jumper, had a few calls on these t-stats because the installer let the jumper fall out and the heat wouldn't come on...same for cool, both 'R' terminals need to be powered in a Heat/Cool application.

[@ALISA0215]

my ac is set at 72 degrees. Im trying to take that off

[@eddieduque9371]

Jesus man, All I have is a Line (black)and a Neutral (white)where do I connect those??

[@mohammedhassen3789]

My kind of videos

[@hp1799]

Can you please help me out I only have two wires a W -R - RC and And I just bought this thermostat what should I do

[@rockslide4802]

Why don't you actually show us some wires?

[@HarryIrvinecommericalacrepairs]

make sure that you have the wiring connections correct: R=RED=POWER C=BROWN=COMMON Y1=YELLOW=1ST STAGE COOLING W1=WHIT=1ST STAGE HEATING G=GREEN=INDOOR FAN

[@jlamblpn2012]

Thank you

[@biblebloopers946]

Wait did I miss what the L terminal is?

[@zacktalksshopbside]

L terminal is a rarely needed troubleshooting signal. As a former HVAC tech I only saw a handful of units in 20+ years that even had the terminal.

[@chlowery23]

what about the L?

[@zacktalksshopbside]

+King Dado diagnostic signal found on some equipment

[@melodycollette3040]

I've only have two wires

[@JorgeMendoza-gm1xz]

Why you don’t explain what a heat pump unit is? So people that don’t know nothing about diffidents types of units.

[@knighth2o853]

BECAUSE PEOPLE WHO DONT KNOW WHAT A HEAT PUMP IS PROBABLY ARENT WATCHING THIS VIDEO LOL. Or they have a heat pump and already know what it does.(sorry for caps lock im too lazy to change it)

[@dynjarren5454]

But you dont actually wire it. Hmm

[@angelalvares1818]

L..Miss inf..

[@zacktalksshopbside]

L is a diagnostic signal not used on most systems

[@youpattube1]

Useless to me. You kept saying, if it is not a rheem blah blah, if it is other than rheem blah blah. I have a rheem and didn't follow you at all.

[@lightupfun4972]

This video is typical of 99% of KZbin do it yourself videos. The producer talks in expert language! Singing to the choir. I don’t get it. Experts don’t need help. Average, non technical people are the ones turning to these videos and yet the video is way over the heads of the very people it’s supposed to help. This one is just like all the rest. I was lost in the first minute. Why bother going to the trouble of making the darn thing in the first place? If you cannot “dumb” your presentation down to the level of your viewers, simply ask an average person to do the video for you in language your viewers will understand. Thank you.

[@greyholcombjr.9623]

This video is no more complicated than most plumbing videos for the average Joe. Hot is on the left... Cold is on the right.