Having problems with your Air Conditioners ?

Want to replace a T874R1434 thermostat with aux heat with a visionpro th8000. Have a blue wire connected to the B terminal on old thermostat and what looks like a brown wire connected to the X terminal on old thermostat. Where would these be connected on the visionpro th8000 thermostat.


Answers :

Its kinda difficult to know exactly what the wires could go to considering its all in the way the technician decided to hook them up and everybody has different ideas. I can tell you the most common use of the colors and see if that helps. Depending on how many wires your system has,
Red=Power
White=Heat
Yellow=Cooling/AC
Green=Fan
Blue=Common/Ground
Brown=Heat

Black and Orange wires alternate a lot with different HVAC techs, but usually go to a heat pump system outside.

The best way to get a grip on what wires go where is to look inside the furnace and see where they go. If you have a electrical board, it gets a lot easier, and the back of the furnace door usually has wiring diagrams that are pretty up front about the wiring. Just keep in mind that the wires could have been changed from the thermostat to the furnace, but you can usually tell if the wires seem different. Hope this helps some and good luck!

Repair Help & Product Troubleshooting for Air Conditioners
You need a second opinion or clarification ? ask it in the comment box OR you can Ask Your Own Question

Tips for a great answer:

  • Please provide as much detail as possible as this will allow our members to better understand and respond to your Comment
  • If you need clarification, ask it in the comment box
  • It's 100% free, no registration required

Suggested Questions/Answers :

It is recommended you read all this kind of situations

Want to replace a T874R1434 thermostat with aux heat with a visionpro th8000. Have a blue wire connected to the B terminal on old thermostat and what looks like a brown wire connected to the X terminal on old thermostat. Where would these be connected on the visionpro th8000 thermostat.


Its kinda difficult to know exactly what the wires could go to considering its all in the way the technician decided to hook them up and everybody has different ideas. I can tell you the most common use of the colors and see if that helps. Depending ... Ruud UBHC Air Conditioner

LENNOX HS26-048-3P Installing Honeywell wifi thermostat. C terminal on control board was connected to X on the old thermostat. The X terminal wire on the old thermostat is connected to the C terminal on the control board. I used this wire to connect to the thermostat C terminal and now the compressor fails to come on. The slow flashing lights indicate the thermostat is asking for cool and the fan comes on, compressor does not come on.


... Air Conditioners

Wiring compressor Replaced defective fan motor on my a/c unit. Old motor had three wires: black, yellow, brown. New generic motor has black, white, brown, brown w/white stripe. This new motor came with a new two terminal capacitor. Old cap. had three terminals. The black and white wires from motor connect across the line voltage and the other two wires connect across the capacitor. After install and trying to run the unit, found that compressor turns on for about two seconds and shuts down, but


The two terminal cap is only for the new fan motor. Connect the compressor wire back where you found it, on the 3 terminal cap. It's the terminal marked, "herm". The "common" terminal on the 3 terminal cap must still be connected to one side of the ... Carrier 38CKC036 Air Conditioner

I am replacing a white-rodgers thermostat with a blue wire connected to a terminal label '4'. The only other reference to a '4' terminal is in the honerwell installation manual which says that if there is both an r and 4 terminals on the old thermostat it was incompatible. I returned it for a ritetemp guaranteed to be compatible though I'm still not sure what to do with the blue wire. on the old thermostat the red wire goes to rc, the yellow to y, white to w, and green to g. Does blue just go t


Blue just goes to B ... Air Conditioners

Installed a new Filtrete thermostat on a new Carrier high-efficiency furnace. I followed instructions exactly. It doesn't work. What did I do wrong? Furnace was installed in December. Broom handle cracked faceplate of Carrier thermostat and rendered it inoperable. Installed new thermostat according to instructions. Connected white wire (labeled V+ on the old Carrier thermostat) to the W terminal on the new Filtrete thermostat. Connected red wire (labeled Vg on the old Carrier thermostat) to the


Thanks for the update, regarding the thermostat.Hope replacing the thermostat resolves the problem.Keep updated.Thanks.Helpmech. ... Air Conditioners

I have a Janitrol Heat Pump Thermostat HPT-18-60 and need assistance connecting my new Honeywell RTH7500D thermostat I have a Goodman Heat Pump System Indoor Unit Model#AWB24-05C REV D Outdoor Unit Model#CPLE18-1 Here is the wiring of the old thermostat Y-Yellow Wire G-Green Wire R-Red Wire O-Orange Wire W2-White Wire E-Blue Wire C-Black Wire Where should each of these be connected to the new thermostats terminals?


... Air Conditioners

I am changing an old circular Honeywell AC thermostat to a new Honeywell VisionPro TH8321U thermostat. There are two wires coming from the old thermostat and I want to know which terminals do I attach the wires to on the new thermostat?


Ac only?r and y ... Honeywell Air Conditioners

I currently havea honeywell thermostat model# T8112D1005 (1) 0347 PF2A and a replacing it with a Honeywell TX1500E. My only issue is my old thermostat has a "R" wire that was connected up to it and my new unit only shows two options "RH" and "RC" it does not have an output of only "R". My question is where do I hook up the wire marked "R" from my old unit or do I even hook it up? The instructions mention if replacing a TM-11 to tape off the R wire and hook up the B wire to the B terminal. Im nit


... Honeywell Air Conditioners

Thermostat wiring I have a Frigidaire Model R4GA FWA and Central A/C system. I am trying to replace the thermostat with a programable Hunter model. I do not have the original wiring diagram and the old thermostat is no help. The wiring colors I have is Green, Red, Brown, Yellow, White and Orange-(not used). The terminals on the new thermostat are RH, RC, Y/O, W/B, G, and Y1.


Your best bet and where i would start is to identify where the coulors are conected at the fernace. in the industry we use standard wireing coulors wher green is g for fan and red is rh=switched trans power for heating . rc=switched transformer pow ... Air Conditioners

I recently purchased a Honeywell RTH2520 thermostat. Our old mercury thermostat only has 2 wires, red and white or red and black. The new thermo has terminals Rh Rc W Y and G, with a red jumper in between Rh and Rc. Where do I connect the wires to? Do I have to take out the red jumper? Or leave it in while connecting to Rh and W...we have no AC


Use the RH & W terminals. You cannot connect it backwards so it's a breeze. ... Honeywell Air Conditioners

"i'm replacing my Rheem RBGC 08KA FAU blower motor. My dayton 3lu83j 4 speed motor has white, black, red, yellow,orange, brown, and brown with stripe wires. My old westinghouse motor has only one brown wire, a blue and yellow (both taped capped and not used). do i leave the orange, yellow and brown with stripe unused". Or do i also connect the brown with white stribe to the shared terminal on the condenser.


There should be a wiring diagram on the side of the new motor.The brown and the brown w/ white go to the new capacitor you should have bought with the motor.The black and white go to your L1 & L2 power source. The remaining wires must ... Dayton Air Conditioners

I have a carrier 38YKC036300 heat pump with an electric furnace. I am attempting to install a new bryant T6-PRH thermostat http://www.catalog.bryant.com/wcs/proddesc_display/0,,CLI1_DIV42_ETI4641_PRD1583_SIT70,00.html. The wires dont exactly match up with my old existing thermostat. My existing thermostat has the following connections: W2, C, R, G, E, O, and Y. My new thermostat has Rc, Rh, W/W1, G, Y/Y2, C, O/W2/B, Y1. Please tell me which wires go with which terminals on the new thermostat. P


Old Tstat New Tstat\015\012R Jumper Rc & Rh\015\012E W/W1\015\012G G\015\012Y Y/Y2\015\012C ... Carrier 38CKC036 Air Conditioner

Thermostat Connection ________________________________________ I just purchased a rheem rqpm series 4ton packaged heat pump and a honeywell pro th4210d thermostat. I had 15 kwatt heat strips installed in the heatpump as I live in norther florida where the temp might drop to 20 degrees occasionally. I am unclear as to how to connect the thermostat. The wires coming from the heatpump unit are red, yellow, blue, green, white, and brown. The thermostat terminals are as such: E Aux Y G O L R B


Jumper E to Aux, OR B + O, G--green, R----red(power), & C--------common. w2---------white, Y.....Yellow and finally the Brown-----------PRCrossed my fingers too & go for it. worst is a warning hum &/or sparking one one terminal whic ... Air Conditioners

Ruud UPNE- 036JBZ 2 years old (outside unit) Ruud Acheiver air handler 1 year old inside unit... outside unit will not come on. voltage (120) ready at contacts. push manually and it comes on. yellow wire and brown wire go to board. no power on these when inside unit is running. power bill has doubled......must be running off heater coils? What would be the next thing to check. I did look at thermostat seems to be working normal. Can't get knowledgeable help.


... Air Conditioners

I tried to replace my digital manual Honeywell thermostat that is only 6 months old (new construction) with a programable thermostat. I followed the instructions marking the wires and connecting them up the same way. There was one wire "C" wire that the old thermostat connection said was optional with batteries that there was no place to connect on the new thermostat. I taped it off and left it off. The new thermostat with batteries powered up but the AC would not respond, nor the fan, nor t


Your "R" terminal is basically your "hot" and your "C" terminal is basically your "neutral" to simplify explanation. The Furnace supplies the "R" power to the thermostat and then depending on what wire the thermostat sends the power back on determine ... Honeywell Air Conditioners

5 ton carrier. we changed the condenser motor and marked where the wires connected. Old motor had yellow and brown to capacitor. New motor has an extra brown wire with white stripe... I connected it the same way as the old one without using the extra wire.... didn't work. Advise how to connect the new 5 wire motor... red and black wires I'm confident are connected correctly.


The best way to wire that motor is to connect a separate capacitor to it. The brown and brown w/white stripe go to the capacitor. The black and red wires go to the contactor. ... Air Conditioners

I have installed a Honeywell PRO TH3000 thermostat to my Zoneline AZ38H15DABM1. With the R and Rc terminals on the thermostat connected by jumper the zoneline runs @ 5 mintues. I see in the manual No common busing allowed. I need to know the exact wiring - the exact terminal to use for the different colored wires on the zomline and the exact terminal to usefor the differnt colored wires on the thermostat. Of course, they are marked and all wiortes are connected as the diagram says by color code.


Everything is wired right as long as the jumper is there. Put your unit is only a single transformer model and not a double. So that is where your issue is. I would as need to know the colors that you are using for the wiring. So if you can get that ... GE Zoneline AZ38H12DAD Split System Air Conditioner

I am installing a totaline progammable thermostat, the old one is a rheem, i hooked the b wire to the b terminal the r wire to the r terminal the g to the g terminal and the y to the y terminal the e l and o were not used, my problem is the old thermostat had a w2 and a x terminal the new one has aux and c which wire goe to which?


First off, make sure that the wires you are connecting at the thermostat match the circuit board of the unit. It is good practice, but not always followed to do a "1 for 1". To answer your question, W2 is simply when there is 2-stages of heating. ... Air Conditioners

Im changing an old honeywell thermostat with a new honeywell thermostat. the old on has wires 4 wires connected to 4 screws C,R,G,W but the new thermostat has a place where the wires go which are Rh,Rc,W,Y,G. will i be able to connect the new thermostat?


Yes, I believe that you will be fine. If the original wiring is correct then I have listed the basic wiring below. As always read the directions and make sure the wiring matches your system.Red wire = Rh (24v power, should have an exsi ... Honeywell Air Conditioners

The thermostat has one red wire and one white wire. The white is nt connected to anything. What should it look like? I'm freezing!!


A typical wiring set up for central air ... Air Conditioners

Need to change a broken blower motor in RUUD central air unit. Old central air blower motor (GE electric) was connected with brown and orange wire to 15 MHD capacitor. Another orange wire from central air unit connected to orange motor wire on capacitor. Black wire from motor (Hi Speed) connected to central air unit. Blue and red wires not connected. New motor is an AO Smith FD6000A. Has Black, brown/white, brown, blue,yellow,red, white and black wires. Need to connect to a 5 MHD capacitor. M


On the motor should be a diagram detailing the wires. brown white goes to either side of the capacitor and brown wire to other side of capacitor. hi speed goes to normally open contact on the indoor fan relay and the wire designated common on the mot ... Air Conditioners

I have a Rheem Gas Furnace with an old analog thermostat (Wires conneected to terminals R and 4 for the thermostat). I went to install a Rheem digital and programmable thermostat and it indicated that it would not work for that wire configuration (Instructions indicated that the thermostat would not work with wires to the #4 thermostat terminal). Is there a setting on the furnace circuit board I can change, or is there a digital, programmable thermostat one can use on this unit - Model RGDJ 12EA


If you have 2 wire at thermostat Terminals at furnace that the thermostat wire attach to should be R & W if your new thermostat has R & W terminals is should work, an easy thing to remember is the red wire on R the white wire on W. If 4 wire ... Air Conditioners

I have a Vokera Compact LE with a Honeywell Room Thermostat it has two wires connected Red and Yellow and an earth wire. I want to replace the Room Stat with a Sunvic TLX RFP calling for volt free connections of the looped terminals of the boiler to Common marked L In and normally open contact marked SL on. The existing Honeywell wiring is Red to terminal 1 and yellow to terminal 3. Should I connect Red to SL on and Yellow L in ?


... Air Conditioners

Hi, I want to wire a Type 19/T Thermomess thermostat to my oil boiler at home. I am not too sure what wire I should connect to the terminals. On TR (the temp control) I have points 1, 2, P1 and on STB (reset switch unit) I have 1, 2, and P1. My mains power goes to the burner via the thermostat and I want to connect the wires correctly. Does the mains cable connect to TR (Live on 1, with Neutral on 2)? Do I connect burner cable to STB (Live on 1 and Neutral on 2)? What is P1


... Air Conditioners

I have a Trane XE 1000 and attempted to replace the thermostat. When I saw that the wiring configuration was set up for a different configuration I put the new thermostat back in the box without trying to wire it. I put the old thermostat back on, wired it just like it was (I took a pic of the config before I removed it) and now I can not get the system to power back on. Is it possible I blew a fuse or tripped a breaker in the process of reinstalling the old thermostat? There was one point where


You could test this by totally by passing the stat and connecting through a wire linc.\015\012However you seem a little to inexperienced to be doing this and in my opinion you should for safety sake wait until monday,for a tech. ... Air Conditioners

A detailed question is important to get you a relevant answers

  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
all rights reserved to the respective owners || ad-trader.net || Terms of Use || Contact || Privacy Policy
Load time: 0.1065 seconds