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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


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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

Borg warner Is the old round York Borg/Warner thermostat incompatable with a Honeywell? I just replaced my old round mercy switch thermostat with a Honeywell RTHL111 thermostat. The air conditioner service man says it is hooked up right, but the fan on the unit will not run on auto (it must be in the on position on the thermostat [thus the fan runs all the time]). He also replaced a relay switch inside the unit. We are using air conditioning only on this unit. Red to R (strapped to Rc), gree


... Air Conditioners

I am replacing a White Rogers 1F58-77 with a Honeywell RTH2300. When I removed the old stat the wire colors are white, red, orange, green, yellow, and blue. G- green wire Y- Yellow wire R- Red wire W- White wire O-Orange wire X1- Blue wire I hooked up all the wires except the blue. Instructions with the Honeywell unit said not to hook up the blue wire if there is an orange wire to hook up which I did. The problem, when I light off the A/C (heat pump) the compressor comes on but the


Yes you did correct. Tape of f blue wire. On your thermostat you should have el/gas turn top el and fan should work Russ ... 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

We are trying to hook up a thermostat honeywell RTH230B1006.....the unit is an old unit.. all the wires were cut...weve tried every which way to hook it up and still cannot get the ac unit to turn on


Need to know what terminals are available on the stat, and what color wires you have coming from condensing unit. ... Honeywell Air Conditioners

I have an old janitrol thermostat with terminals marked R,Y,G,O,W2 and I want to replace it with a Hunter 44360 Programmable Thermostat with terminals marked G,RC,RH,Y/O,W/B,Y1 What wires do I hook up to the hunter and where do I hook them?


Hook up like this:\015\012R-RC (jumper rc with rh) unless you have more than one transformer\015\012Y-Y/O\015\012G-G\015\012O-Y/O (depending if reversing is energized by O or B terminal, refer to your manual)\015\012W2-W ... Air Conditioners

Replacing the thermostat, took the old one off without marking the wires. Hooked it up by color and we get the furnace when we put it on cool. wires are green, red, yellow & blue (ground wire)on the wall. The new thermostat wires are red, yellow & green. Can you tell me which wires go where correctly?


The normal wiring for stats is white=w=heat,red=r=24volts,green=g=fan,blue=c=common,yellow=y=cooling.\015\012see what ties into your furnace board and match the terminals. ... Honeywell Air Conditioners

I am replacing a white rodgers thermostat with a honeywell rth3100c. i have matched my wire as e (brown) to e w2 (white) o aux y (yellow) to y g (green) to g o (orange) to o l blank r (red) t r b blank c blank now i have a blue wire which was hooked up to the x1 on the old thermostat. where does this wire go?


Blue (C) or sometimes (B) should be your common wire. Look at your schematics and locate common. Your Brown wire is (E) and is emergency heat, white wire (W) is Auxilary Heat, green wire (G) is fan relay, red wire (R) is power, yellow wire (Y) is C ... Air Conditioners

I'm installing a Honeywell RTH6350D thermostat. I'm replacing an old thermostat with mercury and only two wires connected to it. Unfortunately, these two wires are not labeled. How would I hook them up to the new thermostat.


One to R terminal the other to W terminal ... Air Conditioners

I have a carrier air/heating unit with pump. It has 8 wires. Brown,blue, white, yellow, green, black, orange,and red. I'm trying to install honeywell thermostat. The wires from my unit are suppose to go into these honeywell (RTH3100C) thermostat slots. hONEYWELL WIRE SLOTS E Aux Y G O L R B C The only thing i have to go on is the wire colors from my wall which were not labeled or coded in any way. I am not sure about the model# of our unit because it is so old that the model# has faded away the


Turn the power off to the air handler. Open the control cover. Write down what color wires go together at the wiring terminal. All 8 wires are probably not used.\015\012Post the findings here.\015\012In most cases,\015\012E= brown-e ... Carrier Air Conditioners

Trying to hook up Honeywell RTH6350 thermostat. When turned on cool out air blows out. We only have a green, red, yellow and white wire from the old unit. Are we missing some wires? we have a heat pump.


Your Thermostat should wire as Red to Rc/Rh (if Rc/Rh are not connected you need to put a jumper between them; White to W; Green to G; and Yellow to Y on your thermostat. These will be the only wire connections that you need ... 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

RTH221 honeywell thermostat install, hooked up blue wire from old thermo that hooked to C to o/b connection on new thermostat no work did I screw something up as old thermo will not work as well now. was not supposed to hook blue wire up I found out later on Internet. any easn fix, blown fuse??? etc. Thanks


Hi,\012maybe a blown fuse if it has one... if not then you blew the transformer...\012Check on the circuit board in the furnace or air handler for a fuse...\012if there isn't one... then you will need to replace the 24v transformer. ... Honeywell Air Conditioners

I have a bryant model 702b packaged unit with 5 wire thermostat wiring coming out of the unit. R Y B G and W. The thermostate in the house is 5 wire and goes to the old central unit and them has a 4 ire cable going outside. What do io need to do to hook this from the thermostat to the bryant unit? Is it as simple as Y to Y R to R etc. Thanks wesley


R-Red is power\015\012Y-Yellow is cool\015\012B-Blue is cool as well\015\012G-Green is fan leg\015\012W-White is usually heat Leg\015\012\015\012\015\012If you have no indoor unit and this is a ac/gas or ... Air Conditioners

I'm trying to wire my honeywell t8011 thermostat Replacing an old Honywell unit.


I hired someone...................\015\012 Could you please refund my $?\015\012 \015\012 Thanks,\015\012 Danny ... Honeywell Air Conditioners

I am installing a new thermostat for my baseboard electric heat. The electric box has 2 wires comming into it. So I have 2 black, 2 white and 2 ground. The old thermostat had a place for all 4 wires (one side line one side load) the new thermostat is a honeywell RLV430 High voltage (at least I got the high voltage part right). It only has 2 wires so I am at a loss as to what to hook up where. My inclination is to hook the load to one and the line to the other. But I don' know if this is r


Hi tlef\015\012\015\012To answer your question;\015\012\015\012Tie the two whites together with a marette , and the two blacks to the thermostat , it doesn`t matter which wire goes where on the thermostat since there is no polarity.\015\ ... Air Conditioners

Got a honeywell t8400c thermostat i'm trying to replace with a honeywell rth3100 honeywell thermostat but only have yellow green red and white wire on the old and don't know where to put the wires on the new


R--- rc or rh y--yellow g---green w--white red is power yellow is cool g--fan white is heat ... Honeywell 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

I have a colman evcon split unit, I had a guy replace the thermostat (old electronic, new mercury) and everthing worked fine. One week later out side unit stopped and was frosted over on the outside. I can push the contactors on the outside unit and got power. I traced wiring down to transformer. I replaced the transformer with one with a circutbraker built in. When i turn the brakers on the transformer curcuit breaker trips...I followed the wiring on the transformer to the best of my ability, h


Hi, you do have a dead short in the control side of the system. Good that you bought a transformer with the breaker. Most people don't and will smoke several of them. Anyway, it is a split system. If it was iced up, it must be a heat-pump, not gas fi ... Air Conditioners

Installing 1 1/2 ton Weatherking Heatpump and ADP WAK351807P2 air handler 1 /1/2 with 7.5KW back up heat kit. Can't seem to get the thermostat hooked correctly. I understand the Weather King product reversing valve is different wired than other models. Color of wires on outside unit and inside unit don't match. Is there an easy wiring guide? I understand the R G Y W, but get hung up on the O B. Installing a Honeywell Digital non programable RTH3100C thermostat.


O energizes the reversing valve when the thermostat is set for COOL. B energizes the reversing valve when the thermostat is set for HEAT.The O/B is usually a orange or black wire.You can't hurt anything if you choose O or B incorrectly. H ... Weather King 10AJA6001AH Air Conditioner

I just got a new honeywell thermostat and it when i first hooked it up it wouldnt turn on so i check to find out which connections on the thermostat when open i changed my wire to make it correct now when it turns on it doesnt turn off. i only have 2 wire that were on the old thermostat and the new one shows spots for 3 wire do i need to run a 3rd wire to get the furnace to shut off after it reaches desired temp? right now i have to disconnect the thermostatto shut it off.?


Hello my name is Heath it will be my pleasure to assit you. If you did not turn the power off to the furnace before rerplacing the thermostat then you may have burned out the board in the furnace. But first if there is a RH/Rc terminal in the new the ... Honeywell Air Conditioners

I am replacing a four year old Bryant thermostat (7 wire) that runs a Bryant heat pump and gas furnace. I connected the Honeywell EIM to the old wires using the same colort codes: W = W (o/b); Orange = W2; Y = Y1; R = R; G = G; Blue = C. When I powered up the system the thermostat accepted programming and setup commands but cannot find the equipment (Error code 089). Help, and Thanks. Ron


... Air Conditioners

I've replaced my very old (mercury) Honeywell thermostat with a new one (round, Model: YCT87K1011), but I can't get it to control the temperature. If I connect the two wires one way, the furnace comes on but won't shut off. If I reverse the wires, the furnace doesn't come on at all. I've actually tried two of these replacement thermostats with the same results. Any suggestions? John


Hey John, man that ole T87 has been around for a hundred years and I have installed many of them, but I cant remember the letters on the wiring. Seems to me that it is R-W-Y, any way you will use the R and W. I have a t87 at home still in the box an ... Honeywell Air Conditioners

I need to replace an old Thermostat that just has 3 wires coloured Red, Blue and Yellow. The Honeywell THR830TUK Thermostat I have bought shows 5 wires on the diagram. I'm not sure which wire goes into which Terminal. Can you please advise? Regards Tim


The honeywell THR830TUK thermostat does not require a neutral as shown in the instructions.Connect the LIVE to terminal "1" and your YELLOW SIGNAL wire to terminal "3".Connect your EARTH (if you have one) to the EARTH connection on the top left ... Air Conditioners

We have an old mercury thermostat when we took the old one off, there are onyl two wires, a black one and a white one. The diagram on the honeywell rth2310 has five wires so how do we know whcih one to hook up the balck and the white wire to?


Hello Connect BLACK = RH/RC or R....WHITE=W this is heating only.RH/RC jumper wire, if not use RH+W ... Air Conditioners

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