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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

Answers :

\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... they blow very easily...

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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

T-Stat Replacement I am trying to replace an old t-stat with a new Ranco ETC-111000-000. The old t-stats have no idea what they are they are old and rust can't read. The old ones are hooked up with only two wires, (where i used to work and bought these from we used 4 wires so im lost) The old one has a red, yellow, and blue dot on them. Yellow is on top, blue middle and red bottom which is common. I have a Blue wire hooked up to common and a orange wire goint to yellow dot(?) on my new t-stat wh

You will have to trace the wires from the source, unfortunately, the colors may not be accurate. Do you have a 24v heat and cool system? I am going assume the answer of yes, as this is the most common. If you have something different, we ... Air Conditioners

I installed a new honeywell rthl111 series in Oct. 2012. I wired the blue wire to the RC because that was how the old thermostat was wired. The heat worked all winter but when I tried to change over to cool nothing would work. I checked the schematics online and realized I should have installed the blue wire to the B. I checked the fuse in the power panel and saw I had blown it. I changed it and rewired the thermostat the correct way. I tried again and still neither the cool or heat will work. A

... Goodman Air Conditioners

I have a Carrier 8000 weathermaker. Recently the blower motor began to run progressively slower and finally just bogged down. I replaced the motor, but the replacement motor has three speeds (red, blue and black wires) whereas the old motor had four (red, blue, black and yellow). Initially I hooked the new motor wires up to the circuit board the same way the old ones were, leaving an open spot where the old yellow wire was. New motor works, but at lower speeds, pushing less cool air. We liv

Found system was slowly loosing coolant through a variety of miniscule leaks in rusting part of condenser. Apparently coolant level had dropped sufficiently in the blower repair interval to where the system no longer functioned with adequate efficie ... Carrier Air Conditioners

My plan jane evcon thermostat is not wired right. The furnace works fine. The air conditioner will only come on when you push the lever up hotter than it is in the room instead of cool. It will then run, but runs and runs and will not shut off. There are 4 wires, red that is hooked to screw with B by it because the blue wire has a piece of paper on it with a Y and is hooked to the Y screw, white that is hooked to one with W and green wire is hooked to the screw with G. little short red wir

Hi,\015\012Okay....two things to check on...\015\012make sure that the terminals and the wires are matched in the t-stat and the furnace board...R-R Y-Y G-G W-W ....if everything matches up then you have a fried t-stat... What you are say ... 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 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 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

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

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

I installed the rth2310 and it seemed pretty straightforward. I had R, W, Y, G, on the old thermostat, and hooked them up to the same, with R to Rh with the jumper in place. Now, the snowflake cooling symbol is on all the time, and when I turn on the heat, it just runs all the time. This is a zoned system. I replaced another thermostat at the same time, and it works fine (it had a black wire going to Y, but otherwise the same).

You need a jumper between RC and RH. ... 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 DuoTherm BriskAIr 13.5K BTU. The Dometic thermostat also controls my HydroFlame 8531-IV furnace. This morning, the furnace would not come on. I checked the wiring and there is no voltage at the thermostat blue wire on the furnace. If I jump 12 volts to the thermostat blue wire, the furnace works normally. Replaced thermostat; no change. I hear something clicking in the air conditioner unit when I switch the thermostat to furnace mode. I assume the A/C has a relay to control the thermost

If you look at control box at roof unit, they usually use a separate set of wires for furnace. See what colors they are attached to at harness to thermostat. Some just follow other harness, and come out at thermostat. (bypass control box) Once you've ... Dometic Rooftop RV Air Conditioner

I have an amana rha36b2a heat pump and am trying to hook up a new thermostat. It's a pro 1 iaq t905 programable thermostat. I have hooked up the green yellow white and red (and ran a jumper wire from rh to rc). I also ran a jumper wire from W to Y. I ran the brown wire to C. The thermostat works great for heating but won't cool. When cool is chosen the heat comes on. Help! I know the O and B on the thermostat are the heat and cooling changeover valves but what should I do to connect them if that

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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 Trane Heater/AC unit no heat pump with a thermostat model 802AS32DAA that has seven wires. I am going to a five wire heating/cooling thermostat. What do i do with the two extra wires? old thermostat red wire-RC slot (24 V from A/C) white wire-W1 (???) yellow wire-Y (A/C Compressor) green wire-G (A/C Fan) black wire-B (?????) Blue wire-Y2 (????) orange wire-W2 (24 V to Furnace new thermostat therminals G Rc Rh Y/O W/B Y1 Can you tell me what wires to connect to each

From Honeywell : "If your old thermostat had Six or more wires, the replacement you have is Wrong!" ... 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

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?

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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

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

Thermostat with 4 wires, red, green, white and blue; no yellow wire to connect to new thermostat

... Air Conditioners

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

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I have a tempstar with 6 wires. Green, Blue, Red, Yellow,White, and Orange. I am trying to install a White Rodgers 300 thermostat and letters are not matching up. The thermostat has G, A, RC, RH, O, B, Y, and W. I don't know where to hook the blue wire which was labeled C. Unless it goes to RC and the red goes to RH could you please help? Thanks

You need to verify the function of each wire with Tempstar then cross it with the WR stat. Call the techline if you need further assistance 18002842925. ... Dometic Rooftop RV Air Conditioner

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