Question about Heating & Cooling

Open Question

Wiring convserion for honeywell rth3100c thermostat. have a rc wire from old thermostat

Posted by on

  • 1 more comment 
  • Anonymous Apr 21, 2009

    wiring conversion not matching up help?

  • Anonymous Apr 26, 2009

    i need a wiring diagram

  • Anonymous Apr 28, 2009

    air want kick on



×

5 Suggested Answers

  • 24 Answers

SOURCE: Need help with wiring thermostat

first do you have a heat pump unit or standard a/c? standard a/c connections at the thermostat go like this red wire to rh-rc which is the 24v power and you don't have to remove the jumper.white goes to w which is the heating wire yellow goes to y which is the cooling wire green goes to g which is the fan wire and blue goes to c which is the common wire. so if your stat has rc- rh ywgc you should be set if the wires on the furnace correspond with the same alpha designation.orange may be used if u have a heat pump unit otherwise it may just be a spare you cap off and leave behind the subplate.

Posted on May 31, 2009

  • 49 Answers

SOURCE: Intertherm to Honeywell thermostat

Typically if you have a yellow wire in the "y" terminal blue is used as common or "c". As far as your jumper from rc to rh, that will depend upon what type of heat you have. If all of your heat and cooling come from your packaged unit outside, yes you will need the jumper. If this does not work maybe you have a bad breaker or transfomer.

Posted on Oct 14, 2007

  • 49 Answers

SOURCE: Replaced thermostat on FA4ANF030 with Honeywell model rth3100c does not work

If you have a heat pump do not put your blue wire on b. Put it on x or c. If you don't have an inline fuse you may have blown your transformer.

Posted on Dec 04, 2007

  • 230 Answers

SOURCE: im changing an old honeywell

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 exsisting jumper to RC)
White wire = W (heat mode)
Yellow (or sometimes blue) wire = Y (A/C)
Green wire = G (Indoor Fan)

Posted on Jul 03, 2008

koolbreezes
  • 540 Answers

SOURCE: got a honeywell t8400c thermostat

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

Posted on Sep 03, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have a rth3100 that i installed programed it ac came on the next day went off and wont come on it was cycling on and of. After new one was installed dont have power to it


http://www.ps2netdrivers.net/wiring.diagram/honeywell.rth3100c/

Here you can find all about Honeywell RTH3100C like wiring diagram and other informations. For example: thermostat wiring diagram, installation manual, installation, thermostat, wiring, manual.

Honeywell RTH3100C manual (user guide) is ready to download for free.

Apr 27, 2015 | Computers & Internet

1 Answer

How do you relpace an A.C. thermostat?


E Back up heat/ white wire
AUX Jumper to E
Y yellow wire / Cooling - compressor
G Indoor fan Green wire
O Reversing valve energised in cooling most units Orange wire
L unknown. consult your manual Leave open
R Main power Red wire
B Reversing valve energised in Heat Rheem units only.
C Common second leg of power Blue wire.

Aug 30, 2014 | Honeywell RTH3100C - Digital Heat Pump...

1 Answer

RTH3100C thermostat for an older Lennox heat pump


well the wire on x will go to e thr r is the red wire goes to r the wire on f willgo to g the y will go to y now the rest you'll have to verfy at air handler o will go to reversing valve common wire will go to c the electric heat will go to aux

Feb 06, 2014 | Honeywell RTH3100C - Digital Heat Pump...

1 Answer

Changing From Trane to Honeywell


Color ---> New stat terminal

Blue--------C
Green------G
Yellow-----Y
Orange----O
Red---------R
White------E and Aux.
Tan---------unused, tape and secure it

If there is Rh and Rc or R and Rh, these terminals should be jumpered together.

I used to install Weathertrons eons ago. Whatever you do DO NOT connect the blue wire to the B terminal, you will short out your low voltage transformer immediately when you switch to heat

Jun 13, 2013 | Honeywell RTH3100C - Digital Heat Pump...

1 Answer

Havc thermostats


I will assume you did not write down what color wire you took of each letter on old thermostat? Sometimes color of wire doesn't matter as some installers will use whatever color. If you noted where each wire was on old thermostat, just put same color wire to same letter on new one. Under normal situation. y is for compressor (cool) G, is for fan (on AC) , RC is 24 volts from transformer for AC side, RH is 24 volt transformer from heat/furnace, and W is for other wire from furnace, is furnace is only 2 wire system. Was there any wire connected to A on old thermostat?

Apr 11, 2012 | Heating & Cooling

1 Answer

My old thermostat is a goodman and the wires are Y G R O W2 E C the new thermostat we bought is a honeywell RTH3100C and the wires are E Aux Y G O L R B C have a connection for all except the L B...


OK... You only need to use the wires that were already connected on the old thermostat.. the new thermostat will have extra terminals left over... The L and the B are for systems that require those or carry an auxillary device like himidity control etc.. Let me know how it works

Sep 04, 2010 | Honeywell Heating & Cooling

2 Answers

Heat will not shut off


Take white off of Aux, and attach it to L

Feb 16, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

I had an old thermostat that i had to change need wiring diagram


HONEYWELL WEBSITE:
Go to honeywell.com
Under red welcome sign
Bottom red highlighted box literature/image search
Type in thermostat model number
Click on arrow to right
Then click on the PDF files owners manual / installation instructions

Dec 20, 2008 | Honeywell Electronic Programmable...

2 Answers

I had an old thermostat that i had to change need wiring diagram


both thermostatats will have terminal designators R,W,Y,G, possibly O/B, C, W1,W2, Y1, Y2, etc.
Simplest method is to remove wires from old stat one at a time. mark where they came from and then install at same desinated terminal on the new t-stat. Hope this helps. be sure to shut off power supply to the unit (furnace) first. The wire coming to the R (RH,RC) terminal is the 24 volt a/c hot, all others are feeding back to perform given function.

Dec 20, 2008 | Honeywell Programmable Thermostat Heater

3 Answers

Honeywell RTH3100C


You need to go into the installer setting to change it from heatpump to single stage gas heat.Go to www.honeywell.com if youve lost them.

Dec 13, 2008 | Honeywell Programmable Thermostat Heater

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

1,343 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

paulcarew

Level 3 Expert

2398 Answers

Dan Webster
Dan Webster

Level 3 Expert

8205 Answers

Donni Steen

Level 3 Expert

659 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...