Question about Honeywell Programmable Thermostat Heater

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How do i wire a honeywell-rth2300/rth221 where the wiring was for a white-rogers-1f58w series

No heat pump hooked back up,heat comes from furance,did not see how the wires were connected

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6 Suggested Answers

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Posted on Jan 02, 2017

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  • 3 Answers

SOURCE: wiring diagram to connect programmable Thermo to Heat Pump

I don't know if this will be helpful or not, but I just installed a new Honeywell and the Honeywell customer service guy helped me get the wires done correctly. The number is 800-468-1502.

Posted on Jan 05, 2009

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  • 767 Answers

SOURCE: No heat after installing honeywell thermostat H8110U

hook up the blue wire in the furnace cabinet where the blower section and the other thermostat wires are connected to the furnace. the thermostat you have uses a common wire from the thermostat to the furnace and this needs to be hooked up in the furnace otherwise you will have the problem you are having.

Posted on Dec 07, 2009

billyvangogh
  • 108 Answers

SOURCE: I'm replacing my old thermostat with a honeywell

usually you should have 4 or 5 wires....if you have AC then this wire should be Y if not was it connected at all before?...Heating requires only R&W

Posted on Oct 25, 2009

  • 674 Answers

SOURCE: Honeywell RTH230B cooling problems...

I printed out the instructions for your thermostat. It looks like you should have the following.

There should be jumper wire between Rh & Rc

Red wire to Rh or Rc whichever is easier since there is a jumper. This is the hot wire and all the thermostat does is connect to route it to the components needed for heating or cooling.

Blue wire, tape it up and don't use it. There is no spot on this thermostat for it. It is only used on thermostats that are powered by the transformer.

White wire to W. Powers the heat relay

Yellow wire to Y. Powers the cooling contactor

Green wire to G. Powers the indoor fan relay

There is a black jumper on the back of the face plate. Look at section 2.4 Setting J2 Jumper in the installation instructions. Make sure you have it in the right position for what you have. If you don't have them just google them.

Hope this helps.

Posted on May 24, 2010

kingbrizzle
  • 407 Answers

SOURCE: Honeywell RTH3100C

You are on the right track, however, the biggest problem I see is that the new Honeywell thermostat that you have is for a heat pump system and judging off your old thermostat, you don't have a heat pump. A heat pump system requires more wires and different terminals for the extra components it has like the reversing valve and such and since you don't have any of those, your thermostat is trying to tell the old unit to do things it simply cannot do. Your wire colors are correct as you described and on a standard thermostat you will have the same terminals as you do now. C/B(Blue)= is common by the way. One way to look at the RC/RH terminals is to think of it as both 24v, one being for heat(H), and one for cool(C). When they are jumped together, it allows the thermostat to use one wire for power instead of two (Red). Hope this helps and good luck!

Posted on Jul 14, 2010

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1 Answer

How do I replace an old White Rodgers thermostat with new honeywell TH5220


The Orange wire for the reversing valve and used with a Heat Pump
If you have a heat pump, then yes. If you have a gas furnace then no. If you have a HP and the reversing valve is not connected, then you might just be using the emergency electric heat strips. :-o

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If you look on the install manual. It says it will work for a heat pump without backup heat. No heat strips.........If you do not have strips the guide says as follows

"PLACE A JUMPER (PIECE OF WIRE) BETWEEN Y AND W IF YOU ARE USING A HEAT PUMP WITHOUT AUXILIARY/BACKUP HEAT." if this dosnt work check the fuse in the air handler you may have blown it if you did not turn the unit off before installing.

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Think you need a different thermostat...you will need one for line voltage, not low voltage.

Dec 08, 2013 | Honeywell Programmable Thermostat Heater

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How to set up??


First, you have to make sure that the thermostat is set to conventional and not heat pump. Then, the best way to know where the wires go, is to mark what terminals the came off of from the old stat. If that isn't possible, the next best thing to do is go to the unit and see where each wire goes. This is because the wire colors are not exactly set to any certain standard. It's at the discretion of the person installing the system in the first place to use whatever colors they like, to work any part of the system the choose.
The basics/commonly used colors are:
Red- R terminal- Power
Green- G terminal- Fan
White- W terminal- Heat
Yellow- Y terminal- Cooling
Blue- C terminal- Common
Heat Pump Thermostats use more wires, such as:
Orange or Black - O/B terminal- Reversing Valve
Brown- W2/Aux terminal- Heat

My suggestion would be that your black wire is for your cooling(Y), and all other colors wire up to the corresponding terminals. There are many systems that are ran only by 2 and 4 wire setups, therefore, it's possible that whoever ran your wire initially did not have a yellow wire in the strand. Also, if there is a yellow wire in the strand(possible 7wire strand), it could also be that the wire had a short and they switch the wires to bypass the short. Hope this helps and Happy Holidays!

Dec 01, 2013 | Honeywell Programmable Thermostat Heater

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Installed the Honeywell RTH2300/RTH221 but the old thermostat was removed by someone else. Since the original wires were not labeled, I simply attached them to the new thermostat by following the letters...


This appears to be a thermostat installation that was made without regard to wire code. The Honeywell material I have suggests it may be necessary to check connections at the furnace end and work back to the thermostat. There may be compatibility problems between the number of wires in the old installation and terminal connections in the new thermostat. Honeywell may be able to help at 1-800-468-1502.

Oct 29, 2013 | Heating & Cooling

1 Answer

Yes,a little more inf.that ight help solve my problem a little quicker.let me start from the begining.my wife kept switching from heat to air until my themostat finally stop working.it use to be hooke


Only the original new manual will give you the wiring. The bad news in manufacturers do not always use the t=same colors to d the same things. God Bless
John. Same happened to me and I guessed till it started functioning properly. Sorry

Apr 16, 2017 | Honeywell Programmable Thermostat Heater

1 Answer

Installed RTH2300 themosat, but there is no heat coming out, I have O, R,W,G,Y,C wire for the old one. Thank you.


well the letters go to wire color but that doesnt mean tha last guy did it right. go to the furnace and look at the termail board in it see how it is hooked up there and do the same on t stat if there is a rh and rc use the rh for heat at the t stat if all else fails hook the red and white wire together and that should bring the heater on then start looking at the t stat for your problem.

Feb 15, 2011 | Honeywell Electronic Programmable...

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