Question about Honeywell Programmable Thermostat Heater

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We bought a Rth2310 for our gas furnace, no AC. Our old thermostat only had 2 wires, black and white. The manual does not say which terminals for black and white.

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R and W, dosent mater which is which

Posted on Oct 07, 2009

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We are trying to install a new thermostat for our heating and ac. and the wiring colors are different.


Hello my name is Heath it will be my pleasure to assist you. Red wire to R terminal on the urnace and the thermostat. White furnace and the wire to W or w1 on the thermostat nd the furnace, Use the brown wire on the W2 terminal of the furnace and the thermostat., Yellow wire to the y or y1 terminal on the furnace and the thermostat, Green wire to the G terminal on the furnace and the thermostat, Use the black wire to common on the furnace and the C terminal of the thermostat, Use the blue wire on the Y2 terminal of the furnace and the thermostat if you have a two stage air conditioner.

Sep 11, 2011 | Heating & Cooling

1 Answer

I just bought a Honeywell 5.2 Day RTH2300B Programmable thermostat to replace my old mercury thermostat for my gas fireplace. When I took of old thermostat it only has two wires. A white wire and a black...


I just installed a Honeywell 5.2 Day RTH2310B Programmable thermostat and I had to deal with the same situation: 2 wires, one white one black. After reading the edvice in one of the blog, the solution that worked for me was: BLACK ON Rc terminal and WHITE on W terminal. My furnace is running fine now. Hope it helps.

Dec 06, 2010 | Honeywell Focus 6300B 5-2 Days...

1 Answer

I just purchased a Honeywell RTH2310 and cant get it to work. I have a gas furnace that has two wire R and White. I tried connecting to Red-Rh and W for white, with and without the jumper for Rh and Rc....


red is 24volt power, white is load,I.E. relay,touch the red and wht wires together, the furnace should start, if it don't the problem is the heater, Rheat-Rcool you have a heat/ac thermostat, no ac forget Rc,try turning thermostat all the way up, dig up a multi-meter or powered light tester, touch Rh with one wire of tester,touch the other wire to different terminals until it lights,hook up your wires, you should have heat

Jan 31, 2010 | Honeywell Focus 6300B 5-2 Days...

1 Answer

I am trying to install a RTH2310 but I do not know where the wires go. Brother in law took old Thermostat off and did not write down where they go. I have a white wire, a red wire and a green wire. Back at...


In most cases, the wires are used as this: Red=Power, White=Heat, Green=Fan/Blower Motor, Yellow=A/C. The other wires, like the one hooked to the yellow will be the condenser wires going outside. The thing I'm not sure on, is that Honeywell Thermostats usually have the terminals marked with R,W,B,G,etc. If it does, then the wires will be as color coded and just hook them back up that way. You can also test to see if those wires are what they are supposed to be by jumping the wires. You can start with red since that is supposed to be your 24v power. Jumper red and green, you should get the blower motor on, jumper the red and white, you should get the heat to come on. Same goes for a/c as explained above. Any other questions, I will be glad to help.

Jan 23, 2010 | Honeywell Focus 6300B 5-2 Days...

1 Answer

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...


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 at thermostat at furnace green on G, Blue on Y, red on R,and white on W same at thermostat If these do not match find a thermostat with these terminals

Dec 06, 2009 | Heating & Cooling

2 Answers

I bought a Honeywell programmable thermostat RTH2310 to replace my 10 year old Honeywell thermostat. My old thermostat is a 4 wire system but also has a jumper from Y to 1. New system does not tell me what...


It depends on the type of thermostat you have.
Do you have a 4 wire or 5 wire T'stat?
The red jumper wire was for a 5 wire t'stat with 1 transformer, the red jumper actually should have been from R to 1.
So you need to trace the wires back to the furnace and make sure they go to the locations identified below.
if you have a 4 wire t'stat then you don't need that jumper, if you have a 5 wire t'stat then you do need that jumper but it should go from Rh to Rc.
4 Wire Termostat
R = Red One Side of 24 volt Transformer
G = Green Blower
Y = Yellow Cool
W = White Heat
5 Wire Thermostat
with one transformer for both units
Rc One Side of 24 volt Transformer
Rh Jumper Rc to Rh
G = Green Blower
Y = Yellow Cool
W = White Heat
t'stat?

Nov 14, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

My husband just installed the Honeywell RTH2310 thermostat. The fan turns on, but the furnace does not. What's our next step? (It's a natural gas furnace and he made sure that it is on correct h/e setting....


need to make sure there is a jumper between RC and RH if the red wire is connected to the RC terminal the heat wont work you will need a jumper wire to tie the RC and RC together with the red wire.

Oct 20, 2009 | Honeywell Focus 6300B 5-2 Days...

2 Answers

Wiring new RTH2310 DIY Honeywell


sounds like you've got bear wires touching at the new tstat

Sep 18, 2009 | Honeywell Focus 6300B 5-2 Days...

1 Answer

Manual Thermostat replcaement with Programmable Digital unit.


Hopefully there are markings on the old t-stat as to what terminal is what.
on the honeywell 8000 use the heat pump labeling and then the standard wiring would be
R- red
AUX-white
Y- yellow
B- O/B
C- black
G- green
There should not be a bare wire, it probably just has the insulation stripped back way too far.
You should probably open the furnace and compare the terminal label in the furnace to the wire color. normally yellow and blue pass through the furnace and are wire nutted to wires going to the outdoor unit. In the furnace the white wire will connect to the w or w1 terminal. also, you will need to set the Honeywell stat to have the following parameters.
170-7
190-1
200-0
other parameters that I did not specify, you may read the manual and make your own decision but I recommend factory settings for the other parameters

Jun 14, 2008 | Ruud UBHC Air Conditioner

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