Question about Honeywell Focus 6300B 5-2 Days Programmable Thermostat Heater

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I bought a rth2310b honeywell thermostat and i only have 2 wires coming out of my wall.  Where do i hook them to?

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  • akflyer31 Feb 25, 2009

    I sorta have the same dilemna except that I have 3 wires. I have tried connecting the wires to RH, W, and G terminals. It turns the furnace on but unable to close the zone valve when selecting a cooler temp.

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On rh and w

Posted on Jan 26, 2009

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My old thermostat has 8 wires and I'm trying to figure out how to install a Honeywell Rth2310b thermostat.


The terminals on the old stat should be basically the same as on the new stat...with a couple exceptions anyway. Note the color of wire on each terminal before removing them and reconnect to the new stat on the same terminals. 8 wires typically indicate a heat pump, so in the configuration menu you'll have to tell it whether to energize the O terminal in cool or not. If you have individual wires on Rc and Rh terminals, you must remove the factory jumper between those two terminals on the new stat. If not, you'll burn out one of the two control transformers or possibly damage your new stat.

In the configuration menu, you'll have to tell it whether its a gas furnace or electric furnace, select the way the fan operates and possibly limit the cycles per hour on both heat and cool modes. There's a lot of subtle entries that need to be done to 'tailor' the new stat to your likings also.

I think it would be best to rely on someone thats a bit familiar with HVAC to change out your stat for you..... as once it is changed, all possible functions of the stat need to be verified as correct in operation.

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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...

2 Answers

Trying to hook up a RTH2310B thermostat to a wood pellet stove with only two wires.. How do I know where to connect them too?


Hey Brad432, this is what i did with the same RTH2310B thermostat and my harmon stove. You must have the heat sensor that plugs in the back of the stove to start with. Take your new wire from the stove to your thermostat, red to rh, white to one side of your sensor then other side of sensor to W on your thermostat. On your stove side set your room temp as high as it will go and let your programmable thermostat set the room temp. Works good for mine. Good Luck

Nov 01, 2010 | Honeywell Focus 6300B 5-2 Days...

1 Answer

I bought a honeywell ct3200 and not sure how to hook it up to a two wire system. The wires coming out wall are black and white


If you just have two wires coming from the wall then attach them to the terminals marked R (may say Rc and or Rh, usually has a jumper installed between the two) and W. Hope this helps

Oct 05, 2009 | Honeywell CT3200 5-2 Day Electronic...

1 Answer

Honeywell RTH2310B Programmable Thermostat


i would check to see if thier is a jumper between RC and RH on the stat if no and the red wire is hooked to RH then you need to add a jumper to RC

Sep 19, 2009 | Honeywell Focus 6300B 5-2 Days...

3 Answers

Need to hook up a honeywell rth2310b with only 2 wires!


In some situations the wall plate has no markings, there are just two terminals hooked up to the control wire for the heater. I just installed this thermostat on my gas fireplace. I connected the black wire to the Rc terminal and the white wire to the W terminal. With the thermostat set to heat it works perfectly. Thanks to johnptaylor for the help!

Jan 26, 2009 | Honeywell Focus 6300B 5-2 Days...

1 Answer

Wiring for a Honeywell RTH2310B


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

Jan 10, 2009 | Honeywell Focus 6300B 5-2 Days...

2 Answers

I'm trying to install a Honeywell RTH2310B programmable thermostat. I only have 3 wires coming out of the existing thermostat (the red wire was attached to both Rc and Rh terminals). The other wires were...


Your house might be older.  Are your receptacles two-prong, or three?
I would ignore the missing "G" wire, and connect Red to both Rc and Rh, and Y to Y, and W to W.

Jan 01, 2009 | Honeywell Focus 6300B 5-2 Days...

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