Question about Honeywell Programmable Thermostat Heater

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Replacement of Honeywell thermostat CT3200A

Can I replace it with RTH6400B. I have a high-efficiency furnace "Traingle Tubing" Prestige 250

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I can't find that model. The 3200A is (I think) a standard heat/ac unit. If the other unit is that type, you're okay. There are usually instructions with these stats for wire assignments.

Posted on Nov 13, 2008

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Posted on Jan 02, 2017

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Furnace has water under it, why? Its a Dayton gas furnace.


There are several questions that need to be answered about what type of system you have, but i found this posting that may help:
As your gas furnace runs, is there water leaking at the base? Is the furnace's air filter wet, too?There are a few things that could be happening here. But if you have a high-efficiency furnace, here's the most common cause: a condensation leak.
We'll explain why a furnace creates condensation, and what's causing it to leak out of your furnace.
Note: You'll know if you have a high-efficiency furnace if:
  • The yellow energy guide tag says your furnace's efficiency is 90% or higher AFUE.
  • The vent/flue pipe is white PVC as opposed to metal.
Why a high-efficiency furnace creates condensation
How in the heck does a high efficiency furnace create condensation/water anyway?
It's all about how the furnace extracts heat from combustion gases.
A lower-efficiency furnace extracts some heat from combustion gases and then quickly vents them out the flue pipe.
But a high-efficiency furnace, to extract more heat, has 2 heat exchangers. These allow the furnace to extract heat from the gases for a longer period of time. This causes the combustion gases to cool and then condense.
That condensation then exits out your home through a drain. But if that water is pooling around the furnace, there's a problem preventing it from draining properly.
Causes of a condensation leak around a high-efficiency furnace
  • Clogged condensation tubing
  • Clogged condensation drain
  • Breaks in the condensation line
  • Issues with the condensate pump (if you have one)
You'll need a furnace technician to diagnose which of these is the issue and then fix it.
Other causes of leaking water around a furnace
If you have a conventional, standard-efficiency furnace...then its flue pipe may be incorrectly sized.
If you have a whole-house humidifier connected to the furnace...there may be an issue which is causing the humidifier to leak into your furnace. Your humidifier should be getting annual maintenance from a professional to prevent this.

Dec 13, 2016 | Dayton Heating & Cooling

5 Answers

How do you change the filters in a Honeywell F300A-1625 Electronic Air Cleaner ?


Hi,

Locate your furnace and the filter compartment. This compartment is normally covered by a strip of metal that slides in and out of place. Step2 Determine the size of the air filter that needs to be replaced. The sizes are noted on the side and usually appear as 16x24 inches and other similar sizes. Step3 Purchase a replacement filter in the size required for your system. There are a variety of filters to choose ranging from the inexpensive standard spun glass filters to pricier synthetic polyester fibers. Step4 Consider high efficiency filters if you live in warmer, dustier climates as they do more than just capture dust particles. The high efficiency filters can trap tiny particles of dust, pollen, mold and other irritants. Step5 Look at hepa filters and filters coated with chemicals to kill bacteria if allergies and other irritants are a concern for your family, . Step6 Use a black permanent marker when you change the filter. When you slide up the metal guard, note the direction of the air flow marked on the side of the old filter and draw arrows in the same direction on the metal guard. This way you will have no question which direction to insert the new filter. Step7 Replace high efficiency filters at least 4 times per year. Read the manufacturer's label as most recommend changing your air filter on a monthly basis. (High efficiency filters do have a longer life expectancy than the less expensive spun-fiber filters.

Oct 06, 2008 | Honeywell Heating & Cooling

2 Answers

How many pounds of reon do you put In 2011 Rheem Classic packaged ac unit


look on the mane plate on outside unit... has voltage ratings model serial type of freon factory charge etc.

Jul 21, 2014 | Rheem Prestige 14 Series 4.0 ton 14.5 SEER...

1 Answer

Honeywell emm-3 goes to high heat when thermostat does not call for heat


Replace it (thermostat), but first make sure its in a good location to read the space temperature.

Nov 29, 2013 | Heating & Cooling

1 Answer

I just got a new Honeywell Utility Pro Thermostat. The digital temperature gauge seems very sensitive which results in the unit turning the furnace on and off for very short periods; much shorter than my...


Sounds like you also have a high efficiency furnace like mine.
Here is a procedure to slow down the number of cycles you are experiencing.
1. press System
2. press and hold buttons 3 and 5 on the bottom of the screen. (there should be 7 buttons displayed)
3. set code to 240
4. change setting to 3 for 3 cycles per hour. (your thermostat probably shows a higher number, probably 5? That is why your unit is cycling so often).

Jan 20, 2011 | Honeywell Electronic Programmable...

1 Answer

Honeywell thermostat RTH6300b will not shut off at


I had this same problem with my 6300B thermostat. I did not see this when I installed the tstat and did setup for it the first time. If you go to page 16 of the install guide, there are instructions for setting up your tstat for your furnace and AC. The setting I had wrong was on page 20 of the guide. It defaults to a setting for a furnace/ac that is less than 90% efficient. When I changed the setting to a furnace that is more than 90% efficient, the fan not turning on or off problem went away. The setting on page 20 should be set to "3" if you have a more than 90% efficient furnace/ac. Hope this helps your problem

Jul 18, 2010 | Honeywell Focus 6300B 5-2 Days...

1 Answer

I have a Honeywell programmable thermostat with a York high efficiency furnace. To turn the heat on, the thermostat "clicks" and cycles the furnace through startup (warm the fire starter, turn on gas,...


Well, it is a computer, and they all glitch, now & then, you say it clears with a power off, and thus resets it, It maybe a thermostat, flaking out, they do that, but the 6'o'clock, thing being the "Or" that sets it apart, I wonder if it isn't just a faulty control unit, as two together is too many, for a single cause, now, it sort of points there, but also, may sound silly but first, of there is any, Check your backup battery..

Feb 26, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

I have a honeywell ct3200 with a trane xl 80 furnace. it will cycle on to the right temp, go off and cycle the furnace back on 30 seconds later. Is that normal? It is 32 degrees outside, set at 68


Hi, check page 22 in your manual, it says "Adjust the screws on the back of the thermostat as instructed on page 7." Your furnace is a 80% efficiency but is also a high efficiency 2 stage heating system so try adjusting screws A and B both ways and see which gives you the correct cycling.
Your manual is here:
http://customer.honeywell.com/techlit/pdf/69-0000s/69-0653.pdf

Jan 18, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

I have a Honeywell RTH6400B thermostat that reads in farenheit.How do I switch it to Celsius?


go to myhome.honeywell.com and search for a manual for your model number thermostat on the right hand side of the page

Oct 01, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Updating old honeywell thermostat with a new honeywell thermostat


check in the unit heater to see what is hooked up most only need to have red from transformer white to call for heat and green to make the fan run in man and somtimes common usually blue or black

May 09, 2009 | Honeywell Programmable Thermostat Heater

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