Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater

1 Answer

Have gas furnace and this winter,began having

Have 11 year old gas furnace & this winter,began having problem with furnace heat not going up to thermostat setting. the colder it is outside, the less the furnace will go up to temp setting. Replaced thermostat and still happens. if set at 70'-will go to 70' if temp outside is in the 40's. if outside is in 20's, will only kick in if inhouse temp goes below 65'. If around 15' outside, will only kick on if thermostat inhouse temp drops below 62'-all with thermostat SET at 70'. Doesn't matter if on 'schedule' or 'temporary' setting or if you increased temp to 75'. If around 15' outside, sticks at 62' and cannot get indoor temp above that. What could be the problem?? Never knew of a thermostat readjust to the outside temp.

Posted by on

  • Anonymous Mar 14, 2014

    Having problem setting thermostat

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Honeywell Expert
  • 252 Answers

The Thermostat Wizard is an interactive tool that will guide you through wiring and troubleshooting your thermostat, as well as programming it to the most comfortable settings for you and your family. Simply answer the questions from the Thermostat Wizard to correctly connect, troubleshoot and/or program your Honeywell Thermostat. You can even print the instructions and bring them right to the thermostat to help make things easier.
Go to: http://yourhome.honeywell.com/Consumer/Cultures/en-US/Support/Thermostat+Wizard/

However - the problem is probably not with your thermostat but with your furnace. It is most likely a dirty flame sensor - a maintenance issue. If you have not had your furnace serviced recently (more than 1 year) that is where you should start. Modern furnaces require regular maintenance.


Please rate my answer!

Posted on Mar 12, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Williams wall heater 2509622. How do I keep the pilot on? It tends to turn off after it reaches the desired temperature.


WILLIAMS 2509622 OWNER'S MANUAL Pdf Download.

www.manualslib.com > Brands > Williams Manuals > Furnace > 2509622
2509622; 2539622; 2559622; 3509622; 3539622; 3559622; ... WHAT TO DO IF YOU SMELL GAS: ... Williams furnace co. direct-vent wall furnace owner's manual (24 pages) ... Caring for Your Furnace ............24-25 Locating Wall Furnace and Thermostat ........6-7 Learn how to keep your new Williams Furnace operating.

How to light Heater or Furnace Pilot Light Gas Pilot of ...

? 5:01
https://www.youtube.com/watch?v=FZVQmKTYTTg
Oct 25, 2013 - Uploaded by 3p0cHx
How to light a gas pilot for a heater or furnace of the Williamstype. This is a general guide and is not ...

[PDF]Monterey Installation Instruction Manual - Home Depot



Dec 08, 2015 | Williams Heaters

Tip

Renting and Paying the Gas Bill


This past week I changed out an old hot air furnace in a rental unit that made me question why the tenant did not go to the owner and offer to pay more rent in exchange for getting the furnace changed out sooner. If you are a renter that is paying the gas bill, then you need to think about this.
The hot air furnace was at least 60 years old. It had been coal fired furnace that was converted to gas many decades ago. The pilot light of this beast was more of a torch than a pilot light. When the thermostat called for heat the flame roared for 15 minutes before the exterior blower unit that was added when the furnace was converted to gas, started up to move air through the furnace and into the house.

As I was starting up the new unit, which took up less than 1/3 of the space of the old beast, the renter came and sat down on the basement steps looking on in amazement. How would that little thing make enough heat for the house? A few minutes later those questions were put to rest very quickly.

After starting the new furnace and burning off the oil that always smokes up the house a bit on a new startup the new little unit had the house warm as toast and was shutting down. Wow, that took less time than the old beast took to just warm up!

The renter related to me how that the old furnace cost over one hundred dollars a month just to run the pilot over the summer months. The wintertime heating bills were many times higher than that. The difference between the bills of the old unit and the bills that will be coming now will be unbelievable. A savings of 40-50% is not at all out of the question.

Now, if you are renting and are paying the bill to feed an old monster of a heating system, I suggest that you make a proposal to your landlord. Offer to pay a bit more rent in exchange for a new heating system. Not only will you decrease your gas bills enough to pay some extra rent and still come out ahead, but you will have the peace of mind that you have a safer heating system under the roof that you also live under.

on Dec 07, 2009 | Heaters

1 Answer

Where is the summer/winter switch located on Dayton Fuel Trimmer furnace model 3E438A.?


The typical 'summer/winter' switch is an added switch associated with OLD heating systems back in the 50's and 60's before central air conditioning became common in homes. I doubt that your new furnace had one installed because you can accomplish the same thing by switching the fan on at the thermostat sub-base. That is, of course, providing you have a subbase with 'fan-on-auto' on it.

Jan 07, 2015 | Dayton Heaters

1 Answer

My Coleman propane furnace kicks out once and a wile and flashes a 10 flash code (gas flow with no call for heat) what need to be fixed the furnace is only 1 year old.


This sounds like you have an intermittent main board problem. It may be turning on you furnace when the thermostat is not calling for heat. It also could be a short in your low voltage(thermostat wire) going to your furnace. Either way you need to have it checked. It's under a year it should still be under warranty.

Jan 23, 2011 | Coleman Propane Forced Air Heater...

1 Answer

I have an 11 year old natural gas forced air furnace--a Goodman GMPN100-4 Rev B, which is 100K BTU and 92% efficient which was working fine at the end of last winter. I went to turn it on for the first...


You are correct. If the inducer motor is warm, but not running, it has seized up. If you replace this yourself, I also suggest that when you replace the inducer fan, check to make sure the secondary heat exchanger isn't clogged, or the condensate drain(s). If you have an HVAC contractor replace it, he should do this for you. It shouldn't run more than $350, to have it replaced and he can check for clogs (The price I'm quoting is for standard hours).

You can check this yourself by running the inducer fan without it being attached to the furnace, then attaching it to the furnace. If you notice a significant reduction in airflow, then you have a clogged secondary heat exchanger. I've run across this situation before on this particular model. The owner recenly replaced the inducer motor, but couldn't figure out why he was still having problems. I suspect the clogged heat exchanger contributed to the inducer motor to failing previously, and feel It would definitely be worth checking while you have the fan removed to help eliminate any future problems that could result from this, including heat exchanger failure. The manufacturer of this unit actually recommends you clean the secondary heat exchanger every year, but this is overkill if your furnace was installed and set up properly. I'd recommend doing it every 10 years and you're at that mark now. Instructions on how to do this are in the manual for this unit if you have it. Otherwise, e-mail me at wheels38_97@yahoo.com and I can send you a copy.

Finally, check the limit and flame roll out switches after replacing, as they could have tripped when the motor failed.

Oct 22, 2010 | Heaters

1 Answer

My Gibson Furnace clicks on but no heat comes out.


After four years I do not thing you have an effective warranty even if the company still in business. you need to open it first and clean it from any builod up dust and check the switch to see if it is working (thermostate)

Nov 08, 2009 | Heaters

2 Answers

I'm considering installing a Goodman LP Gas Furnace:sizing? Ops?


Gerge, if you go to website www.energycodes.gov
you can do a heat load calc yourself. Basically, you figure out the sizes of walls, total area of glass. total doors to outside, ceiling area and types of building materials used. It is pretty easy and then you will know for sure. The contractor should be suppling you with one but if not use this, it is free!

Nov 03, 2009 | Goodman GMS90703BXA Heater

1 Answer

Burner flame going out on windy days on Coleman Evcon LP furnace


This sounds like a bad heat exchanger. It is possible that you do not see the crack because the crack is closed when the heat exchanger is cold (or room temp). Allow the furnace to heat up, this will allow the expansion of the crack. Turn the power off and examine the heat exchanger while it is still hot.

Mar 31, 2009 | Coleman Propane Forced Air Heater...

1 Answer

Screehing noise when furnace is running


usuall a schreeching noise during blower opperation is bad berrings which would need to be replaced. Most unit warrentys for newer units cover five year parts and sometimes 10 for heat exchanger. But most do not cover labor. Or the blower may just be off balance and metals are rubbing. eaither way your proubly gonna need a tech. good luck

Mar 17, 2009 | Ingram GMS90904CXA Heater

1 Answer

I have a 15 year old Coleman Propane 130,000 Btu force air furnace, Model #BGU13020 forced air furnace. Afer the unit runs for 5 to 10 minuets, the flame will start to shuter and then it will trip the heat...


DO NOT attempt to repair this yourself. LP gas is a very unforgiving gas. Sounds like your heat exchanger is plugged. Yes it can be removed and checked, BUT it is not recommended. Trust your local repair tech. Any heater 15+ years old should be discarded.

Dec 26, 2008 | Coleman Propane Forced Air Heater...

Not finding what you are looking for?
Heaters Logo

Related Topics:

350 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honeywell Heaters Experts

Sean

Level 2 Expert

77 Answers

Gareth Cockram
Gareth Cockram

Level 3 Expert

657 Answers

yadayada
yadayada

Level 3 Expert

61292 Answers

Are you a Honeywell Heater Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...