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

4 Answers

Electrical burning smell in house

We recently (about 4 months ago we had a digital thermometer installed to replace the old one. Twice this week there has been an 'electrical burning' smell when you go into the living room (where new thermostat is located). At first we thought is was a new cordless phone so we unplugged that and the nightlight in that outlet and it seemed to have gone away. Tonight it is back. It appears that it is near the thermostat (opening in the wall where it is connected).

The walls are not warm, there is no smoke and we've checked from the basement and didn't see anything. (not certain of the brand below but i know it works for both heat/cold)

Posted by on

  • 9 more comments 
  • mhenn Feb 05, 2009

    We have gas heating (with radiators throughout the house). We do not have electrical heat strips. The furnace is located in the basement which is one floor below where we are smelling the smell. (note: the furnace is not directly below the smell). There is no smell anywhere else in the house and the heating system is still working.

  • mhenn Feb 05, 2009

    Sorry for the confusion (I'm new at this). It is a boiler. And this is not the first time that the boiler/heat have been used this season.

  • mhenn Feb 05, 2009

    No fires in the house. We've lived there almost 25 years. The house is probably 80 - 90 years old.

    Our neighbor (a plumbing/heating retiree) came over and looked today to make sure that the old line that was connected to the previous clock on the old thermostat (remember we replaced the old one about 4 months ago) was in fact disconnected (it was). We have not had the burning smell since last night.


  • mhenn Feb 06, 2009

    Yes, there is a fireplace in the same room but it has not been used in at least 8 years.

  • mhenn Feb 07, 2009

    Problem SOLVED! Thanks for all of your help. It turned out to be old/frayed wiring in a plug that was behind the couch (on the same wall as the thermostat). We, unfortunately, found out the hard way as there was a small fire behind the plug in the wall, BUT thankfully it was very small, and immediately put out b/c we were on top of it and were still investigating the problem.



    P.S. We have since had the fire dept. and an electrician to fix things so all is well. Thanks again for troubleshooting.

  • Mark Egan May 11, 2010

    Is there a fireplace in the house, and if so, how near to where this room is?

  • Mark Egan May 11, 2010

    Has there ever been a fire in the house that you now of?

    If so, how long ago?

    Did you live in the house when the fire occurred?

    How long have you lived in the house, and how old is the house?


  • Mark Egan May 11, 2010

    Does the "furnace" heat water for the radiators? Or is the furnace a secondary heat source for the space that is forced air?

    Is this the first time this season the forced air heat has run?


  • Mark Egan May 11, 2010

    If the heating system is still working, then I would be looking at the heating system. If the problem was in the thermostat, then it would have failed and the heating system would no longer be looking. Heaters themselves cause more fires than thermostats.

    You don't say what kind of heating system this is (gas, LP, or oil), nor where it's located with respect to the space where you smell the burning (or any other unit that may be nearby, but does not serve that area). Are they in the basement, in a closet, or in the attic.

    Replay back and I will try to help more.

  • Mark Egan May 11, 2010

    Glad you got identified it before serious damage occurred. Sometimes it's hard to see the bigger picture, and smelling the smells, through these teeny tiny wires.

  • Mark Egan May 11, 2010

    Downdrafts in fireplaces, and odors, are very hard to track. Even though the fireplace has not been used in 8 years, you can still get odor from it, with the right temperature/humidity conditions.

    I don't want to lead you away from investigation of the source, but my inclination is to say you probably don't have a fire condition, since it's been at least 30 hours since you originally posted. If you had a smoldering fire, it would have either turned into a full fledged fire by now, or it's has gone out on it's own. I think the stat replacement was just coincidental, and/or, your sensitivity to the odor was much higher when you smelled it (kind of the cigarette smoke issue. Some can handle it, others can't. And the degree to which some can handle it, and others can't, are hard to measure.

    Reply back if you have any further question or comment. I hate that there was not a specific solution, but, it's hard to identify the specific problem in cases like this.


×

4 Answers

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

Wednesday night we could smell something burning in my back bedroom we had to call the fire dept to my house they were there for 2 or 3 hours turning to find out what the burning smell was coming from they couldn't find out what it is we had somebody to come and look at the plug in but there has been nothing plug in there we had to shut the power off in that room and it still smell like something is still burning in there what is going on?

Posted on Jan 17, 2010

  • k ayers
    k ayers Dec 11, 2014

    I would think it's something electronic from your description of selling something burning.

×

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 31 Answers

Mhenn, It is my guess that the 'electrical burning' smell is from your heating system. Since there is no smoke and the walls are not warm.... then there is no real problem. The smell maybe just dust has collected in the duct work that is burning off the central heating systems electrical heat strips. If you have electrical heat strips then that may be the problem. If you have a central gas heat system, it may be the same type problem. Hope this helps you. Henry

Posted on Feb 05, 2009

  • Debbie Missroon Jan 08, 2013

    I have a similiar situation. Woke up to an electrical smell in bedroom and great room, it was quite strong but no smoke. I checked all the plugs for working lamps and everthing seemed ok. As the day progressed and got warmer the smell dissipated. Could it have been my heater?The smell is completely gone now.

×

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 22 Answers

I've seen tstats catch fire they may smell mild at first sort of like a server room where tons of electronics are running. Normally all the resistors and caps start melting away sometimes you can see it other times you can't. The reason typically is a short to ground somewhere in the wiring. It's nothing to take lightly the furnace should only smell maybe the first two times it's fired electric or heat. I think your family's safety is well worth the costs of paying a qualified hvac pro to check things over.

Posted on Nov 22, 2014

The smell may be coming from the heater, or the area where yours is located. It is possible that your HVAC system is carrying the smell to other places in your home. That being said, I would suggest getting an electrician out to check everything and make sure it isn't electrical. Good luck and stay safe! The smell may be coming from the heater, or the area where yours is located. It is possible that your HVAC system is carrying the smell to other places in your home. That being said, I would suggest getting an electrician out to check everything and make sure it isn't electrical. Good luck and stay safe! http://www.a-allateaseelectric.com/meter-panel-upgrades

Posted on Sep 20, 2014

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

What does Ft mean on a TCL portable air conditioner


FI - Failure1
This message could appear if the water filter is particularly clogged. See section: "Re-placing the limescale filter".

If the filter has been replaced recently, contact your local authorised service centre.

http://airmaster.net/delonghi-portable-air-conditioner-troubleshooting/


http://acerrorcode.com/tcl-air-conditioner-error-codes.html

Jan 06, 2017 | Heating & Cooling

1 Answer

Mitsubishi slit air conditioner model MSZ-GA80VA I turn on and turn off cauting out door unit fuse blown I replaced still The fuse is blow is the out door air con unit Note.unit in door stop not inpos


turn off everything electrical in house and retry with good fuse or breaker if still blows unit needs repair possible shorted capacitor? if it runs it may need to be on its own circuit dedicated to it alone

Jan 05, 2017 | Mitsubishi Heating & Cooling

2 Answers

Replaced ac unit with new compressor. Fires up as usual but compressor wont start.No fault code coming on controller. Whats the problem?


possible causes include
excessive gas
low gas
relay not working,
faulty thermostat
faulty start/run capacitor
bad circuit board

Jan 03, 2017 | Heating & Cooling

1 Answer

Hi where is my replace pro steam mop it has been 11 weeks since I sent back my steam mop and have not got one back if no reply I go consumer affairs thank kevin


Kevin,

FixYa is not any manufacturer's representative. It is a collection of folks that have experience or know how to help solve problems with equipment and products for people.

You should contact shark directly at
Shark Clean


Good luck!

Jan 05, 2015 | Heating & Cooling

1 Answer

Electric Furnace stopped running


You have one of two problems. Either the capacitor for the motor has failed or the motor has failed. I would turn off the power to the unit and see if you can locate the capacitor and remove it. An ac supply or electrical supply house can match up the capacitor. This is relatively inexpensive. Otherwise you will need a new motor.

Nov 11, 2014 | Heating & Cooling

1 Answer

Is it cost effective to replace draft inducer blower on 22 year old furnace?


Depends on the cost to repair. Probably a 22 year old furnace is not very efficient also. Take every thing into consideration.
If it still works it may work for a while but you don't want a break down in the middle of winter.

Nov 07, 2014 | Heating & Cooling

Not finding what you are looking for?
Heating & Cooling Logo

13,608 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honeywell Heating & Cooling Experts

Bill Long

Level 3 Expert

587 Answers

paulcarew

Level 3 Expert

2115 Answers

Brandon Berry
Brandon Berry

Level 2 Expert

407 Answers

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

Answer questions

Manuals & User Guides

Loading...