Question about Heating & Cooling

Open Question

Electric furnace blows cool air - Heating & Cooling

Posted by on

6 Suggested Answers

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

  • 1 Answer

SOURCE: We have a coleman evcon

It sounds as if your furnace is exceeding the limit tempperature of the manual reset switch. The coleman is designed for the fan to continually run when this limit switch is tripped in order to keep the heat exchanger cool.( it is a safety feature) afew things may be happening.
1. the manual limit switch( the one you have to push) may be defective.
2. The fan may be running at too low of a speed. Turn power off at circuit breaker. locate circuit board on the board there will be one terminal that says heat if the red wire from the blower is on it tthen you may need to up the speed. follow the wires from the blower to the board if it has multiple speeds then you can isolate the red and put the blue or orange on the heat terminal.
3. the board may have an adjustable fan on and fan off pin selector if it is set up to come on to long or go off to soon it may not be controlling the temp of the heat exchanger properly.
4. I would also suggest checking to see if the orifices and gas valve are set up for your sytem correctly.
these are just simple ideas let me know how things go.

Posted on Oct 15, 2008

Accurate Joe
  • 61 Answers

SOURCE: Electric furnace blows cold air before and after warm air.

It is normal. Your house has to go down a couple more degrees because the heat pump is not working. You can solve this by rewirng you thermostat. Take off the wire that goes to Y and tape off. Then take the wires that are marked w and e or w1 and put the wires to yellow. Do not run ac with it wired like this. If you need more information please post me back

Posted on Nov 29, 2008

diths_kri
  • 67 Answers

SOURCE: furnace blowing cold air

THERMO

Posted on Jan 07, 2009

philbran
  • 242 Answers

SOURCE: Furnace runs constantly since blower motor was replaced

Sounds like they wired it direct to line voltage , it should run through a sequencer or fan relay to cycle on and off , your seq./relay could be stuck closed to but unlikely being it was just repaired , call the service company back before you do anything they are responsible.

Posted on Apr 11, 2009

TheMobilian
  • 8220 Answers

SOURCE: AC is set on cool & furnace comes on blowing hat air

My first thought is a bad thermostat or control board or maybe something is wired wrong. If all that seems to be working I would look at the outside unit. if that condenser fan motor is not operating then you wont get any cooling. look for a swollen capacitor. Read more

Posted on Jun 06, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Brand new furnace wont start its a aruf 14 electric air handler with a 10 amp heater coil


the 3 amp fuse protects low voltage side of transformer. if it's blowing on a call for cooling wire pair going to outside unit bad or contactor in outside unit.

Nov 18, 2013 | Goodman Heating & Cooling

1 Answer

My coleman central electric furnace only blows cool air


The AC unit outdoors must be running and rejecting heat by its air flowing through it the 2 copper lines are the refrigerant lines, the fatter one should be "beer can cold" if not its low on refrigerant or not running.

Jan 01, 2013 | Coleman Home Electric Furnace Eb15b/Eb15d

1 Answer

Coleman furnace running, won't shut off, blowing cold only


Hello, the blower will run continues if 1) the limit switch has tripped 2) the relay on the intergrated control board is stuck Try tapping on the control board and let me know if it shuts down.

Nov 04, 2012 | Heating & Cooling

2 Answers

Intertherm electric furnace modular home


Will be to clean each contact-switch and scrape the contacts and use wd40 and spray of air and remove all rust, its possible that exist another options of failure.

Jun 17, 2012 | Heating & Cooling

1 Answer

I have an Intertherm electric furnace in my mobile home model # FEHB 015A. The heater started acting up by first blowing warm air like normal but then blowing cool, not heated air after a few minutes of...


http://www.nordyne.com/Literature/707716c.pdf
http://www.nordyne.com/Literature/359a.pdf
The diagrams above may not be exactly what you are needing. But they will be close. Usually the diagram for the furnace is on the inside of the blower fan door. Two things come to mind. It seems like your limit switch(s) are cutting out, then in, then out, etc and may have failed totally. These are in the system to prevent the temperature in the furnace from getting too high. Why they are cutting in and out may be due to the lack of sufficient air passing through the furnace. This can be caused by, 1. the fan speed is too slow, or 2. the air filter is needing to be changed. I am not sure how proficient you are with electrical troubleshooting. I would (turn off all power to furnace) find the limit switches (usually at the top of the heating elements) and check to see (with an ohm meter) if the switches are allowing the meter's current to flow through them. Your meter should read near zero, if not, then I would replace the switch with an exact one. If you are proficient with electrical troubleshooting, I would place the furnace in the "call for heat" position, with the power on, (be careful, this stuff can hurt) and I would see if I have voltage at the heating elements, and I would check with my voltmeter across the two leads on each limit switch if there is voltage present. If there is voltage present, then the switch is probably ****.
Depending on the furnace you have, you might have a number of switches that control the heating elements, these units are usually time delay and if they fail, you should replace them with the same delay time. I hope this helps.

Dec 07, 2010 | Heating & Cooling

1 Answer

Furnace will not blow hot or shut off


The furnace has a fault check the furnace compartment for a flash code and check it with the code chart on the furnace door. Turning the power off to the furnace and turning it back on will reset the fault but it may happen again till you verify the fault and fix it.

Feb 22, 2010 | Heating & Cooling

1 Answer

Why would the furnave be blowing air if the gas is


Sometimes the fan stays on a little longer to cool the motor down before turning completely off.

Feb 20, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

Heating unit blows warm air then turns to cold air


it sounds like unit could be kicking out the low pressure switch or if it is a electric furnace it could be the sequincers

Jan 11, 2010 | Ruud UBHC Air Conditioner

1 Answer

Central air conditoner unit doesnt blow cool air into home has some ice on the inlet heat and cooling lines going into the central air unit


Change the furnace filter. Make sure you use a cheap one when air conditioning, as the better ones restrict airflow when they filter out so much stuff and then plug up, not allowing enough air to pass over the cooling coil in the furnace's air plenum. Turn the A/C off for a few hours (with only the furnace fan on if possible) to melt the ice off the cooling unit inside the furnace.

Sep 01, 2008 | Carrier Heating & Cooling

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

Related Topics:

25 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

paulcarew

Level 3 Expert

2458 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Donni Steen

Level 3 Expert

659 Answers

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

Answer questions

Manuals & User Guides

Loading...