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Wind downdraft trips furnace safety switch - Carrier Heating & Cooling

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Raise the chimney.

Posted on Dec 16, 2008

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Posted on Jan 02, 2017

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1 Answer

Could a limiter circuit interupt the transformer from getting 24 volts to open the furnace valve?


Transformers typically supply 24v to the circut board, controls, and safety switches. 120v supplies the fan motor. limit switch is a safety switch and is part of the startup/ignition sequence. If the limit switch is tripped then there is a problem with your furnace that should be managed by a qualified professional in your area, or risk damaging your furnace, and perhaps causing a fire. Hope this clears things up.

Jan 01, 2015 | Heating & Cooling

1 Answer

Goodman furnace


Sounds like the furnace is tripping off on a limit safety, either temperature or air switch. Check filters and restrictions to air flow (furniture over return air grills, blocked filters) also, check the drainage line of the system. If the furnace can't drain water fast enough it will back up internally, and trip the system off on a pressure switch safety.

hope this helps.

Mar 18, 2014 | Heating & Cooling

1 Answer

On amana furnace when power is turned on the circulator blower comes on and nothing else happens what causes this?


Either you have a safety switch tripped or a faulty circuit board. Test all of the limit and roll-out switches, they should all read closed with an ohm meter.

Jan 18, 2013 | Amana GMH950453BX Gas Furnace

1 Answer

I have a 50,000 BTU doublesided Cozy wall furnace at my cabin. Recently the pilot keeps going out, I suspect it is caused by a chimney downdraft when I close it up for the week. Can I put a wind...


make sure you have 3 feet of vent pipe out of the roof and you have a UL listed vent cap, if you can re-light the unit all parts are good.

Nov 23, 2010 | Cozy (W352E) Heater

1 Answer

Coleman model #TG8S080B12MP11A has a code of 7-Ignition lockout?


Hi, with the ignition locked out, you need to go through the sequence of operation on this furnace to find out why its locked out. The chart that's glued to the panel will walk you through the steps to take to find out what safety has failed. Check to see that the HSI ( Hot surface ignitor ) glows. Check the flame sensor that runs along side of the pilot to make sure it is clean. You can use a piece of sanding cloth to clean the tip. Check to see that your roll-out switch has not tripped, if so reset it and find out why it tripped, gust of wind down the flue pipe, flue pipe cover missing from the wind maybe, I don't have the schematic of your furnace but your chart will lead you in the right direction to find the problem. You can also at no charge to you, call your local gas company and just say you think you smell gas and they will be there fast. I have had many people do this and have the problem taken care of for no charge, or told what they can do. Look at the schematic and locate the ignitor and follow from there through the safetys on this furnace to find out why its locked out. The inducer motor should come on first to pressurize the fire box. From there you have a small pressure switch, single pole single throw 24 volt switch that must close before the pilot will light and prove its self. If this doesn't happen, the ignition will lock out after 3 times. Kill the power to reset the unit and turn up the thermostat and watch. If for some reason you loose power when you remove the panel, there will be a panel switch that opens and you will need to tape it closed to get power back on. It is a safety also, located on the panel perimeter. Do these checks and get back to me when you can to update me. Good Luck,
Shastalaker7
A/C, & Heating Contractor

Oct 17, 2010 | Coleman Heating & Cooling

1 Answer

Gas Furnace not working trips breaker


Does it trip the breaker when the safety switch is NOT pressed? I am trying to isolate where to look for the short circuit. Is it before the furnace, or after the furnace. If the breaker trips with the safety switch not depressed, the problem is not the furnace, and could be where power enters the furnace, or further upstream from the furnace.

Dec 13, 2009 | Ruud UBHC Air Conditioner

2 Answers

Preblower comes on, Ignitor lights up, but no flames. Control board blinks 6 times, indicating Open Rollout. What does this mean and what are the recommended fixes?


Roll out flames are a safety device on a furnace. On the furnace back up under where your burners are located, you will see a switch with a manual reset button on it. What is happening is the flames have rolled out further than they should have at one point during its cycle, and tripped this switch to keep the flames from burning the wiring and what ever it might reach.It is one of many safety's on you're furnace.Reset this switch, like I said, it would be where the flames would come out a little to far. Sometimes they will trip if you get a gust of wind down the flue pipe from the roof. Or, if the burners are getting plugged up with black soot.Check this also.Until the switch is reset, the burners will not come on. You should have no problem finding it, mounted just at the end and above the burners. Walk out side and make sure your flew cap is in place. I have found birds nesting in flew pipes that will cause this.Reset it and watch it for awhile to see how it burns.Don't worry, as that is why the switch is there, for you're safety. I am sorry for such a long solution, but it is called for on this problem. Please let me know how it turns out.
Sincerely, Shastalaker7

Nov 07, 2009 | Goodman GDS80904BNA Open Flame Heater

1 Answer

Change blower to down draft


I dont think you can change a gas furnace from horz/upflow to downdraft,the inducer motor would never prove the pressure switch, the drainpan would upside down,you can order a downdraft unit, i dont believe this unit is made for that

Sep 30, 2009 | Goodman GMS90703BXA Heater

1 Answer

Code 32 when wind blows


Hi and welcome to Fixya. I believe that the wind is affecting the draft. What I would recommend is to install a cap on the flue that is similar to a weather vane in that it rotates to block the wind from creating a downdraft in the flue. Some times depending on the direction and strength of the wind it will come up over the roof peak and then down the flue. A regular fixed cap may work too. You should be able to purchase one at your local hardware store. Please let me know if this was helpful. Good luck.

Jan 25, 2009 | Carrier XHB123D X/Y Series Heat/Cool Air...

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