Question about Goodman Furnace Draft Inducer Blower Fasco # A285

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I have a goodman gmnt 100 b furnace 2 stage when the gave valve turns on and floods the heat exchanger with flame then the squirl cage fan turns on and i loose the the flame

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  • Ken Thomas May 11, 2010

    Remove thermostat to isolate furnace and connect red and white wires together. if runs normally the t-stat was bad. May need to adjust heat anticipator if it has one. Old model t-stats only. Replace with new digital one is easier. Overheating from dirty filter or lack of airflow? circuit board should flash code with red light. look inside door panel to find code meaning. more info. will aid in solving

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Cjfmc is right!
These heat exchangers can become defective in the first year of operation. They don't tell you that at salestime.

Posted on Jul 25, 2010

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If you are getting flame distortion when the blower comes on it usually means a cracked heat exchanger which can lead to carbon monoxide, get your furnace checked by a qualified tech..

Posted on Apr 04, 2010

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1 Answer

New furnace, Water In Induction Motor, Yellow Flame


The problem is too much gas as opposed to not enough air. It is still running rich. Did you take into account the elevation of the location your furnace is installed at. The higher above sea level the less air that you have to aid in cumbustion. The condensation is from excess gas being cold and causing water to accumulate. Can you run it like this? Yes but it will cause issues with soot and carbon deposits. It will also cost you more money in the long run.

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I have a goodman gmpn that the middle burner has a little bit of flame rollout it kicks the flame sensor switch after about 1-2 minutes then it will not cycle back on. The flames are perfect until the main...


Unfortunately that means there's a hole in the heat exchanger, particularly in that cell of it. When the main blower comes on the air is pushed into the heat exchanger, causing the flame rollout. A heat exchanger crack or blowout is usually what condemns a furnace for good. Goodmans however, have a lifetime warranty on their heat exchangers, so you'll probably be able to find someone to replace it pretty cheap, or do it yourself for free.

Nov 04, 2011 | Goodman GMS90703BXA Heater

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Rollout switch continues to trip


If you have a cracked heat exchanger this will cause the flames to rollout and trip this switch. Its meant to stop the furnace from running and putting carbon monoxide in your home. Watch the furnace as it tries to light if when the gas valve opens and flame is established it should go into the tubes heat the heat exchanger and then your main blower motor will come on. When your main blower comes on is usually when you see the flames rollout and trip that switch. If this happens you can either buy a heat exchanger or new furnace if its a older unit Obama still has that awesome tax credit til 12-31-2010.

Dec 13, 2010 | Goodman Heating & Cooling

1 Answer

My circuirt board has a rapid flashigh trouble light, and the blower does not shut off. What seems to be the problem?


with just the information you have provided, i would guess you have a rollout sensor somewhere that has been tripped. there are usually a push button reset on the goodman models. this usually happens when you have flame outside the heat exchanger and is not a good thing. i have seen some goodmans where the wiring for the safety sensors is melted from the flame rolling out due to a crack in the heat exchanger. it this is the case, you need to replace the heat exchanger or consider getting a new furnace. the safety wiring on most goodmans is usually purple. trace all the purlple wiring and see if some of it is melted or if any of the push button switches has tripped. on a high efficiency model, there will be several wires and rollout switches located along the top of the burner box above the burners.
good luck. by the way, anytime a safety has been tripped, the fan will default to the on postion as a precaution in case the furnace has got too hot. that may explain the fan running all the time.

Nov 20, 2010 | Goodman GDS80904BNA Open Flame Heater

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Goodman GMNT 60 Furnace. Burners shut off after a minute and will not re-light. Board has one blink code says gas valve or flame sensor problem. Replaced flame sensor. Gas valve has a steady 24 volts and...


No, the board isnt out. The board has a code telling you that its out. Its your flame sensor. You wouldn't have gotten any heat if the gas valve was out. check if that flame sensor goes to another sensor on the same circuit , if it does check that. If it just a one wire sensor make sure its in the right position. If its a one rod flame senor with one wire I would sand it down with sandpaper. if its a two wire senor ohm it out to see if you ger current going through it.


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Oct 16, 2009 | Goodman Heating & Cooling

2 Answers

I had a friend install my new Goodman GMH950704CX 95% 92,000btu 2-stage multi speed furnace. When I switch the thermostat to HEAT and turn it up to 80 degrees, the inducer fan comes on, then the igniter...


he didnt hook up the secondary heat exchanger drain properly. common mistake and he probably threw away the bag of parts to do it which came with the furnace . loook at your installation instructions

Sep 29, 2009 | Goodman GMS90703BXA Heater

1 Answer

I have a goodman GMNT gas furnace Propane it lights off I have a blue flame for about 3 seconds I hear a click on the circuit board and the flame goes out this is doing it constantly. could you please help...


Hi!!! If the flame turns on then off and on then you should change your flame sensor on the gas furnace..YEs flame sensor is shorted..The flame sensor is located by the valve burners it has one wire and is white..Good luck..

Jan 03, 2009 | Heating & Cooling

1 Answer

Support on changing out the heat exchanger on gmnt 080


1st, take a picture of where each wire goes to. Look in the owners manual for an exploded view of how it goes together. The heat exchanger most likely comes out from the front of the furnace. You will have to remove and reinstall every componant inside the furnace to get it out. Suggestion, replace the whole furnace. It will be cheaper.

Sep 18, 2008 | Goodman Heating & Cooling

1 Answer

I cannot remove the General electric motor from my Goodman furnace


Oil the Day Lights out of it. Take Entire Squirl Cage out as one assembly so you can work with it. Use penatrating oil for days before trying to remove . You can accelerate the process with blow torch heat oil repeatedly. Loosen hex allen screw Hold shaft twist fan assembly to try to break free use a punch and hammer to push shaft out. Good luck

Jun 06, 2008 | Heating & Cooling

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