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Blower comes on igniter lites, no flame then shuts off then cylces again same results

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  • knightheatin May 11, 2010

    possible a gas problem, meters to your home do go bad esp.if very old. do you have a gas water heater- is it working if so, this would elminiate the main meter. also, a bad gas valve in furnace this is rare but i have seen it before. the only way to verify is to put a manometer tap on inlet/ outlet of gas valve this will tell you what is going on. like stated if your gas water heater is working that would elimiate the main meter in home. also do you have spark ignition or a glow hot surface ignitor.

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Bad gas valve, no gas getting to gas valve, restriction in air intake, bad electrical connection from board to gas valve, or a bad board. Make sure you have gas at other gas appliances. Weather changes could cause a regulator to stick closed (your gas company is responsible for that). You can always tap lightly on the gas valve in the furnace to dislodge any debris holding the valve closed. Make sure the switch position on the gas valve is on. Remove and reinstall the wires to the gas valve to make sure they have a good connection. Remove the air intake pipe (not the exhaust) or open up any access to the burner to allow a good air supply to the burner. Lastly, follow the wiring from the gas valve to the board. Remove the plug from the board and inspect for any corrosion.

Posted on Jan 31, 2010

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1 Answer

Furnace blower runs for a minute then shutdowns- no heat


If the flame does not come on it could be the igniter needs replacing. Some times if everything is set to go but if the flame does not light up then it automatically shuts down again. It is common to have to replace igniters.

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Lennox G20 gas valve switches off then on Intermittently?


This could be a dirty flane sencor of the pressure switch check hoses are tight and not spilt , try jumping out the pressure switch see if that makes it work also check air fliter is clean .

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1 Answer

Blower comes on igniter lites, burner comes on for about 5 sec.then shuts off then cylces again same results


More then likely the flame sensor. It is a small bar that is installed in front of the burners on the opposite side of the igniter. A lot of times you can take it out and clean it softly with sand paper or other abrasive materials, just to remove oxidation, etc. if that does not work, you may have to replace it. You can find these fairly cheap at a local heating and air conditioning supply store. Make sure all connections are also good coming from the control board. If a new flame sensor does not work, which is the cheaper fix to begin with, then you may have a bad control board. Hope this helps and good luck!

Nov 19, 2012 | Goodman Heating & Cooling

1 Answer

Igniter goes on blower runs for 30 seconds main heater flame ignites and burns for approx 30 seconds then it shuts down for approx 10 seconds and repeats the same sequence 3 times, then shuts down...


there should be a flame detector sensor. it is in the flame. this will need to be cleaned with a wire brush or scrapped with something to get the carbon build up off of it.
you will see something that in in the flame area that is kind of charred and black with a wire coming out of it.
this is designed to tell the unit that there is a flame present and if that flame is not there after serveral attempts it will shut it down. because it there was no flame there you would get gas fumes pumped into you house.
you could change it out or usually you can just clean it and it will work fine.

hope this helps
rick

Jul 15, 2011 | Kitchen Ranges

1 Answer

I turn on my furnace and the coil warms up and then the igniter comes on producing flame but only for about two seconds and then it goes out and the furnace just winds up blowing out cold air, after about...


It sounds like your blower motor is not firing up for some reason. This could be a circuit board issue or simply a dead blower motor. What is happening is that the system is basically sensing that the heat is not being "blown" to the rest of the house and it shuts it self off to prevent damage. After the flame comes on you should hear another motor come on. Also, most furnace's have whats called an error led that will blink when the system shuts off. Each blink represents a different error. You will probably get something about high heat limit reached.

Mar 01, 2011 | Heating & Cooling

1 Answer

Goodman gms80903bna light blinks once fan runs all the time,


I believe this code is ignition failure.
Turn power off and after 20 seconds turn power on with thermostat calling for heat. Vent blower should come on first. After a bit igniter should lite up. You should hear click noise of gas valve open up. If igniter does lite and you hear click noise, flame should come on for a few seconds minimum. If igniter doesn't lite and you hear click noise from gas valve, igniter is bad. If flame lites and then goes out, flame sensor probably needs cleaned. Both igniter and flame sensor are in metal plate under burners. Igniter has 2 wire going to it and flame sensor has one wire. If you think it is flame sensor you can remove with taking it out with 1 1/4" hex screw. Flame sensor will have white film on it if it needs cleaned, clean with steel wool or a dollar bill. If it isn't weither of these it is gas valve or circuit board.

Jan 27, 2011 | Goodman Heating & Cooling

1 Answer

The furnace model# DGAA070BDTB will ignite then almost immediately go out it will the ignite again then go out then the blower motor will come on it will then try to ignite again with blower on til the...


Is the flame spreading all the way across the burners within 2 seconds? If not clean the flame tray. If it is and the flame still goes out, you have either a poor ground wire connection or the circuit board is bad. Keep your chin up and thanks for helping others.

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The exhaust blower starts for about 15 seconds then shuts off. several minutes later, the same thing happens - over and over


goodman furnance the exhaust fan starts, igniter glows hot, all burners lite up & will burn for about a minute and shuts down . I think it senses the room blower does not start so it shuts down.

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