Question about Goodman GMS90703BXA Heater
I actually have a GMT070-3A model Goodman furnace, but my guess is that it's somewhat similar to this one regarding this problem. What happens inconsistently is that the heating element lights up when the unit is getting ready to start heating (blower has been running about 10 seconds or so and continues fine through all of this), but the element turns off prior to the point where the gas starts to be emitted. And of course, whatever sensor is in there won't supply gas without a hot element. If this cycles 3 times, I have to turn the power off to the unit before it will try again (another 3 times if need be -- usually starts up during the second go around). Again, this problem is inconsistent. And the heating element works, just turns off sooner than it should at times. Not sure what's causing this or what to check/replace. Thanks for your time with this!
He is right. the flame sensor is the culprit
Posted on Feb 28, 2007
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Well, I think this one does. The gas appears to be ignited by the glowing heating element, and if the element isn't lit when it's time for the gas, the gas doesn't come out.
Can you describe how to check the sequencers? Not sure exactly what/where those are. There's a circuit board in the bottom part of the furnace. Otherwise in the top part, there's the blower assembly, gas control apparatus stuff attached to end of supply pipe, heating element, 2 roll-off switches (not sure what these do, but that's what the manual calls them), and a flame sensor (on the opposite side of the gas-jet assembly from the ignitor).
Just checked the part heating element part. It's called a "Hot Surface Ignitor" in the Goodman repair parts document.
I have a goodman gmt070-3 when the thermostat runs a program the igniter turns on and the blower comes on then after about 10 seconds it shuts off because the gas doesn't ignite. It does this 3 times then it stops completely. I then recycle the thermostat turn it off then on then hold the temperture at 75 and the system ignites and runs fine.But it then turns on and of speatically. Can anyone help?
I think it might be then flame sensor?
Thank you
GMS9/GCS9 Warm Air Furnance
I have a Goodman Furnace (model GMT N060-3. My problem is that it does not ignite during the daytime. The ignitor will glow but it will not flame up and run. after about 2 minutes it shuts down and does not run. The induction motor starts up and the glow element lights up , but it just want fire up and produce heat. It appears to work at night after 7:00 pm but will not start up during the day.
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