Goodman GMP100-3 Forced air furnace

nvr2low · 11-19-2010, 10:14 PM

ok, back with a new issue.

so i have an intermittent issue, the house seams to stay at the temp but every once in a while my furnace wont work until i reset it and right now that is not fixing it. the fan turns on, the igniter turns on, gas doesn't light. cycles 3 times then shuts down and blinks one time. once in a while the gas will ignite for a couple seconds then shut down with the same error. I am at a loss with this one, i cleaned the flame sensor but that is obviously not the issue because the flame is not turning on.

any ideas before i have to spend more moeny than i can afford to have a pro look at it?

kenmac · 11-19-2010, 10:40 PM

Use VM to see where your loosing 24v. If it's firing up & going out . it's not sensing flame causing it to go out. or your loosing 24v to the gv from another source

nvr2low · 11-19-2010, 10:43 PM

well i was probing around the valve looking for the voltage and it fired up and is working now. wondering if the connection is funky even though it looks ok. guess i need to schedule a tune up.

kenmac · 11-19-2010, 10:49 PM

have you had the connections off ? do they feel loose ?

nvr2low · 11-19-2010, 11:15 PM

took them off, they are fine. i do electronics for a living so that i am sure of. it is running fine now, has been on and off for the last hour and a half with no issues. i think i just need to schedule a cleaning since i don't really know how to do it my self and i am a bit nervous messing with gas.