Original message
| Larry66
 |  "Goodman Furnace Doesn't Stay on"
, posted Mon 28 Nov 17:14  
I have a four year old GMNT100-4 Furnace. I started using it again about a month ago and noticed that it doesn't stay on. When you first ask for heat (via programmed thermostat or manually) the furnace works properly. After about 15-20 minutes it shuts off. After about an hour the furnace will come back on. I replaced the air filter and looked inside for any fault codes. Everything looks normal.
Any ideas?
Thank you,
Larry
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Replies:
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| aircooled
|  "Re(1):Goodman Furnace Doesn't Stay on"
, posted Thu 22 Dec 16:12
Well, it could be a number of things if the furnaces works for 15 minutes, sounds like high limit control, but I am not there so my suggestion would be to call for service and have it checked for your safety..
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