I had a Luxaire gas furnace installed this past August. I have had a problem with this furnace lately. The ignitor comes on and it will blow warm air for about 1 1/2 hours them the ignitor shuts off and the blower will blow cool air for about 30 to 45 minutes. The furnace has to be "reset" it order for it to ignite and blow warm air again.

I appreciate any advice or known problems with make/model. It is a Luxaire TG8S080B12MP11A. Thanks.