First of all I want to apologize for asking a question as my first post, I know this is terrible forum etiquette. With that said, please help me
for some reason, the last couple nights our furnace quits blowing heat at some point at night and just keeps moving air. the blower stays running but the fire isn't going so it's not heating. i've figured out that from the thermostat i can switch it to "off" wait a second then back to heat and it lights right up and heats up the house. but for some reason it either doesn't light at night or it goes out after it lights. i have checked and the fan is set to "AUTO" the thermostat is programmed to keep the house 70* at all times and jump to 72* at 6am when i wake up. the last 2 nights it has dropped to 66* by the time i wake up.
the furnace is a "Amana Air Command 80" and was the original in '92 when the house was built. from the stickers on it it doesn't look to be serviced since '08 so it might be time for one.
Any help is appreciated, don't really have the $ to call someone to come over if i can figure this out myself.