:confused:We can hear the fan turn on and the thermostat is much lower then what heat is turned to. It usually kicks on, but it does nothing. The fan runs for a little while and then just turns off and no air is blown either hot or cold. There is no pilot light on our unit, it's an electronic ignition.
There is a red light on the circuit board that blinks 3 times pauses and then blinks again.
Please help

Our furnace is a Goodman and is 2 years old. The fan was making a screeching noise earlier today and now we don't have any heat.

If it was making that kind of noise I would suspect a bad fan motor. Being only two years old it is probably under warranty for the part. Contact the company you bought it from.

Thanks, in the door the 3 blinking lights indicate "Pressure switch stuck open" would that have anything to do with the fan motor?

The pressure switch is not closing but stuck open. The inducer fan could cause this.