Check to see if the ignitor glows red. If not, then you have a bad ignitor or a pressure switch issue. But if the blower comes on, that is usually an ignitor problem.
There is a control panel on the bottom of that furnace that will have an LED and it will flash an error code. The error code descriptions are on the door of the furnace or on the board itself.
Turn the furnace on and see what happens. I need to know what works.
The blower sends out cold air, I have taken the panel off of the bottom, and the LED light blinks 4 times and stops then blinks 4 times again and stops. The panel has the if it blinks 4 times that the Main switch or the AUX switch is not working. I looked for a reset bottom and I am not sure whereit is. There are 3 different bottoms that are all contacted purple wire that looks like they all go to the AUX according to the diagram and there are 7 wires there.
You will need to power the furnace off, then back on. I want you to watch the startup procedure. This is what should happen:
1. The inducer fan should start, this is the little black fan at the top of the furnace
2. The ignitor will glow bright red, this may take 10 - 15 seconds
3. The gas valve will open
4. The burners will ignite
5. The blower will come on.
How far does your furnace get?
Okay. You need to turn the power at the furnace off.
You need a multimeter so you can check continuity. Do you see anything that looks like this:
This is a flame rollout switch or a limit switch. Try pressing the red button in the center.
You may also have one of these right below the inducer fan housing. This is a high limit switch and you will only see the cardboard and the terminals, the rest of it sits in the furnace. If you have one, take the wires off of the end and see if you have continuity between the terminals.
What should the meter say for the continuity between the connections. should there be a specific numberon the meter.