Like I said 4 flashes, is usually limit switch

My filter is fine I've been changing that frequently

I got the flame sensor out and it is real dirty I'm going to clean it and put back in

OK well try the flame sensor, and while you are down there look on the back of the furnace doors for the fault code chart and see if it matches what you found online. And get back too me. I am usually on here in the morning around 8 and in the evenings for a hr or so.. josh

Where's the limit switch?

Josh I'm in Ohio, my dad is an WVU alumni

Thanks Mike

Nice, what town?

http://www.hvacpartsoutlet.com/Produ...SLB1370902.JPG

Above the gas valve and the ventor motor. Usually on the right side of the furnace

Columbus home of the Buckeyes!!

Go buckeyes, any school that hates Michigan as much as wvu is OK by me. Lol

Yeah I hate to wish bad luck on anyone, but the way he left WVU and went to Mich was all wrong

Yo Josh after cleaning the flame sensor my furnace has been working fine even though the error code says the swith is open. Thanks again, you r the man

Glad it works, not sure why the code is still flashing.

Does your fan, blower run all the time?

The blower doesn't run all the time and the error light has stopped flashing and its been working fine since the cleaning of the flame sensor.

Thanks again

Great if you have any more problems look me up.