Hello I am here to assist you.
This furnace does not have a standing pilot light that is manually lit.
It has a autmatic igniter.
Is the fan working on the furnace?
The fan is working.
It comes on but there is no heat, just cold air. It was working this morning.
August. We change it every six months. It's 4 inches thick.
Ok. Is that behind the lower panel?
Ok. Should I turn it on to observe?
I am unable to loosen one of the screws to take the top panel off. It doesn't sound like it's trying to ignite but it is running, fan not on at the moment though.
We will not be able to continue if you cant get the panel off.
My son-in-law will b here to help in a moment.
We have both panels off now.
We took top panel off & for some reason it's now working again. Thanks for attempting to help.