I have the basic Honeywell thermostat that a lot of people have. All the thermostat wires go to the blower in the attic (for the central air). They are spliced with wires that then go to the furnace.
Everything going was fine until Saturday, when the AC wouldn't work. That's a different issue. While looking in the furnace, and replacing the door, the white wire was cut by the metal door. I bypassed that cut by splicing the wires, but the furnace still won't kick on.
What should I do to troubleshoot and repair it?