Blower will not go off even after completley unhooking the thermostat. Runs 24-7.

You will likely need a HVAC pro to look at your integrated furnace control board. In the meantime do not worry. I set my stat to ran the fan 24/7, using only a small amount more of electrcity and makes the home more comfortable.

If the blower is on all the time and the heat is not working you have a safety switch open. The control board should have a flashing light to give the fault. If the heat works and the blower runs all the time you have a stuck blower relay. You can unhook the thermostat wire on the control board G circuit to make sure you don't have the green and red thermostat wire shorted together.

2000 Newmar Mountain Aire furnace blower will blow cold air and cannot get any heat.