We have an old Williamson Oil Furnace. I'm not sure of the age, we bought the house 2 years ago. 3 days ago, it didn't come on, when the thermostat was turned up. The reset switch worked to get it started 2 mornings in a row, but now nothing. You can hear it trying to come on when the thermostat is turned up. What could the problem be and is there anything we can do ourselves? THANKS!
