I have an Amana furnace about 18 years old. 3 years ago the ignitor went bad. I had it replaced and it worked fine for 1 month and then stopped. The repairman assured me that the ignitor was not the issue and that maybe the exhaust (inducer) was not working. Or perhaps the pressure switch. I had just installed a fireplace insert and decided(because of funds) to heat with wood and space heaters. Well that was about three years ago. Now I want to start using the furnace again. It is propane fuel. So I checked the inducer fan and it was toast. So I replaced. Now fan comes on but does not ingnite. So I jumped the pressure switch (which I tricked by jumping about 5 seconds after fan turns on) and I hear the gas valve open a clicking noise from Inside furnace. (ignitor?) But still no flame. Is there a chance that that gas line has to purge itself? Should I cycle through several times? I am going to buy another pressure switch but being the unit is 18 years old I want to make sure thats it. The fan ran 300.00. Can anyone help me? Gary. Thanks.