Gas and Oil Home Heating Furnaces - One of Four burners doesn't ignite

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leadarrows
10-26-03, 06:08 PM
I have a 8 year old Amana Air Command 80 SSE furnace.
It burns propane. It's a two story 100 year old farm house but only the down stares is ducted. the furnace is in the basement mounted laying on its side.
I just replaced the flew last year. It ran fine all last year.
I did a search and found out about the "The flame sensor is an element that is often located in the flames of one of the burners. "
This is relevant to my situation I believe.
What seems to be happing is the burners all ignite except the bottom one. The bottom one is the one with the one wire going to a rod like the one described in this thread.
http://forum.doityourself.com/showthread.php?postid=496976

So my question is why is the one burner not igniting? I took the burner jet assembly off and the brass jets are clean. They still look new. The burners seem to be ok a little rust but not bad.
I thought about low pressure but I don't know how or have tester for that. I wouldn't know how much pressure was correct anyway.
I started the furnace up with the door off so I could watch and when the bottom burner ignites it runs like it should but when the bottom burner doesn't light it goes out within 3 seconds.
Which is most of the time. Is this enough info or not?
Thanks in advance for any help you might be able to provide.:)


hvac4u
10-26-03, 07:21 PM
common problem, especially with propane. remove and clean the "carryover" slot that transfers the flame to the next burner. those burners are cheap...i would replace it if cleaning did not work