![]() They open very firmly and I get good flow through them.ĥ) Switched to the other full propane tank (dual tank setup w/ automatic switchover regulator), but that didn't help. I rigged it up so I could see the spark on the electrode outside the burner box, and I get 1 single spark at exactly the same time as the gas valves open each time.Ĥ) Verified gas valves are opening by gently blowing through them and putting 12V on the coils. Spark gap on the electrode is right at 1/8". and electrode to inspect them and found them to be very clean and in good shape. This happens 3 times as the manual indicates it should, but no ignition occurs.ģ) I removed the burner assy. They open up again a few seconds later, then close again in about 5 seconds or so. Through the overtemp switch, through the sail switch, and onto the DSI board.Ģ) Blower comes on like normal for a few seconds and then I can hear the gas valves open up with a solid 'click'. Voltage seems to be getting to where it needs to be. Here's what I've done / observed:ġ) I jumpered out my thermostat to force it on (it's still 100 degrees here in Phoenix today & thermostat won't go that high). Decided I'd finally have a look at it today before the weather cools off again up in the high country. Furnace was working fine when I went to bed, but midway through the night I noticed it was only blowing and not firing. This all started one night last spring on a chilly night in the mountains. ![]() It seems like everything is working as it should, but I can't get it to ignite. This is on a '97 Jayco with Atwood 79 series DSI type furnace. Like several others in the past, I have a problem where my furnace blows, but will not ignite. OK gang, I've been searching high and low and still haven't found the one piece of information I need. ![]()
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