If it is the actual gas orifce you are wanting, I bought one of these a month ago. Atwood 92742 Orifice Main Burner. https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
You can clean the orifice. Do not poke the hole though as if it scratches it, it may no longer work. You can unscrew the orifice from the holder and soak it in isopropyl alcohol. You can hold it up to a light and look through it maybe. A magnifying glass will help.
The holder for the orifce normally does not go bad, but anything is possible if it is corroded. This is the one I come up with on your model Atwood 91563 https://www.amazon.com/Atwood-91563-...omotive&sr=1-1
I do see the wording on the Panther diagram showing those 2 parts have now been replaced, my book is older and may not be up to date on the latest, but I was still able to buy the older parts by their numbers.
Try and tell us what the heater is doing on gas. Be a specific as possible in tiny steps from the time the gas valve opens until the flame goes out and or ideally a short video if at all possible on a cell phone.
Has your friend taken the burner tube out and looked through it/cleaned it? I'm assuming he may have as it is one of the first things to do.
If it will start to burn, is the flame nice and blue or very yellow?
How long does it burn for before it goes out? Time it with a cell phone stopwatch.
When the flame goes out, tell us what happens? Do you hear a clunk of the gas valve turning off instantly when the flame goes out or does the gas valve take a few seconds to go clunk after the flame when out?
Does the little red DSI light ever go on, on the tank panel in the camper when the flame goes out?
Add more to this. We need more to go on to help better.
Also, tell us when the last time it worked on LP gas, how long ago, did it work OK then? Trying to back into when it worked or and what happened to maybe cause it to stop working on gas
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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