Another thread on Furnace Dinosaur Board
The front furnace in our 95 300 was acting up - usually the igniter would fire the gas but sometimes the fan would continue to blow cold air. I determined that the board was the likely problem and ordered a replacement from Dinosaur. This furnace is an Atwood 8516-III. The Dinosaur board is their UIB-S. Cost is $88 Amazon Prime.
It's easy to remove the old board:
1. Disable 12V;
2. Click the on/off button out of its frame;
3. Unscrew the thumb screw that holds the board in place and pull it free;
4. Unscrew the old board and screw the new one (2 screws).
I just had one issue. The new board comes with brass bushings or standoffs in each of its four holes. If you leave them in, it's difficult to get the board back in place. I drilled out the two offenders and drilled the plastic mount for two larger screws. That way it fit just fine.
The arrow in the photo points to one of the brass bushings.
The UIB (universal) board comes in two sizes: UIB-S (small) and UIB-L (large). The small measures 3 1/4" x 4 1/4" and the large measures 3 1/2" x 5"
jor
John..
Did you wire in that on/off switch.???
Thx
Hans
Nope. That's stock. Same on the back furnace.
jor
Dinosaur makes excellent boards for water heaters and fridges also. Good prices compared to OEM. They may have a 10 second delay so don't be surprised if the furnace does not light immediately. I had to re-read the directions before I figured that one out.
Pierce
you used the small board?
Neither of my furnaces works. I will diagnose further when it is not 90 degrees and solid humidity out.
like next week when I am in Maine.
Maybe I will take a board with me in case that's what is needed.
Matt,
No need to reinvent the wheel - we who have gone before you are pleased to share our experience:
Need Hydro Flame Furnace Burner (http://www.foreforums.com/index.php?topic=23119.msg179529#msg179529)
The dinosaur board will let the appliance try and light 3 times before it locks out ,a nice feature over the stock board which locks out after one try.
Matt, yes mine takes the small board.
Actually, I have the opposite opinion. I'm joyful when a search yields many posts. I'm not a fan of the "just do a search" reply. The more the merrier.
jor
I'm not saying "don't do a search", or "don't do your own research". But, if you are trying to puzzle out why a particular piece of equipment doesn't work, and other members have already completely dissected and successfully repaired said piece of equipment, why not avail yourself of that knowledge base? The OP could have chanced across my thread entirely on his own - I was just trying to save him a little time.
Thanks the the link. I "printed to pdf" those threads and saved the manual so I can read/troubleshoot in the backwoods of Maine next week with no internet connection or cell signal. Ive come across plenty of furnace diagnostic threads and am pretty competent with electrical issues. More than likely an electrical issue since my coach was basically unused prior to my purchase. Front does absolutely nothing and the rear one just runs the blower.
Just my two cents: The Dinosaur board is hands down the best! It got so that when I replaced something in the Airstream, the stock, junk boards came out and replaced with a Dinosaur. Trouble-free for me. ;D