Quick update from last night. Got back to work on the heater and restarted it to listen to the alarm code beep.
Carefully counted 18 beeps, instead of the previous 16 I thought I heard.
18 means battery temp sensor fault. I just built the battery with the 5.7 ohm resistor so lets start there. Looked at the plug and noticed one of the pins was not seated all the way in and was not making contact. I little work and the pin seated and lets retry. Made it all the way thru the startup cycle only to fault out on code 3 fuel system. All looked good but I think I did no have enough head pressure on my fuel can to push the fuel to the system, as my float was dry. Set heater on the ground for my final try and the damn battery was too low to start. that was after about 10 test starts. the battery is charging and I will fire it up tonight and let you all know then outcome.
When you do a dry start (hasn't had fuel in it for a while), you will need to do 2-3 start cycles to purge air out of the fuel system. Every heater I have had has done this-- you are well on your way to having it running. Also, you need a height difference between the can and the heater to generate enough fuel flow as it is gravity fed.