Tried starting it up with the door open. The smoker still only produced smoke without any fire and eventually a ErL code came up
is your fire pot cleaned out completely?
ash can build up and cover the ignitor, or even the air flow holes in the sides of the fire pot. (make sure they are not blocked)
if you are getting smoke, the ignitor is getting hot, the fan needs to be running too, make sure it is.
if not, contact Pit Boss for a replacement fan.
I would take everything out of the smoker and try it so you can see just what is going on inside.
the auger needs to turn, the fan needs to blow air and the ignitor needs to get hot enough to burn pellets, it will produce lots of smoke and the forced air will cause ignition of the pellets, (fire in the pot). also make sure the air intake screen is clear and getting good air flow.
hope this helps, if all else fails, Call Pit Boss.
you can also make sure all the wire connections are good, check the little plugs for good contact.