Unit_2
Guest
This could be a long shot but when I was running 1688s I had something similar. The gentlemen with ProHarvest told me my reel height switch was bad. To check and make sure they told me to set the reel about where I was normally runing it and unhook the hose so it would stay at that height. Than unplug the wire going to the reel height switch and cut wheat to see if the unloading auger would work right. It did, so I went to town and bought a new reel height switch. Problem solved. It seems rediculious but I guess the unloading auger wireing runs through the reel switch. Good luck!!