I am not sure where you are at fully with this, but. Pots only work conventional. If using DCS must turn smoke off with the feature.
You can go in and unplug the smoke unit to remove it as an issue. Problems like this can be a bad drawbar connection. Bad terminal crimp on a wire to the drawbar either tender or engine. Bad software install. Bad board. Bad motor drawing too much current. Bad AC power in. So very specific behavior needs to be reported to help, but had to diagnose this from afar. I would concentrate on the wiring through drawbar and drawbar.
You won't see a PS-3 tender board for several months if not a year or more. Production first, outstanding warranty next, Dealer order outstanding from old MTH company, followed by the new parts company. G
