Have above titled icemachine running recirc pump and drain pump, but no compressor. After drain pump kicks in can hear click from relay board.
If unplug icemachine from drain pump, and plug directly into house outlet the unit will run. We removed drain resivoir, and flushed out and cleaned screw "sensors". Reinstallled resivoir same thing, unit go through purge and fill, but then "click" unit just keeps restarting. Of course whirlpool doesn't provide any info on the drain pump although it being pretty simple. Not sure why unit works if not plugged into drain pump. Outlet on pump shows solid 121 volts properly polarized and grounded.