Model - WST-64211. Serial 6EH08539.
This one was completely dead and the compressor was cold when I arrived. I touched the little slider control and the green light went on. Upon further inspection I found that there seems to be a dead spot on the slider - either side of the dead spot and the light goes on and the unit runs, but on the dead spot - everything is off.
Is this a common issue? Fixed by replacing the control?