I am having an issue with my heated bed not turning on or off automatically or with g code or acting automatically like a thermistat. Hotend is fine. I am running a separate PS through a FET board and so can easily monitor actual heater status via LED. I can turn bed on or off via console, that is push button control by setting PLA Bed Preheat, but it runs right past set temp. and will not turn off. Setting control higher or lower by console has no effect. Setting Cooldown on the console DOES turn it off - thus showing that it is under software control and 99% not a hardware issue. Commands from Repetier Host have no effect on the bed heater at all - either Repetier buttons or sending M140 commands manually, although they show up on the console LCD properly (that is - M140 50 shows 50 degrees is set on the LCD) But again, no action is taken when the actual bed temp runs right on past the set temp. I have changed everything I can think of in Marlin to no avail. I have set it to bang bang (I think) used different PIDs - Nothing. Any help will be appreciated.
Delta Mini-Kossel clone, Mega2560, Ramps 1.4
Delta Mini-Kossel clone, Mega2560, Ramps 1.4
