Here is my setup
e3d -v6 Hotend
and wired the hotend fan to extruder fan 2
and set EXTRUDER_FAN_SETUP 4
and left default settings for the extruder fan
Here is what I am experiencing, the hotend fan is now coming on at random for variable periods of time when below 50c, and it turns on when the extruder heats up to 50c
Now I have observed that when I unplug the temp sensor for the heat bed the random spin ups of the extruder fan when below 50c stop.
Any ideas on what is going on and how to stop the random spin ups?
Does it have anything to do with EXTRUDER_1_AUTO_FAN_PIN EX_FAN_1:
// Extruder cooling fans // Configure fan pin outputs to automatically turn on/off when the associated // extruder temperature is above/below EXTRUDER_AUTO_FAN_TEMPERATURE. // Multiple extruders can be assigned to the same pin in which case // the fan will turn on when any selected extruder is above the threshold. #define EXTRUDER_0_AUTO_FAN_PIN EX_FAN_1 #define EXTRUDER_1_AUTO_FAN_PIN EX_FAN_1 #define EXTRUDER_2_AUTO_FAN_PIN -1
and that there are times that the temp for the heatbed sometimes appears to be registered as an extruder in different menu settings in the TAZ…