marlin 1.16 flashed to 1.19, extruder now no function

auch über das Menü Achsen bewegen funktioniert E nicht.
x , Y, Z ist ok

E does not work via the Move axes menu either.
x, Y, Z is ok

#define MOTHERBOARD BOARD_MELZI_CREALITY
// This defines the number of extruders
// :[1, 2, 3, 4, 5]
#define EXTRUDERS 1
#define DEFAULT_AXIS_STEPS_PER_UNIT { 80, 80, 400, 95 }
#define DEFAULT_MAX_FEEDRATE { 500, 500, 15, 25 }
#define DEFAULT_MAX_ACCELERATION { 500, 500, 100, 5000 }
// For direct drive extruder v9 set to true, for geared extruder set to false.
#define INVERT_E0_DIR true
#define INVERT_E1_DIR false
#define INVERT_E2_DIR false
#define INVERT_E3_DIR false
#define INVERT_E4_DIR false

Edited 3 time(s). Last edit at 10/14/2021 08:20AM by siha49.

E hotend needs to be hot, before E will move.

Or you need to disable this safety feature

Edited 1 time(s). Last edit at 10/14/2021 08:18AM by Dust.

E hotend set to 180C with potentiometer 100K

#define PREVENT_COLD_EXTRUSION
#define EXTRUDE_MINTEMP 170

Edited 2 time(s). Last edit at 10/14/2021 08:28AM by siha49.

Sorry, I found bugs