E1 heating failed & g-Code

[Pablo Alonso Fonseca Ríos]

hello thanks for the help, I have this problem "E1 heating failed" and I can't solve it. Also would you be so kind to check the G-code, I would like to know if it is correct. Thks

star

G28 ;Home

G1 Z15.0 F1800

;Prime the extruder

G92 E0

;G1 F1200 E1

M302 S0 ; always allow extrusion (disable checking)

M163 S0 P0.5 ; Set Mix Factor

M163 S1 P0.5 ; Set Mix Factor

end_

;M104 S0

;M140 S0

;Retract the filament

G92 E1

;G1 E-1 F300

G28

M82