Geeetech

I have just brought a a30 pro single extrusion printer. I have printed calibration cubes etc, prints no problem. Now I'm trying something bigger after a while during printing, the printer displays "hotend too cold to change filament, please check", the machine then homes itself, its like the extrude...

HI, i have just purchased a A30 pro single extruder, into a 13 hour print, the machine homes by its self, and says Hotend to cold to change filamnet. I have not tried or want to change filament. I click for it to resume print, 5 minutes later it does it again. what is up, i have the filament sensor ...