extruder overheating

[ant311]

hi all. my i3 pro b's extruder seems to be overheating, the thermistor seems to be working fine, but keep getting a m999 error, the lcd and software both show the set temp and the temp of the extruder,
is this a board fail or firmware ?
could someone please help thanks

[Mark]

Did you see any MAX/MIN temp error on the LCD? I think you need to check this link to check the mainboard and thermistors:
http://www.geeetech.com/forum/viewtopic ... 23&t=17030

[ant311]

I did, max temp message on lcd ,

[Admin]

did you check the solder or the thermistor?
please upload some pohotos

[ant311]

All sorted the thermistor was at fault

[Admin]

if so, you can buy a thermistor at your local store or contact the after sale service to send you the replacement