Rostock Max V2 goes to DEF DEF when bed is above 90C

Having a problem? Post it here and someone will be along shortly to help
Post Reply
TFMike
Printmaster!
Posts: 306
Joined: Fri Nov 15, 2013 9:11 pm

Rostock Max V2 goes to DEF DEF when bed is above 90C

Post by TFMike » Tue Sep 22, 2015 7:12 pm

I normally print around 70-80C bed temperature, but without an enclosure, printing with ABS needs a bit hotter bed temp. So I had been experimenting the last few days with temps at and above 100C, but I noticed something extremeley strange - halfway through the print the lcd screen will read DEF for both the hotend and the bed. Its not the hotend because when I flip the on/off switch quickly the temp readings return.

So the only thing I can think of is that I made an error when I installed the thermistor and heating resistor to the heated bed, but what could it be and how do I fix it/troubleshoot it?


Any help is appreciated, thanks.

User avatar
geneb
ULTIMATE 3D JEDDI
Posts: 4993
Joined: Mon Oct 15, 2012 12:47 pm
Location: Graham, WA
Contact:

Re: Rostock Max V2 goes to DEF DEF when bed is above 90C

Post by geneb » Wed Sep 23, 2015 9:07 am

"def" shows up when one or both of the thermistors are bad or disconnected. When the "def" (defective) label appears, does it do it at the same nozzle height?

g.
Delta Power!
Defeat the Cartesian Agenda!
http://www.f15sim.com - 80-0007, The only one of its kind.
http://geneb.simpits.org - Technical and Simulator Projects

TFMike
Printmaster!
Posts: 306
Joined: Fri Nov 15, 2013 9:11 pm

Re: Rostock Max V2 goes to DEF DEF when bed is above 90C

Post by TFMike » Thu Sep 24, 2015 4:46 pm

I dunno, thats a good question actually. I have tightened the the conenction on the hotend thermistor and I can try to print something else and see if it happens again. Why would it short out at a certain height though and not another?

User avatar
geneb
ULTIMATE 3D JEDDI
Posts: 4993
Joined: Mon Oct 15, 2012 12:47 pm
Location: Graham, WA
Contact:

Re: Rostock Max V2 goes to DEF DEF when bed is above 90C

Post by geneb » Thu Sep 24, 2015 5:46 pm

Might be a break in the wire that only separates when the wire is at a certain bend angle.

g.
Delta Power!
Defeat the Cartesian Agenda!
http://www.f15sim.com - 80-0007, The only one of its kind.
http://geneb.simpits.org - Technical and Simulator Projects

User avatar
Eaglezsoar
ULTIMATE 3D JEDDI
Posts: 7185
Joined: Sun Apr 01, 2012 5:26 pm

Re: Rostock Max V2 goes to DEF DEF when bed is above 90C

Post by Eaglezsoar » Thu Sep 24, 2015 6:03 pm

TFMike wrote:I normally print around 70-80C bed temperature, but without an enclosure, printing with ABS needs a bit hotter bed temp. So I had been experimenting the last few days with temps at and above 100C, but I noticed something extremeley strange - halfway through the print the lcd screen will read DEF for both the hotend and the bed. Its not the hotend because when I flip the on/off switch quickly the temp readings return.

So the only thing I can think of is that I made an error when I installed the thermistor and heating resistor to the heated bed, but what could it be and how do I fix it/troubleshoot it?


Any help is appreciated, thanks.


Have you found and fixed the problem?

Post Reply

Return to “Troubleshooting”