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Max temp. Fatal error message

Posted by Johndu 
Max temp. Fatal error message
August 17, 2016 04:09PM
My Prusa i3 is giving me a fatal error pop up message saying Ithe temperature needs to be reset, set it after restarting use code M999. The extruder shows a temp. Of 353.70 degrees without it being heated. How do I go about reset it in restarting? I'm pretty much a complete neophyte at this so any suggestions would help.
Many Thanks.
Re: Max temp. Fatal error message
August 19, 2016 01:46AM
This is a hardware fault

The thermistor on your hot end is shorted, probably the legs are touching, until it reads room temp it will continue to error
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