# Temperature reset before print started

**URL:** <https://3dprintingspace.com/t/temperature-reset-before-print-started/2443>\
**Category:** BigTreeTech Biqu B1\
**Created:** [May 2, 2021, 5:49pm UTC](https://3dprintingspace.com/t/temperature-reset-before-print-started/2443 "2021-05-02T17:49:24Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Glenn](https://3dps-assets.b-cdn.net/user_avatar/3dprintingspace.com/glenn/32/728_2.png) [@Glenn](https://3dprintingspace.com/u/Glenn)\
**Post date:** [May 2, 2021, 5:49pm UTC](https://3dprintingspace.com/t/temperature-reset-before-print-started/2443/1 "2021-05-02T17:49:25Z")

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So there is an STL file I sliced in prusaslicer and when I went to print it did my usual start gcode which has a purge line in it before it prints the file when it went to print the purge line it set both heaters to zero. That’s never happened before so I resliced it and compared the files and they are identical, it worked fine the second time. Any idea what would cause the reset of both heaters?