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Heated bed thermal protection can be tuned with these sub-options.
The first two options deal with continuous thermal protection during an entire print job.
The second set of options applies to changes in target temperature. Whenever an M140 or M190 increases the target temperature the firmware will wait for the WATCH_BED_TEMP_PERIOD to expire, and if the temperature hasn’t increased by WATCH_BED_TEMP_INCREASE degrees, the machine is halted, requiring a hard reset. This test restarts with any M140/M190, but only if the current temperature is far enough below the target for a reliable test.
If you get too many “Heating failed” errors, increase WATCH_BED_TEMP_PERIOD and/or decrease WATCH_BED_TEMP_INCREASE. (WATCH_BED_TEMP_INCREASE should not be set below 2.)
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