Hi,
I am getting the following error infrequently with my D300VS, E3DV6:
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Error: heating fault on heater 1, temperature rising much more slowly than the expected 0.3°C/sec
This occurs with the stock settings for the hotend, provided with the 1.19.2 firmware, installed about a week ago:
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M307 H1 A512.9 C267.0 D9.0 B0 ; Heater 1 (hot end) use PID
It appears to be related to a bump in the fan speed -- when going from 70 to 90%, perhaps. The temp drops, but not below 10° below the set temp, and doesn't recover. What are your recommendations?