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I have an issue with my Flashforge Adventurer 3. When printing with ABS, the bed temperature is not going over 89 °C. Additionally, when I connect to the printer with Flashprint, it displays a negative bed temperature (when I connect to the printer, the bed temperature is displayed as -11 °C).

Is it somehow possible to calibrate the temperature? Or is there any other solution for this issue?

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    $\begingroup$ Welcome to 3DPrinting.SE! Note that many beds will not reach the 100 °C mark. Insulation sometimes makes a difference. What is more concerning is the negative bed temperature, this usually tells you the thermistor is bad. Have you recently changed the firmware for a custom firmware? $\endgroup$
    – 0scar
    Oct 27 '20 at 8:38
  • $\begingroup$ it could also be a mis-calibrated thermosensor $\endgroup$
    – Trish
    Oct 27 '20 at 9:45
  • $\begingroup$ @0scar I already did two firmware updates, but I didn't install a custom firmware, it was always the original Flashforge firmware that got updated. $\endgroup$
    – thbonk
    Oct 27 '20 at 11:54
  • $\begingroup$ @Trish Do you know whether it's possible to calibrate the thermosensor? $\endgroup$
    – thbonk
    Oct 27 '20 at 11:55
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    $\begingroup$ It is good to know that you used original firmware upgrades, this rules out an incorrect thermistor translation table (voltage to temperature). With respect to the mis-calibration, using an estimated room temperature of about 20 °C (depends on your room temperature/location) you get a 31 °C offset, so a 120 °C bed temperature which is usually higher than the beds can go. If insulated well, the best you can get from beds is about 110 °C as far as I know. $\endgroup$
    – 0scar
    Oct 27 '20 at 12:12

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