Thermal runaway error after front print fan kicks in.
After a succesful upgrade to MK2.5 all calibrations and tests succeeded without errors, selftest is fine.
After starting a print everything looks ok, but after the first layer when the front print fan starts the extruder temperature drops rapidly and leads to a Thermal runaway error shortly after.
Looks to me the airflow from the front print fan is to much directed to the hotend rather the printed part or firmware is not keeping up sensing the extruder thermistor and react accordingly.
Anyone had this issue already and found a solution?
Is this a good question?