BM2797 Extruder temp is too high,

Flagship K Series Creality Flagship K2 Pro & K2
1

Hello,

K2 Plus I get this error - BM2797 Extruder temp is too high, possibly due to high chamber temp or delayed cooling of the extruder motherboard.
The printer stops, but resumes after a minute or two, then after some time repeats the error and stops. The stop start spoils the print quality and it is annoying. When the print stops the nozzle temperature is adjusted to 270oC, but restores to 245oC when the print resume..

The error seems to occur more frequently over the last two days.

All the fans work, temperature measurement and controls seems to work fine.
I print PETG, nozzle at 245oC, bed at 80oC, and chamber temperature around 30oC

Any idea what can cause this problem ?

2

if is a hight temp day you can open the door during printing.

3

Possibly the temperature thermistor.
I replaced the hot end and had to adjust the temperature from 245 to 280oC to get proper results.

If the temperature is too low the part is weak and layers delaminate.
PETG print really strong parts !

1 Like
4

I do that, best results if the case is between 30 and 35oC.

1 Like
5

こんにちは。
Crealityのパラメーターでは
HyperPETG ノズル：240℃ ベッド温度：70℃ チャンバー温度：35℃
CR-TEPG ノズル：250℃ ベッド温度：70℃ チャンバー温度：35℃
GenericPTEGノズル：250℃ ベッド温度：70℃ チャンバー温度：35℃
となっていますが、
ノズル245℃ ベッド温度：80℃ チャンバー温度：30℃の方が上手くプリント出来ると言う事でしょうか？
PETGはプリントした事が無いので参考になりました。
ありがとう。