#3564 Is it mandatory to change the thermal barrier when changing the nozzle

This is not mandatory, but strongly recommended to avoid redundant errors.
If you have poor print quality or blocking/blocking, the problem may be in the nozzle. However, the problem can also come from the thermal barrier, hence the importance of changing both.
By changing only the nozzle, you risk encountering the same anomalies and losing time in the diagnosis.