If you have Simplify3d, you can enable the quick heat before setpoint option. This is part of the accelerated start-up.
The goal is to save time at the start of the printing process because the first print layer does not require a high bed temperature.
Shrinkage of the material on the following layers may occur if the bed temperature is insufficient. This can cause distortion on the other layers of the print. It is therefore imperative to ensure that the bed is heated during printing.
Case where the rapid bed heating at the start before the setpoint is not active
You can reset this option manually in the startup scripts if you wish with the instruction M140 just before the head preheat which is M104.
