Hello @rgrs !
Please do not delete the lines that ask for the klippy.log - please attach it to your next post.
When you post code snippets, please use the Preformatted Text
feature of the forum editor, else characters get lost.
Of course
# Start bed heating
M140 S{BED_TEMP}
M104 S{EXTRUDER_TEMP}
M190 S{BED_TEMP} # <- this waits until the temp is reached.
M109 S{EXTRUDER_TEMP}
You may have a look on this: