We think that only the counterpart of the reed sensor maybe got loose during the transportation and needs to be positioned new:

The two reed sensors are based on the back of press head!

If those have contact to their counterparts which are based on the base of the TPD7 Premium, the arrows are shown in the  display and the cylinder is allowed to work and move down when the temperature is reached!

You can easily change the position of the counterparts by loosen the screws, move the counterpart within in the whole and fix it again when the correct position is adjusted!