Thank you for your question and I understand your concern.
I must assume the dryer will not start and I must assume the dryer has the proper voltage supply (220 volts). I must also assume you by passed the door switch correctly by jumping the white wire to the blue wire.
The dryer not likely starting because of a faulty thermal fuse (key#23) which is located on the blower housing (key#11). The thermal fuse will fail if the dryer overheats due to a clogged venting system or lint filter. This can also be caused by a shorted heating element. The most common cause for overheating is a vent tube clogged with lint, a birds nest or other debris.
The thermal fuse can be disconnected and tested with an ohm meter for continuity. I added a YouTube video showing how to
the thermal fuse.
The thermal fuse is accessible by
disconnecting the power cord from the power source
and removing the rear panel. See image below. The thermal fuse is part #3392519 and is available at