Washing machine overheating caused by a fault of the thermostat.
A thermostat in your washing machine is regulating the temperature of the appliance. If your washing machine is overheating, this could indicate a fault with this thermostat.
The problem requires a repair by a trained and qualified service engineer.
If you have followed the information above but you're still having problems with your Siemens washing machine, then you might want to have it checked out by a Siemens professional.