My appliance does not get warm during operation. It normally heats up, but not hot.

I have used the appliance a total of four times: twice for carpets, once for a mat and once for cleaning a car. I didn't have any problems. Compared to other appliances on the market, this model has a much stronger suction power. If the surface you are cleaning is particularly hard or resistant, this could be the cause of the heating. It would be advisable to contact the seller. Have a nice day.