After making sure that your dryer is plugged properly, check your fuse box, to see if a breaker has tripped. A common cause of a non-working dryer is a faulty temperature switch. If you have the tool and experience, use a multimeter to check the temperature switch’s terminals. If the reading on your multimeter is infinity or zero, the temperature switch is still working properly. You also need to do the same thing with the thermostat, start the switch or terminal block. If you are not comfortable, you may ask an electrician to check and replace any faulty components.