hi if the dryer is not heating at all ,its one of 2 things most proberbly the thermostats one has gone open circuit or the heater element has blown, just go to u tube enter tumble dryer trouble shooting ,then watch the video on the subject .hope this helps (p.s. if you really are not confident woking with electrics you do need to know what your doing, but if you are practically minded you should be ok )
john
December 2012