Sounds like it's not heating, OR not sensing the load.
Try it on the ' warm air' setting which bypasses the sensing circuit. If it gets warm, then the heating is ok so is a problem with the sensing circuit.
If it doesn't get warm then it's a problem with the element(unlikely), thermostat on the element( some can be re-set), OR the heater relay circuit board.
Bernii, January 2011