Broken heater element. Not that big of a deal to replace in most units. You need to run a continuity test on the element to see if it is broken. No continuty means that it is broken somewhere along the line. It kind of works like a light bulb filament and has to have a continuos loop to get hot. That only applies if it is an electric dryer. If it has continuity then likley you have a timer issue....
Linear Mode
