It’s a potentially dangerous situation to let your dryer overheats. Before checking the condition of your dryer, be sure to let it completely cool. A common cause for this problem is a clogged vent and you need to check whether there’s lint build-up. A combination of high temperature, dry air, and flammable lint can be a potential fire hazard. Faulty heating coils and thermostats may also cause your dryer to overheat.