Mine did this......easy fix. Turn it off at plug remove the rear plate that houses the heater element and carefully take it out then blow it with a hair dryerfor about 10 minutes. Water collects on the element when th econdenser is not cleaned regularly so do this as well. put it all back together and turn on again. Mine has now worked fine for 6 months just make sure you clean the condenser every week
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Try fixfault.com to fix tumble dryers.