method of a drum dryer is provided to replace a filter at the proper time by discriminating the amount of foreign materials inserted in the filter with each temperature variation of a drum outlet and a heater inlet changed according to the amount of the foreign materials absorbed on the filter...
Several weeks ago a trouble light came on that indicated the air flow in my dryer was becoming obstructed. I had the dryer vent and area under the lint filter cleaned. (Not much lint was pulled out, so maybe the dryer sensor gave a false alarm.) I felt a small investment in a brush...