Client has stackable dyer. They had a complaint that the dyer was taking to long to dry clothes. I removed the vent hose and cleaned out. Very dirty. And removed the front support for filter and cleaned out also very plugged and filled with lint. Dryer appeared to be working ok however a few days later it takes three cycles for her to dry what ever she puts into the dryer.
Could it be a faulty safety thermostat or flame igniter starting to fail? Any other suggestions before I begin my quest to make this work.