Terry R Greenwood , IN February 19, 2017 The cycles were interrupted and restarted randomly Purchased new timer after reviewing similar problems on your website. Replaced timer. Works perfectly. NOTE: Knob is retained by a clip. Remove plastic cover on the knob to access clip - don't just yank on the knob! 5 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes