William L Cary , IL September 13, 2014 Appliance: Model 110 70072991 Dryer displayed the "pf" indication First time ever that pushing the "Stop" button did not turn out light. Contact with tech line, diagnosis thought to be a CONTROL BOARD. Part ordered, installed, but only worked one time and then nothing at all, not even a "PF" light. It seemed like a control problem so I ordered the CONTROL PANEL and installed it. Dryer worked fine with both Control Boards. Appliance Parts Pros allowed me to return the first CONTROL BOARD for a full part refund. The ability to return a part without question is an extremely nice feature. I knew it was either part but did not know which one. The ability to have either part to "test" the circuit without having to purchase both is the difference between repairing or replacing the dryer. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes