Timothy R Vancouver , WA July 26, 2014 Appliance: Frigidaire Wall Oven FEB24S5ASB Frigidaire Oven Feb24s5asb: F 1 error code meant controller fault. How to replace Clock Timer. Ordered Clock/Timer circuit board. Took less than 45 min to complete Remove and Replace. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes