Peter W Sloan , NY October 10, 2022 Appliance: Frigidaire Room Air Conditioner FFRE1533S11 Frigidaire Room Air Conditioner Ffre1533s11: Wouldn't shut off at times. How to replace Electronic Control Board (Electronic Control). Changed the relay circuit board #AP6278438. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes