Michael R Sulphur , OK May 01, 2020 Appliance: Frigidaire Room Air Conditioner LRA087AT71 Frigidaire Air Conditioner Lra087at71: The temperature setting would climb to 90 on its own and then wouldn't respond. How to replace Electronic Control (Oven Control Board). I replaced PC board. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes