David S Lawton , OK September 02, 2016 Appliance: Frigidaire Room Air Conditioner FRA18EMU213 Frigidaire Air Conditioner Fra18emu213: Fan was constantly running had to unplug unit to stop it. How to replace Electronic Pc Board. Fan relay was burnt out. Removed and installed new pc board. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes