Mickey D San Marcos , TX September 07, 2019 Appliance: Electrolux Heating/Cooling, Air Conditioner, Room FFRH0822R10 Electrolux Air Conditioner Ffrh0822r10: Motherboard. How to replace Electronic Pc Board. Removed the old, put in the new motherboard, 7 screws on my window air conditioner with heater 5k 9 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes