Experiencing erratic performance or unexpected shutdowns from your HVAC system? The fixed board subassembly (12220300000537) might be the culprit. This genuine Midea component is designed for a precise fit and optimal function in your heat pump, air conditioner, or PTAC system. If you notice inconsistent operation or failure to start, it could be due to a faulty board. Before purchasing, confirm your device's model number to ensure compatibility.