Hey there! The issue you’re experiencing could be caused by several factors. First, ensure that all wiring connections are secure and properly terminated. Loose connections can disrupt communication between the panel and devices. Additionally, check the programming settings on the panel to ensure they are configured correctly for the devices in your system. If the problem persists, try isolating individual devices to determine if any specific device is causing the communication issue. Finally, consider checking the power supply to ensure it’s providing sufficient voltage to all devices. If you’re still having trouble after these steps, feel free to provide more details, and we can further assist you in troubleshooting the problem.