If the remote doesn't work with your device, try these troubleshooting steps: Double-check the code: Make sure you entered the correct three-digit code for your device. Refer to the code list and try other codes if necessary. Ensure proper setup: Ensure that the device you want to control is powered on and within the remote's line of sight. Replace batteries: If the remote's batteries are weak, it may not function correctly. Replace them with fresh batteries. Reset the remote: To reset the remote to its default settings, remove the batteries for a few minutes, and then reinsert them. Try auto-search: If the manual codes don't work, use the auto-search function. Follow the remote's instructions for auto-search mode.