It’s possible that the issue lies with the wiring or the compatibility of the device with your fire alarm control panel. First, double-check the wiring connections to ensure they are secure and properly connected. If the wiring appears to be correct, verify if the fire alarm panel is compatible with the Wheelock E60-24MCC-FR. Sometimes, certain panels may require specific programming or configurations to properly activate speaker strobes. If everything seems correct and the issue persists, it might be a defective device, and you should consider contacting the manufacturer for further assistance or a replacement.