It sounds like your Siemens DCT-1 panel might be experiencing a power issue or a malfunction with its internal components. Firstly, check the power supply to ensure it’s properly connected and providing adequate voltage. If the power supply is fine, try resetting the panel by powering it off and then back on. If the issue persists, it may require further inspection by a certified technician to diagnose and resolve any internal faults. Additionally, ensure all connections to peripherals such as sensors and annunciators are secure and functioning correctly.