First, ensure that the module is correctly installed and securely connected to the fire alarm control panel. Check for any loose wiring or damaged connections. Next, verify that the module’s address is correctly programmed in the system and that it is within the correct loop range. If the module is receiving power but still not functioning, try resetting it by power cycling the control panel. If the issue persists, it could indicate a faulty module, and it may need to be replaced or serviced by a qualified technician.