The 6‑Zone Fire Alarm Panel (model 25380215‑4/72031600) is a conventional control unit designed for small commercial or industrial sites, featuring six fixed zones, up to 32 detectors, and a switch‑mode power supply. Common failures on this class of panels include power‑supply degradation (especially the isolated 24 VDC rail), zone wiring shorts or opens that trigger false alarms, sounder circuit faults, and internal relay wear causing intermittent annunciation. First‑check diagnostics: verify the main AC input and isolated DC output with a multimeter; inspect all zone and sounder connections for continuity and proper polarity; review any stored event logs or fault codes via the panel’s diagnostic interface.[oss-gpt-20b]