Honeywell MS-9600LS Fire Alarm Control Board

The Honeywell MS‑9600LS is a compact, intelligent addressable Fire Alarm Control Panel (FACP) designed for 636‑point systems with dual signaling line circuits and optional second SLC. Common failure points in this class include power‑supply voltage drops or brownouts, degraded signal integrity on the SLC buses, and firmware corruption that can trigger “panel not initialized” or “communication error” messages. First‑check diagnostics should verify 24 V DC input stability, inspect all SLC connectors for corrosion or loose contacts, and review the panel’s self‑test logs for any fault codes related to power or communication modules.[oss-gpt-20b]

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