staefa 091-60200-81 board

The Staefa 091‑60200‑81 is a control board used in industrial building automation and HVAC systems, typically acting as the central processor for sensor input and actuator output. Common failure points on this class of boards include damaged power regulator components, burnt I/O traces from overcurrent conditions, and degraded signal integrity due to moisture ingress or thermal cycling. Initial diagnostics should verify the 24 V DC supply rail continuity, inspect the board for visible burn marks or cracked capacitors, and check all digital/analog input lines against known reference voltages; if available, review any logged error codes from the host PLC for clues to malfunctioning modules.[oss-gpt-20b]

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