The Alemite 339296 controller is a high‑performance fluid control unit used in industrial lubrication systems, typically featuring an integrated microcontroller with I/O for pressure, flow, and temperature monitoring. Common failure points include power supply degradation (especially the 24 V DC rail), corrupted firmware or bad memory cells, and mechanical wear on the relay contacts that drive solenoid valves. First‑check steps: verify the input voltage and regulator output; inspect all connectors and relays for corrosion or burnt contacts; review any error codes displayed on the LCD or transmitted via Modbus/serial to identify a specific fault (e.g., “E12 – Valve driver failure” or “E07 – Over‑temperature”).[oss-gpt-20b]