This is a compact compressor control system with all possible features required to run a single compressor and it has many advance functions. The panel covers 8 faults and varieties of capacity controls. Design based on micro controller having watchdog timer, flash memory RAM & EPROM. Compact and elegant look. Manual and auto 2 / 3 step capacity control. 8-point annunciator with standard auto reset sequence. Auto annunciation accept feature. Fault sensing delay for each fault, to avoid nuisance tripping. Lubricating oil fault initial bypass facility. Auto unloading before compressor starting and stopping. Anti hunting system for capacity control. Auto stop on unloaded run. Hooter demarcation for alarm & trip faults. Dual capacity control (ASSC / CSC). Restricted successive starts. Auto AOP Control.