Control has the combined function of a demand defrost control, defrost relay, anti-short cycle timed-off control, pressure switch/system control lockout circuit (5-strike), manufacturing test mode, and field connection terminal strip. Inputs will include thermostat commands, coil and ambient sensors, and pressure/system controls. Control has selectable feature to turn off compressor for 30 seconds at beginning and ending of defrost cycle. Shipped with jumper installed on delay position.