Danfoss OPTYMA Control AK-RC 101 Operation And Maintenance Manual

Contents

OPTYMATM Control single-phase AK-RC 101 RS8FD402 © Danfoss A/S 2014/11 13Hot-gas defrostingSet parameter d1 =1 to defrost in cycle inversionmode.The compressor relay and defrost relay are activatedthroughout the defrost phase.To ensure proper control of the system the installermust use the defrost output: this must allowopening of the cycle inversion solenoid valve andclosure of the liquid solenoid valve.For capillary systems (without thermostat valve) thecycle inversion solenoid valve can be controlled viathe defrost relay control.Pump-down functionPump-down function is activated when parameterAU=4 (for version with AUX/Alarm relay only).Connect pump-down pressostat on the digital inputINP-1.The compressor is directly controlled by pressostat.Connect evaporator solenoid valve on the AUXrelay. The solenoid is controlled directly by thethermostat.Password functionThe protection function is activated whenparameter PA is set to a value other than 0.See parameter P1 for the different protection types.When PA is set, protection starts after twominutes of inactivity. 000 appears on the display.Use the up/down keys to change the number, andthe set key to confirm it. If you have forgotten yourpassword, use the universal number 100.