y = yes the temperature displayed at the start of a defrost is locked in and does not change during this cycle. n = no during defrost the actual box temperature is displayed. Select whether or not to lock in the actual box temperature display during a defrost. Selects whether the system should go through a defrost cycle at start-up (or after a power failure). Upon defrost completion, evaporator fan and compressor remain OFF for this amount of time to allow coil drainage expressed in minutes. Selection of post-defrost fan delay, expressed in minutes. Setting of temperature (measured by the evaporator defrost probe) above which the fan is always OFF. Adjustable defrost termination temperature. Defrost cycle is terminated, regardless whether fully completed. Time delay of defrost start, expressed in minutes. Fr = Free (the compressor relay has no relation with the defrost functions and continues to regulate on Setpoint). SC = Stop Compressor a defrost cycle is activated each time the compressor stops. Time between defrost starts is always the same. rt = real time defrost initiation frequency is based on real time. dF = digifrost ®Feature defrost starting time ('dit') is calculated based on accumulative compressor running time. EL = ELectric defrost in = hot gas (reverse cycle) defrost. Similar to 'LSE', however setting an upper limit for the setpoint. This is the lower limit below which the user cannot change the setpoint. Switching differential (histeresis) it will always be set with positive value (make on rise). It is on during automatic defrost it blinks during manual defrost.ĭescription of Parameters diF: diFferential. Led 'SET': it is on during Setpoint display and programming. Led 'COMP': status light of the internalcompressor relay. The 'DEF' goes on when the defrost is initiated, whether the defrost is manual or automatic. Eliwell Ewpc 901 Manual The programmed interval to the next defrost cycle is automatically reset. Not accessible when in setpoint or parameter programming. Eliwell Ewpc 901 T Manual Transmission DEFROST: this momentary push button will start a manual defrost cycle whenever it is activated for at least 5 seconds. DOWN: same functions except to decrease a value. When held down for a few seconds, the change rate accelerates. UP: used to increase the setpoint value, as well as the parameter when in programming.

The system will automatically switch to normal display after 5 seconds upon release of buttons and the new value will be memorized. During this period the 'SET' status light is on and the setpoint can be changed with the 'UP' or 'DOWN' button only. Front Keypad SET: push and release to display the setpoint for 5 seconds.

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