SYSTEM OPERATION
Initial Start-Up
When power is applied to the unit, the control will briefly display all symbols, and the Snow Flake symbol will be displayed (if unit is calling for cool- ing). There may be a brief delay prior to the evapora- tor fan turning on, as the fan will not turn on until the evaporator probe temperature drops to the perspective start temperature (below 70°F). When the evaporator fan is activated the Fan symbol will be displayed. The temperature control feature for the evaporator fan is a feature applicable to Whis- perKOOL. This is the Advance Product Safety Tech- nology (APST), which ensures that in the possible event of a cooling deficiency, the heat from the indoor fan will not raise the temperature of the wine cellar, which could otherwise have an adverse effect on the wine aging process.
Normal System Cycle
After the bottle probe has reached the set point (all units are shipped with the set point of 55°F and a dif- ferential of 1°F), the compressor and the condenser fan will turn off, but the indoor fan will continue to run for about 5 minutes, which is a feature of the WhisperKOOL Humidity Management (WHM) sys- tem. The WHM is an adjustable feature which allows the customer the convenience of managing the hu- midity enhancement of their wine cellar. The WHM is one of the many Customer Preference Selection features which allow the customer the ability to fine tune the controls.
Anti Short Cycle
The Anti Short Cycle ensures that the unit will re- main off for a period of 5 minutes after the unit has reached the set point to allow the pressure in the refrigeration system to equalize prior to starting the compressor.
Anti Frost Cycle
The Anti Frost Cycle is a precautionary measure, as icing or frosting of the coil does not occur during normal operation. The system will go through a defrost cycle every 4 hours. During the defrost cycle, the indoor fan will provide air flow across the indoor coil, which will evaporate any frost accumulation.
Low Ambient Conditions
If the condensing unit is installed outside (which will allow the condenser to be exposed to low ambient temperatures), the condenser fan may cycle on and off. The purpose of the fan cycling is to maintain the system high side pressure, which will ensure an adequate refrigeration process. The fan cycling process is accomplished by way of a Johnson Control attached to the condensing unit.
Bottle Probe Failure Protection
In the event that a bottle probe should fail, the APST (Advance Product Safety Technology) will automati- cally transition the Refrigeration Compressor cycles to a
Remote Control Panel (standard on ducted units) The remote keypad is designed to give the user the ability to monitor and change cellar conditions when the evaporating unit is placed in a remote location outside of the cellar.
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