Slimline
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Initial Startup
When power is applied to the unit, the snowflake symbol will
be displayed (if unit is calling for cooling). There may be a
delay of up to 60 seconds before to the evaporator fan turns
on. When the evaporator fan is activated, the fan symbol will
be displayed.
APST (Advance Product Safety Technology) is a temperature
control feature for the evaporator fan that comes standard
with all WhisperKOOL units. APST ensures that, in the 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.
Setpoint
The setpoint is preset at the factory at 55°F. It can be adjusted
by the customer between 45–67°F in one-degree increments.
Anti-Short Cycle
The Anti-Short Cycle ensures that the compressor will remain
off for a period of three minutes after the unit has reached
the setpoint to allow the pressure in the refrigeration unit to
equalize prior to starting the compressor.
Anti-Frost Cycle (defrost)
When the evaporator probe senses a temperature of 25°F for
five minutes, the unit will start an Anti-Frost Cycle. This will
shut down the compressor and allow the evaporator and
condenser fans to run to evaporate any frost accumulation on
the coil. The compressor will remain off until the evaporator
coil reaches 40°F, or for a maximum of ten minutes. The unit
will then return to normal operation.
Bottle Probe Failure Protection
In the event that a bottle probe should fail, the APST (Advance
Product Safety Technology) will automatically transition the
refrigeration compressor cycles to a pre-determined time
series (based on detailed laboratory testing), which will ensure
that the product is kept within a safe temperature range.
Display
The bottle probe temperature is displayed by default. “Def” is
displayed during an Anti-Frost Cycle. The air-sensing probe
and evaporator probe temperatures can be accessed by
pushing the SET button and scrolling through “PB1” (bottle
probe), and “PB2” (evaporator probe).
Safety Features
Once the compressor relay is de-energized the controller must
wait five minutes before reenergizing the relay. This prevents
the compressor from repeatedly turning off and on. If the unit
is calling for cooling during this time, the compressor symbol
will blink, indicating that cooling is needed but the control is
waiting for the Anti-Short Cycle delay.
In the event of a faulty bottle probe, the compressor will cycle
off for 10 minutes and on for 40 minutes. “P1” will be displayed
on the screen.
Alarms
See “Alarm Codes” in the Controller Functions chart.
SYSTEM OPERATION
