Slimline LS
www.whisperkool.com | Page 15
“Def” will be displayed during the Anti-Frost Cycle. If the
cycle is less than five minutes, the controller will prevent the
compressor from starting until five additional minutes have
elapsed. This is to prevent short cycling of the compressor.
Holding down the UP ARROW button for approximately five
seconds manually starts the Anti-Frost Cycle, but only if the
evaporator is below 40°F (defrost end temperature). If the
evaporator is above 40°F, the display will blink three times and
continue 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 (40 minutes on and 10 minutes off), which will ensure
that the product is kept within a safe temperature range. P1
will be displayed on the screen until the probe issue is
rectified.
Alarms
See “Alarm Codes” in the Controller Functions chart.
PLEASE NOTE: Never insert fingers or any foreign objects
into the blower openings.
SYSTEM OPERATION
Initial Startup
When power is applied to the unit, the control will briefly
display all symbols, and the snowflake symbol will be
displayed (if unit is calling for cooling). There may be a brief
delay (up to 60 sec.) before the evaporator fan turns on. When
the evaporator fan is activated, the fan symbol will display.
Upon startup, any dust or debris on the heating element may
burn off and release an odor. The scent should dissipate in a
few hours once the dust is eliminated.
Setpoint
The setpoint is preset at the factory (WhisperKOOL) to 55°F. It
can be adjusted by the customer between 50°F and 70°F (in
1°
F increments).
Cooling Operation
Cooling is activated once the bottle probe senses a
temperature that is 1°F greater than the setpoint. The
controller then energizes the compressor relay which
activates the compressor. The evaporator and condenser fans
operate with the compressor. The unit provides cooling until
the bottle probe senses that the setpoint has been reached.
At this point the compressor relay is de-energized, which
stops the compressor. The evaporator and condenser fans will
continue to run for one minute to reintroduce any moisture
from the evaporator coil and reduce the head pressure.
Humidity Features
The Fdc parameter can be increased to allow the evaporator
and condenser fans to run for a longer period of time after
the
compressor turns off, allowing more moisture to be
reintroduced into the wine cellar.
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 26°F
for
five minutes, the unit will enter 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.
If the evaporator is not above 26°F after the Anti-Frost Cycle
has ended, the red error light will display in the upper right
corner. The alarm “Ad3” will be recorded in the alarm folder,
indicating that the Anti-Frost Cycle timed out. The unit will
run for five minutes and then enter another Anti-Frost Cycle.
This sequence will continue until the evaporator temperature
rises above 26°F.
