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XLTP 041612
Initial Start-Up:
When power is applied to the unit, the control will briey
display all symbols, and the Compressor symbol will be
displayed (if unit is calling for cooling). There may be a brief
delay prior to the evaporator and condenser fans turning on.
Set Point:
The set point is set from the factory (WhisperKool) at 55°. It
can be adjusted by the customer between 50° and 70° in
one degree increments.
Cooling Operation:
Cooling is activated once the bottle probe senses a tem-
perature that is 0.5° greater than the set point. The control-
ler 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 the set point. At this point the compres-
sor relay is de-energized which stops the compressor. The
evaporator and condenser fans will continue to run for 1
minute to re-evaporate any moisture from the evaporator
coil and reduce the head pressure.
Humidity Features:
The FDC parameter can be increased to allow the evapora-
tor and condenser fans to run for a longer period of time
after the compressor turns o, allowing more moisture to be
re-evaporated into the cellar.
Defrost/Anti-frost:
When the evaporator probe senses a temperature of 26
degrees for 5 minutes, the unit will go into Anti-frost mode.
This will shut down the compressor and allow the evapora-
tor and condenser fans to run to evaporate any frost accu-
mulation on the coil. The compressor will remain o until
the evaporator coil reaches 40°, or for a maximum of 10
minutes. The unit will then return to normal operation.
If the evaporator is not above 26 degrees after the anti-frost
sequence has ended, the red error light will display in the
upper right corner. Alarm “Ad3” will be recorded in the alarm
folder, meaning that the anti-frost sequence ended based
on time. The unit will run for 5 minutes and then enter an-
other Anti-Frost cycle. This sequence will continue until the
evaporator temperature increases above 26°.
“Def” will be displayed during anti-frost. If the anti-frost
sequence is less than 5 minutes, the control will not allow
the compressor to start until 5 minutes has elapsed. This is
to prevent short cycling of the compressor.
Holding down the up button for approximately ve sec-
onds manually starts the Anti-frost sequence, but only if the
evaporator is below 40 degrees (defrost end temperature).
If the evaporator is above 40 degrees, the display will blink
three times and continue normal operation.
Display:
The Set point is displayed by default. “Def” is displayed
during anti-frost. The bottle probe, evaporator probe, and
condenser probe temperatures can all be access by pushing
the set button and scrolling through PB1 (bottle probe), PB2
(evaporator probe), and PB3 (condenser probe).
Safety Features:
Once the compressor relay is de-energized the controller
must wait 5 minutes before re-energizing the relay. This pre-
vents the compressor from repeatedly turning o and on. If
the unit is calling for cooling during this time, the compres-
sor 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 o for 10 minutes and on for 40 minutes. E1 will will
be displayed on the screen.
If the condenser temperature reaches 145°, the compressor
will shut down. The red alarm light will be displayed in the
upper corner of the display. COH will be displayed on the
screen. The evaporator and condenser fans will continue
to run until the time set by the FDC parameter has elapsed.
The unit will continue normal operation once the condenser
has reached 135°.
Alarms:
If the bottle temperature reaches 4 degrees above the set
point, a red light will blink in the upper right corner of the
display. The set button can then be pressed to reach the
alarm menu. The menu will display “AH1” indicating a high
bottle temperature. The same thing will happen if the bottle
temperature reaches 4 degrees below the set point, except
the alarm will read “AL1”. These alarms will not display for the
rst 10 hours after the unit is turned on to allow the cellar
to reach temperature. They will also wait one hour after an
anti-frost cycle before displaying.
In the event of a faulty evaporator probe E2 will ash on the
screen intermittently. The red alarm light will be displayed
in the upper right corner. The unit will go through one anti-
frost sequence every 24 hours.
In the event of a faulty condenser probe E3 will ash on the
screen intermittently with the set point temperature along
with the red error light at the top of the display. There will
be no high condensing temperature alarm.
Press the set button and enter the Al folder to view any cur-
rent alarms that are not ashing on the display.
UNIT OPERATION
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