Vinotheque QT - System Operation (Advanced QT)

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SYSTEM OPERATION
Initial Start-Up
When power is applied to the unit, the control will briey
display all symbols, and the Snowake symbol will be displayed
(if unit is calling for cooling). There may be a brief (up to 60
sec.) delay prior to the evaporator fan turning on. When the
evaporator fan is activated the Fan symbol will display.
APST (Advance Product Safety Technology) is a temperature
control feature for the evaporator fan that comes standard with
all Vinothèque units. APST ensures that in the possible event of
a cooling deciency, the heat from the indoor fan will not raise
the temperature of the wine cellar, which could otherwise have
an adverse eect on the wine-aging process.
Set Point
The set point is set from the factory (Vinothèque) at 55F°. It can
be adjusted by the customer between 50–70F° in one degree
increments.
Cooling Operation
Cooling is activated once the bottle probe senses a
temperature that is .5° greater than the set point. The controller
then energizes the compressor relay, which activates the
compressor, evaporator fan(s) (and condenser fans if front
venting). The unit provides cooling until the bottle probe
senses the set point has been reached. At this point, the
compressor relay is de-energized, which stops the compressor,
evaporator fan(s) (and condenser fans if front venting).
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 o, allowing more moisture to be re-
introduced into the wine cabinet.
Anti-Short Cycle
The Anti-Short Cycle ensures that the compressor will remain
o for a period of three minutes after the unit has reached
the set point to allow the pressure in the refrigeration unit to
equalize prior to starting the compressor.
Anti-Frost Cycle (defrost)
After two hours of compressor operation the controller will
activate the Anti-Frost cycle. The compressor relay will de-
energize, stopping the compressor, evaporator fan(s) (and
condenser fans if front venting). The compressor relay will
remain de-energized for ve minutes, and then the unit will
return to normal operation. The set point and the Dripping
Snowake symbol will be displayed during the Anti-Frost cycle.
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 the safe range.
Display
The bottle probe temperature is displayed by default. “Def”
is displayed during Anti-Frost. 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 ve minutes before re-energizing the relay. This prevents
the compressor from repeatedly turning o 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 air sensing probe, the compressor will
cycle o for 10 minutes and on for 40 minutes. “E1” will be
displayed on the screen.
Alarms
See “Alarm Codes” in Controller Function chart.