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Initial Start-Up
:
When power is applied to the unit, the control will briefly
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 (Cellarcool) at 55°. It can
be adjusted by the customer between 50° and 70° in one
degree increments.
Cooling Operation:
Cooling is activated once the Air Sensing probe senses
a temperature that is 1° greater than the set point. 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 Air Sensing probe senses the set point. At this
point the compressor 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 evaporator
and condenser fans to run for a longer period of time after
the compressor turns off, 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
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°, 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
another 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 five seconds
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 Air Sensing 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 (Air
Sensing probe) and PB2 (evaporator probe).
Safety Features:
Once the compressor relay is de-energized the controller
must wait 5 minutes before re-energizing 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 Air Sensing probe, the compressor
will cycle off for 10 minutes and on for 40 minutes. E1 will
be displayed on the screen.
Alarms:
If the Air Sensing 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 Air Sensing temperature. The same thing will happen
if the Air Sensing temperature reaches 4 degrees below the
set point, except the alarm will read “AL1”. These alarms will
not display for the first 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 flash 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.
Press the set button and enter the Al folder to view any
current alarms that are not flashing on the display.
In the event of a high water alarm the compressor will turn
off, the alarm will sound and “Opd” will be displayed in the
alarm folder. The unit will continue normal operation once
the pump has removed enough water to clear the high
water alarm.
UNIT OPERATION
