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English
L-2230 Operation
have the software identification number and the air
conditioning unit serial number available. The serial
number may be found on the dataplate label.
2.07 Programmable Parameters
There are 17 programmable parameters with their
Factory Default Settings listed in this section. The table
below indicates what these parameters are, along with
the permitted values and the original Factory Default
Settings.
P-1: High Fan Limit
The upper fan speed limit can be adjusted for various
motors. The high fan limit is adjusted with the system
installed and operating. The values range from 56
through 95 arbitrary units. Set a higher number for a
higher fan speed. Set lower number to lower the fan
speed. Use the Up and Down Buttons to select the
desired speed.
P-2: Low Fan Limit
The low fan limit determines the lowest output allowed
for the low fan speed. The values from 30 through 55,
arbitrary units. Use the Up and Down Buttons to select
the low fan limit. Set a higher number, for higher fan
speed. Setting lower numbers lowers the fan speed.
IMPORTANT ! Once the high and low fan speed limits
are set, the unit will automatically readjust the remaining
speeds to produce three equally spaced fan speeds in
both Automatic and Manual Fan Modes.
P-3: Compressor Staging Time Delay
The compressor staging delay is provided for installa-
tions where more than one system is being operated
from the same power source. Setting the staging delays
at different intervals allows only one compressor to start
at a time. The units should be staged at least five
seconds apart. The minimum delay is five seconds and
the maximum is 135 seconds.
P-4: Temperature Calibration
Use this feature to calibrate the air sensor within a range
of ±10°F. Enter the Program Mode and the ambient
temperature appears in the display. Use the Up and
Down Buttons to select the desired offset. The tempera-
ture in the display will increase or decrease according to
the offset programmed. Note that setting increments are
in °F even when the control is set to display °C.
P-5: Failsafe Level
See Failsafe and Fault Handling Codes section.
P-6: Low Voltage Monitor
The Elite has a built-in voltmeter circuit that monitors the
AC input voltage. Depending on whether the input power
supply is 115VAC or 230VAC, this parameter can be set
to “OFF”, to “95” (for 115VAC input power) or to “195” (for
230VAC input power). The factory default setting is OFF.
When this parameter is set to 95/195, the Elite will check
the AC input voltage prior to beginning every cooling or
heating cycle and will prevent the compressor from
starting if the voltage is less than 95VAC/195VAC. This
provides extra protection for the compressor and compo-
nents within the system during low voltage (brownout)
conditions. If this low voltage condition occurs, the fault
code “LAC” will show on the LED display. The fault will
continue until the AC input voltage rises above 95VAC/
195VAC, at which time the LAC fault code will clear
automatically and the cooling or heating cycle will
commence.
After the compressor is started, the low voltage monitor
will not interfere with operation and the LAC fault will not
be displayed even if the voltage does drop below 95VAC/
195VAC. Similarly, whenever the Elite is not running a
cooling or heating cycle and the voltage drops below
95VAC/195VAC, the LAC fault will not be displayed.
P-7: De-Icing Cycle
Elite is equipped with a de-icing cycle to prevent ice build up
on the evaporator coil during extended periods of cooling
operation. Installation variables such as grille sizes, length of
ducting, insulation R factors and ambient temperatures
determine the cooling run time required to achieve set point.
Customer usage may substantially increase run times by
operating the system with the hatches and doors open.
Programming an unrealistic set point (e.g. 65°F/18.3°C) and
leaving the salon door open will usually cause the evaporator
to ice up on warm humid days.
For Elite software revision A13 and older, de-icing is
accomplished by switching the reversing valve into the
Heat Mode while the system is cooling. The valve will
remain energized for the programmed cycle time. The
cycle is programmable to “OFF” or to a period of one,
two, or three minutes.
For Elite software revision A15 and newer, de-icing is
accomplished using a more sophisticated algorithm that
closely monitors the room air temperature in repeating
10-minute intervals during a cooling cycle. Depending on
the value and change in room temperature during these
monitoring intervals, the Elite will perform various actions
to prevent ice from forming and/or melt ice that may have
already formed. This is accomplished by short compres-
sor shutdown periods combined with a one-speed
increase in fan speed, and by periodic Heat Mode cycles
with the fan turned off.
