21
EN
Universal Air Conditioning Unit
Programmable Functions, Ranges, and Factory Defaults
9: Temperature Calibration
This feature calibrates the ambient sensor within a range
of ±1%. The temperature sensor should be within one or
two degrees of the actual room temperature.
I
Setting increments are in °F even when the Q3
control is set to display °C. Adjust this parameter to
display the correct room-temperature reading.
To check accuracy or to calibrate:
• The sensed temperature is displayed. Place an
accurate thermometer beside the sensor and
compare the temperatures.
• Press the Up or Down buttons to recalibrate the value
as required.
10: Dehumidification Pre-Circulation Time
The humidity control program (HU) automatically
operates the air conditioning system for a programmed
time period to help control humidity. This
dehumidification feature works in three stages:
1. The fan comes on at high speed to circulate air for ten
minutes.
2. The fan then drops to low speed, and the compressor
cycles on in the cool mode to dehumidify.
3. After the dehumidification cycle, the system turns off.
The process repeats according to the programmed
time period.
The compressor time delay setting (see “1: Compressor
Time Delay” on page 19) governs when the
dehumidification cycle starts. Every one second of
compressor delay equals a six-minute advance into the
dehumidification cycle.
The factory default settings are:
• Pre-circulation cycle—10 minutes
• Dehumidification cycle—30 minutes
• Overall time period—12 hours
The factory settings are adequate for most moderate
climates and boats. For very humid climates, shorten
the overall time period and extend the dehumidification
time. In dry climates, select a longer overall time period
between cycles and a shorter dehumidification time.
Programmable function 10 governs the pre-circulation
cycle time and should not be changed.
11: Dehumidification Time
The dehumidification time determines how long the
compressor runs in the dehumidification mode (see “10:
Dehumidification Pre-Circulation Time” on page 21).
The display shows the dehumidification time period in
minutes. You can select 0, 10, 20, 30, 40, or 50 minutes.
Select a longer dehumidification time in climates with
high humidity. Select a lower dehumidification time in
climates with low humidity.
12: Dehumidification Overall Time Period
This setting determines how often the system performs
the dehumidification process. The display shows the
overall time period in hours. You can select intervals of 2,
4, 6, 8, 10, 12, 14, or 16 hours. Choose a shorter overall
time period in climates with high humidity. Choose a
longer overall time period in climates with low humidity.
Recommended Humidity Control Settings
Outside
Temp .
Relative
Humidity
Time
Period
Dehumidification
Time
Below 80 °F
(27 °C)
75–85%
12 hours
10 minutes
Above
85%
8 hours
20 minutes
80 °F–90 °F
(27 °C–32 °C)
75–85%
10 hours
30 minutes
Above
85%
6 hours
40 minutes
Below 90 °F
(32 °C)
75–85%
8 hours
50 minutes
Above
85%
6 hours
60 minutes
13: Software Revision Level
This setting displays the software version and revision
level of the system. It will display a two-digit number
such as “05” for version five. Have this information
ready prior to calling a dealer or the factory for service
assistance.
14: Determining Your Product Type
The system default is dE for “direct expansion self-
contained.”
