Dometic ASCDU15HV 1161 Installation And Operation Manual page 23

Universal Air Conditioning Unit
This function is used during cooling operation to allow
any ice that may have formed on the evaporator coil to
melt when the conditioned space temperature drops
below 70 °F (21 °C) (default). This routine works in
ten-minute cycles during which time the compressor
cycles off for 15 seconds for each degree the ambient-
temperature is below 70 °F (21 °C) (default) and runs
during the rest of the ten-minute cycle. For example,
if the conditioned space temperature is 67 °F (19 °C),
the compressor will shut off for 45 seconds (3 x 15
seconds), and then run for nine minutes and 15 seconds
(ten minutes minus 45 seconds), repeating in ten-
minute intervals. You may adjust the conditioned space
temperature at which the anti-icing routine is initiated.
The range of adjustment is 65 °F–80 °F (18 °C–26 °C).
22: Fan Speed Division
You can select either five or three fan-speed divisions
based on the fan response differential (see "4: Fan
Response Differential" on page 19). The default is set
at five fan-speed divisions.
For custom programming parameters, the fan speed
division must be set to five.
The default is set at five fan-speed divisions.
The Q3 control displays either the individual high,
medium, and low fan-speed LEDs if three speeds are
selected, or a combination of the high, medium, and low
fan-speed LEDs if five speeds are selected, for example:
• Low speed = low LED
• Medium low speed = medium and low LEDs
• Medium speed = medium LED
• Medium high speed = medium and high LEDs
• High speed = high LED
23: Aux Heat Enabled/Disabled
Programmable function 23 must be set to "h1" and
programmable function 19 must be set to "CL" for this
system to operate properly in aux heat/heat mode.
When you enable the aux heat/heat function ("h1"),
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the fan will delay turning off for 30 seconds to allow
the auxiliary heater to cool down. The delay occurs
when the auxiliary heater cycles off after the set
point is reached or when the mode is changed.
EN
Programmable Functions, Ranges, and Factory Defaults
24: Seawater Low Limit Temp
Do not adjust. The feature is not available.
25: Humidity Sensor Limit
Do not adjust. The feature is not available.
26: Air Filter Timing Setting and Reset
Use this feature for a reminder to clean or replace the
unit's air filter. Select the number of operating hours until
the filter reminder appears in the Q3 control flashing
"Ar" then "FL". The value entered represents that
number times 100 hours. Function values are between 1
(100 hours) and 25 (2500 hours). Dometic recommends
that you check the air filter at least every 500 hours of
operation or more often depending on use. The default
setting is off, designated with "00." To reset the timer
and stop the flashing filter reminder, press the Fan, Up,
and Down buttons simultaneously.
27: Select FAMU Operation
Do not adjust. The feature is not available.
28: CAN Bus Unit ID
Do not adjust. The feature is not available.
29: CAN Bus Group ID
Do not adjust. The feature is not available.
30: Custom Medium Fan Speed
You can set the number of fan speeds that can be
modified by selecting either two or five speeds (if
function 22, fan speed division, is set to five).
If function 22 is set to three, the selection options for
function 30 will be two or three. If three is selected, then
32, medium fan speed, will be enabled.
If function 22 is set to five and function 30 is set to five,
you can modify three more fan speeds (medium low,
medium, and medium high) as functions 31, 32, and 33,
if enabled.
31: Fan Speed Medium Low
You can adjust the medium low fan speed to suit
individual preferences. For instance, you may wish to
decrease the medium low fan speed setting to minimize
fan noise.
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