Choosing The Control Operation - Dometic CapTouch Installation And Operating Manual

CapTouch Cabin Control
Factors that substantially increase the runtime include
operating the system with hatches and doors open and
programming an unrealistic set point (e.g. 65 °F/18 °C).
Such situations can cause the evaporator to form ice on
warm humid days.
De-icing is accomplished by closely monitoring the room
air temperature in 10-minute intervals during a cooling
cycle. Depending on the parameter value and the change
in room temperature during these monitoring intervals,
the control performs various actions to prevent ice from
forming or to melt ice that has already formed. This is
accomplished by short compressor shutdown periods
combined with a one-speed increase in the fan speed,
and by periodic HEAT mode cycles with the fan turned off.
The de-icing cycle algorithm initiates periodic
compressor shutdowns every 10 minutes if the inside
temperature is at or below 69 °F (20 °C). The lower the
temperature, the longer the compressor shutdown will
last. In addition, the de-icing cycle algorithm will perform
brief reverse cycle runs (with the fan purposely turned
off) if the cooling cycle runs for 40 minutes without any
cooling progress or if the cooling cycle runs for more
than 60 minutes, regardless of cooling progress.
The parameter setting for the de-icing feature
depends on whether you are using the
optional inside air temperature sensor or the
display built-in temperature sensor. Installation of an
optional inside air temperature sensor (located in the
return air path) greatly increases the effectiveness of the
de-icing feature, and this option should be considered
whenever the display sensor cannot read the room
temperature accurately.
For additional details on parameter settings and
navigation options, refer to "Selecting a Parameter" on
page 15 and "Navigation Tree" on page 34.

7 .2 Choosing the Control Operation

The four Mode indicators represent the different modes
of the control: COOL, DEHUMIDIFICATION, HEAT, and
AUX HEAT. Refer to "Using the Control Display Panel" on
page 13 for more detail on mode operation.
EN
8 Choosing the Control Operation
1. Tap the Mode icon to select a mode. Refer to
"Available Modes and Options for Operation" on
page 12.
– Display icons illuminate to indicate the selected
mode.
– The display locks into the last mode selected after
five seconds of inactivity, then displays the room
temperature. The selected mode LED remains lit.
– After 10 seconds of inactivity, the display shows the
room temperature and enters the IDLE state.
– OFF displays on the screen to indicate the OFF state.
– When the display is making a call for heating,
cooling, aux heat, or humidity, the appropriate
Mode indicator blinks for two seconds ON and two
seconds OFF.
2. Tap any icon to wake up the control from the OFF or
IDLE state.
3. Tap and hold the Mode icon for three seconds to
initiate a SLEEP state.
– The display goes dark.
– Normal operation continues.
4. Tap and hold the Mode icon for an additional three
seconds to wake up the control.
Operation
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