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MAINTENANCE
A.
Air Filter
1. Periodically (a minimum of every 2 weeks of op-
eration) remove the return air filter located be-
hind the return air vent grille and wash it with
soap and warm water, let dry and then reinstall.
N EVER run unit without return air filter
in place. This will plug the unit evapora-
tor coil with dirt and may substantially
degrade the performance of the unit over
time.
GENERAL INFORMATION
A.
Frost Formation On Cooling Coil
1. Frost on a small portion of the coil is not un-
usual. Under certain conditions, ice may form
on the evaporator coil. This is indicated by very
cold output at very low air speed and the icing
can be seen through the air inlet hole with the
filter removed. If this should occur, inspect the
filter and clean if dirty. Make sure air vents are
open and not obstructed. Units have a greater
tendency to frost when the outside temperature
is relatively low. This may be prevented by ad-
justing the thermostat control knob to a warmer
setting (counter clockwise). Should frosting con-
tinue, operate on any FAN ONLY setting until
the cooling coil is free of frost; then resume nor-
mal operation. If frost condition persist, contact
your local service center for assistance.
B.
Heat Gain
The ability of this air conditioner to maintain the desired
inside temperature depends on the heat gain of the RV.
Some preventative measures taken by the occupants of the
RV can reduce the heat gain and improve the performance
of the air conditioner. During extremely high outdoor tem-
peratures, the heat gain of the vehicle may be reduced by:
1. Parking the RV in a shaded area
2. Using window shades (blinds and/or curtains)
3. Keeping windows and doors shut or minimizing
usage
4. Avoiding the use of heat producing appliances
B.
ADB Housing
1. Clean ADB housing and control panel with a soft
cloth dampened with a mild detergent. Never
use furniture polish or scouring powders.
C.
Fan Motor
1. The blower motor is factory lubricated and re-
quires no service.
Operation on High Fan/Cooling mode will give optimum
or maximum efficiency in high humidity or high outside
temperatures.
Starting the air conditioner early in the morning and giving
it a "head start" on the expected high outdoor ambient will
greatly improve its ability to maintain the desired indoor
temperature.
For a more permanent solution to high heat gain, acces-
sories like Dometic outdoor patio and window awnings will
reduce heat gain by removing the direct sun. They also add
a nice area to enjoy company during the cool of the evening.
C.
Condensation
The manufacturer of this unit will not be responsible for
damage caused by condensation forming on ceilings,
windows, or other surfaces. Air contains water vapor which
condenses when temperature of a surface is below Dew
point. During normal operation this unit is designed to
remove a certain amount of moisture from the air, depend-
ing on the size of the space being conditioned. Keeping
doors and windows closed when this air conditioner is in
operation will greatly reduce the chance of condensation
forming on interior surfaces.
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