Specifications

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Heating and Cooling Guide V1.pdf Page | 13 Version: 1, March 15, 2013
amount of icing. You might also get some condensation dripping out of the return air grille. Keep an eye
out for this, especially with the bedroom unit, as no one likes a wet bed.
Routine Maintenance
Cleaning the Return Air Intake Filter(s)
The air conditioners have a washable filter media located directly behind the return air intake grille(s).
You should be able to see the filter(s) with the grille in place. This should be washed out with warm
soapy water as needed and allowed to air dry before reinstallation. The return air grille is easily removed
by pressing inward on a couple plastic locking tabs. Note that there is no filter used for the furnace air
return.
Cleaning the Outside Coils
Both the Evaporator and Condenser coils are accessible from the roof. The plastic shroud must be
removed from the air conditioner.
Both of these coils and the two sets of fan blades can accumulate dust, spider webs, mud daubers, etc.
that can restrict airflow over time. This reduces the efficiency of your air conditioner and can make it
noisier. These should be inspected periodically regardless of run time, and cleaned if necessary. Light
dust can probably brushed off with a soft bristle brush. For heavier buildup, mild soap and water can be
used. Be very careful not get water into the fan motors, electrical components, or into the RV ductwork.
You should also clean the drain pan and make sure the drain holes are clear of any obstruction. Allow
the air conditioner to dry thoroughly before restoring the power or running the equipment.
Common Problems
Insufficient cooling
• Turn off any unnecessary internal heat sources.
• Run vent vans as required in the bathroom and over the stove to exhaust excess heat and
moisture while showering or cooking.
• Check the A/C filter(s).
• Make sure the thermostat fan speed is set to high.
• Make sure all A/C vents are open and unobstructed.
• Check for frozen coils.
CAUTION: Be very careful to not bend the aluminum fins of the coils. They are soft and can easily
be bent by high pressure air cleaning or by rough hand cleaning.
CAUTION: Before removing the shroud, cycle the thermostat to OFF and turn off the circuit
breaker(s) for the air conditioner(s).