15
Issue
Possible Cause
Solution
My air conditioner is not cooling
at all.
The unit is not operating in
cooling mode.
Set the unit to be in cooling mode,
and lower the set temperature.
The compressor is not on. The compressor may take up to 3
minutes to turn on, or longer if it is
too warm.
The ambient temperature
is too high.
Allow the unit to begin cooling the
area before an ambient
temperature of 90°F is reached.
The filter may be dusty or
blocked.
Clean the filters.
The exhaust port is
blocked.
Remove any obstructions in the
exhaust hose and port.
My air conditioner blows cold
air, but does not lower the room
temperature.
The unit has not been
vented.
The unit must be vented to the
outside using the window kit.
The area of the room is
too large.
Minimize the size of the area to be
cooled, i.e. adding a drop ceiling.
Use more than one unit to cool
the area, or use a larger unit.
There are open windows
and doors.
Close any open doors or
windows.
There are too many heat
sources.
Remove or shut off additional heat
sources such as electronic
equipment, servers, etc.
The room / garage may be
inadequately insulated.
Properly insulate the room to be
cooled, i.e. using fiberglass.
The ambient temperature
is too high.
The unit may not work if the room
temperature is above 90°F.
Direct sunlight is heating
the room.
Close the curtains or pull down
the blinds to minimize the amount
of direct sunlight entering the
room.
The filter may be dusty or
blocked.
Clean the filter and replace it if
needed.
The condenser coils are
dirty.
Carefully vacuum the coils clean.
The air intake or exhaust
ports are obstructed.
Remove anything blocking the
ports.
Tip: Run the unit before it is needed. For example, run the unit in the morning before the area
gets hot, and continue to run the unit all day long in order to maintain a low temperature.
