21
Troubleshooting continued
Issue Possible
Cause
Solution
My air conditioner is
not cooling at all
Unit is not operating in
cooling mode
Set the unit to be in
cooling mode, and
lower the set
temperature (pg. 11)
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
Lower the room
temperature to be
below 90°F degrees
The filter may be dusty
or blocked
Clean the filters.
(pg. 19)
Blocked exhaust port
Remove any
obstructions in the
exhaust hose and port
My air conditioner
blows cold air, but
does not lower the
room temperature
The unit is not vented
The unit must be
vented. (pg. 4)
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
Open windows and
doors
Close any open doors
and windows
Too many heat
sources
Remove or shut off
additional heat
sources such as radio
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 curtains or pull
down blinds, and
minimize the direct
sunlight into the room
The filter may be dusty
or blocked
Clean the filter and
replace it if needed
Dirty condenser coils
Carefully vacuum the
coils clean
Obstructed air intake
or exhaust ports
Remove anything
blocking the ports
NOTE: If the ambient
temperature is above 90°F
the unit may not blow cold
air.
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.