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The exhaust is obstructed
Check the exhaust duct. Remove
any obstructions
The unit is set in dehumidifying
mode
Set the unit in cooling mode
The unit is set to low fan speed Set the unit to high fan speed
Windows or doors are open
Close all windows and doors into
the room when the unit is cooling
There are too many people in the
room
You may need additional cooling
or another air conditioner
There is direct sunshine into the
room
Close curtains and blinds. Try to
minimize the amount of direct
sunlight into the room
The room is a kitchen, with many
heat-producing appliances
You may need additional cooling
or another air conditioner
There is a server in the room
You may need additional cooling
or another air conditioner
The room is too large
You may need additional cooling
or another air conditioner
There are many electrical
appliances in the room
You may need additional cooling
or another air conditioner
The unit has worked for a long
time, but the room is not cold
enough
The room is not well insulated
You may need additional cooling
or another air conditioner, or you
may need to add insulation
The unit is not level Make sure the unit is level
The compressor is bad Call for service
The unit is very noisy
The floor underneath the unit is
uneven
Move the unit to a location with a
level, even floor
The rubber drain stoppers are not
installed
Install the rubber drain stoppers
The unit is leaking water onto the
floor
The unit was tilted, or is not level Make use the unit remains level
The unit is unable to work as
efficiently as it needs to
Make sure the exhaust hose is not
over-extended or kinked, that the
filter is clean, and that nothing is
obstructing any of the air inlets
The evaporator coils freeze up
The ambient temperature is too
cold
Use the unit only when the
ambient temperature warms up
The unit shows an error code
beginning with "E"
Various factors Call for service
Other issues Various factors Call for service
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