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The air conditioner does not
run
Is the air conditioner plugged in?
Is there a power failure?
Is the room temperature below
the set temperature?
The machine seems to do
little
Is there direct sunlight?
(Close curtain & blinds.)
Are too many windows or doors
open?
Are there too many people in the
room?
Is there equipment in the room
producing lots of heat?
The machine seems to do
nothing.
Is the filter dirty / contaminated?
Is the air intake or output
obstructed?
Is the room temperature below
your selected temperature?
Too noisy
Is the machine positioned
unevenly so as to create
vibration?
Is the floor underneath the
machine uneven?
The compressor doesn’t run.
It is possible the overheat
protection of the compressor is
on. Just wait for the temperature
to drop.