14
OPERATION INSTRUCTIONS
Normal Sounds
Sound of Rushing Air
In front of the unit, you may 
hear the sound of rushing 
air being moved by the fan.
High Pitched Chatter
High effi ciency compressors may have a 
high pitched sound during cooling cycle.
Trickling Sound
Droplets of water 
hitting condenser 
during normal 
operation may cause 
a trickling sound.
Gurgle/Hiss
Gurgling or hissing noises may be heard 
due to refrigerant fl owing through 
evaporator during normal operation.
Vibration
Unit may vibrate and make 
noise because of poor wall 
or window construction or 
incorrect installation.
All the illustrations in this manual are for explanation purpose only. The actual installation may vary.
NOTE
Gurgle/Hiss
Gurgling or hissing noises may be heard 
due to refrigerant fl owing through 
evaporator during normal operation.
Sound of Rushing Air
In front of the unit, you may 
hear the sound of rushing 
air being moved by the fan.
High Pitched Chatter
High effi ciency compressors may have a 
high pitched sound during cooling cycle.
Vibration
Unit may vibrate and 
make noise because of 
poor wall or window 
construction or 
incorrect installation.
Trickling Sound
Droplets of water 
hitting condenser 
during normal 
operation may cause 
a trickling sound.
MAW05/06 Models
MAW10/12 Models