EdgeStar EAC421 User Manual
Page 3

• Press the MODE button to select the COOL MODE, as
indicated by the LED. The full effect of this mode will 
begin to be felt after about 3 minutes. 
• Once all the water in the tank has been used turn the
product OFF, unplug it from the electrical socket, and refill 
the tank. 
• To turn the product OFF press the POWER button again.
If you do not intend to use the product again for some time 
empty the water tank. 
• To empty the water tank, turn the unit off using the
POWER button. Unplug the unit from the power outlet. 
Remove the drain cap from the drain and allow the water 
to drain out. 
 
HUMIDIFICATION CONTROL 
 
 
 
• Open the top cover lid 
• Turn the dial counter-clockwise for maximum 
humidification. 
• Turn the dial clockwise for minimum humidification. 
 
 
LOUVER CONTROL 
• Press the SWING button to start the vertical louvers 
automatically moving from side to side. To stop the louvers 
press the SWING button again. 
• You can change the air direction up or down by manually 
adjusting the horizontal louvers. 
TIMER OPERATION 
• The TIMER can be used to switch the product off after a 
selected number of hours. 
• Turn the unit on. 
• Select the desired operating mode, speed, etc.
• Press the TIMER button once and the product will switch 
off after 1 hour. Press the button again for 2 hours, again for 
3 hours etc. The maximum timer setting is 8 hours. The LED 
display will show the number of hours the timer is currently set 
for. 
• To cancel the Timer setting press the TIMER button again 
until all the timer indicators are dark. 
 
REMOTE OPERATION 
 
z POWER: This button 
turns the unit ON or OFF.
z MODE: This button turns
the COOL MODE on or 
off. 
z SPEED: This button
toggles through the fan 
speeds 
z TIMER: This button
controls the TIMER
z SWING: This button
adjusts the louver swing.
 
a) To replace the batteries, remove the cover of the battery 
compartment. Install two AAA 1.5V Batteries, and then 
replace the cover. 
b) The effective operating range of the remote control is
about 13 feet in front of the unit and about 10 feet on the 
side. 
c) Take out the batteries if the remote will not be used for a
long period.
d) Replace the batteries as soon as the remote control does
not work normally.
e) Do not allow children to use the remote as a toy.
