PROBLEM
POSSIBLE CAUSE
SOLUTION
• Unit does not work
• Unit suddenly stops during
operation
• Unit runs intermittently
• Unit functions but the room
is not cooled
• Condensed water spills out
when moving the unit
• Power is out
• The plug is not plugged in properly
• The full-tank indicator is ON; tank is
full
• Current leaking or pressing test
button on LCDI plug
• Indoor set temperature has been
reached
• The preset time is up
• The full-tank indicator is ON; tank is
full
• Malfunction
• Surrounding temperature is too
high/low
• Exhaust duct hose is blocked
• Window or door is open in room
• There is a heat source or too many
people in the room
• Air intake grill is clogged
• Filter is too dirty
• Temperature setting is too high
• The tank is nearly full
• Wait for power to return
• Plug in properly
• Remove drain water from
the drain tank
• Press the reset button after
resolving problem
• Reset the temperature level
• Reset the timer
• Remove drain water from
the drain tank
• Contact your dealer
• This is normal
• Check the duct hose
• Close all windows/doors
• Move any heat sources
from room
• Clean air intake grill
• Replace the filter
• Lower temp. setting
• Remove drain plug on rear
bottom and drain out water
11
TROUBLESHOOTING
Occasionally, a problem may occur that is minor, and a service call may not be necessary.
Use this troubleshooting guide for a possible solution. If the unit continues to operate
improperly, call an authorized service depot or
FDOO
Toll Free Number for assistance.
