The condenser coils are dirty.
Carefully vacuum the coils clean.
Unit continues to
operate after water
tray is full or water full
protection occurs
frequently.
Water level switch is open or short
circuited.
Check water level switch connections or replace
water level switch if defective.
Water level switch is stuck in
“empty” position.
Make sure water level switch is operating correctly
and not stuck or being interfered with.
When unit is turned on or off the
outer shell “pops” or “clicks.”
Normal sound. Outer shell is contracting or
expanding and will stop after a few minutes.
When unit is turned on or off
“boiling” or “running water” is heard.
Normal sound. The cause is refrigerant flowing inside
the system and will stop after a few minutes.
Foreign objects inside the unit are
interfering with fans or other moving
parts.
Make sure unit is on a level surface.
Tighten bolts holding compressor to chassis.
Set temperature is too low.
Adjust the set temperature.