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28 29
PROBLEM
POSSIBLE CAUSES
SOLUTIONS
The unit does not start
The unit is unplugged
• Make sure the power plug is inserted
completely into the outlet
The fuse is blown or the circuit
breaker is tripped
• Replace the fuse or reset the circuit
breaker
Power failure
• The unit will automatically restart with
the previous setting when power is
restored
The current interrupter device is
tripped
• Press the RESET button
The unit does not
cool as it should
The room temperature is below
62°F (17°C). Cooling may not occur
until the room temperature rises
above 62°F (17°C)
• This is normal
The temperature sensor behind
the air filter element touches the
cold coil
• Keep the temperature sensor away
from the cold coil. Contact Customer
Service
The temperature control may not
be set correctly
• Set to a lower temperature
The compressor stops when the
operating mode of the unit is
changed
• Set the unit to COOL Mode and wait
3minutes
Poor cooling and ice
forms on the cooling
coil behind the
decorative front
The outdoor temperature is below
64°F (18°C)
• Set the unit to FAN Mode to defrost
the coil
The air filter may be dirty • Clean the filter (See > Page 27)
The thermostat is set too cold
when cooling at night
• To defrost the coil, set the unit to
FAN Mode. Then set to a higher
temperature
Poor cooling but no
ice forms on the
cooling coil behind the
decorative front
The air filter is dirty • Clean the filter (See > Page 27)
The temperature is set too high • Set to a lower temperature
The air directional louvers are
positioned improperly
• Reposition the louvers for better
airflow
The front of the unit is blocked by
drapes, blinds, or furniture
• Clear the blockage in front of the unit
Open doors, windows, or registers
may allow cold air to escape
• Close any doors, windows, or registers
The room may be too warm
• Allow additional time to remove the
“stored heat” from the walls, ceilings,
floors, and furniture
The unit turns on
and off rapidly
The air filter is dirty • Clean the filter (See > Page 27)
The outside temperature is
extremely hot
• Set the FAN speed to high mode to
cool the cooling coils more quickly and
easily
The unit makes
noises during cooling
Air movement sound • This is normal
Window vibration
• Poor installation. Refer to the
installation instructions or check with
the installer
The unit doesn’t work
continuously
The unit is preset with ECO on
for energy saving. It will shut off
the compressor and fan when the
preset temperature is reached
• Press the ECO button to deactivate the
energy saving mode
The room temperature
is higher than the set
temperature on the
unit
The temperature displayed on the
unit is the SET temperature (not
the room temperature)
• Check the room temperature
on the app
The room thermometer is far away
from the unit. The unit is on ECO
Mode and the compressor is off
when the temperature sensor
reaches the set temperature
• Turn off the ECO Mode
• Use the FOLLOW ME function on the
Remote Control (See > Page 26).
Place the Remote Control near the
room thermometer and aim it at the
unit
Troubleshooting Troubleshooting
PROBLEM
POSSIBLE CAUSES
SOLUTIONS
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