28
Troubleshooting
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).
• It 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. Refer to the Cleaning
and Maintenance Section of this manual
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. Refer to the Cleaning
and Maintenance Section of this manual
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. Refer to the Cleaning
and Maintenance Section of this manual
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
PROBLEM
POSSIBLE CAUSES
SOLUTIONS
To Next Page
Loading...
