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Owner’s Manual 21
ENGLISH
Maintenance and Service
Common Problems and Solutions
Before calling for service, please review the following list of common problems and solutions.
The air conditioner is operating normally when:
• You hear a pinging noise. This is caused by water being picked up by the condenser on rainy days or in
highly humid conditions. This feature is designed to help remove moisture in the air and improve cooling
efficiency.
• You hear the thermostat click. This is caused by the compressor cycle starting and stopping.
• You see water dripping from the rear of the unit. Water may be collected in the base pan in highly humid
conditions or on rainy days. This water overflows and drips from the rear of the unit.
• You hear the fan running while the compressor is silent. This is a normal operational feature.
The air conditioner may be operating abnormally when:
Problem Possible Causes What To Do
■ The air conditioner is
unplugged or not plugged
in completely
■ The fuse is blown/circuit
breaker is triggered
■ Power failure.
■ The current interrupter
device is tripped.
■ Air flow is restricted
■ The THERMOSTAT may
not be set cool enough
■ The air filter is dirty.
■ The air conditioner was
just turned on.
■ Cold air is escaping.
■ Cooling coils are iced up
■ The cooling coils are iced
over.
• Make sure the plug is completely plugged into the
outlet
• Check the fuse/circuit breaker box and replace the
fuse or reset the breaker
• In the event of a power failure, set the power control
to OFF. When the power is restored, wait 3 minutes
to restart the air conditioner to prevent the
compressor from overloading
• Press the RESET button located on the power cord
plug. If the RESET button will not stay engaged,
discontinue use of the air conditioner and contact a
qualified service technician.
• Make sure there are no curtains, blinds, furniture or
other obstacles in front of the air conditioner
• Turn the knob to a higher setting. The highest setting
provides maximum cooling
• Clean the filter at least every 2 weeks. Refer to the
“Maintenance and Service” section of the manual.
• After the air conditioner is turned on, you need to
give the air conditioner some time to cool the room.
• Check for open furnace floor resisters and cold air
returns.
• CLOSE the air conditioner vent
• See Ice appears on the air conditioner below
• Ice may block the air flow and obstruct the air
conditioner from properly cooling the room. Set the
fan at MED or HIGH while setting the thermostat at 1
or 2 until the ice melts.
The air conditioner
does not operate
at all
Air conditioner
does not cool
Ice appears on the
air conditioner.
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