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Maintenance and Service
Common Problems and Solutions
Troubleshooting Tips Save time and money!
Review the chart below first and you may not need to call for service.
Normal Operation
• You may hear a pinging noise caused by water being picked up and thrown against the condenser on rainy
days or when the humidity is high. This design feature helps remove moisture and improve efficiency.
• You may hear the thermostat click when the compressor cycles on and off.
• Water will collect in the base pan during high humidity or on rainy days. The water may overflow and drip from
the outdoor side of the unit.
• The fan may run even when the compressor does not.
Troubleshooting
Problem
Air conditioner
does not start
Air conditioner
does not cool as it
should
Air conditioner
freezing up
22 Room Air Conditioner
Possible Causes
I The air conditioner is
unplugged.
I The fuse is blown/circuit
breaker is tripped.
I Power failure.
I The current interrupter
device is tripped.
I Airflow is restricted.
I TEMP Control set too
higher number.
I The air filter is dirty.
I The room may have been
hot.
I Cold air is escaping.
I Cooling coils have iced up.
I Ice blocks the air flow and
stops the air conditioner
from cooling the room.
What To Do
• Make sure the air conditioner plug is pushed
completely into the outlet.
• Check the house fuse/circuit breaker box and replace
the fuse or reset the breaker.
• If power failure occurs, turn the mode control to OFF.
When power is restored, wait 3 minutes to restart the
air conditioner to prevent tripping of the compressor
overload.
• 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, or furniture
blocking the front of the air conditioner.
• Set the TEMP control to a lower number.
• Clean the filter at least every 2 weeks.
See the operating instructions section.
• When the air conditioner is first turned on,
you need to allow time for the room to cool down.
• Check for open furnace floor registers
and cold air returns.
• Set the air conditioner's vent to the closed position.
• See Air Conditioner Freezing Up below.
• Set the mode control at High Fan or High Cool with
the high temperature.
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