During the winter months, window air conditioners are kept in a clean, dry place in the room. If you store your window air conditioner in the basement, make sure it's raised to ensure it doesn't get exposed to water. Always keep the basement air conditioning unit upright to prevent oil and refrigerant migration.
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Caution: Before starting any work on your device, the device must be turned off and empty. Failure to do so could result in severe and potentially fatal electric shock. General guidelines for maintaining these parts are as follows:-
Filters:- Before every winter and once a month during winter, the filters must be removed, cleaned and replaced. If you live in a very dry climate, you may need to do this more often. Most window air conditioners have washable filters that look like sponges.
Power cord:- If your AC stops working and you suspect the AC is not receiving power, there may be a problem with the power cord. The power cord may wear out and fail to provide power to the AC. To check the cables, remove the control panel. Remove the cable clamp, then connect the test lead to the bare wire.
Evaporator and condenser coils:- Clean the evaporator and condenser coils along with cleaning the filter; before the start of winter and once a month during the season. If your environment is very dusty, this may need to be done more often. The coils can be cleaned with a vacuum hose. If the bobbin blades are bent, use a fin comb from your local hardware store to straighten them.