How to Troubleshoot a Kenmore Window Air Conditioner Fan

Open the front grille of the Kenmore window air conditioner with your hand and pull out the air filter if no air blows from the outlet vents. A dirty filter can simulate an inactive fan component. Run warm water over both sides of the air filter until all buildup and gunk is removed. Allow the filter time to dry before reinsertion. If the air filter is damaged or can’t be cleaned, replace it. The filter catches impurities, such as dust and mold, preventing them from flowing through the unit. It should be cleaned approximately twice a month.

Press the power button to turn off the Kenmore and reset the connection if the unit fails to blow. Allow 10 seconds to pass and press the power button again. If the unit still fails to turn on, the plug’s internal surge protector might have tripped. Unplug the unit from the wall, plug it back in, press the “Reset” button on the plug and allow 3 minutes to pass before turning the unit back on.

Turn off the Kenmore air conditioner and allow the unit to thaw, if ice builds up within the unit. If the outside temperature is warm, then the fan could be the cause. Remove the front panel of the air conditioner unit to access the fan compartment. Inspect the inside of the fan housing for debris, such as a plastic bag or string. Such debris can jam up the fan motor and cause fan failure.

Lower the Kenmore fan thermostat to a cooler setting if the room is warm and the unit or fan fails to turn on. The thermostat setting must be lower than room temperature in order for the unit to activate. If the thermostat is already low, the wiring might be severed or disconnected between the thermostat and the fan component. To test this, lower the thermostat and listen for the fan and the internal compressor. If you hear the internal compressor kick in but not the fan, remove the front panel and inspect the thermostat wiring.