Check your fuse box or circuit panel to see if a fuse has blown or circuit breaker tripped if the air conditioner will not start. Ensure the plug is securely in a live outlet.
Move your curtains, furniture or blinds from the front of the air conditioner to allow for free airflow if the room isn't as cool as you would like. Also, try turning the knob to a higher setting for more cooling power.
Clean off the filter for greater airflow if the air coming out is not as cool. Lift the filter up and out of the front of the grille and then run it under lukewarm water. Shake it off thoroughly when you are finished and replace.
Switch the mode control to "high fan" or "high cool" while the thermostat is at 1 or 2 if the air conditioner is freezing up during use.
- If you've had a power outage, turn the mode control to "off" and wait for three minutes to turn on the air conditioner after the power has come back on. This prevents tripping the compressor overload.