"Check Filter" light is on.

<span style="font-weight: bold;">Cabin Air Conditioner:</span><br /> <ol> <li>Press and hold down the Off button for 4 seconds.</li></ol><span style="font-weight: bold;">Carrier Air Conditioner:</span><br /> <ol> <li>Press the Reset Filter button to reset the timer that calculates the next air filter change after you have inspected / cleaned the indoor return air filter.</li></ol><span style="font-weight: bold;">Daikan Air Conditioner:</span><br /> <ol> <li>Press the Filter Clean Reset button to reset the CLEAN FILTER INDICATOR after you have inspected / cleaned the indoor return air filter.</li></ol><span style="font-weight: bold;">Frigidaire Air Conditioner:</span><br /> <ol> <li>To reset after cleaning the filter, press the "Filter Reset" button and the light will go off.</li></ol><span style="font-weight: bold;">GE Air Conditioner:</span><br /> <ol> <li>Turn the air conditioner OFF and unplug it.</li> <li>The air conditioner must be unplugged for the automatic filter clean timer to reset. Clean the filter.</li> <li>After cleaning, replace the filter and plug the air conditioner back in.</li></ol><span style="font-weight: bold;">Honeywell Air Conditioner:</span> <ol> <li>Press and hold the i button until the timer is displayed, followed by pressing the Up Arrow button (next to the Wake button)</li> <li>Press the Run Program button.</li></ol><span style="font-weight: bold;">Kenmore Air Conditioner:</span><br /> <ol> <li>To reset the filter indicator, press and hold the filter reset button for 3 seconds.</li></ol><span style="font-weight: bold;">Lexus Air Conditioner:</span><br /> <ol> <li>Without having foot on the brake, press the Start button twice to get to the IG-ON position.</li> <li>Then press and hold the "hard" OFF button next to the "hard" Auto button. Hold the OFF button for approx 5 seconds and you hear several beeps.</li></ol>or<br /> <ol> <li>Turn the engine switch to IG-ON mode.</li> <li>Push and hold the A/C OFF button for more than 4 seconds.</li></ol><span style="font-weight: bold;">Lexus 2008 Air Conditioner:</span> <ol> <li>Push the "INFO" button & touch "Maintenance".</li> <li>Touch the desired button Delete All: To cancel all conditions which have been input or Reset All: To reset the item which has satisfied a condition. If "ON" is selected, the system gives maintenance information with the "Information" screen when the system is turned on. If "OFF" is selected, the "Information" screen is disabled.</li> <li>Input the Notice of Date: The next maintenance date must be input.</li> <li>Now input the Notice of Distance: The driving distance until the next maintenance check.</li> <li>Delete: To cancel the date and distance conditions.</li> <li>Reset: To reset the date and distance conditions.</li> <li>Touch "OK" The screen returns to the "Maintenance screen.</li></ol><span style="font-weight: bold;">Lincoln LS 2001 Air Conditioner:</span><br /> <ol> <li>Press and hold the setup button above the radio until it says system check. NOTE: All the doors must be closed.</li> <li>Watch the system check when it goes to A/C filter hit the reset button.</li> <li>Hold down the reset button to confirm.</li></ol><span style="font-weight: bold;">Lincoln LS 2003 Air Conditioner:</span><br /> <ol> <li>Press the STATUS control to access the System Check function, the message center will display A/C FILTER XX% RESET FOR NEW.</li> <li>Press and hold the RESET control to set to 100%.</li></ol><span style="font-weight: bold;">Lincoln LS 2005 Air Conditioner:</span><br /> <ol> <li>Insert the key and turn the ignition to "Run" or "On." It is not necessary to start the engine.</li> <li>Press the "Status" button above the radio until the system display changes to "AC Filter."</li> <li>Press and hold "Reset" above the radio. The system will beep and the "AC Filter" display resets to "100%."</li></ol><span style="font-weight: bold;">Maytag Air Conditioner:</span><br /> <ol> <li>Press the "Fan" button 2 times, then press the "Mode" button 1 time and it will reset.</li></ol><span style="font-weight: bold;">Whirlpool Air Conditioner:</span><br /> <ol> <li>Push in the filter reset on the remote using a straightened out paper clip or similar.</li></ol>or<br /> <ol> <li>On the control panel, press and hold the Mode and the Up Temp Arrow buttons for 6 seconds.</li></ol>or<br /> <ol> <li>After having cleaned the filter just press the reset button located on the indoor unit behind the front panel to interrupt the flashing of the filter monitor indicator.</li></ol>