How do I replace the filter unit on my AM11?

First, unplug the machine and wait 1 to 2 hours if it has been in use to allow it to cool completely. Then follow the replacement steps shown in the manual, which involve removing the old filter unit and installing a new one. After reassembling, press and hold the 'Standby ON/OFF' button for 6 seconds on the remote control to reset the filter indicator. (Page 7)