How do I use the MANUAL AUTO button if I lose my remote controller?
Press the MANUAL AUTO button for more than 3 seconds while the unit is in operation to stop it, or press it for more than 3 seconds and less than 10 seconds while stopped to start Auto mode. After cleaning, press it for less than 3 seconds to reset the filter indicator. This button is intended for use when the remote controller is lost or malfunctioning. (Page 2)
From the official Fujitsu Fujitsu Air Conditioner Remote Buttons And Functions Guide manual, page 2
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