What do the RYOBI 36V Lawn Mower LED lights mean?

LED	Action
Blade Check Warning LED	The Blade Check LED is a handy reminder to check the condition of the blade. This reminder will pop up every 10 hours of use. Holding down the battery icon on the dashboard for 3 seconds will reset it and the 10 hour timer will begin again.
Catch/Mulch Warning LED	This will flash orange indicating that either the mulch plug or the catcher is not installed or not installed correctly, which prevents the mower from starting. Check how either one has been fitted.
Overload Warning LED	In the situation where the mower has reached its maximum limit, then the overload LED will light up. If this continues to pop up, then consider increasing the cutting height, use two batteries or check if the catcher is full.