Honeywell TrueSTEAM HM506 Installation Manual page 27

The cleaning flush cycle is initiated when the Draining
light begins blinking. The cycle will take about
45 minutes to complete. It will take longer if using
RO filters.
M29628
Cry?e/ 0
serVic_ 0
Dr_ieioO 0
When the Empty light is on, the tank is empty. The
tank may now be removed for cleaning or
other service.
TrueSTEAM Humidification System 69-2285EF--01 25