Http://dl.owneriq.net/a/a64a1426-8226-4b14-9621-800688d1ff17.pdf
her is a manual and will cover the usage and settings ..but for flashing green lights ...it indicates a malfunction ...and it can only be something related with the drain ..water tank or the fildter needed to be cleaned or changed..
Check the water tank to be on level .and also see if it has a floater inside, that can be stuck .if it has one ..this is for to sense the presence or absence of the water..(shake it good if you think it is stuck ..
Another operation is to clean the filter ..The filter should be cleaned or changed (if damaged ) once a year ..but in some conditions ..it needs to be cleaned more often ..The cleaning is made under he tap with warm (not hot ) water..
The drain trap or outlet should be checked and cleaned of debris annually. Flush it with water
under pressure to ensure opening is clear.
if all that is done and still blinking ..than there is something physically wrong on the fan area ..and this should be checked by a repair-man