reposting this for a friend who originally posted on alt.lasers

hello
i have a hgm model 003 spectrum when i start the laser after about 2
min. i get a E-001 code in the watts read out. would this be for water?
the system has been stored for a long time. does the water need to be
distilled? how do you fill it? any help would be great.
thanks alot jeff