Need help with Nauticam E-M1 housing problem

Hi all:

I have just recently gotten an E-M1 housing and also the vacuum system. Finally got around to setting it up and am encountering a problem (I think).

I can create a vacuum and get the light to go green, but then it stays green (showing vacuum) even if I release pressure through the valve or open the housing. The housing is also easier to open than I would have thought. It would appear to me that the housing would give me no warning if vacuum was lost prior to or on a dive.

The moisture alarm works fine.

I will contact Reef tomorrow I suppose but thought I would see if anyone had any quick suggestions. Perhaps I am doing something wrong?

Well I guess problem is solved. In case it is of assistance to anyone else, apparently the vacuum system will not work at altitude. Since I live at several thousand feet above sea level, I cannot run the system at home but am assured it will work fine at sea level.