Steamer filler cap is sealed

I examined mine. There is literally NO hole in the steam wand for the steam to exit. It's a wonder the thing didn't blow up. Take it back and be glad you still have your face.

You might want to plug it in but not start it. This might unlatch the lock.

keep pressing the steam button up and down
http://www.topinnovations.com/mcculloch/archived/MC1220/pdf/MC1220_Manual.pdf

Dang everyone is looking to sell you stuff and not help. I'm having the same issue too. How did they tell you that you should have done that then? Everything I read says push down and turn.

Press the Water tank cap and Unscrew it to the empty water tank. (Page 7)
Manual is at the link below.
LINK
Hope I was help.

www.youtube.com/watch?v=qrEuacWp5fY

http://www.ehow.com/how_4811845_use-scunci-steamer.html

http://www/onlinetips.org/scunci-steamer/

Water won't come outunit heats light stays blue not green

Use 12 ounces of water.
It's best not to use extremely hard water in the Eureka steamer due to mineral deposits it may leave behind.
If you need cloths for your Eureka 300 or 310/311/313A see my listings on eBay by searching "eureka steamer."
This is a great floor cleaning machine. I have several for use on large areas of linoleum and sealed hardwood in our home.

My Scunci MS 1000 heats and builds up steam, but the steam does not release from the spout when the release button is pushed. Plenty of pressure is built up inside (escapes when cap is opened). What is the problem?

To remedy this, I did the following:
1) Removed screws from: a) Lower area of handle (1 screw), b) Top of steamer, under round rubber flap around fill hole (2 screws), c) Front of steamer where nozzles attach (2 screws)
2) Removed back of handle, top of steamer, front of steamer where nozzles attach 
3) Once all parts are removed, you can see a brass button that is pushed by the trigger
4) Using a needle-nose pliers, grasp and rotate the button several times in both directions (you may hear it cranking against the interior spring). Do this until it turns fairly easily with the pliers.
5) Once this is done, you fill find that the brass button can be very slightly depressed with a bit of force. You may also need/want to unfold a large paper clip to push into the nozzle hole to help unsticking the brass button (not sure if that helped in my case, but it was something I tried along the way). When the brass button moves in and out (again, it won't move much), the steam release mechanism is unstuck!
6) Reassemble all parts (everything snaps back neatly into place).
This worked for my unit!