Goblin Steamatic Pro 4.0?

I need help sorting a problem with the Goblin Steamatic Pro 4.0 it was fine when my son used it yesterday but when i came to to use it today it worked fine and built pressure up until the green light came on to say it was ready for use and it then switches the yellow power light off and doesn't steam, the yellow steam light comes on as well as the green light but the yellow power light goes off, if you turn it off for a few minutes and turn the yellow power light back on it lights up until it illuminates the green steam light and then there seems to be a click from inside the cylinder and the yellow power light goes off again, I really need a little help on what it could be, also could someone also give me wiring details for the power and steam on off switches and the green and red lights so I can double check the wiring and make sure the connectors are in the correct order, I would really appreciate help with this please, thank you,

Mike
March 2013