We may have found other answers which could help you.
Click here for Vaporetto Polti Steam CleanerMy Polti Vaporetto evolution heats up but does not let any steam out?
Polti Vaporetto steam cleaner- can't stop flow of steam from machine?
Polti 2000 steamer tripping fuses?
Polti Vaporetto solenoid repair?
My Polti Vaporetto has stopped working?
My steam cleaner keeps tripping?