i went out this week to run my 225 vindicator. it started fine, ran good until i opened it up. my buzzer went off with a steady sound. i think its telling me that it is overheating. when i bring it down to an idle and wait a minute, it will go off and i can run it again. it will do the same thing again when i open it up after about a 1 minute of running. any help will be appreciated. water pressure is coming up around 17 lbs.