if you read any of my other posts, I am a new owner of a few 9.5s. I am having a problem with one. I got it running and it was getting hot. I didnt run it for more than a minute and couldnt touch the power head. I am getting a new impeller for it. My question is where is the thermostat? my manual does not show it anywhere. do you think that the impeller is the problem? there was barely a mist coming out the hole.