the water in fuel alarm went off so I put in new filter. and because I was doing maintenance i put in a new impeller. and filled the oil tank. now its stuck in slow mode i pulled the thermostats and tested there good. So what am I missing? really don't want to lay it up at a shop and have it turn out to be something easy. thanks in advance and i have a manual ordered but if anyone has a clue what to look at?