I have a slew of problems that started yesterday and I'm thinking there may be one smoking gun. 1. While connected directly to garden hose I noticed that my fresh water tank was filling up. My temperature would also not exceed 140-145. I disconnected the hose and connected to the holding tank and suddenly my temperature returned to normal. 2. My vacuum port pours lots of water once machine is turned off. 3. I'm noticing that my chemical metering gauge hovers around 2 gpm when I'm not pressing the valve. I'm thinking a valve is stuck open somewhere.. possibly a solenoid. Headed home to check it out, but wondering if anyone has any ideas.