I was extracting a rug and only using the blower and it was under load. Pump wasn't engaged. At one point I went to the machine to check the Hg and noticed that the thermostat was reading over 235 degrees so I engaged the pump to release the heat then switched pump back off. I was a little concerned and confused but I went back to work. When I was done I went to machine to shut it off I saw that the thermostat was at 0. I engaged pump and normally after about 20 seconds or so the machine gets up to 170 degrees. Thermostat wasn't moving. It only went up to 170 when I engaged the salsa. Shut down machine and van to let it reset and cool down. I tried again and the thermostat wasn't moving with pump engaged. Water was coming hot but I could let it run on my hand like hot water under a faucet. Machine is 1 year old. Thanks for any help.