I have a Alkota 2142 hot water pressure washer. The burner will run all the time as long as I have the wand open, will cut off when I quit spraying. My problem is what controls the temperature, it will get so hot it will just steam, afraid someone will get hurt with it. I can't find anything to control temp., it has a vacuum switch the power runs thru and as long as its pumping water the switch is closed causing the burner to ignite. There has to be some way of controlling temp and I can't find it. Would appreciate any help.