Pentair Mastertemp 400 Wont Turn On. To Turn Off Gas to Appliance. LP Propane gas or N Natural gas MT 300 HD MT MASTERTEMP MODEL SIZE MJ INPUT Mega Joule MJ HR H.
200 300 or 400. Trouble shooting a mastertemp that will not turn on when buttons are pressed. This is not a DIY job.
Temperature Setting Maximum Temperature Set Point.
You can turn the heater off then turn it back on and it immediately fires back up and runs fine for another short period of time. Air Flow Switch AFS Water Pressure Switch Height Limit Devices. I replaced the high limit switch based on another blog I found and that didnt do it. This adjustment screw should not be tightened or loosened completely bottomed out.