MY 2004 MILLIVOLT NON DIGITAL GAS HEATER WILL HOT TURN OFF WHEN THE PUMP IS TURNED OFF. I REPLACED THE PRESSURE SWITCH AND MY 3 LIMIT SWITCHES ARE GOOD. IT WILL CYCLE ON AND OFF WITH THE ON/OFF SWITCH AND WILL CYCLE ON AND OFF WITH THE THERMOSTSAT, BUT WILL NOT CYCLE OFF WHEN THE PUMP IS TURNED OFF.