Uni-Line North America 1951-536 Millivolt Thermopile Generator

hey guys this is a tea service doctor today what we're looking at is a 750 millivolt DC thermo-pile or power pilot rod alright these are found on those old floor furnaces in the hallway of some older houses where you have a 36 by 48 grill alright and the actual DC millivolts actually goes through the thermostat and back to the gas valve and closes the gas valve in order for the heat to turn on these are also found on some water heaters and also some freestanding ventless gas fireplaces alright so they are out there so I just want to make sure that you're aware of how to diagnose this this particular one was taken out of a ventless gas fireplace that was only a few years old so they're still using those all right this actually is not producing the proper amount of millivolts DC okay so you're you have a fling that's supposed to be engulfing the rod that's the very first thing if you're h