Quote:
Originally Posted by Eastham
If it was the selector would the stove work?and not the hot water heater.
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Yes, that's a good possibility. The water heater requires about 15000 BTU of propane to operate, the stove burners are around 3000 to 5000 BTU, so there could be enough propane flowing through a "partially shut off valve" on the tank or regulator and allow the stove to work just fine, but not be enough flow to keep the water heater burner lit. You could easily have enough to light the water heater but not enough to keep it lit.
If you ran out of propane and it's not the safety flow valve that's causing the shutdown, another possibility is that the "last little bit of propane" in the old tank had enough "trash and tank residue" in it to carbon up the flame sensor. In the bottom of the burner tube, you'll find the thermocouple/flame sensor. You might need to use a stiff tooth brush to clean any carbon that accumulated on it. A carbon film will insulate the thermocouple and cause the flame sensor to sense that the flame is out and shut down the flow valve.
If the water heater was working OK and the only thing changed is the propane tank, then chances are that it's not a component failure but rather just a condition caused by the tank change.