Originally Posted by vol ff
Thanks for the replies. Still stumped!! Camped this weekend and still bad luck. Pilot light ignites and burns fine. Have a new thermocouple in unit. Main burner ignites only once! Will not stay running long enough to heat water up no matter what temp setting it's set to. My unit is the SW6P that you have to light pilot light with a camp stove lighter and then rotate gas knob to "on". Have NO electronic switches or controls. Temperature setting is a black plastic tab with many holes you adjust on a pin.
Thinking the thermostat/gas valve may be bad?????
The high and low limit switches are actually bellows activated thermostats. You have two. Either one can be bad.
When the tank is cold, BOTH switches must conduct electricity. (easy to check since an ohmmeter will show continuity) .
While I am more familiar with the Suburban models, the procedure below should be similar on yours.
If either one is "open" you will need to try a reset on the high limit one (should have a "button" on it you can press) or replace it if bad.
You are looking at those red terminals between the pressure relief valve and the gas burner in the photo. The "bellows" part of the thermostatic switch is hidden behind the square cover.
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