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post #17 of Old 06-30-2013
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Re: Solenoid switch does not shut off propane

I am no expert on solenoids for propane but I do know that they are supposed to close via a spring when they fail or when there is no energy to they. I wonder if it were put in backwards (in the reverse of the flow of gas) could this cause your problem. If backwards the electrical magnetic field would open the valve but when no electrified the gas pressure would overcome the spring that would normally close the valve. I think I am correct that they can not be wired backward, i.e. they have two black wires not a negative and a positive. All they need is a current to develop magnetic field. Again this is just my wild guess but I would be very interested to here from you what you fine. The should be an arrow indicating the proper flow direction thru the valve.
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