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post #10 of Old 06-30-2013
weinie
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Re: Solenoid switch does not shut off propane

I don't know if this is the cause of the OP's problem, but it is an issue that I had when I installed a propane system in my boat.

When the solenoid closes, it produces an inductive current in the wiring. In other words, the act of closing the solenoid produces a current in the wire in the opposite direction as the original current which opens the valve.
On my boat, this had the effect of blowing out my LED indicator light.
I had to install diodes in the wiring to effectively prevent the current from flowing backwards!
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