Solenoid switch does not shut off propane
Over the winter I had the yard install a Trident propane detector/shut off switch. There is power to the switch (mounted near the galley) because the display lights are on. HOWEVER, when I push the "off" button on the Trident switch the gas to the stove does NOT stop.
I'm guessing that solenoids work by closing when there is no electricity flowing to them and opening when there is. Is that right? (The reverse would seem inherently dangerous.)
So, if I check the leads at the solenoid (located in the propane locker) and find there is electricity there when the switch is "on" and none when it's "off" (but the propane still flows) then the solenoid is probably bad and needs to be replaced.
Is that right? Any other advice for diagnosing this?
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Nonsuch 30 Ultra #343 1986
West River, MD