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Old 06-08-2018, 06:45 AM   #17
DavidM
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City: Litchfield, Ct
Join Date: Aug 2012
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I doubt if it is a propane detector if the sound is coming from down low. Propane detectors have a control panel, alarm and on off switch that are located either near the main DC panel or near the stove but at eye level within easy reach. The actual detector is located on or near the cabin sole usually below the propane stove. So if the sound is coming from below then it is almost certainly not a propane detector.

It only goes off if you disconnect the battery and not the main DC breaker, right. I would look at the battery or the battery switch and you will find a heavy cable feeding the starter, another 6 gauge or so wire feeding the main DC breaker and 2-3 smaller 14-12 gauge wires feeding things powered directly from the battery like the bilge pumps and critical alarms like CO and propane.

When the alarm sounds, disconnect each of these smaller wires one by one until it goes off. Then follow the wire and see where it goes.

David
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