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Old 06-24-2020, 05:43 PM   #1
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“False” CO signal (corrected from CO2)

For a while we’d been having our CO2 detector go off on some nights, but could find no explanation or source (all gas appliances off, fridge on electricity). Then today I noticed the top step of our exit stairs—where the house batteries are stored—was warm. Inspection showed it was hot, emitting gas, and gurgling. Replacing the batteries solved the mystery detector signals and probably avoided a disaster. Just an FYI.
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Old 06-24-2020, 05:54 PM   #2
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The question is, why were the batteries hot, emitting gas, and gurgling?


You might want to check your converter output.
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Old 06-24-2020, 05:56 PM   #3
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Quote:
Originally Posted by BriaBeck View Post
The question is, why were the batteries hot, emitting gas, and gurgling?


You might want to check your converter output.
If the water level is low the batteries will most definitely overheat.
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Old 06-24-2020, 06:01 PM   #4
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If the water level is low the batteries will most definitely overheat.


Yes, I think you’re right about that. In searching the ap and the old forum I found lots of ideas about these false alarms but no one mentioned it could be from the batteries.
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Old 06-24-2020, 06:19 PM   #5
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If it's like ours and it's an all in one propane / CO2 / low battery warning, it could be that your batteries are going below 50%.
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Old 06-24-2020, 06:49 PM   #6
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Yes, I think you’re right about that. In searching the ap and the old forum I found lots of ideas about these false alarms but no one mentioned it could be from the batteries.
The search function failed you. There are lots of posts about low batteries causing the propane alarm to go off. In our rig, it's one of the first indications we have that the house battery is low.
Your situation is a bit different because you had a battery that was "hot, emitting gas, and gurgling". Glad you found it before you had a disaster.
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Old 06-25-2020, 04:52 PM   #7
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I'm glad you resolved it.

Bear in mind that many spilled fluids will trigger the CO alarm: wine, booze, cleaners, and so on. Anything with VOCs that can evaporate is likely to trigger the alarm.

Ask me how I know.
An open bottle of wine in our fridge tipped on its side. The cork was loose, but did not fall out. Approximately 1/4 cup of wine (+/-) ran out of the fridge onto the floor. As luck would have it, the CO alarm was right next to the fridge.
After a panicked removal of both propane tanks, the alarm continued. We cleaned up the wine, and all was well.

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