Good Sam Club Open Roads Forum: Carbon Monoxide/Propane Alarm - Propane Leak?
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 > Carbon Monoxide/Propane Alarm - Propane Leak?

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InTheRockies

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Posted: 09/01/20 08:58pm Link  |  Quote  |  Print  |  Notify Moderator

Hi all. My travel trailer has been sitting in my driveway since June and yesterday I heard an alarm going off in the trailer. It was the combo carbon monoxide/propane alarm, which has never gone off before (I bought the trailer new in Jan 2019). I opened the door and left it open for a bit. Alarm kept beeping (three or four beeps in a row, a pause for a few seconds, and then repeating).

No appliances were on. The propane bottles were connected but the valves were turned off and had been for the last three months. I hit the test and mute buttons on the monitor which silenced it temporarily, but then it went off again. As it wouldn't shut off, I disconnected the trailer battery and disconnected the propane tanks. Of course it stopped then.

I let the trailer air out for a while and then closed it back up. I reconnected the trailer battery to see if it was maybe an electrical issue, but it didn't start beeping again. I then reconnected the propane tanks as a test and about 4 hours later, the alarm started beeping again. I've since disconnected the propane bottles. When the alarm stopped beeping the 2nd time after disconnecting the bottles, the green light on it was blinking. I disconnected the trailer battery and reconnected it and the light on the monitor is now solid green.

So, what I'm surmising is that I have two issues - the first is that at least one of the propane bottles is leaking (I'll try the soapy water test tomorrow to see which one). The 2nd issue though is that even if propane is flowing from the bottles, how is it getting into the trailer, unless there is a leak in one of the interior lines or appliances.

Any thoughts on where and how I should check for the interior leak? I live in a very rural area and am not close to a RV service shop. No mobile techs out here either. There is a propane shop about 30 mins from me and I'll call them tomorrow to see if they troubleshoot this kind of thing, but if I can try and pinpoint or at least rule out some locations of the leak, it would likely save me time and money.

A couple of other notes: it's been quite warm here - upper 80s during the day and likely warmer than that in the trailer. I've read that sewer gases from the black tank can sometimes trigger the alarm, but it's not started beeping since I disconnected the propane tanks.

I did recently have an issue with mice in the trailer (within the last couple of weeks). I seem to have gotten rid of them, but could they have damaged something in the propane lines? I also noticed mouse droppings on top of both propane tanks when I took the cover off.

Thanks in advance for any suggestions.

* This post was edited 09/02/20 12:57pm by InTheRockies *


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bukhrn

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Posted: 09/01/20 09:09pm Link  |  Quote  |  Print  |  Notify Moderator

Is it the C02 alarm or the propane alarm that beeping, on my Forester, the C02 alarm is up near the bedroom ceiling, the propane alarm is near the floor by the entry door.


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Sjm9911

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Posted: 09/01/20 09:40pm Link  |  Quote  |  Print  |  Notify Moderator

Yes. The CO alarm is carbon monoxide ( not CO2) that is set off by incomplete combustion. If you are not burning anything, its probably not that. The propane alarm, and that sounds more likely is what you are describing. ( some detect both) Check the conections and the lines. Soapy water. Then check the detecter itself , they go bad after 8 to 10 years and need replacement. Ive also herd the sewer gas can set off the detecters, probably the propane one and not the co one. See whats going off first. Then check back here.


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delwhjr

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Posted: 09/01/20 09:46pm Link  |  Quote  |  Print  |  Notify Moderator

I had one go bad after only 18 months, so failure is a possibility. They also can go off when the 12v supply is low.


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ndrorder

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Posted: 09/01/20 09:46pm Link  |  Quote  |  Print  |  Notify Moderator

Some detectors will alarm when the battery voltage drops below a certain level. Also, as a CO detector dies it will become sensitive to temperature.


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2oldman

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Posted: 09/01/20 09:57pm Link  |  Quote  |  Print  |  Notify Moderator

Co, not co2

coolmom42

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Posted: 09/01/20 10:16pm Link  |  Quote  |  Print  |  Notify Moderator

I would check the battery charge. Low battery can make the detector go off. If the battery is OK, replace the propane detector. The detectors can go bad and start beeping.


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Roger10378

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Posted: 09/02/20 06:17am Link  |  Quote  |  Print  |  Notify Moderator

What are you calling a beep. To me a beep is a short duration sound that may or may not repeat. A beep is usually an indication of a problem with the detector. When the detector sees a problem with whatever it is detecting it is a loud continuous tone that is impossible to ignore.


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ReneeG

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Posted: 09/02/20 07:13am Link  |  Quote  |  Print  |  Notify Moderator

delwhjr wrote:

I had one go bad after only 18 months, so failure is a possibility. They also can go off when the 12v supply is low.


Agree. That was my first thought since CO2 alarm does not detect propane.


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monkey44

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Posted: 09/02/20 08:47am Link  |  Quote  |  Print  |  Notify Moderator

delwhjr wrote:

I had one go bad after only 18 months, so failure is a possibility. They also can go off when the 12v supply is low.


^^^^ this one - check low battery first.


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