LP gas detector - Fiberglass RV


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Old 10-26-2012, 12:45 PM   #1
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LP gas detector

Bought a 2009 Casita Liberty in July. Have been camping 3 times. This last time, the LPGD went off every single night anywhere from 11:30 pm to 2:30 am. Never smelled gas. Have vaccumed it and blown air through it. Released butane from a lighter right next to it. It did not go off. Does this mean the detector is bad?

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Old 10-26-2012, 12:49 PM   #2
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Originally Posted by sroberson View Post
Bought a 2009 Casita Liberty in July. Have been camping 3 times. This last time, the LPGD went off every single night anywhere from 11:30 pm to 2:30 am. Never smelled gas. Have vaccumed it and blown air through it. Released butane from a lighter right next to it. It did not go off. Does this mean the detector is bad?

SRoberson
Where you using any propane appliances at the time it happened? Such a the fridge on propane or a water heater? If not it may be defective or you may have a little leak in the system that needs to be checked out by an RV shop.
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Old 10-26-2012, 01:04 PM   #3
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Is it a combined gas/CO detector, or just a detector for unburned propane?

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Old 10-26-2012, 01:47 PM   #4
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Gas detector only.
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Old 10-26-2012, 02:02 PM   #5
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You didn't mention brand or model, disposable battery or continuously powered by the house battery.
My first thought is generally low battery to any device using disposable batteries. Could also be a house battery if connected continuously. I would start there.
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Old 10-26-2012, 02:23 PM   #6
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Originally Posted by sroberson View Post
Gas detector only.


From what I see online, it looks to me like it's most likely the sensor, which apparently can "get dirty" and will give a false signal if so.

I'm only extrapolating that info from the fact that more expensive LP detectors advertise themselves as having "self-cleaning sensors"...there are also many discussions online about this phenomenon.

Here's a link to an interesting one where the O.P. was advised to put the unit outside for a while so it could "self-clean"....and it worked! Propane Detector Chirping - iRV2 Forums

It's interesting to me that this seems to happen only at night in your case. I wonder if the sensor is loading up with condensation from the (probably closed up) interior or something.

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Old 10-26-2012, 02:54 PM   #7
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Turn the tank off at the tank and see if it still happens.
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Old 10-26-2012, 03:32 PM   #8
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Quote:
Originally Posted by Francesca Knowles

From what I see online, it looks to me like it's most likely the sensor, which apparently can "get dirty" and will give a false signal if so.

I'm only extrapolating that info from the fact that more expensive LP detectors advertise themselves as having "self-cleaning sensors"...there are also many discussions online about this phenomenon.

Here's a link to an interesting one where the O.P. was advised to put the unit outside for a while so it could "self-clean"....and it worked! Propane Detector Chirping - iRV2 Forums

It's interesting to me that this seems to happen only at night in your case. I wonder if the sensor is loading up with condensation from the (probably closed up) interior or something.

Francesca
Runs off 12V battery. Green light is on. Battery seems to be fine. Have changed the fuse. Made no difference. Not sure what brand it is. Not near the camper right now. Thanks for the info.
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Old 10-26-2012, 03:43 PM   #9
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Turn the tank off at the tank and see if it still happens.
I did turn the gas off at the tanks and the detector still went off.
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Old 10-26-2012, 03:44 PM   #10
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Methane?
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Old 10-26-2012, 04:05 PM   #11
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Quote:
Originally Posted by sroberson View Post
Bought a 2009 Casita Liberty in July. Have been camping 3 times. This last time, the LPGD went off every single night anywhere from 11:30 pm to 2:30 am. Never smelled gas. Have vaccumed it and blown air through it. Released butane from a lighter right next to it. It did not go off. Does this mean the detector is bad?

SRoberson
Hmmm...guess I blew by the above highlighted part of the original post.

According to the following page, butane failing to set the alarm off IS a sign that the sensor is shot and should be replaced...at least for the page's brand.

Here quoting from Frequently Asked Questions :

"Q. I have tested my GS/5 & GS/6 by injecting butane into the sensor and it doesn't trigger an alarm. What does this mean?
A. This is extremely rare, but means that your sensor has failed without creating a short circuit (which would result in an alarm). You need to replace the sensor. Contact your dealer or contact us directly. Read more in our Sensor section."



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Old 10-26-2012, 05:02 PM   #12
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I did turn the gas off at the tanks and the detector still went off.

If the tank is turned off at the tank, you bled off the gas in the lines (no pressurized gas in the lines) and you are not using any spray cans and/or passing your own gas in the night then your detector is suspect as being shot.
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Old 10-26-2012, 05:31 PM   #13
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A month ago I had a something similar happen to me. I keep the trailer in our garage and noticed the CO/Propane alarm going. In the manual it says to try blowing air over it to clean the surface, this had no effect. I opened up the garage door and trailer. There was also a fan going in the trailer and kept on for an hour, with fuse out on alarm. The alarm went on again after putting the fuse back in, so I got on the web and found that these alarms do go bad. I ordered a new one ,put it in before the last trip and it works great.
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Old 10-26-2012, 05:46 PM   #14
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I found the solution was cut back a little on the PORK & BEANS !
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